WO2026034603A1 - Light-transmitting absorption filter, organic electroluminescence display element, and organic electroluminescence display device - Google Patents

Abstract

Provided are a light-transmitting absorption filter, an organic electroluminescence display element, and an organic electroluminescence display device. The light-transmitting absorption filter comprises a first light-transmitting absorption site and a second light-transmitting absorption site, wherein the transmittances T(460), T(530), and T(620) of the first light-transmitting absorption site at wavelengths of 460 nm, 530 nm, and 620 nm respectively satisfy the following relationships, and wherein a relationship is satisfied in which the sign of at least one value out of a^* and b^* in an L^*a^*b^* color space of transmitted light is opposite between the first light-transmitting absorption site and the second light-transmitting absorption site.　T(460) ≥ 30% T(530) ≥ 40% T(620) ≥ 30%

Description

Light-transmitting and absorbing filter, organic electroluminescent display element, and organic electroluminescent display device

The present invention relates to a light-transmitting/absorbing filter, an organic electroluminescent display element, and an organic electroluminescent display device.

In recent years, organic electroluminescence (OLED) display devices, inorganic electroluminescence display devices (inorganic EL display devices), and liquid crystal display devices have been used as image display devices.

Liquid crystal display devices are becoming more and more popular as space-saving, low-power image display devices. Because the liquid crystal panel that displays images is a non-emissive element, a liquid crystal display device is equipped with a backlight unit that is placed behind the liquid crystal panel and supplies light to the liquid crystal panel.
OLED display devices (also referred to as "organic EL display devices") are devices that display images by utilizing the spontaneous emission of OLED elements. As a result, compared to various display devices such as liquid crystal display devices and plasma display devices, they have advantages such as a high contrast ratio, high color reproducibility, a wide viewing angle, fast response, and the possibility of being thin and lightweight. In addition to these advantages, OLED display devices are being actively researched and developed as next-generation display devices due to their flexibility.
Inorganic EL display devices are devices that display images by utilizing the spontaneous emission of inorganic EL elements instead of the OLED elements used in OLED display devices as fluorescent materials. Recent research has raised hopes that inorganic EL display devices will be superior to OLED display devices in terms of larger screens and longer life.

In the development of image display devices, a technique of incorporating a light absorbing filter as a component is known.
For example, in a liquid crystal display device, when a white light-emitting diode (LED) is used as a light source for a backlight unit, an attempt has been made to provide a light-absorbing filter to block light of unnecessary wavelengths emitted from the white LED. Also, in an OLED display device, an attempt has been made to provide a light-absorbing filter from the viewpoint of suppressing reflection of external light, and Patent Document 1 discloses a method of preventing reflection of external light without reducing the transmittance of display light by combining a plurality of dyes with different maximum absorption wavelengths.

As another form of light-absorbing filter incorporated into an image display device, research is also being conducted on optical filters that have both light-absorbing portions with a light-absorbing effect and portions where light absorption has been eliminated (hereinafter simply referred to as "light-absorbency-eliminated portions") by eliminating the light-absorbency in desired portions. Generally, non-light-emitting portions (portions from which display light is not emitted) of OLED display devices have metal wiring or the like arranged therein, and therefore often have a higher reflectance than light-emitting portions (portions from which display light is emitted). When an optical filter is incorporated into an image display device and used, by arranging the light-absorbing portions on the non-light-emitting portions of the OLED display device and the light-absorbency-eliminated portions on the light-emitting portions of the OLED display device, it is possible to minimize the decrease in transmittance of display light and improve the anti-reflection effect.
For example, Patent Document 2 describes a light-absorbing filter containing a resin, a compound having an acid group, a compound that forms a hydrogen bond with the compound having an acid group and generates radicals upon irradiation with ultraviolet light, and a dye having a main absorption wavelength band in the range of 400 to 700 nm. The light-absorbing filter described in Patent Document 2 is said to exhibit a high decolorization rate upon ultraviolet irradiation, and to exhibit high decolorization performance with almost no absorption (hereinafter also referred to as "secondary absorption") resulting from a new colored structure associated with decomposition of the dye upon ultraviolet irradiation. Patent Document 3 also describes a light-absorbing filter containing a resin, a dye having a main absorption wavelength band in the range of 400 to 700 nm, and a compound that generates radicals upon ultraviolet irradiation, wherein the dye includes at least one of an azo dye represented by any one of general formulas (i) to (iv) and an indoaniline dye represented by general formula (v). The light-absorbing filter described in Patent Document 3 is said to exhibit an excellent decolorization rate even when irradiated with ultraviolet light at room temperature, and to exhibit almost no secondary absorption upon ultraviolet irradiation, thereby exhibiting high decolorization performance.
Furthermore, Patent Document 4 discloses a configuration in which, in a multicolor light-emitting organic EL display device, magenta color filters (first dimming layers) are arranged on blue light-emitting sections, red light-emitting sections, and non-light-emitting sections, and the magenta color filters are not arranged on green light-emitting sections, and further, first dimming layers that have selective absorption properties for light of wavelengths intermediate between red light and green light (specifically, the wavelength at which the transmittance is at a minimum exists in the range of 580 to 600 nm) are arranged on the blue light-emitting sections, red light-emitting sections, green light-emitting sections, and non-light-emitting sections.

International Publication No. 2021/066082 International Publication No. 2023/068235 International Publication No. 2023/234353 International Publication No. 2010/150535

However, the light-absorbing filter described in Patent Document 1 has a problem in that the transmittance of display light is impaired when the absorbance is increased to the point where reflection of external light can be sufficiently suppressed. Also, the methods described in Patent Documents 2 and 3 do not sufficiently suppress reflection of external light caused by light-emitting sections in display devices, and improvements have been desired.
Furthermore, although OLED display devices having a microcavity structure can improve the color purity of display light, they are known to have high viewing angle dependency, resulting in significant color changes depending on the viewing angle.The multicolor light-emitting organic EL display device described in Patent Document 4 shows a certain improvement effect in reducing color changes due to viewing angle, but has a problem in that it does not sufficiently suppress the reflection of blue external light, resulting in a change in the color of the reflected light compared to a display that does not contain a dye (the color of the reflected light deviates from neutral).

In other words, the present invention aims to provide a light-transmitting-absorbing filter that, when incorporated into a display device, ensures the desired transmittance of display light; when incorporated into a display device, it suppresses external light reflection and also suppresses changes in the color of reflected light compared to when the filter does not contain a dye (hereinafter referred to as "the color of reflected light is adjusted to be neutral"), and suppresses changes in the color of display light compared to when the filter does not contain a dye (hereinafter referred to as "the color of display light is adjusted to be neutral"); an organic electroluminescent display element including this light-transmitting-absorbing filter; and an organic electroluminescent display device equipped with this light-transmitting-absorbing filter or organic electroluminescent display element.

In light of the above-mentioned problems, the inventors conducted extensive research and discovered that by configuring a light-transmitting/absorbing filter that exhibits the desired high light transmittance, having a first light-transmitting/absorbing section whose transmittance at specific wavelengths is equal to or greater than a specific value, and a second light-transmitting/absorbing section whose chromaticity satisfies a specific relationship with the first light-transmitting/absorbing section, it is possible to suppress external light reflection when incorporated into a display device, and further adjust the color of both the reflected light and the displayed light to be neutral. The present invention was completed after further research based on this finding.

That is, the above problems were solved by the following means.
<1>
having a first light-transmitting-absorbing portion and a second light-transmitting-absorbing portion;
The transmittance T(460) at a wavelength of 460 nm, the transmittance T(530) at a wavelength of 530 nm, and the transmittance T(620) at a wavelength of 620 nm of the first light transmitting/absorbing site each satisfy the following relationships:
A light-transmitting-absorbing filter in which the first light-transmitting-absorbing portion and the second light-transmitting-absorbing portion satisfy a relationship in which the sign of at least one of the values a ^* and b ^* in the L ^* a ^* b ^* color space of the transmitted light is opposite.
T(460)≧30%
T(530)≧40%
T(620)≧30%
<2>
The light transmission-absorption filter according to <1>, wherein a ^* and b ^* of the transmitted light of the first light transmission-absorption site satisfy the following relationship:
−20.0≦a ^* ≦+20.0
−20.0≦b ^* ≦+20.0
<3>
The light transmission/absorption filter according to <1> or <2>, comprising two or more layers with different light absorption/transmission properties.
＜4＞
<1><2> An organic electroluminescence display element comprising the light-transmitting/absorbing filter according to any one of <1> to <2>.
<5>
the light transmission-absorption filter comprises a laminate II including a wavelength-selective absorption layer and a laminate III obtained by mask-exposing a laminate including a light-absorbing and disappearing layer to ultraviolet light irradiation,
the organic electroluminescence display element is formed by arranging the laminate II, the laminate III, and a light-emitting element layer in this order;
The organic electroluminescent display element according to <4>, wherein a distance d between the laminate III and the light-emitting element layer, an average area S of each light-emitting element constituting the light-emitting element layer, and an average area Sf of the first light-transmitting/absorbing portion located directly above each light-emitting element satisfy the relationship of the following formulas (1) and (2):
Formula (1) 0.6≦d/√S≦7.5
Formula (2) 0.7≦Sf/S≦1.5
＜6＞
the light transmission-absorption filter comprises a laminate II including a wavelength-selective absorption layer and a laminate III obtained by mask-exposing a laminate including a light-absorbing and disappearing layer to ultraviolet light irradiation,
the organic electroluminescence display element is formed by arranging the laminate II, the laminate III, and a light-emitting element layer in this order;
The organic electroluminescent display element according to <4> or <5>, wherein a distance d between the laminate III and the light-emitting element layer, an average area S _B of each blue light-emitting element constituting the light-emitting element layer, and an average area Sf _B of a portion of the first light-transmitting and absorbing site located directly above each blue light-emitting element satisfy the following formulas (3) and (4):
Formula (3) 1.0≦d/√S _B ≦7.0
Formula (4) 0.8≦Sf _B /S _B ≦1.2
＜７＞
the light transmission-absorption filter comprises a laminate II including a wavelength-selective absorption layer and a laminate III obtained by mask-exposing a laminate including a light-absorbing and disappearing layer to ultraviolet light irradiation,
the organic electroluminescence display element is formed by arranging the laminate II, the laminate III, and a light-emitting element layer in this order;
The organic electroluminescent display element according to any one of <4> to <6>, wherein a distance d between the laminate III and the light-emitting element layer, an average area S _G of each green light-emitting element constituting the light-emitting element layer, and an average area Sf _G of a portion of the first light-transmitting and absorbing site located directly above each green light-emitting element satisfy the relationships of the following formulas (5) and (6):
Formula (5) 1.0≦d/ _√SG ≦7.0
Formula (6) 0.8≦Sf _G /S _G ≦1.2
＜8＞
An organic electroluminescence display device comprising the light transmission/absorption filter according to any one of <1> to <3> or the organic electroluminescence display element according to any one of <4> to <7>.

In the present invention, when there are multiple substituents or linking groups, etc. (hereinafter referred to as substituents, etc.) represented by a specific symbol or formula, or when multiple substituents, etc. are specified simultaneously, unless otherwise specified, the respective substituents, etc. may be the same or different from each other. The same applies to the specification of the number of substituents, etc. Furthermore, when multiple substituents, etc. are adjacent to each other (particularly when adjacent), they may be linked to each other to form a ring, unless otherwise specified. Furthermore, unless otherwise specified, rings, such as alicyclic rings, aromatic rings, and heterocyclic rings, may be further condensed to form a condensed ring.
In the present invention, unless otherwise specified, when double bonds exist in a molecule, they may be either E-type or Z-type, or a mixture thereof.
In the present invention, the expression "compound" (including complex) is used to mean not only the compound itself, but also its salts and ions. It also means that compounds with partially modified structures are included as long as the effects of the present invention are not impaired. Furthermore, compounds that are not specified as substituted or unsubstituted may have any substituent as long as the effects of the present invention are not impaired. The same applies to substituents and linking groups.
In the present invention, when describing physical properties and the like by showing a numerical range, if the upper and lower limits of the numerical range are described separately, any of the upper and lower limits can be appropriately combined to form a specific numerical range. On the other hand, when describing multiple numerical ranges expressed using "to", the upper and lower limits forming the numerical range are not limited to the combination of the specific upper and lower limits written before and after "to" as a specific numerical range, but can be a numerical range obtained by appropriately combining the upper and lower limits of each numerical range. Note that in the present invention, a numerical range expressed using "to" means a range that includes the numerical values written before and after "to" as the upper and lower limits.
In the present invention, the term "composition" includes not only a mixture in which the component concentrations are constant (each component is uniformly dispersed), but also a mixture in which the component concentrations vary within a range that does not impair the intended function.
In the present invention, the term "laminate" includes a form in which each layer is laminated directly or via another layer, as well as a form in which each layer is bonded to form a laminate structure.
In the present invention, having a main absorption wavelength band in the wavelength range of XX to YY nm means that the wavelength showing maximum absorption (i.e., the maximum absorption wavelength) is present in the wavelength range of XX to YY nm. Therefore, as long as this maximum absorption wavelength is within the above wavelength range, the entire absorption band including this wavelength may be within the above wavelength range, or may extend outside the above wavelength range. Furthermore, when there are multiple maximum absorption wavelengths, it is sufficient that the maximum absorption wavelength showing the greatest absorbance (referred to as the "maximum maximum absorption wavelength" in the present invention) is present in the above wavelength range. In other words, maximum absorption wavelengths other than the maximum maximum absorption wavelength may be present either inside or outside the above wavelength range of XX to YY nm.
In the present invention, when the term "resin" is simply mentioned, it includes elastomers.
In the present invention, "(meth)acrylate" refers to either or both of acrylate and methacrylate, "(meth)acrylic acid" refers to either or both of acrylic acid and methacrylic acid, and "(meth)acryloyl" refers to either or both of acryloyl and methacryloyl.

The light transmission-absorption filter of the present invention is a light transmission-absorption filter that ensures a desired transmittance of display light when incorporated into a display device, and when incorporated into a display device, it suppresses reflection of external light and also adjusts the color of both the reflected light and the display light to be neutral.
Furthermore, the organic electroluminescent display element of the present invention and the organic electroluminescent display device of the present invention are equipped with the light transmission-absorption filter constituting them, which ensures a desired transmittance of display light, suppresses reflection of external light, and can adjust the color of both the reflected light and the display light to be neutral.

FIG. 1 is a schematic cross-sectional view showing an outline of a light transmission-absorption filter I, which is one embodiment of the light transmission-absorption filter of the present invention, and an outline of the positional relationship with a light emitting element.

[Light transmission absorption filter]
The light transmission-absorption filter of the present invention has a first light transmission-absorption region and a second light transmission-absorption region,
the transmittance T(460) at a wavelength of 460 nm, the transmittance T(530) at a wavelength of 530 nm, and the transmittance T(620) at a wavelength of 620 nm of the first light transmitting/absorbing site each satisfy the following relationships,
This is a light-transmitting-absorbing filter in which the first light-transmitting-absorbing portion and the second light-transmitting-absorbing portion satisfy a relationship in which the sign of at least one of the values a ^* and b ^* in the L ^* a ^* b ^* color space of transmitted light is opposite.

The light transmission-absorption filter of the present invention may be in the form of a film having a certain thickness, and may be a film that stands on its own, or may be a film that is disposed on a substrate film, etc. When the film-shaped light transmission-absorption filter of the present invention is observed in the thickness direction, it is sufficient that a first transmission portion and a second transmission portion are present.
Furthermore, the light transmission-absorption filter of the present invention may have a single-layer structure or a multi-layer structure of two or more layers, as long as it has the first light transmission-absorption region (hereinafter also simply referred to as the "first region") and the second light transmission-absorption region (hereinafter also simply referred to as the "second region"). A multi-layer structure of two or more layers is preferred because it makes it easier to realize the first region and the second region having different light transmission-absorption properties. As the light transmission-absorption filter of the present invention having a multi-layer structure of two or more layers, a structure including two or more layers with different light absorption-transmission properties is preferred. For example, preferred examples include light transmission-absorption filter I obtained by mask-exposing a laminate including a wavelength-selective absorption layer and a light-absorbing-disappearing layer described below with ultraviolet light irradiation, and light transmission-absorption filter II including a laminate obtained by mask-exposing a laminate including a light-absorbing-disappearing layer with ultraviolet light irradiation, and a laminate including a wavelength-selective absorption layer.
Furthermore, the light transmission-absorption filter of the present invention may have light transmission-absorption regions having different light transmission-absorption characteristics, defined as the first region and the second region. The light transmission-absorption filter of the present invention is used by arranging the first region on a light-emitting region (also simply referred to as a "light-emitting region" in the present invention) in the display region of an organic electroluminescence display element (OLED display element), and the second region on a non-light-emitting region (such as a substrate, thin metal wires (metal wiring), and a black bank (black partition wall); also simply referred to as a "non-light-emitting region" in the present invention) in the display region of the OLED display element. As long as the effects of the present invention are achieved, the light transmission-absorption filter of the present invention may further have other light transmission-absorption regions (hereinafter referred to as "other regions") having light transmission-absorption characteristics different from those of the first region and the second region. For example, when an OLED display element has a display area and a non-display area, the first and second areas may be arranged on the display area as described above, and other areas may be arranged on the non-display area (for example, a frame area surrounding the display area, an area covered by a fixing member such as a housing, etc.). The light transmission and absorption characteristics of the other areas may be adjusted as appropriate in accordance with the configuration of the non-display area of the OLED display element.
In the present invention, the light-emitting portion of the OLED display element means a portion in the display area from which display light is emitted, and the non-light-emitting portion of the OLED display element means a portion in the display area from which display light is not emitted.
Therefore, the first and second regions of the light transmission absorption filter of the present invention are configured in accordance with the arrangement of the light emitting portions and non-light emitting portions of the OLED display element into which the light transmission absorption filter of the present invention is incorporated.
Furthermore, the light transmission-absorption filter of the present invention usually has a plurality of the above-mentioned first regions in accordance with the number of light-emitting sections of the OLED display element into which the light transmission-absorption filter of the present invention is incorporated, and the light transmission-absorption filter of the present invention may have a plurality of the above-mentioned second regions in accordance with the number of non-light-emitting sections of the OLED display element into which the light transmission-absorption filter of the present invention is incorporated.
For this reason, the provisions relating to the first portion, the second portion, and the relationship between the first portion and the second portion of the light transmission/absorption filter of the present invention all hold true for all of the multiple first portions and the multiple second portions that may be present. For example, the relationship between the first portion and the second portion in which the signs of a ^* and/or b ^* are opposite satisfies the relationship with the second portion in any of the multiple first portions.

The light transmission-absorption filter of the present invention is a light transmission-absorption filter that, due to its configuration having the above-mentioned first and second sections, ensures a desired transmittance of display light when incorporated into a display device, and when incorporated into a display device, external light reflection is suppressed, and the color of both the reflected light and the color of the display light are adjusted to be neutral. This is thought to be due to the following reasons.
That is, the light transmission-absorption filter of the present invention has transmittances at wavelengths of 460 nm, 530 nm, and 620 nm that satisfy the relationships described below (30% or more at wavelengths of 460 nm and 620 nm, and 40% or more at wavelength 530 nm), thereby ensuring the desired transmittance of display light. As a result of suppressing absorption of light in the emission wavelength region of the OLED display element (light centered at 460 nm, 530 nm, and 620 nm), a decrease in the utilization efficiency of display light is suppressed. Furthermore, in the light transmission-absorption filter of the present invention, the first and second regions satisfy a relationship in which the signs of at least one of the values of a ^* and b ^* in the L ^* a ^* b ^* color space of transmitted light are opposite. Therefore, the chromaticity (a ^* and b ^* ) of the first region and the chromaticity (a ^* and b ^* ) of the second region are adjusted to be complementary, and by arranging the first region of the light-transmitting-absorbing filter of the present invention on the light-emitting portion of the OLED display element and the second region on the non-light-emitting portion of the OLED display element, the light-transmitting-absorbing filter of the present invention can be one in which external light reflection is suppressed and the color of the reflected light is adjusted to be neutral.
The first portion of the light transmission-absorption filter of the present invention has transmittances at wavelengths of 460 nm, 530 nm, and 620 nm that satisfy the relationships described below, and each transmittance is at least 30% or more (at least 40% or more at a wavelength of 530 nm). Therefore, the first portion is a portion that exhibits light transmittance different from that of any of the R (red), G (green), and B (blue) color filters, each of which has a transmittance of less than 30% at a wavelength of 460 nm, 530 nm, or 620 nm.

(Transmittance of the first portion at a specific wavelength)
In the first portion of the light transmission/absorption filter of the present invention, the transmittance T(460) at a wavelength of 460 nm, the transmittance T(530) at a wavelength of 530 nm, and the transmittance T(620) at a wavelength of 620 nm each satisfy the following relationships:
T(460)≧30%
T(530)≧40%
T(620)≧30%
For this reason, the first portion of the light transmission-absorption filter of the present invention is a portion that exhibits light transmittance different from that of any of the R (red), G (green), and B (blue) color filters, in that the transmittance at wavelengths of 460 nm, 530 nm, or 620 nm is less than 30%.
The upper limit values of the transmittance T(460) at a wavelength of 460 nm, the transmittance T(530) at a wavelength of 530 nm, and the transmittance T(620) at a wavelength of 620 nm are not particularly limited, and can be, for example, 80% or less, preferably 70% or less, more preferably 65% or less, and even more preferably 60% or less.
That is, the range of the transmittance T(460) at a wavelength of 460 nm and the range of the transmittance T(620) at a wavelength of 620 nm can be 30 to 80%, preferably 30 to 70%, more preferably 30 to 65%, and even more preferably 30 to 60%, and the range of the transmittance T(530) at a wavelength of 530 nm can be 40 to 80%, preferably 40 to 70%, more preferably 40 to 65%, and even more preferably 40 to 60%.
The transmittance T(460) of the first portion at a wavelength of 460 nm is preferably 45% or more, and more preferably 50% or more. That is, the transmittance T(460) at a wavelength of 460 nm is preferably in the range of 45 to 80%, more preferably 50 to 70%, even more preferably 50 to 65%, and particularly preferably 50 to 60%.

(Relationship between the signs of a ^* and/or b ^* in the first and second moieties)
In the light transmission/absorption filter of the present invention, the relationship in which the sign of at least one of the values of a ^* and b ^* in the L ^* a ^* b ^* color space of transmitted light is opposite between the first region and the second region specifically means that the following (1) and/or (2) is satisfied:
(1) The sign of the a ^* value in the L ^* a ^* b ^* color space of the first region is opposite to the sign of the a ^* value in the L ^* a ^* b ^* color space of the second region, one being + (plus) and the other being − (minus).
(2) The sign of the b ^* value in the L ^* a ^* b ^* color space of the first region is opposite to the sign of the b ^* value in the L ^* a ^* b ^* color space of the second region, one being + (plus) and the other being − (minus).
The light transmission-absorption filter of the present invention satisfies a relationship in which the sign of at least one of the values of a ^* and b ^* in the L ^* a ^* b ^* color space of transmitted light is opposite between the first region and the second region, and therefore the first region and the second region can be said to be regions with different hues.
From the viewpoint of further suppressing external light reflection, it is preferable that the light transmission/absorption filter of the present invention satisfy a relationship in which the signs of both the a ^* and b ^* values in the L ^* a ^* b ^* color space of the transmitted light between the first and second regions are opposite, i.e., that both of the above (1) and (2) are satisfied.
The L ^* a ^* b ^* color space refers to the L ^* a ^* b ^* color space standardized by the CIE (International Commission on Illumination) in 1976. In addition, a ^* and b ^* in the L ^* a ^* b ^* color space of transmitted light are values calculated for each of the first and second regions by multiplying the transmittance of the light-transmitting/absorbing filter in the wavelength range of 380 to 780 nm by the standard relative luminous efficiency for photopic vision and then summing (luminous efficiency correction).
Unless otherwise specified, a ^* and b ^* in the L ^* a ^* b ^* color space of transmitted light refer to a ^* and b ^* of transmitted light at a polar angle of 0° and an azimuthal angle of 0°.

Further details about the first and second sections of the light transmission/absorption filter of the present invention, other than those mentioned above, will be explained below.

<<First part>>
The first portion of the light transmission/absorption filter of the present invention is used by being disposed above the light-emitting portion of an OLED display element.
The light-emitting and non-light-emitting portions of the display element are typically arranged with a width of about 10 to 30 μm in one pixel, and when the light-transmitting and -absorbing filter of the present invention is applied to an OLED display element, the distance between the light-transmitting and -absorbing filter of the present invention and the OLED display element layer is typically set to, for example, about 2 to 40 μm. In such a configuration, the color of the display light can be evaluated by evaluating a ^* and b ^* of the first portion.
a ^* and b ^* of the transmitted light through the first portion usually satisfy the following relationship:
−30.0≦a ^* ≦+30.0
−30.0≦b ^* ≦+30.0
From the viewpoint of adjusting the color tone of the display light to be more neutral, it is preferable that the following relationship be satisfied:
−20.0≦a ^* ≦+20.0
−20.0≦b ^* ≦+20.0
It is more preferable that the following relationship is satisfied:
−10.0≦a ^* ≦+10.0
−10.0≦b ^* ≦+10.0
It is more preferable that the following relationship is satisfied:
−8.0≦a ^* ≦+8.0
−8.0≦b ^* ≦+8.0
It is particularly preferable that the following relationship is satisfied:
−7.0≦a ^* ≦+7.0
−7.0≦b ^* ≦+7.0
In addition, a ^* and b ^* in the formula in this paragraph are respectively synonymous with a ^* and b* in the L ^* a ^* b ^* color space of the transmitted light through the first portion. "A ^* and b ^* in the L ^* a ^* b ^* color space of the transmitted light through the first portion satisfy the above relationship ^" means that a ^* and b ^* both satisfy the above relationship. Furthermore, whether or not the above relationship is satisfied is determined based on a ^* and b ^* obtained by rounding off to one decimal place.

<<Second part>>
The second portion of the light transmission-absorption filter of the present invention is disposed on a non-light-emitting portion of an OLED display element, and therefore the transmittance of the second portion is not particularly limited in a specific wavelength range, as is the transmittance of the first portion.
From the viewpoint of suppressing external light reflection in the light transmission/absorption filter of the present invention and easily adjusting the color of the reflected light to a neutral color, it is preferable that a ^* and b ^* of the transmitted light in the second region satisfy the following relationship:
−30.0≦a ^* ≦+30.0
−30.0≦b ^* ≦+30.0
It is more preferable that the following relationship is satisfied:
−25.0≦a ^* ≦+25.0
−25.0≦b ^* ≦+25.0
It is more preferable that the following relationship is satisfied:
−20.0≦a ^* ≦+20.0
−20.0≦b ^* ≦+20.0
In addition, a ^* and b ^* in the formula in this paragraph are respectively synonymous with a ^* and b* in the L ^* a ^* b ^* color space of the transmitted light through the second portion. "A ^* and b ^* in the L ^* a ^* b ^* color space of the transmitted light through the second portion satisfy the above relationship ^" means that a ^* and b ^* both satisfy the above relationship. Furthermore, whether or not the above relationship is satisfied is determined based on a ^* and b ^* obtained by rounding off to one decimal place.

In the light transmission/absorption filter of the present invention, the area ratio between the first region and the second region corresponds to the area ratio between the light-emitting region and the non-light-emitting region of the OLED display element to which the light transmission/absorption filter of the present invention is applied. That is, the area ratio between the second region (non-light-emitting region of the OLED display element) and the first region (light-emitting region of the OLED display element) is typically second region (non-light-emitting region of the OLED display element)/first region (light-emitting region of the OLED display element) = 90/10 to 60/40, and from the perspective of obtaining a light transmission/absorption filter in which external light reflection is suppressed and both reflected and displayed colors are adjusted to be neutral, a ratio of 85/15 to 60/40 is preferred.

With ^regard to the reflection color exhibited by the light transmission/absorption filter of the present invention, it is preferable that at least one of a ^* and b ^* in the L ^{* a * b *} color space is −5.0 to 5.0, more preferably both a ^* and b ^* in the L ^* a*b* color space are −5.0 to 5.0, and even more preferably both a ^* and b ^* in the L*a ^* b ^* color space are −2.0 to 2.0.
Furthermore, the reflectance exhibited by the light transmission/absorption filter of the present invention is preferably 8.0% or less, more preferably 7.5% or less, and even more preferably 7.0% or less. There is no particular lower limit, and a reflectance of 4.0% or more is practical.
The a ^* and b ^* and reflectance in the L ^* a ^* b ^* color space of the reflected light exhibited by the light transmission/absorption filter of the present invention are values calculated by the method described in the Examples below, as the sum of the reflection spectra of the light-emitting portions and the reflection spectra of the non-light-emitting portions multiplied by the area ratio of the light-emitting portions to the non-light-emitting portions, and then multiplying the resulting reflection spectra by the CIE standard illuminant D65 spectrum and the photopic standard relative luminous efficiency and taking the sum (luminous efficiency correction).

The thickness of the light transmission/absorption filter of the present invention is not particularly limited and can be, for example, 2 to 130 μm. Light transmission/absorption filter I, described below, is preferably 2 to 80 μm, more preferably 2 to 70 μm, and even more preferably 2 to 60 μm. Light transmission/absorption filter II, described below, is preferably 5 to 120 μm, more preferably 7 to 110 μm, and even more preferably 9 to 110 μm. The thickness is a value measured based on the method for measuring the film thickness of the light-absorbing/dissipating layer and wavelength-selective absorption layer, described below.

As one preferred embodiment of the light transmission-absorption filter of the present invention, a light transmission-absorption filter (hereinafter also referred to as “light transmission-absorption filter I”) obtained by mask-exposing a laminate including a wavelength-selective absorption layer and a light-absorbing-disappearing layer (hereinafter also referred to as “laminate I”) to ultraviolet light will be described in detail below.
Furthermore, as another preferred embodiment of the light transmission-absorption filter of the present invention, a light transmission-absorption filter (hereinafter also referred to as “light transmission-absorption filter II”) comprising a laminate (hereinafter also referred to as “laminate III”) obtained by mask-exposing a laminate (hereinafter also referred to as “laminate pre-III”) containing a light-absorbing and disappearing layer with ultraviolet light irradiation, and a laminate (hereinafter also referred to as “laminate II”) containing a wavelength-selective absorption layer will be described in detail.
However, the light transmission/absorption filter of the present invention is not limited to these forms at all.

[Light transmission absorption filter I]
The light transmission/absorption filter I is a light transmission/absorption filter obtained by exposing a laminate I including a wavelength-selective absorption layer and a light-absorbing/disappearing layer to ultraviolet light using a mask.
The wavelength-selective absorption layer means a layer that has light absorption properties that are almost the same as those of the wavelength-selective absorption layer in the laminate I before exposure to ultraviolet light using a mask, regardless of the exposure to ultraviolet light using a mask.
On the other hand, the light-absorbing and dissipative layer refers to a layer that has the property of being discolorable due to a chemical change of the dye contained in the light-absorbing and dissipative layer when irradiated with ultraviolet light. Therefore, the light-absorbing and dissipative layer in the light-transmitting and absorbing filter I of the present invention has light-absorbing portions that have a light-absorbing effect and portions where the light-absorbency has been eliminated (light-absorbency-eliminating portions) according to the pattern of mask exposure by ultraviolet light irradiation (hereinafter also referred to as the "mask pattern"). The light-absorbing portions can exhibit the desired absorbance.
That is, by masking and exposing a laminate I containing a wavelength-selective absorption layer and a light-absorbing and dissipating layer with ultraviolet light irradiation, the masked portions of the laminate I are not exposed and exist as light-absorbing portions with a light-absorbing effect, while the unmasked portions are exposed, and the light-absorbing and dissipating layer in the unmasked portions is discolored to become light-absorbing and dissipating portions, resulting in portions with low light absorption.
As a result, in the light transmission absorption filter I, the region including the wavelength selection absorption layer and the light-absorbing and dissipating layer (light-absorbing and dissipating region) in the unmasked region becomes the first region, and the region including the wavelength selection absorption layer and the light-absorbing and dissipating layer (light-absorbing region) in the masked region becomes the second region.
In particular, as will be described later, when the light-absorbing and dissipating layer exhibits an excellent discoloration rate and there is almost no secondary absorption due to the decomposition of the dye, the light-absorbing and dissipating layer in light-transmitting and absorbing filter I can exhibit optical properties that are close to colorless, and the first portion can exhibit light-absorbing properties that are specific to the wavelength-selective absorption layer.
Unless otherwise specified, the description of laminate I can be preferably applied to light transmission-absorption filter I, except that the layer corresponding to the light-absorbing-disappearing layer in laminate I has a light-absorbing-disappearing site formed by ultraviolet irradiation.
As the laminate I, for example, a laminate including a configuration in which a wavelength selective absorption layer, a diffusion-preventing layer described below, and a light-absorbing and dissipating layer are arranged in this order can be mentioned.

[Light transmission absorption filter II]
Light transmission-absorption filter II is a light transmission-absorption filter comprising laminate III obtained by mask-exposing laminate pre-III, which includes a light-absorbing and dissipating layer, to ultraviolet light, and laminate II, which includes a wavelength-selective and absorbent layer. Note that laminate pre-III does not include a wavelength-selective and absorbent layer, and laminate II does not include a light-absorbing and dissipating layer.
The wavelength-selective absorption layer, like the wavelength-selective absorption layer in the above-described light-transmitting-absorbing filter I, means a layer that has light absorption properties that are almost the same as those of the wavelength-selective absorption layer in the laminate II before mask exposure, regardless of whether or not it is subjected to mask exposure by ultraviolet irradiation.
On the other hand, the light-absorbing and dissipative layer refers to a layer that has the property of being discolorable due to a chemical change of the dye contained in the light-absorbing and dissipative layer when irradiated with ultraviolet light, similar to the light-absorbing and dissipative layer in the light-transmitting and absorbing filter I described above. Thus, the light-absorbing and dissipative layer in the light-transmitting and absorbing filter II of the present invention has light-absorbing portions that have a light-absorbing effect and portions where the light-absorbency has been eliminated (light-absorbency-eliminating portions) according to the pattern of mask exposure by ultraviolet irradiation (hereinafter also referred to as the "mask pattern"). The light-absorbing portions can exhibit the desired absorbance.
That is, by masking and exposing the laminate pre-III containing the light-absorbing and dissipating layer with ultraviolet light irradiation, the masked areas of the laminate pre-III are not exposed and exist as light-absorbing parts with a light-absorbing effect, while the unmasked areas are exposed, and the light-absorbing and dissipating layer in the unmasked areas is discolored to become light-absorbing and dissipating parts and exist as parts with low light absorption, resulting in the laminate III.
As a result, in the light transmission/absorption filter II, the region including the wavelength selection/absorption layer and the light-absorbing/disappearing layer (light-absorbing/disappearing region) in the unmasked region becomes the first region, and the region including the wavelength selection/absorption layer and the light-absorbing/disappearing layer (light-absorbing region) in the masked region becomes the second region.
In particular, as will be described later, when the light-absorbing and dissipating layer exhibits an excellent discoloration rate and there is almost no secondary absorption due to the decomposition of the dye, the light-absorbing and dissipating layer in the light-transmitting and absorbing filter II can exhibit optical properties that are close to colorless, and the first portion can exhibit light-absorbing properties that are specific to the wavelength-selective and absorbing layer.
Unless otherwise specified, the description of laminate pre-III can be preferably applied to laminate III in light transmission-absorption filter II, except that the layer corresponding to the light-absorbing and dissipating layer in laminate pre-III has a light-absorbing and dissipating site formed by ultraviolet irradiation.
A preferred example of the laminate II is a laminate including a configuration in which a first wavelength selective absorption layer (described later), a gas barrier layer (described later), and a first wavelength selective absorption layer (described later) are arranged in this order. A preferred example of the laminate pre-III is a laminate including a configuration in which a diffusion-preventing layer (described later), a light-absorbing and dissipating layer (described later), and a gas barrier layer (described later) are arranged in this order.

Regarding light transmission-absorption filter I, the positional relationship between the first and second portions in the light transmission-absorption filter of the present invention and the OLED display element, which is a light-emitting element, will be explained below with reference to Fig. 1. Note that the above positional relationship is not limited to light transmission-absorption filter I, but is also applicable to light transmission-absorption filters of the present invention such as light transmission-absorption filter II.
1 , the light-transmitting-absorbing filter I (10) is obtained by mask-exposing the laminate I (not shown), and has a mask-exposed wavelength-selective-absorbing layer 3 and a mask-exposed light-absorbing and decolorizable layer 4. In the mask-exposed light-absorbing and decolorizable layer 4, the unmasked areas become light-absorbent loss areas 5, and the masked areas become light-absorbing areas 6. The mask pattern is applied so as to correspond to the arrangement of the light-emitting sections 7 and non-light-emitting sections 8 of the OLED display element, and specifically, the pattern is such that the areas of the laminate I located above the light-emitting sections 7 of the OLED display element are masked, and the areas of the laminate I located above the non-light-emitting sections 8 of the OLED display element are not masked. As a result, the light-transmitting-absorbing filter I (10) has a first region 1 including the masked wavelength-selective-absorbing layer 3 and the light-absorbency-disappearing region 5 at a location corresponding to the top of the light-emitting region 7 of the OLED display element, and a second region 2 including the masked wavelength-selective-absorbing layer 3 and the light-absorbent region 6 at a location corresponding to the top of the non-light-emitting region 8 of the OLED display element.
1, the mask-exposed light-absorbing and decolorizing layer 4, the mask-exposed wavelength-selective absorption layer 3, and the light-emitting portion 7 of the OLED display element are arranged in this order, but they may also be arranged in this order: the mask-exposed wavelength-selective absorption layer 3, the mask-exposed light-absorbing and decolorizing layer 4, and the light-emitting portion 7 of the OLED display element. This also applies to the light transmission and absorption filters of the present invention, such as light transmission and absorption filter II.

The following describes laminate I, which includes a wavelength-selective absorption layer and a light-absorbing and dissipating layer, laminate II, which includes a wavelength-selective absorption layer, and laminate pre-III, which includes a light-absorbing and dissipating layer.

[Laminate I]
The laminate I is a laminate including a light-absorbing and dissipating layer and a wavelength-selective and absorbing layer, specifically, a light-absorbing and dissipating layer containing a resin, a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and a compound that generates radicals upon irradiation with ultraviolet light;
It is preferable that the laminate includes a wavelength selective absorption layer that contains a resin and a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and does not contain a compound that generates radicals when irradiated with ultraviolet light.
[Laminate II]
The laminate II is a laminate including a wavelength-selective absorption layer, and specifically, it is preferably a laminate including a wavelength-selective absorption layer that contains a resin and a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and does not contain a compound that generates radicals upon irradiation with ultraviolet light, however, the laminate II does not include a light-absorbing and disappearing layer.
[Laminate pre-III]
The laminate pre-III is a laminate including a light-absorbing and dissipating layer, and more specifically, it is preferably a laminate including a light-absorbing and dissipating layer containing a resin, a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and a compound that generates radicals upon irradiation with ultraviolet light, however, the laminate pre-III does not include a wavelength-selective absorption layer.

In the present invention, unless otherwise specified, the components constituting the light-absorbing and dissipating layers in Laminate I and Laminate pre-III (such as resins, dyes, compounds that generate radicals upon UV irradiation, and other components that may be optionally contained) may each be contained in the light-absorbing and dissipating layers in Laminate I and Laminate pre-III, either singly or in combination of two or more. Furthermore, in the present invention, the components constituting the wavelength-selective absorption layers in Laminate I and Laminate II (such as resins, dyes, and other components that may be optionally contained) may each be contained in the wavelength-selective absorption layers in Laminate I and Laminate II, either singly or in combination of two or more. This also applies to a light-transmitting and absorbing filter I produced using Laminate I and a light-transmitting and absorbing filter II produced using Laminate II and Laminate pre-III.

In the present invention, the main absorption wavelength band of the dye refers to the main absorption wavelength band of the dye measured in the state of laminate I, for each of laminates II and pre-III, or for the laminate of laminates II and pre-III. Specifically, the measurement is performed in the state of laminate I, for each of laminates II and pre-III, or for the laminate of laminates II and pre-III under the conditions described in [Measurement of absorbance of first and second portions] in the Examples described later.
In each of the laminates I, II, and pre-III, the "dye" is dispersed (preferably dissolved) in the resin contained in the same layer (light-absorbing and dissipating layer or wavelength-selective and absorbing layer), thereby making the laminate I, II, and pre-III filters exhibiting a specific absorption spectrum derived from the dye. This dispersion may be random, regular, or the like.

The light-absorbing and dissipating layer has a compound that generates radicals when irradiated with ultraviolet light dispersed (preferably dissolved) in the resin, so that when irradiated with ultraviolet light, radicals are generated, and the generated radicals react with the dye, causing a chemical change in the dye, fading and decolorizing the dye.
Furthermore, when the light-absorbing and dissipative layers constituting the laminate I and laminate pre-III contain, as compounds that generate radicals upon ultraviolet irradiation, compound A having an acid group and compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A, as described below, the efficiency of generating radical species upon ultraviolet irradiation is improved compared to when a commonly used photoradical generator such as a benzophenone compound is used. Therefore, even when ultraviolet irradiation is performed under mild temperature conditions such as room temperature, sufficient radical species are generated, and these radical species react directly or indirectly with the dye, causing the dye to decompose, thereby fading and discoloring the dye.
Furthermore, in the light-absorbing and disappearing layers constituting the laminate I and laminate pre-III, when compound A having an acid group is bonded to a polymer constituting the resin contained in the light-absorbing and disappearing layer, radicals are generated in the vicinity of the dye upon irradiation with ultraviolet light, which has the effect of making the radicals more likely to react with the dye.
Furthermore, "compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A," which will be described later, forms a hydrogen bond with compound A and is dispersed (preferably dissolved) in the resin, or, when compound A containing the acid group is bonded to a polymer constituting the resin, forms a hydrogen bond with compound A in the resin, and when irradiated with ultraviolet light, generates a radical, and the generated radical reacts with a nearby dye, making the radical more likely to react with the dye, thereby enabling the dye to be faded and decolorized more efficiently.
The light-absorbing and dissipative layers constituting the laminate I and the laminate pre-III will be described in detail below.

<<Light-absorbing and dissipative layer>>
<Dyes Having a Main Absorption Wavelength Band in the Wavelength Range of 400 to 700 nm>
Specific examples of dyes having a main absorption wavelength band in the wavelength range of 400 to 700 nm and used in the light-absorbing and dissipative layers constituting the laminate I and laminate pre-III include squaraine (SQ), cyanine (CY), benzylidene, cinnamylidene, azo, and indoaniline coloring matter (dyes).

Among these, the light-absorbing and dissipative layer preferably contains at least one of an azo dye represented by any one of general formulas (i) to (iv) below and an indoaniline dye represented by general formula (v) below, because these dyes are less likely to produce secondary colored structures due to dye decomposition. The azo dye represented by general formula (i) below is a dye having a main absorption wavelength band in the wavelength range of approximately 400 to 500 nm, the azo dye represented by any one of general formulas (ii) to (iv) below is a dye having a main absorption wavelength band in the wavelength range of approximately 450 to 650 nm, and the indoaniline dye represented by general formula (v) below is a dye having a main absorption wavelength band in the wavelength range of approximately 580 to 700 nm. When the light-absorbing and dissipative layer has this configuration, it can exhibit excellent discoloration properties when irradiated with ultraviolet light.

The azo dye represented by the following general formula (i), the azo dye represented by the following general formula (ii), the azo dye represented by the following general formula (iii), the azo dye represented by the following general formula (iv), and the indoaniline dye represented by the following general formula (v), which can be contained in the light-absorbing and disappearing layer, may each be one type or two or more types.
The light-absorbing and disappearing layer may contain a squaraine dye represented by general formula (1) which will be described later in relation to the wavelength-selective absorption layer.
The light-absorbing and disappearing layer may also contain a dye other than the azo dye represented by any one of general formulas (i) to (iv), the indoaniline dye represented by general formula (v), and the squaraine dye represented by general formula (1) described below. By optimizing the blending ratio of the azo dye represented by any one of general formulas (i) to (iv) described below and the indoaniline dye represented by general formula (v) described below, in combination with a wavelength-selective absorption layer described below, it is possible to suppress a change in the color of reflected light compared to when no dye is contained (hereinafter, also referred to as "adjusting the color of reflected light to be more neutral").

It is preferable that the light-absorbing and disappearing layer contains a dye that has absorption in a wavelength region with low absorbance compared to the main absorption wavelength band of each dye contained in the wavelength-selective absorption layer described below, from the viewpoint of more easily achieving both suppression of external light reflection and suppression of brightness reduction.
Specifically, the light-absorbing and dissipating layer preferably contains a dye having a main absorption wavelength band that is 5 nm or more away from any of the main absorption wavelength bands of the dyes contained in the wavelength-selective and absorbent layer described below.
In an embodiment applied to an OLED display device, the "dye" contained in the light-absorbing and dissipative layer preferably includes at least one of the following dyes E to G, which have main absorption wavelength bands in different wavelength regions.
Dye E: a dye having a main absorption wavelength band in a wavelength range of 430 to 480 nm Dye F: a dye having a main absorption wavelength band in a wavelength range of 500 to 590 nm Dye G: a dye having a main absorption wavelength band in a wavelength range of 600 to 660 nm The dye E that can be contained in the light-absorbing and disappearing layer may be one type or two or more types. As with dye E, the dyes F and G that can be contained in the light-absorbing and disappearing layer may each independently be one type or two or more types.
The wavelength range in which the dye E has its main absorption wavelength band is preferably 430 to 475 nm, more preferably 430 to 470 nm, and even more preferably 430 to 465 nm.
The wavelength range in which the dye F has its main absorption wavelength band is preferably 505 to 585 nm, more preferably 510 to 580 nm, and even more preferably 515 to 580 nm.
The wavelength range in which the dye G has a main absorption wavelength band is preferably 610 to 655 nm, more preferably 610 to 650 nm, and even more preferably 610 to 640 nm.
The light-absorbing and dissipative layer may contain dyes other than the dyes E to G.

In particular, from the viewpoint of combination with the wavelength-selective absorption layer described below, it is preferable that the dyes E, F, and G are a combination of at least two types, and examples include a combination that includes at least dyes E and F and may further include dye G. Among these, it is preferable that the wavelength-selective absorption layer described below contains all of the dyes A to D described below, and the light-absorbing and disappearing layer contains at least two types of dyes E to G, from the viewpoints that the suppression of external light reflection and the suppression of brightness reduction of the light transmission-absorption filters I and II can be more highly realized, and that when the obtained light transmission-absorption filters I or II are applied to a display device, the color of the reflected light can be adjusted to a neutral color.
In relation to the dyes that may be contained in the wavelength-selective absorption layer described below, the main absorption wavelength band of the dye E is preferably 5 to 70 nm (more preferably 5 to 60 nm) away from the main absorption wavelength band of the dye A described below, and 5 to 80 nm (more preferably 10 to 80 nm) away from the main absorption wavelength band of the dye B described below. When the wavelength-selective absorption layer has two or more layers, the main absorption wavelength band of the dye E is preferably 1 to 70 nm (more preferably 1 to 60 nm) away from the main absorption wavelength band of the dye A described below, and 5 to 80 nm (more preferably 10 to 80 nm) away from the main absorption wavelength band of the dye B described below.
Furthermore, the main absorption wavelength band of the dye F is preferably 5 to 80 nm (more preferably 10 to 80 nm) away from the main absorption wavelength band of the dye B described below, and is preferably 5 to 60 nm (more preferably 5 to 50 nm) away from the main absorption wavelength band of the dye C described below.
The main absorption wavelength band of the dye G is preferably 5 to 60 nm (more preferably 10 to 50 nm) away from the main absorption wavelength band of the dye C described below, and is preferably 5 to 80 nm (more preferably 10 to 60 nm) away from the main absorption wavelength band of the dye D described below.

In the present invention, in the dyes represented by the following general formulas, the cation exists in a delocalized state, and multiple tautomeric structures exist. Therefore, in the present invention, if at least one tautomeric structure of a dye corresponds to one of the general formulas, the dye is considered to be a dye represented by that general formula. Therefore, a dye represented by a specific general formula can also be said to be a dye whose at least one tautomeric structure can be represented by that specific general formula. In the present invention, the dye represented by a general formula may have any tautomeric structure, as long as at least one of the tautomeric structures corresponds to that general formula.

(1-1) An azo dye represented by the following general formula (i):

In the above formula, R ¹⁷ and R ¹⁸ each independently represent a hydrogen atom or a monovalent substituent.
R ¹⁹ represents a hydrogen atom, an aliphatic group, an aryl group, a heterocyclic group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, or a sulfamoyl group.
Q represents a residue of a diazo component.

Examples of the monovalent substituent which may be taken as R ¹⁷ and R ¹⁸ include a halogen atom (a fluorine atom, a chlorine atom, a bromine atom, an iodine atom), an aliphatic group, an aryl group, a heterocyclic group, a cyano group, a carboxy group, a carbamoyl group, an aliphatic oxycarbonyl group, an aryloxycarbonyl group, an acyl group, a hydroxy group, an aliphatic oxy group, an aryloxy group, an acyloxy group, a carbamoyloxy group, a heterocyclic oxy group, an amino group (—NH ₂ ), an aliphatic amino group, an arylamino group, a heterocyclic amino group, an acylamino group, a carbamoylamino group, a sulfamoylamino group, an aliphatic oxycarbonylamino group, an aryloxycarbonylamino group, an aliphatic sulfonylamino group, an arylsulfonylamino group, a nitro group, an aliphatic thio group, an arylthio group, an aliphatic sulfonyl group, an arylsulfonyl group, a sulfamoyl group, a sulfo group, an imido group, and a heterocyclic thio group. Among these, mainly from the viewpoint of imparting solubility, an aliphatic group, an aryl group, a heterocyclic group, a cyano group, a carbamoyl group, an aliphatic oxycarbonyl group, an aryloxycarbonyl group, an acyl group, an aliphatic oxy group, an aryloxy group, an aliphatic amino group, or an arylamino group is preferred.
These substituents that can be taken as R ¹⁷ and R ¹⁸ may be further substituted.

The aliphatic groups that can be represented by R ¹⁷ to R ¹⁹ may further have a monovalent substituent, and may be saturated or unsaturated, or may be cyclic. Specific examples include alkyl groups, substituted alkyl groups, alkenyl groups, substituted alkenyl groups, alkynyl groups, substituted alkynyl groups, aralkyl groups, and substituted aralkyl groups. The total number of carbon atoms in the aliphatic group is preferably 1 to 30, and more preferably 1 to 16. Specific examples of the aliphatic group include a methyl group, an ethyl group, a butyl group, an isopropyl group, a t-butyl group, a hydroxyethyl group, a methoxyethyl group, a cyanoethyl group, a trifluoromethyl group, a 3-sulfopropyl group, a 4-sulfobutyl group, a 2-(2-hydroxyethoxy)ethyl group, a 2-(2-(acetyloxy)ethoxy)ethyl group, a cyclohexyl group, a benzyl group, a 2-phenethyl group, a vinyl group, and an allyl group.
Examples of the monovalent substituent that may be present include the monovalent substituents that may be present as R ¹⁷ and R ¹⁸ , and the same applies to the following description of the monovalent substituent that may be present. Preferred examples of the monovalent substituent that may be present include an alkoxy group, an acyloxy group, and a hydroxy group. These substituents may further have a substituent, and preferred examples thereof include an alkoxy group, an acyloxy group, and a hydroxy group.

The aryl group which can be taken as R ¹⁷ to R ¹⁹ may further have a monovalent substituent, and is preferably an aryl group having a total carbon number of 6 to 30, more preferably 6 to 16. Specific examples include a phenyl group, a 4-tolyl group, a 4-methoxyphenyl group, a 2-chlorophenyl group, a 3-(3-sulfopropylamino)phenyl group, a 4-sulfamoylphenyl group, a 4-(ethoxyethylsulfamoyl)phenyl group, and a 3-(dimethylcarbamoyl)phenyl group.

The heterocyclic group that can be taken as R ¹⁷ to R ¹⁹ may be a saturated or unsaturated aliphatic ring group or an aromatic ring group, with an aromatic heterocyclic group being preferred. Examples of ring-constituting atoms that constitute the heterocyclic group include those containing at least one heteroatom such as a nitrogen atom, a sulfur atom, or an oxygen atom, and may further have a monovalent substituent. The heterocyclic group is preferably a heterocyclic group having a total of 1 to 30 carbon atoms, and more preferably a heterocyclic group having 1 to 15 carbon atoms. Specific examples include a 2-pyridyl group, a 2-thienyl group, a 2-thiazolyl group, a 2-benzothiazolyl group, a 2-benzoxazolyl group, and a 2-furyl group.

The carbamoyl groups that can be taken as R ¹⁷ to R ¹⁹ include unsubstituted carbamoyl groups (—CONH ₂ ) as well as carbamoyl groups substituted with an aliphatic group, aryl group, or the like.
The carbamoyl groups which can be represented by R ¹⁷ to R ¹⁹ may further have a monovalent substituent, and are preferably carbamoyl groups having a total of 1 to 30 carbon atoms, and more preferably carbamoyl groups having 1 to 16 carbon atoms. Specific examples include methylcarbamoyl groups, dimethylcarbamoyl groups, phenylcarbamoyl groups, and N-methyl-N-phenylcarbamoyl groups.

As the aliphatic group in the aliphatic oxycarbonyl group which can be taken as R ¹⁷ and R ¹⁸ , the descriptions of the aliphatic groups which can be taken as R ¹⁷ to R ¹⁹ can be applied.
The aliphatic oxycarbonyl group which can be represented by R ¹⁷ and R ¹⁸ may further have a monovalent substituent, may be saturated or unsaturated, may be cyclic, and is preferably an aliphatic oxycarbonyl group having a total of 2 to 30 carbon atoms, more preferably an aliphatic oxycarbonyl group having a total of 2 to 16 carbon atoms. Specific examples include a methoxycarbonyl group, an ethoxycarbonyl group, and a 2-methoxyethoxycarbonyl group.
The alkoxycarbonyl group that can be taken as R ¹⁹ may further have a monovalent substituent, may be saturated or unsaturated, may be cyclic, and is preferably an alkoxycarbonyl group having a total of 2 to 30 carbon atoms, more preferably an alkoxycarbonyl group having a total of 2 to 16 carbon atoms. Specific examples include a methoxycarbonyl group, an ethoxycarbonyl group, and a 2-methoxyethoxycarbonyl group.

The aryloxycarbonyl group which can be taken as R ¹⁷ to R ¹⁹ may further have a monovalent substituent, and is preferably an aryloxycarbonyl group having a total of 7 to 30 carbon atoms, more preferably an aryloxycarbonyl group having 7 to 16 carbon atoms. Specific examples include a phenoxycarbonyl group, a 4-methylphenoxycarbonyl group, and a 3-chlorophenoxycarbonyl group.

The acyl group that can be taken as R ¹⁷ to R ¹⁹ includes an aliphatic carbonyl group, an arylcarbonyl group, and a heterocyclic carbonyl group, and preferably has a total of 1 to 30 carbon atoms, more preferably has a total of 1 to 16 carbon atoms. Specific examples include an acetyl group, a methoxyacetyl group, a thienoyl group, and a benzoyl group.

As the aliphatic group in the aliphatic sulfonyl group which can be taken as R ¹⁷ and R ¹⁸ , the descriptions of the aliphatic groups which can be taken as R ¹⁷ to R ¹⁹ can be applied.
The aliphatic sulfonyl group which can be represented by R ¹⁷ and R ¹⁸ may further have a monovalent substituent, may be saturated or unsaturated, may be cyclic, and preferably has a total of 1 to 30 carbon atoms, more preferably 1 to 16. Specific examples include a methanesulfonyl group, a methoxymethanesulfonyl group, and an ethoxyethanesulfonyl group.
The alkylsulfonyl group that can be taken as R ¹⁹ may further have a monovalent substituent, may be saturated or unsaturated, may be cyclic, and preferably has a total of 1 to 30 carbon atoms, more preferably 1 to 16. Specific examples include a methanesulfonyl group, a methoxymethanesulfonyl group, and an ethoxyethanesulfonyl group.

The arylsulfonyl group which can be represented by R ¹⁷ to R ¹⁹ may further have a monovalent substituent, and preferably has a total of 6 to 30 carbon atoms, more preferably 6 to 18 carbon atoms. Specific examples include benzenesulfonyl and toluenesulfonyl groups.

The sulfamoyl groups that can be taken as R ¹⁷ to R ¹⁹ include unsubstituted sulfamoyl groups (—SO ₂ NH ₂ ) as well as sulfamoyl groups substituted with an aliphatic group, aryl group, or the like.
The sulfamoyl group which can be taken as R ¹⁷ to R ¹⁹ may further have a monovalent substituent, and preferably has a total of 0 to 30 carbon atoms, more preferably 0 to 16 carbon atoms. Specific examples include an unsubstituted sulfamoyl group, a dimethylsulfamoyl group, and a di-(2-hydroxyethyl)sulfamoyl group.

The imido group which can be taken as R ¹⁷ and R ¹⁸ may further have a monovalent substituent, and is preferably a 5- or 6-membered ring imido group. The imido group preferably has a total of 4 to 30 carbon atoms, more preferably 4 to 20. Specific examples include succinimide and phthalimide groups.

As the aliphatic group in the aliphatic oxy group, aliphatic amino group, aliphatic oxycarbonylamino group, aliphatic sulfonylamino group and aliphatic thio group which can be taken as R ¹⁷ and R ¹⁸ , the descriptions of the aliphatic groups which can be taken as R ¹⁷ to R ¹⁹ can be applied.
As the aryl group in the aryloxy group, arylamino group, aryloxycarbonylamino group, arylsulfonylamino group and arylthio group which can be taken as R ¹⁷ and R ¹⁸ , the descriptions of the aryl group which can be taken as R ¹⁷ to R ¹⁹ can be applied.
As the acyl group in the acyloxy group and acylamino group which can be taken as R ¹⁷ and R ¹⁸ , the descriptions of the acyl groups which can be taken as R ¹⁷ to R ¹⁹ can be applied.
As the carbamoyl group in the carbamoyloxy group and carbamoylamino group which can be taken as R ¹⁷ and R ¹⁸ , the descriptions of the carbamoyl groups which can be taken as R ¹⁷ to R ¹⁹ can be applied.
As the heterocyclic group in the heterocyclic oxy group, heterocyclic amino group and heterocyclic thio group which can be taken as R ¹⁷ and R ¹⁸ , the descriptions of the heterocyclic groups which can be taken as R ¹⁷ to R ¹⁹ can be applied.
As for the sulfamoyl group in the sulfamoylamino group which can be taken as R ¹⁷ and R ¹⁸ , the description of the sulfamoyl group which can be taken as R ¹⁷ to R ¹⁹ can be applied.

The diazo component residue represented by Q means a residue of the diazo component "Q-NH ₂ ". In particular, from the viewpoint of the target color reproducibility, Q is preferably an aryl group or an aromatic heterocyclic group.
The aromatic hydrocarbon ring constituting the aryl group that can be taken as Q may be a monocyclic ring or a fused ring, and is preferably a monocyclic ring. An aryl group having a total of 6 to 30 carbon atoms is preferred, and an aryl group having a total of 6 to 16 carbon atoms is more preferred. Specifically, a phenyl group is preferred. The aryl group that can be taken as Q may have a substituent, and preferred examples of the substituent that may be had include a sulfamoyl group (preferably an alkylsulfamoyl group or a dialkylsulfamoyl group), a sulfonyl group (preferably an alkylsulfonyl group), and a cyano group.

The aromatic heterocyclic group that can be taken as Q is preferably an aromatic ring group containing at least one heteroatom such as a nitrogen atom, a sulfur atom, or an oxygen atom as a ring-constituting atom constituting the heterocyclic group, and is preferably constituted by a 5- or 6-membered ring. The number of carbon atoms in the aromatic heterocyclic group is preferably 1 to 25, more preferably 1 to 15. The aromatic heterocycle constituting the aromatic heterocyclic group may be a monocycle or a fused ring, and is preferably a monocycle.
Specific examples of the aromatic heterocyclic group include a pyrazole group, a 1,2,4-triazole group, an isothiazole group, a benzisothiazole group, a thiazole group, a benzothiazole group, an oxazole group, and a 1,2,4-thiadiazole group.

As examples of azo dyes represented by the above general formula (i), the specific examples of azo dyes represented by general formula (i) described in paragraph [0042] of WO 2023/234353 can be applied as is. However, the present invention is not limited to these.

(1-2) An azo dye represented by the following general formula (ii):

In the above formula, R ²¹ to R ²⁴ , R ²⁶ and R ²⁷ each represent a hydrogen atom, a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, —OR ¹⁰⁸ , —SR ¹⁰⁹ , —NR ¹¹⁰ R ¹¹¹ , —S(═O) ₂ NR ¹¹² R ¹¹³ , —C(═O)NR ¹¹⁴ R ¹¹⁵ , —NHC(═O)R ¹¹⁶ , —C(═O)OR ¹¹⁷ , —O(CH ₂ CH ₂ O) _n R ¹¹⁸ , —O(CH ₂ CH ₂ S) _n R ¹¹⁹ , —S(CH ₂ CH ₂ O) _n R ¹²⁰ , —S(CH ₂ CH ₂ S) _n R ¹²¹ , acyclic hydrocarbon groups, monocyclic hydrocarbon groups, condensed polycyclic hydrocarbon groups, or heterocyclic groups.
R ¹⁰⁸ to R ¹²¹ each represent a hydrogen atom, an acyclic hydrocarbon group, a monocyclic hydrocarbon group, a condensed polycyclic hydrocarbon group, or a heterocyclic group, and n is a positive integer.
The acyclic hydrocarbon group, the monocyclic hydrocarbon group, the condensed polycyclic hydrocarbon group and the heterocyclic group include a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, —OR ¹⁰⁸ , —SR ¹⁰⁹ , —NR ¹¹⁰ R ¹¹¹ , —S(═O) ₂ NR ¹¹² R ¹¹³ , —C(═O)NR ¹¹⁴ R ¹¹⁵ , —NHC(═O)R ¹¹⁶ , —C(═O)OR ¹¹⁷ , —O(CH ₂ CH ₂ O) _n R ¹¹⁸ , —O(CH ₂ CH ₂ S) _n R ¹¹⁹ , —S(CH ₂ CH ₂ O) _n R ¹²⁰ and —S(CH ₂ CH ₂ S) _n R ¹²¹ The aryl group may have one or more substituents selected from the group consisting of acyclic hydrocarbon groups, monocyclic hydrocarbon groups, condensed polycyclic hydrocarbon groups, and heterocyclic groups.

The acyclic hydrocarbon group which can be taken as R ²¹ to R ²⁴ , R ²⁶ , R ²⁷ and R ¹⁰⁸ to R ¹²¹ means an acyclic alkyl group in which one hydrogen atom has been removed from an acyclic alkane. However, the acyclic alkyl group may have a ring structure as a substituent. The number of carbon atoms in the acyclic alkyl group is preferably 1 to 30, more preferably 1 to 20, still more preferably 1 to 12, particularly preferably 1 to 8, and of these, 1 to 6 is preferred.
The monocyclic hydrocarbon group which may be taken as R ²¹ to R ²⁴ , R ²⁶ , R ²⁷ and R ^to R ¹²¹ means a monocyclic cycloalkyl group, a monocyclic cycloalkenyl group, a monocyclic cycloalkynyl group or a monocyclic aryl group, which is a group in which one hydrogen atom has been removed from a monocyclic aliphatic hydrocarbon ring (which may be any of a monocyclic cycloalkane, a monocyclic cycloalkene and a monocyclic cycloalkyne) or a monocyclic aromatic hydrocarbon ring.
The number of carbon atoms in the monocyclic cycloalkyl group, monocyclic cycloalkenyl group, and monocyclic cycloalkynyl group is not particularly limited as long as it is structurally possible, but is preferably 3 to 30, more preferably 3 to 20, and even more preferably 3 to 16. The number of carbon atoms in the monocyclic aryl group is more preferably 6 to 30, more preferably 6 to 20, and even more preferably 6 to 16.
The fused polycyclic hydrocarbon group which may be taken as R ²¹ to R ²⁴ , R ²⁶ , R ²⁷ and R ^to R ¹²¹ means a fused polycyclic cycloalkyl group, a fused polycyclic cycloalkenyl group, a fused polycyclic cycloalkynyl group or a fused polycyclic aryl group, which is a group in which one hydrogen atom has been removed from a fused polycyclic aliphatic hydrocarbon ring (which may be any of a fused polycyclic cycloalkane, a fused polycyclic cycloalkene and a fused polycyclic cycloalkyne) or a fused polycyclic aromatic hydrocarbon ring.
The number of carbon atoms in the fused polycyclic cycloalkyl group, fused polycyclic cycloalkenyl group, and fused polycyclic cycloalkynyl group is not particularly limited as long as it is structurally possible, but is preferably 8 to 30, and more preferably 8 to 20. The number of carbon atoms in the fused polycyclic aryl group is more preferably 12 to 30, and more preferably 12 to 20.
As the heterocyclic groups which can be taken as R ²¹ to R ²⁴ , R ²⁶ , R ²⁷ and R ¹⁰⁸ to R ¹²¹ , the descriptions of the heterocyclic groups which can be taken as R ¹⁷ to R ¹⁹ in the above general formula (i) can be applied.
n is preferably an integer of 1 to 12, more preferably an integer of 1 to 6, and even more preferably an integer of 1 to 3.

With regard to the specific groups of the respective substituents in general formula (ii), unless otherwise specified, the descriptions of R ¹ to R ⁴ , R ⁶ , R ⁷ , and R ⁸ to R ²¹ in the compounds represented by general formula [1] described in JP-A-5-257180 can be applied as they are to R ²¹ to R ²⁴ , R ²⁶ , R ²⁷ , and R ¹⁰⁸ to R ¹²¹ , respectively.

R ²¹ is preferably a cyano group, a nitro group, —OR ¹⁰⁸ , an acyclic hydrocarbon group (preferably an acyclic alkyl group or an acyclic alkenyl group) or a heterocyclic group, more preferably a cyano group or a nitro group, or an acyclic alkyl group substituted with a halogen atom (preferably an alkyl group substituted with a fluorine atom), and still more preferably a cyano group.
R ²² is preferably a hydrogen atom, a cyano group, an acyclic hydrocarbon group (preferably an acyclic alkyl group) or a monocyclic hydrocarbon group, more preferably a hydrogen atom, an alkyl group or an aryl group, and even more preferably an alkyl group or an aryl group.
At least one of R ²¹ and R ²² is preferably a cyano group or a nitro group, or an acyclic alkyl group substituted with a halogen atom, a cyano group, or a nitro group.
R ²³ is preferably a hydrogen atom, —OR ¹⁰⁸ , —SR ¹⁰⁹ , —NR ¹¹⁰ R ¹¹¹ , —C(═O)NR ¹¹⁴ R ¹¹⁵ , —NHC(═O)R ¹¹⁶ , —O(CH ₂ CH ₂ O) _n R ¹¹⁸ , —O(CH ₂ CH ₂ S) _n R ¹¹⁹ , —S(CH ₂ CH ₂ O) _n R ¹²⁰ , —S(CH ₂ CH ₂ S) _n R ¹²¹ or an acyclic hydrocarbon group (preferably an acyclic alkyl group), and a hydrogen atom, —OR ¹⁰⁸ , —SR ¹⁰⁹ , —NR ¹¹⁰ R ¹¹¹ , —NHC(═O)R ¹¹⁶ or an acyclic alkyl group is more preferred, and —NHC(═O)R ¹¹⁶ is even more preferred. Here, R ¹⁰⁸ to R ¹¹¹ , R ¹¹⁶ and R ¹¹⁸ to R ¹²¹ are preferably acyclic alkyl groups.
R ²⁴ and R ²⁷ are preferably hydrogen atoms.
R ²⁶ is preferably a hydrogen atom, —OR ¹⁰⁸ , —SR ¹⁰⁹ , —NR ¹¹⁰ R ¹¹¹ , —NHC(═O)R ¹¹⁶ , —O(CH ₂ CH ₂ O) _n R ¹¹⁸ , —O(CH ₂ CH ₂ S) _n R ¹¹⁹ , —S(CH ₂ CH ₂ O) _n R ¹²⁰ , —S(CH ₂ CH ₂ S) _n R ¹²¹ or an acyclic hydrocarbon group (preferably an acyclic alkyl group), more preferably a hydrogen atom, —OR ¹⁰⁸ or —SR ¹⁰⁹ , and even more preferably a hydrogen atom. Here, R ¹⁰⁸ to R ¹¹¹ , R ¹¹⁶ , and R ¹¹⁸ to R ¹²¹ are preferably acyclic alkyl groups.
In —NR ¹¹⁰ R ¹¹¹ located at the ortho position relative to R ²⁴ and R ²⁶ , R ¹¹⁰ is preferably an acyclic alkyl group, and R ¹¹¹ is preferably an acyclic alkyl group, more preferably an unsubstituted acyclic alkyl group, or an acyclic alkyl group having —OR ¹⁰⁸ , a monocyclic hydrocarbon group, or a fused polycyclic hydrocarbon group as a substituent, wherein R ¹⁰⁸ is preferably a hydrogen atom or an acyclic alkyl group.

Specific examples of dyes represented by general formula (ii) include the compounds used in the examples described below, as well as the compounds described in paragraphs [0023] to [0034] of JP-A No. 5-257180, the compounds described in paragraphs [0050] and [0052] of JP-A No. 2013-129712, compound D-18 described in paragraph [0055], and the compound described in paragraph [0056]. However, the present invention is not limited to these.

(1-3) An azo dye represented by the following general formula (iii):

In the above formula, R ³¹ represents a hydrogen atom, an alkyl group, an alkoxy group, a cyano group, a carbonyl group (preferably an alkyloxycarbonyl group or an aryloxycarbonyl group), an aromatic group, or a heterocyclic group.
R ³² represents a hydrogen atom, an alkyl group, an alkoxy group, a cyano group, a nitro group, a carbonyl group (preferably an alkyloxycarbonyl group or an aryloxycarbonyl group), an aromatic group or a heterocyclic group.
R ³⁴ and R ³⁵ each independently represent a hydrogen atom, an alkyl group, or an aromatic group.
R ³⁷ represents a hydrogen atom, an alkyl group, an alkoxy group, a cyano group, a carbonyl group (preferably an alkyloxycarbonyl group or an aryloxycarbonyl group), an acylamino group or an aromatic group.
R ³⁴ and R ³⁵ may be bonded to each other to form a ring.

Regarding the definition and preferred range of each substituent in general formula (iii), unless otherwise specified, the descriptions regarding R ¹ and R ² in general formula (1) described in JP-A-2013-129712 can be applied directly to R ³¹ and R ³² , respectively, and the descriptions regarding R ⁴ , R ⁵ and R ⁷ in general formula (3) described in JP-A-2013-129712 can be applied directly to R ³⁴ , R ³⁵ and R ³⁷ , respectively.
In the present invention, R ³⁷ may be the following acylamino group in addition to the hydrogen atom, alkyl group, alkoxy group, cyano group, carbonyl group, and aromatic group that R ⁷ in the general formula (3) described in JP-A-2013-129712 can be.
The acylamino group that can be taken as R ³⁷ preferably has 1 to 12 carbon atoms, and more preferably 1 to 6 carbon atoms.
In the present invention, the alkyl group which can be taken as R ³¹ , R ³² and R ³⁷ preferably has 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 6 carbon atoms.
The alkoxy group which can be represented by R ³¹ , R ³² and R ³⁷ preferably has 1 to 20 carbon atoms, more preferably 1 to 12 carbon atoms, and particularly preferably 1 to 6 carbon atoms.
The alkyloxycarbonyl group which can be represented by R ³¹ , R ³² and R ³⁷ preferably has 2 to 30 carbon atoms, more preferably 2 to 20 carbon atoms, even more preferably 2 to 12 carbon atoms, and particularly preferably 2 to 7 carbon atoms.
The alkyl group that can be taken as R ³⁴ and R ³⁵ preferably has 1 to 30 carbon atoms, more preferably 1 to 20 carbon atoms, and even more preferably 1 to 12 carbon atoms.

R ³¹ is preferably an alkyl group or an aryl group, more preferably an alkyl group.
R ³² is preferably an alkyl group or a cyano group, more preferably a cyano group.
R ³⁴ and R ³⁵ are preferably a hydrogen atom or an alkyl group, more preferably an alkyl group.
R ³⁷ is preferably a hydrogen atom, an alkyl group, an acylamino group or an aromatic group, more preferably a hydrogen atom or an alkyl group, and even more preferably an alkyl group.

Specific examples of dyes represented by general formula (iii) include the specific examples of azo dyes represented by general formula (iii) described in paragraphs [0056] to [0058] of WO 2023/234353. However, the present invention is not limited to these examples.

(1-4) An azo dye represented by the following general formula (iv):

In the above formula, R ⁴¹ to R ⁴⁴ , R ⁴⁶ and R ⁴⁷ each represent a hydrogen atom, a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, —OR ²⁰⁸ , —SR ²⁰⁹ , —NR ²¹⁰ R ²¹¹ , —S(═O) ₂ NR ²¹² R ²¹³ , —C(═O)NR ²¹⁴ R ²¹⁵ , —NHC(═O)R ²¹⁶ , —C(═O)OR ²¹⁷ , —O(CH ₂ CH ₂ O) _n R ²¹⁸ , —O(CH ₂ CH ₂ S) _n R ²¹⁹ , —S(CH ₂ CH ₂ O) _n R ²²⁰ , —S(CH ₂ CH ₂ S) _n R ²²¹ , acyclic hydrocarbon groups, monocyclic hydrocarbon groups, condensed polycyclic hydrocarbon groups, or heterocyclic groups.
R ²⁰⁸ to R ²²¹ each represent a hydrogen atom, an acyclic hydrocarbon group, a monocyclic hydrocarbon group, a condensed polycyclic hydrocarbon group, or a heterocyclic group, and n is a positive integer.
The acyclic hydrocarbon group, the monocyclic hydrocarbon group, the condensed polycyclic hydrocarbon group and the heterocyclic group include a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, -OR ²⁰⁸ , -SR ²⁰⁹ , -NR ²¹⁰ R ²¹¹ , -S(═O) ₂ NR ²¹² R ²¹³ , -C(═O)NR ²¹⁴ R ²¹⁵ , -NHC(═O)R ²¹⁶ , -C(═O)OR ²¹⁷ , -O(CH ₂ CH ₂ O) _n R ²¹⁸ , -O(CH ₂ CH ₂ S) _n R ²¹⁹ , -S(CH ₂ CH ₂ O) _n R ²²⁰ and -S(CH ₂ CH ₂ S) _n R ²²¹ as a substituent.

Unless otherwise specified, the descriptions of R ²¹ to R ²⁴ , R ²⁶ , R ²⁷ , R ¹⁰⁸ to R ¹²¹ and n in the general formula (ii) above can be applied as they are to R ⁴¹ to R ⁴⁴ , R ⁴⁶ , R ⁴⁷ , R ²⁰⁸ to R ²²¹ and n in the general formula (iv), respectively.
R ⁴³ is preferably a hydrogen atom, —OR ²⁰⁸ , —SR ²⁰⁹ , —NR ²¹⁰ R ²¹¹ , —NHC(═O)R ²¹⁶ , —O(CH ₂ CH ₂ O) _n R ²¹⁸ , —O(CH ₂ CH ₂ S) _n R ²¹⁹ , —S(CH ₂ CH ₂ O) _n R ²²⁰ , —S(CH ₂ CH ₂ S) _n R ²²¹ or an acyclic hydrocarbon group (preferably an acyclic alkyl group), more preferably a hydrogen atom, —OR ²⁰⁸ , —SR ²⁰⁹ , —NR ²¹⁰ R ²¹¹ , —NHC(═O)R ²¹⁶ or an acyclic alkyl group, and even more preferably —NHC(═O)R ²¹⁶ or an acyclic alkyl group. Here, R ²⁰⁸ to R ²¹¹ , R ²¹⁶ and R ²¹⁸ to R ²²¹ are preferably acyclic alkyl groups.
In —NR ²¹⁰ R ²¹¹ located at the ortho position relative to R ⁴⁴ and R ⁴⁶ , R ²¹⁰ is preferably an acyclic alkyl group, and R ²¹¹ is preferably an acyclic alkyl group, more preferably an unsubstituted acyclic alkyl group (including an acyclic alkyl group substituted with an acyclic alkyl group), or an acyclic alkyl group having —OR ²⁰⁸ , a monocyclic hydrocarbon group or a fused polycyclic hydrocarbon group as a substituent. Here, R ²⁰⁸ is preferably a hydrogen atom or an acyclic alkyl group.
In general formula (iv), R ⁴⁴ and/or R ⁴⁶ may be bonded to R ²¹⁰ and/or R ²¹¹ in -NR ²¹⁰ R ²¹¹ located at the ortho position relative to R ⁴⁴ and R ⁴⁶ on the benzene ring to form a ring. The ring that may be formed is preferably a 5- or 6-membered ring, and may be saturated or unsaturated, with a saturated 6-membered ring being preferred. The ring that may be formed may further have a substituent, and preferably has, for example, an alkyl group.
In particular, the ring is preferably formed by bonding R ⁴⁶ to R ²¹¹ in —NR ²¹⁰ R ²¹¹ located at the ortho position relative to R ⁴⁴ and R ⁴⁶ on the benzene ring to form a saturated 6-membered ring.

Specific examples of the dye represented by general formula (iv) include the compounds used in the examples described below, as well as the compounds described in paragraph [0053] of JP-A-2013-129712. However, the present invention is not limited to these.

(1-5) An indoaniline dye represented by the following general formula (v):

In the above formula, Q ¹ represents a group of atoms necessary to form a 5- to 7-membered nitrogen-containing heterocycle together with the carbon atom to which it is attached, including at least one nitrogen atom.
R ⁵¹ represents an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an aminocarbonyl group or a sulfonyl group, R ⁵² represents a hydrogen atom or an alkyl group, R ⁵³ to R ⁵⁷ represent a hydrogen atom, an alkyl group, an alkoxy group, an acylamino group, an alkylsulfonylamino group or a halogen atom, and R ⁵⁸ and R ⁵⁹ represent a hydrogen atom, an alkyl group or an aryl group.
^R51 and ^R53 , ^R54 and ^R55 and/or ^R55 and ^R59 , or ^R58 and ^R59 may be bonded to each other to form a ring. That is, ^R51 and ^R53 may be bonded to each other to form a ring, ^R54 and ^R55 and/or ^R55 and ^R59 may be bonded to each other to form a ring, or ^R58 and ^R59 may be bonded to each other to form a ring.

With regard to the definition and preferred range of each substituent in general formula (v), unless otherwise specified, the descriptions of R ¹ to R ⁶ , R ⁸ , R ⁹ and Q ¹ in general formula (I) described in JP-A-2-92686 can be directly applied to R ⁵¹ to R ⁵⁶ , R ⁵⁸ , R ⁵⁹ and Q ¹ , respectively.
In the present invention, R ⁵³ to R ⁵⁶ can be the following acylamino group and alkylsulfonylamino group in addition to the hydrogen atom, alkyl group, alkoxy group and halogen atom that R ³ to R ⁶ in general formula (I) described in JP-A-2-92686 can be.
The acylamino group represented by R ⁵³ to R ⁵⁷ preferably has 1 to 12 carbon atoms, and more preferably 1 to 6 carbon atoms.
The alkylsulfonylamino group represented by R ⁵³ to R ⁵⁷ preferably has 1 to 12 carbon atoms, and more preferably has 1 to 6 carbon atoms.
With regard to the alkyl group, alkoxy group and halogen atom that can be taken as R ⁵⁷ , the descriptions of the alkyl group, alkoxy group and halogen atom that can be taken as R ⁵³ to R ⁵⁶ can be applied as they are.

Q ¹ is preferably represented by -NR ¹⁶ C(=O)-Q ² -. Q ² represents a group of atoms necessary to form a 5- to 7-membered nitrogen-containing heterocycle together with the carbon atom to which -NR ¹⁶ C(=O)-Q ² - is bonded and -NR ¹⁶ C(=O)-, and examples thereof include a divalent amino group, an ether bond, a thioether bond, an alkylene bond, an ethylene bond, an imino bond, a sulfonyl bond, a carbonyl bond, an arylene bond, or a divalent heterocyclic group, or a group combining two or more of these. R ^{16 represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group, and a hydrogen atom is preferred. With regard to the definition and preferred range of each substituent of R 16 ,} the descriptions regarding R ¹⁶ in relation to general formula (I) described in JP-A-2-92686 can be applied as is.
R ⁵¹ is preferably an acyl group having 2 to 7 carbon atoms or an alkoxycarbonyl group having 2 to 7 carbon atoms.
R ⁵² is preferably a hydrogen atom, and R ⁵³ to R ⁵⁶ are preferably hydrogen atoms.
R ⁵⁷ is preferably an alkoxy group, an acylamino group or an alkylsulfonylamino group, more preferably an alkoxy group or an acylamino group.
R ⁵⁸ and R ⁵⁹ are preferably alkyl groups having 1 to 6 carbon atoms.

Among these, the indoaniline dye represented by the above general formula (v) is preferably represented by the following general formula (va):

In the above formula, R ⁵¹ , R ⁵³ , R ⁵⁷ to R ⁵⁹ and Q ² have the same meanings as R ⁵¹ , R ⁵³ , R ⁵⁷ to R ⁵⁹ and Q ² in the above general formula (v).
Q ² is preferably —CR ¹¹ R ¹² CR ¹³ R ¹⁴ —, —CR ¹¹ R ¹² — or —NR ¹¹ —, and more preferably —CR ¹¹ R ¹² CR ¹³ R ¹⁴ —.
R ¹¹ to R ¹⁴ each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and it is preferred that R ¹¹ and R ¹² are hydrogen atoms and R ¹³ and R ¹⁴ are alkyl groups having 1 to 4 carbon atoms.
It is preferable that —CR ¹¹ R ¹² CR ¹³ R ¹⁴ — is bonded to >C═O on the side of the carbon atom to which R ¹¹ and R ¹² are bonded.

Specific examples of dyes represented by general formula (v) include the compounds used in the examples described below, as well as compounds No. 1 to 51 listed on pages 5 and 6 of JP-A No. 2-92686. However, the present invention is not limited to these.

The total content of the dyes in the light-absorbing and dissipative layer is preferably 0.10 to 50% by mass, more preferably 0.15 to 40% by mass, even more preferably 0.20 to 30% by mass, particularly preferably 0.25 to 15% by mass, and especially preferably 0.30 to 15% by mass.

The content of the azo dye represented by general formula (i) in the light-absorbing and dissipating layer is preferably 0.01 to 30% by mass, and more preferably 0.1 to 10% by mass. Similarly to the content of the azo dye represented by general formula (i), the content of the azo dye represented by general formula (ii), the azo dye represented by general formula (iii), the azo dye represented by general formula (iv), and the indoaniline dye represented by general formula (v) in the light-absorbing and dissipating layer is preferably 0.01 to 30% by mass, and more preferably 0.1 to 10% by mass. In addition, all of the dyes in the light-absorbing and dissipating layer may be composed of at least one of the azo dyes represented by any of general formulas (i) to (iv) and the indoaniline dye represented by general formula (v).

<Compounds that generate radicals upon exposure to ultraviolet light>
The light-absorbing and dissipative layer contains a compound that generates radicals upon irradiation with ultraviolet light (also simply referred to as a "radical generator" in the present invention).
The radical generator is not particularly limited as long as it is a compound that generates radicals when irradiated with ultraviolet light and has the function of decolorizing the dye. For example, a photoradical generator that may be used in combination with compound B described below can be used as the radical generator.

The radical generator may be a combination of two or more compounds, and the two or more compounds may form a complex or other interaction in the light-absorbing/disappearing layer to generate radicals upon ultraviolet irradiation. The types of compounds to be combined may be two or more compounds that exhibit different functions in the mechanism of generating radicals upon ultraviolet irradiation, and two types are preferred. A preferred example of such a combination is a combination of a compound A having an acid group and a compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A.
When the light-absorbing and dissipating layer contains compound A having an acid group and compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A, the efficiency of generating radical species upon ultraviolet irradiation is improved compared to when the above-mentioned photoradical generator is used. Therefore, even when ultraviolet irradiation is performed under mild temperature conditions such as room temperature, sufficient radical species are generated, and these radical species react directly or indirectly with the dye, causing the dye to decompose and fade or disappear. In particular, the azo dye represented by any of the above general formulas (i) to (iv), the indoaniline dye represented by the above general formula (v), and the squaraine dye represented by the below-mentioned general formula (1), which can be contained in the light-absorbing and dissipating layer, are discolored with almost no secondary absorption associated with dye decomposition.
Compound A having an acid group and compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A will be described in detail below.

(1) Compound A having an acid group
The light-absorbing and disappearing layer preferably contains, as the radical generator, a compound A having an acid group (also simply referred to as "compound A" in the present invention), together with a compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A, which will be described later.
The acid group contained in compound A is preferably a proton dissociative group having a pKa of 12 or less. Specific examples of the acid group include a carboxy group, a sulfonamide group, a phosphonic acid group (-P(=O)(OH) ₂ ), a phosphate group (-OP(=O)(OH) ₂ ), a sulfo group, a phenolic hydroxyl group, and a sulfonylimide group, with a carboxy group being preferred. Note that pKa means the negative common logarithm (-log Ka) of the acid dissociation constant (Ka) in water at 25°C, and can be calculated in the same manner as in the pKa of compound B described below, except that the 50/50 (volume ratio) mixed solvent of water/methanol is changed to water.
Compound A may be a low molecular weight compound or a high molecular weight compound (hereinafter also referred to as a "polymer"), and is preferably a polymer.
The compound A being a polymer means that the compound A is chemically bonded to a polymer that constitutes the resin contained in the light-absorbing and dissipating layer.
When compound A is a low molecular weight compound, the molecular weight of compound A is less than 5,000, preferably 2,000 or less, more preferably 1,000 or less, even more preferably 500 or less, and particularly preferably 400 or less. There is no particular restriction on the lower limit, but a practical value is 100 or more, and preferably 200 or more. That is, a practical value is 100 or more and less than 5,000, and a range of 200 to 2,000 is preferred, more preferably 200 to 1,000, even more preferably 200 to 500, and particularly preferably 200 to 400.
When compound A is a polymer, the lower limit of the weight-average molecular weight of compound A is 5,000 or more, and from the viewpoint of the physical properties of the light transmission/absorption filter I, it is preferably 10,000 or more, and more preferably 15,000 or more. The upper limit is not particularly limited, but from the viewpoint of solubility in solvents, it is preferably 500,000 or less, more preferably 200,000 or less, and even more preferably 150,000 or less. That is, a range of 5,000 to 500,000 is practical, with 10,000 to 200,000 being preferred, and 15,000 to 150,000 being more preferred.

Furthermore, some or all of the acid groups contained in Compound A may or may not be anionized in the light-absorbing and dissipative layers that constitute Laminate I and Laminate pre-III, and in the present invention, both anionized and non-anionized acid groups are referred to as acid groups. In other words, Compound A may or may not be anionized in Laminate I and Laminate pre-III.

Compound A is preferably a compound having a carboxy group, in view of excellent film-forming properties of the light-absorbing and disappearing layer.
The compound having a carboxy group is preferably a monomer containing a carboxy group (hereinafter also referred to as a "carboxy group-containing monomer") or a polymer containing a carboxy group (hereinafter also referred to as a "carboxy group-containing polymer"), and from the viewpoint of film-forming properties of the light-absorbing and disappearing layer, it is more preferably a carboxy group-containing polymer.

Some or all of the carboxy groups (—COOH) possessed by the carboxy group-containing monomer and the carboxy group-containing polymer may or may not be anionized in the laminate I and the laminate pre-III, and the term “carboxy group” includes both anionized carboxy groups (—COO ⁻ ) and non-anionized carboxy groups.
In other words, the carboxyl group-containing polymer in the light-absorbing and dissipative layer constituting the laminate I and laminate pre-III may be anionized or not, and both anionized and not anionized carboxyl group-containing polymers are referred to as the carboxyl group-containing polymer.

The content of compound A in the light-absorbing and disappearing layer is preferably 1% by mass or more, more preferably 25% by mass or more, even more preferably 30% by mass or more, particularly preferably 45% by mass or more, and especially preferably 50% by mass or more. The upper limit of the content of compound A is preferably less than 100% by mass, more preferably 99% by mass or less, and even more preferably 97% by mass or less. That is, the content is preferably 1% by mass or more but less than 100% by mass, more preferably 25 to 99% by mass, more preferably 30 to 97% by mass, particularly preferably 45 to 97% by mass, and especially preferably 50 to 97% by mass.
In particular, when compound A is a polymer, the content of compound A in the light-absorbing and dissipating layer is preferably 50% by mass or more and less than 100% by mass, more preferably 60% by mass or more and less than 100% by mass, and even more preferably 70% by mass or more and less than 100% by mass. The upper limit is also preferably 99% by mass or less, more preferably 97% by mass or less, even more preferably 95% by mass or less, and particularly preferably 90% by mass or less.
The compound A may be used alone or in combination of two or more kinds.

(Carboxy group-containing monomer)
The carboxy group-containing monomer may be a polymerizable compound that contains a carboxy group and one or more (for example, 1 to 15) ethylenically unsaturated groups.
Examples of the ethylenically unsaturated group include a (meth)acryloyl group, a vinyl group, and a styryl group, with a (meth)acryloyl group being preferred.
When the ethylenically unsaturated group is a (meth)acryloyl group, the carbonyl bond in the (meth)acryloyl group and the carbonyl bond in the carboxy group may share one carbonyl bond.
From the viewpoint of superior film-forming properties, the carboxyl group-containing monomer is preferably a difunctional or higher functional monomer containing a carboxyl group. Note that the difunctional or higher functional monomer refers to a polymerizable compound having two or more (e.g., 2 to 15) ethylenically unsaturated groups in one molecule.
The number of carboxy groups contained in the carboxy group-containing monomer may be one or more, and for example, 1 to 8 is preferred, 1 to 4 is more preferred, and 1 or 2 is even more preferred.
The carboxyl group-containing monomer may further have an acid group other than a carboxyl group, such as a phenolic hydroxyl group, a phosphoric acid group, or a sulfonic acid group.

The di- or higher functional monomer containing a carboxy group is not particularly limited and can be appropriately selected from known compounds.
Examples of bifunctional or higher functional monomers containing a carboxy group include trade names such as Aronix M-520 and Aronix M-510 (both manufactured by Toagosei Co., Ltd.).

Furthermore, examples of difunctional or higher functional monomers containing a carboxy group include trifunctional or tetrafunctional polymerizable compounds containing a carboxy group (compounds in which a carboxy group has been introduced into a pentaerythritol triacrylate or pentaerythritol tetraacrylate [PETA] skeleton (acid value = 80 to 120 mg KOH/g)), and pentafunctional or hexafunctional polymerizable compounds containing a carboxy group (compounds in which a carboxy group has been introduced into a dipentaerythritol pentaacrylate or dipentaerythritol hexaacrylate [DPHA] skeleton (acid value = 25 to 70 mg KOH/g)). When using the above-mentioned trifunctional or higher functional monomers containing a carboxy group, it is also preferable to use them in combination with difunctional or higher functional monomers containing a carboxy group, from the perspective of achieving better film-forming properties.

Examples of difunctional or higher functional monomers containing a carboxy group and difunctional or higher functional monomers containing an acid group include the polymerizable compounds having an acid group described in paragraphs 0025 to 0030 of JP 2004-239942 A. The contents of this publication are incorporated herein by reference.

(Carboxy group-containing polymer)
The carboxyl group-containing polymer may further have an acid group other than a carboxyl group, such as a phenolic hydroxyl group, a phosphoric acid group, or a sulfonic acid group.
When the carboxy group-containing polymer is a copolymer, the structure of the polymer may be a random polymer or a regular polymer such as a block polymer.

<Structural Unit Having a Carboxy Group>
The carboxy group-containing polymer preferably has a structural unit having a carboxy group.
Examples of structural units having a carboxy group include structural units derived from (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid, or fumaric acid. Among these, structural units derived from (meth)acrylic acid are preferred because of their excellent decolorization properties.

The content of the structural unit having a carboxy group in the carboxy group-containing polymer is preferably 1 to 100 mol%, more preferably 3 to 65 mol%, still more preferably 5 to 60 mol%, particularly preferably 10 to 60 mol%, and of these, 20 to 55 mol% is preferred, when the total of all structural units of the carboxy group-containing polymer is taken as 100 mol%.
The structural unit having a carboxy group may be used alone or in combination of two or more types.

<Structural units having aromatic rings>
In addition to the above-mentioned structural units, the carboxyl group-containing polymer preferably also contains a structural unit having an aromatic ring (preferably an aromatic hydrocarbon ring), such as a structural unit derived from a (meth)acrylate having an aromatic ring (specifically, benzyl (meth)acrylate, phenethyl (meth)acrylate, or phenoxyethyl (meth)acrylate).

The content of the structural unit having an aromatic ring in the carboxy group-containing polymer is preferably 0 to 97 mol %, more preferably 0 to 95 mol %, and even more preferably 0 to 90 mol %, when the total of all structural units of the carboxy group-containing polymer is 100 mol %.
The aromatic ring-containing structural unit may be used alone or in combination of two or more types.

<Structural Unit Having Alicyclic Structure>
In addition to the above-mentioned structural units, the carboxyl group-containing polymer also preferably has a structural unit having an alicyclic structure.
Examples of alicyclic structures include a tricyclo[5.2.1.0 ^2,6 ]decane ring structure (also called tetrahydrodicyclopentadiene; the monovalent group is dicyclopentanyl), a tricyclo[5.2.1.0 ^2,6 ]decane-3-ene ring structure (also called 5,6-dihydrodicyclopentadiene; the monovalent group is dicyclopentenyl), an isobornane ring structure (the monovalent group is isobornyl), an adamantane ring structure (the monovalent group is adamantyl), and a cyclohexane ring structure (the monovalent group is cyclohexyl).
Examples of structural units having an alicyclic structure include structural units derived from (meth)acrylates having an alicyclic structure (specifically, dicyclopentanyl (meth)acrylate, dicyclopentenyl (meth)acrylate, isobornyl (meth)acrylate, adamantyl (meth)acrylate, methyl adamantyl (meth)acrylate, cyclohexyl (meth)acrylate, etc.).

The content of the structural unit having an alicyclic structure in the carboxy group-containing polymer is preferably 0 to 97 mol %, more preferably 0 to 95 mol %, and even more preferably 0 to 90 mol %, when the total of all structural units in the carboxy group-containing polymer is 100 mol %.
The structural unit having an alicyclic structure may be used alone or in combination of two or more types.

Other structural units
The carboxyl group-containing polymer may have other structural units in addition to the structural units described above.
Examples of the other structural units include structural units derived from methyl (meth)acrylate.
The content of other structural units in the carboxy group-containing polymer is preferably 0 to 70 mol %, more preferably 0 to 50 mol %, and even more preferably 0 to 20 mol %, when the total of all structural units of the carboxy group-containing polymer is 100 mol %.
The other structural units may be used alone or in combination of two or more.

(2) Compound B
The light-absorbing and disappearing layer preferably contains, as the radical generator, together with the compound A, a compound B (also simply referred to as "compound B" in the present invention) having a structure capable of forming a hydrogen bond with an acid group contained in the compound A.
Compound B is preferably a compound having a structure that increases its basicity by absorbing ultraviolet light and becoming excited. The increased basicity of compound B in the excited state allows the acid group contained in compound A to form a complex with compound B through stronger interaction, thereby increasing the efficiency of radical generation.
The structure of compound B that can form a hydrogen bond with the acid group contained in compound A may be the entire structure of compound B or a partial structure that constitutes a part of compound B.
Compound B may be a high molecular weight compound (meaning a compound having a molecular weight of 5000 or more) or a low molecular weight compound (meaning a compound having a molecular weight of less than 5000), and is preferably a low molecular weight compound.
The molecular weight of compound B, which is a low molecular weight compound, is less than 5,000, preferably less than 1,000, more preferably 500 or less, and even more preferably 350 or less. There is no particular restriction on the lower limit, but it is preferably 65 or more, and more preferably 75 or more. A preferred range for the molecular weight of compound B, which is a low molecular weight compound, is, for example, 65 or more and less than 5,000, preferably 65 or more and less than 1,000, more preferably 65 to 500, and even more preferably 75 to 350.

Compound B is preferably an aromatic compound because it has a large molar absorption coefficient for ultraviolet light.
Here, the aromatic compound is a compound having one or more aromatic rings.
Only one or more aromatic rings may be present in compound B. When more than one aromatic ring is present, the aromatic ring may be present, for example, in a side chain of a polymer constituting the resin.
The aromatic ring may be either an aromatic hydrocarbon ring or an aromatic hetero ring. When the aromatic hetero ring (also referred to as a heteroaromatic ring) is used, it is a compound having one or more (e.g., 1 to 4) heteroatoms (at least one of nitrogen atom, oxygen atom, sulfur atom, etc.) as ring member atoms (ring-constituting atoms), and preferably has one or more (e.g., 1 to 4) nitrogen atoms as ring member atoms.
Note that unsubstituted aromatic hydrocarbons do not have a structure capable of forming a hydrogen bond with the acid group contained in compound A, and therefore do not have the function of generating radicals upon ultraviolet irradiation, and do not fall under compound B. Furthermore, unsubstituted aromatic hydrocarbon rings in a form in which an unsubstituted aromatic hydrocarbon ring is bonded to a side chain of a polymer constituting a resin do not have a structure capable of forming a hydrogen bond with the acid group contained in compound A, and therefore do not have the function of generating radicals upon ultraviolet irradiation, and do not fall under compound B.
The aromatic ring preferably has 5 to 15 ring atoms.

Examples of the aromatic ring include monocyclic aromatic rings such as pyridine ring, pyrazine ring, pyrimidine ring, and triazine ring; aromatic rings formed by condensing two rings such as quinoline ring, isoquinoline ring, quinoxaline ring, and quinazoline ring; and aromatic rings formed by condensing three rings such as acridine ring, phenanthridine ring, phenanthroline ring, and phenazine ring.

The aromatic ring may have one or more (for example, 1 to 5) substituents, and examples of the substituents include an alkyl group, an aryl group, a halogen atom, an acyl group, an alkoxycarbonyl group, an arylcarbonyl group, a carbamoyl group, a hydroxy group, a cyano group, and a nitro group. When the aromatic ring has two or more substituents, the multiple substituents may be bonded to each other to form a non-aromatic ring.
In addition, when a series of aromatic ring structures is formed by a plurality of aromatic rings (for example, 2 to 5 aromatic rings) being bonded via a structure selected from a single bond, a carbonyl bond, and a multiple bond (for example, a vinylene group which may have a substituent, -C≡C-, -N=N-, etc.), the series of aromatic ring structures as a whole is regarded as one specific structure.
The series of aromatic ring structures in which the above-mentioned multiple aromatic rings are bonded via a structure selected from a single bond, a carbonyl bond, and a multiple bond does not fall under the above-mentioned unsubstituted aromatic hydrocarbon ring, nor does it fall under the unsubstituted aromatic hydrocarbon ring in a form in which an unsubstituted aromatic hydrocarbon ring is bonded to a side chain of a polymer constituting the resin.
It is also preferred that one or more of the aromatic rings constituting the series of aromatic ring structures be the heteroaromatic ring.

Specific examples of compound B include monocyclic aromatic compounds such as pyridine compounds (pyridine and pyridine derivatives), pyrazine compounds (pyrazine and pyrazine derivatives), pyrimidine compounds (pyrimidine and pyrimidine derivatives), and triazine compounds (triazine and triazine derivatives); compounds in which two rings are fused to form an aromatic ring, such as quinoline compounds (quinoline and quinoline derivatives), isoquinoline compounds (isoquinoline and isoquinoline derivatives), quinoxaline compounds (quinoxaline and quinoxaline derivatives), and quinazoline compounds (quinazoline and quinazoline derivatives); and compounds in which three or more rings are fused to form an aromatic ring, such as acridine compounds (acridine and acridine derivatives), phenanthridine compounds (phenanthridine and phenanthridine derivatives), phenanthroline compounds (phenanthroline and phenanthroline derivatives), and phenazine compounds (phenazine and phenazine derivatives). In these specific examples of compound B, the term "compound" is used to mean not only the compound itself, but also a compound having a substituent (referred to as a "derivative"), including an unsubstituted compound whose structure is partially modified within a range that does not impair the effects of the present invention.
It is presumed that these compounds B form complexes with the aforementioned compound A, and when irradiated with ultraviolet light, generate two radical molecules through the following mechanism.
1) Compound B is generated in an excited state by absorbing ultraviolet light.
2) A hole moves from compound B in the excited state to compound A in the ground state (an electron from compound A moves to the lower energy orbital of the two half-occupied orbitals of compound B in the excited state).
3) A proton is transferred from compound A to compound B, generating a radical in which a hydrogen radical is added to compound B and a radical in which a hydrogen radical is released from compound A.
When compound A is a compound having a carboxy group, the following reaction further occurs, and a radical is generated by a photodecarboxylation reaction.
4) Carbon dioxide is released from the radical resulting from the release of a hydrogen radical from compound A.

Among these, compound B is preferably at least one of quinoline compounds (quinoline and quinoline derivatives) and isoquinoline compounds (isoquinoline and isoquinoline derivatives).
The substituents which these compounds may have are preferably an alkyl group, an aryl group, a halogen atom, an acyl group, an alkoxycarbonyl group, an arylcarbonyl group, a carbamoyl group, a hydroxy group, a cyano group, or a nitro group.

When compound B is a polymer, it may be a polymer in which the specific structure is bonded to the polymer main chain via a single bond or a linking group.
Compound B, which is a polymer, can be obtained, for example, by polymerizing a monomer having a heteroaromatic ring (specifically, a heteroaromatic ring having a vinyl group and/or a (meth)acrylate monomer having a heteroaromatic ring). If necessary, it may be copolymerized with other monomers.

Specific examples of compound B include quinoline, 2-methylquinoline, 4-methylquinoline, 2,4-dimethylquinoline, 2-methyl-4-phenylquinoline, isoquinoline, 1-methylisoquinoline, 3-methylisoquinoline, and 1-phenylisoquinoline.

From the viewpoint of achieving both the decolorization property in the ultraviolet irradiated portion and the durability of the dye in the ultraviolet non-irradiated portion, the content of Compound B is preferably from 0.1 to 50 mass %, more preferably from 2.0 to 40 mass %, still more preferably from 4 to 35 mass %, and particularly preferably from 8 to 30 mass %, relative to the total mass of the light-absorbing and disappearing layer.
Similarly, from the viewpoint of achieving both the decolorization property of the ultraviolet irradiated portion and the durability of the dye in the ultraviolet non-irradiated portion, the pKaH (pKa of the conjugate acid) which is a measure of the basicity of compound B is preferably 2.0 to 7.0, more preferably 3.0 to 6.0, and still more preferably 4.3 to 5.5.
In the present invention, pKa means the negative common logarithm (−logKa) of the acid dissociation constant (Ka) in a mixed solvent of water/methanol = 50/50 (volume ratio) at 25° C. The pKa can be calculated by adding 0.01 mol/L of aqueous sodium hydroxide solution dropwise to a mixed solution of water/methanol = 50/50 (volume ratio) of a measurement sample (conjugate acid of compound B) and reading the amount of aqueous sodium hydroxide added dropwise up to the half-equivalent point.
The compound B may be used alone or in combination of two or more.

<Resin>
The resin contained in the light-absorbing and disappearing layer is not particularly limited as long as it can disperse (preferably dissolve) the dye, can exhibit the dye decolorizing action by radicals generated from a compound that generates radicals upon ultraviolet irradiation (preferably a radical generator containing compound B hydrogen-bonded with an acid group contained in compound A), and has the desired light transmittance (a light transmittance of 80% or more is preferred in the visible region of wavelengths of 400 to 800 nm).

As the polymer constituting the resin, various polymers can be used, and from the viewpoint of preventing the molecular weight of the resin from decreasing due to ultraviolet irradiation, a polymer having an aromatic ring or an alicyclic structure in the side chain is preferred, and a chain polymerization polymer such as a (meth)acrylic polymer containing a structural unit having an aromatic ring or an alicyclic structure is more preferred. Among them, from the viewpoint of further improving the decolorization rate and further improving the heat resistance and light resistance, a (meth)acrylic polymer containing a structural unit having an alicyclic structure is even more preferred.
Here, the (meth)acrylic polymer refers to a polymer containing at least one of a structural unit derived from (meth)acrylic acid and a structural unit derived from a (meth)acrylic acid ester. When the polymer contains a structural unit derived from (meth)acrylic acid, the structural unit derived from (meth)acrylic acid becomes a structural unit having a carboxy group as the acid group in the above-mentioned compound A, and corresponds to the above-mentioned polymer in which the above-mentioned compound A is chemically bonded to the polymer constituting the resin.
In the present invention, the term "main chain" refers to the relatively longest bond chain in the molecule of a polymer compound, and the term "side chain" refers to an atomic group branching off from the main chain.

Monomers that derive structural units having an aromatic ring include (meth)acrylates having an aromatic ring, such as benzyl acrylate, benzyl methacrylate, naphthyl acrylate, naphthyl methacrylate, naphthyl methyl acrylate, and naphthyl methyl methacrylate. When the polymer does not contain structural units derived from (meth)acrylic acid, the content of structural units having an aromatic ring is preferably 5 to 100% by mass, more preferably 10 to 100% by mass, and even more preferably 20 to 100% by mass, relative to the total mass of the polymer.

Examples of monomers that lead to structural units having an alicyclic structure include dicyclopentanyl (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, and adamantyl (meth)acrylate.
When the polymer contains a structural unit having an alicyclic structure, the content of the structural unit having an alicyclic structure is preferably 1 to 90 mass%, more preferably 5 to 90 mass%, and even more preferably 5 to 80 mass%, relative to the total mass of the polymer.

Furthermore, in the light-absorbing and disappearing layer, the polymer constituting the resin may contain a structural unit bonded to a compound A having an acid group. The structural unit bonded to a compound A having an acid group can be the same as the structural unit having a carboxy group in the compound A described above, and a structural unit derived from (meth)acrylic acid is preferred. The content of the structural unit bonded to a compound A having an acid group (preferably a structural unit derived from (meth)acrylic acid) is preferably 1 to 70% by mass, more preferably 1 to 60% by mass, relative to the total mass of the polymer. More preferably, the content of the structural unit having a carboxy group in the carboxy group-containing polymer in the compound A described above is applied.
When the polymer constituting the resin contains a structural unit bonded to a compound A having an acid group, the contents of structural units having an aromatic ring and structural units having an alicyclic structure in the carboxy group-containing polymer of compound A described above apply to the contents of structural units bonded to a compound A having an acid group, the content of structural units having an aromatic ring and the content of structural units having an alicyclic structure.

The polymer constituting the resin may contain a structural unit having an alkyl group having 1 to 14 carbon atoms, from the perspective of adjusting the glass transition temperature, etc. Examples of structural units having an alkyl group having 1 to 14 carbon atoms include structural units derived from alkyl (meth)acrylates such as methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, t-butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, isononyl (meth)acrylate, lauryl (meth)acrylate, and tetradecyl (meth)acrylate. In the present invention, structural units having an alkyl group having 1 to 14 carbon atoms may be used alone, or two or more types may be used in combination. The content of structural units having an alkyl group having 1 to 14 carbon atoms is preferably 0 to 95% by mass relative to the total mass of the polymers that make up the resin.

The weight-average molecular weight (Mw) of the polymer that constitutes the resin is preferably 10,000 or more, more preferably 10,000 to 200,000, and even more preferably 15,000 to 150,000.

Next, we will explain in detail the wavelength-selective absorption layers that make up Laminate I and Laminate II.

<<Wavelength-selective absorption layer>>
The wavelength-selective absorption layers constituting the laminates I and II contain a resin and a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and do not contain a compound that generates radicals upon ultraviolet irradiation. The dye preferably does not have a main absorption wavelength band at any of the wavelengths of 460 nm, 530 nm, and 620 nm, and more preferably does not have a main absorption wavelength band at any of the wavelength ranges of 450 to 470 nm, more than 520 nm but not more than 540 nm, or more than 610 nm but not more than 630 nm.
In the wavelength selective absorption layer, the "dye" is dispersed (preferably dissolved) in the resin, thereby making the wavelength selective absorption layer a layer exhibiting a specific absorption spectrum derived from the dye.

<Dye>
The "dye" contained in the wavelength selective absorption layer preferably includes at least one of the following dyes A to D, each of which has a main absorption wavelength band in a different wavelength region.
Dye A: a dye having a main absorption wavelength band in a wavelength range of 390 to 435 nm Dye B: a dye having a main absorption wavelength band in a wavelength range of 480 to 520 nm Dye C: a dye having a main absorption wavelength band in a wavelength range of 560 to 610 nm Dye D: a dye having a main absorption wavelength band in a wavelength range of 640 to 780 nm The dye A that can be contained in the wavelength selective absorption layer may be one type or two or more types. As with dye A, the dyes B to D that can be contained in the wavelength selective absorption layer may each independently be one type or two or more types.
The wavelength selective absorption layer may contain dyes other than the dyes A to D.

The wavelength-selective absorption layer may take any form so long as the dye in the wavelength-selective absorption layer exhibits an absorption spectrum, and in combination with the light-absorbing and dissipative layer described above, the resulting light-transmitting and absorbing filters I and II are able to simultaneously suppress external light reflection and brightness reduction, and preferably are also not likely to affect the original color of the displayed image. One form of the wavelength-selective absorption layer is one in which a dye (preferably at least one of dyes A to D) is dispersed (preferably dissolved) in a resin. This dispersion may be random, regular, or otherwise.

In the wavelength-selective absorption layer, the dyes A to D have their main absorption wavelength bands in the wavelength ranges of 390 to 435 nm, 480 to 520 nm, 560 to 610 nm, and 640 to 780 nm, respectively, which do not overlap with the wavelength ranges of B (Blue, 460 nm), G (Green, 530 nm), and R (Red, 620 nm) used as light sources in OLED display devices. Therefore, by containing at least one of these dyes A to D, the wavelength-selective absorption layer can suppress reflection of external light in the light-emitting section of the display device without compromising the color reproduction range of light emitted from the OLED display element.

In particular, from the viewpoint of providing a wavelength selective absorption layer that exhibits an absorption spectrum that has a negative correlation with the emission spectrum of the light source and bringing out the original color of an image of an OLED display device, the dyes A, B, C, and Dye D that can be contained in the wavelength selective absorption layer are preferably a combination of at least two types, more preferably a combination of at least three types, and even more preferably a combination of all four types.
When two or more types of dyes A to D are contained in the wavelength-selective absorption layer as described above, a problem of reduced lightfastness due to mixing of the dyes may occur due to chain transfer of radicals generated during dye decomposition, etc. To address this problem, the wavelength-selective absorption layer in the laminate I and laminate II, as well as the light-transmission-absorption filter I obtained by mask-exposing the laminate I, and the light-transmission-absorption filter II including the laminate II and laminate III, can exhibit an excellent level of lightfastness that overcomes the reduced lightfastness that accompanies mixing of the dyes by providing a specific gas barrier layer as described below or by having multiple dyes separated into two wavelength-selective absorption layers.

In particular, from the viewpoint of further bringing out the original color of an image of an OLED display device, it is preferable that the wavelength-selective-absorption layer contains all of the four dyes A to D and satisfies the following relational formulas (I) to (VI): Light-transmission-absorption filter I obtained from laminate I having a wavelength-selective-absorption layer with such a configuration and the above-mentioned light-absorbing-disappearing layer, and light-transmission-absorption filter II obtained from laminate II and laminate III including a wavelength-selective-absorption layer with such a configuration, can not only satisfactorily suppress external light reflection and brightness reduction, but also maintain the original color of an image of an OLED display device at an excellent level.
Relationship (I): Ab(450)/Ab(430)<1.0
Relational formula (II): Ab(450)/Ab(500)<1.0
Relational formula (III): Ab(540)/Ab(500)<1.0
Relationship (IV): Ab(540)/Ab(600)<1.0
Relational formula (V) Ab(630)/Ab(600)≦0.5
Relationship (VI): Ab(630)/Ab(700)<1.0

Among the ranges defined by the above relational expressions (I) to (VI), the preferred ranges are as follows:
The upper limit of Ab(450)/Ab(430) in the relational formula (I) is preferably 0.90 or less, more preferably 0.85 or less, even more preferably 0.80 or less, and particularly preferably 0.60 or less. There is no particular restriction on the lower limit, but a practical value is 0.05 or more, preferably 0.10 or more, and more preferably 0.20 or more.
The upper limit of Ab(450)/Ab(500) in the relational formula (II) is preferably 0.90 or less, more preferably 0.80 or less, even more preferably 0.75 or less, particularly preferably 0.65 or less, and among these, 0.60 or less is preferable, and 0.50 or less is most preferable. There is no particular restriction on the lower limit, but a practical value is 0.05 or more, preferably 0.10 or more, and more preferably 0.20 or more.
The upper limit of Ab(540)/Ab(500) in the relational formula (III) is preferably 0.90 or less, more preferably 0.80 or less, even more preferably 0.75 or less, particularly preferably 0.70 or less, and among these, 0.50 or less is preferable, and 0.20 or less is most preferable. There is no particular restriction on the lower limit, but a practical value is 0.01 or more, preferably 0.02 or more, and more preferably 0.05 or more.
The upper limit of Ab(540)/Ab(600) in the relational formula (IV) is preferably 0.90 or less, more preferably 0.85 or less, even more preferably 0.80 or less, particularly preferably 0.70 or less, and among these, 0.50 or less is preferable, and 0.25 or less is most preferable. There is no particular restriction on the lower limit, but a practical value is 0.01 or more, preferably 0.02 or more, and more preferably 0.05 or more.
The upper limit of Ab(630)/Ab(600) in the relational formula (V) is preferably 0.40 or less, more preferably 0.30 or less, even more preferably 0.20 or less, and particularly preferably 0.15 or less. There is no particular restriction on the lower limit, but a practical value is 0.01 or more, preferably 0.02 or more, and more preferably 0.05 or more.
The upper limit of Ab(630)/Ab(700) in the relational formula (VI) is preferably 0.95 or less, more preferably 0.90 or less, even more preferably 0.80 or less, and particularly preferably 0.75 or less. There is no particular restriction on the lower limit, but a practical value is 0.01 or more, preferably 0.03 or more, more preferably 0.10 or more, even more preferably 0.40 or more, and particularly preferably 0.50 or more.

When the relational expressions (I) to (VI) each satisfy the above-mentioned preferred ranges, the change in color caused by the provision of the light-transmitting-absorbing filters I and II can be reduced, and the original color of the image of the OLED display device can be further enhanced. For this reason, it is preferable that the dyes A to D have a sharp absorption waveform in the main absorption wavelength band.
For example, when dye B is a squaraine dye represented by general formula (1) described below, the wavelength selective absorption layer can satisfy the above-mentioned preferred ranges for relational formulas (II) and (III), and can maintain the original color of the image of the OLED display device at a superior level. This is thought to be due to the low absorbance at wavelengths around the absorption maximum (534 nm) of the green visual pigment in human cones.
Furthermore, when dye C is a squaraine dye represented by general formula (1) described below, the wavelength selective absorption layer can satisfy the above-mentioned preferable ranges of relational formulas (I) to (IV), and can maintain the original color of the image of the OLED display device at a superior level. This is also thought to be due to the low absorbance at wavelengths around the absorption maximum (534 nm) of the green visual pigment in human cones, as described above.
In particular, satisfying the relational expression (V) is important in that it does not affect the original color of the image of the OLED display device. It is believed that the change in a ^* can be suppressed by satisfying the relational expression (V), and as a result, the above-mentioned color can be maintained at an excellent level.

The wavelength-selective absorption layer of Laminate I and Laminate II may be a single layer, or may be a two-layer structure from the viewpoint of suppressing a decrease in light resistance due to the mixing of the above-mentioned dyes. When the wavelength-selective absorption layer has a two-layer structure consisting of a first wavelength-selective absorption layer and a second wavelength-selective absorption layer, it is preferable that the dye contained in the first wavelength-selective absorption layer has a main absorption wavelength band in a wavelength range different from that of the dye contained in the second wavelength-selective absorption layer. Note that, "the dye contained in the first wavelength-selective absorption layer has a main absorption wavelength band in a wavelength range different from that of the dye contained in the second wavelength-selective absorption layer" means that the maximum absorption maximum wavelength of the dye contained in the first wavelength-selective absorption layer and the maximum absorption maximum wavelength of the dye contained in the second wavelength-selective absorption layer are separated by 50 nm or more.
In particular, when the laminate I and the laminate II are used by being arranged in a display device such that the first-wavelength-selective-absorption layer side faces the external light side (the viewer side) and the second-wavelength-selective-absorption layer side faces the display device, it is preferable that the first-wavelength-selective-absorption layer contains a dye having a main absorption wavelength band on the shortest wavelength side (hereinafter referred to as "shortest-wavelength dye") among the dyes contained in the first-wavelength-selective-absorption layer and the second-wavelength-selective-absorption layer. When the first-wavelength-selective-absorption layer located on the external light side contains the shortest-wavelength dye, photodecomposition of dyes other than the shortest-wavelength dye due to photoexcitation of the shortest-wavelength dye can be more effectively suppressed, and excellent lightfastness can be exhibited.

A combination of the dye contained in the first wavelength selective absorption layer and the dye contained in the second wavelength selective absorption layer is preferably one that can both suppress a decrease in brightness and suppress the influence of reflected color when the light transmission and absorption filter of the present invention is applied to a display device.
The first wavelength selective absorption layer and the second wavelength selective absorption layer preferably contain at least one dye having a main absorption wavelength band in a different wavelength region. The first wavelength selective absorption layer may contain two or more dyes having different main absorption wavelength bands, and the second wavelength selective absorption layer may contain two or more dyes having different main absorption wavelength bands. Note that even when at least one of the first wavelength selective absorption layer and the second wavelength selective absorption layer contains two or more dyes having different main absorption wavelength bands, it is preferable that the dye contained in the first wavelength selective absorption layer and the dye contained in the second wavelength selective absorption layer have main absorption wavelength bands in different wavelength regions.
The first wavelength selective absorption layer containing two or more dyes having different main absorption wavelength bands means that the maximum absorption maximum wavelengths of the two or more dyes contained in the first wavelength selective absorption layer are different from each other by 50 nm or more.
Furthermore, the second wavelength selective absorption layer containing two or more dyes having different main absorption wavelength bands means that the maximum absorption maximum wavelengths of the two or more dyes contained in the second wavelength selective absorption layer are different from each other by 50 nm or more.
Of these, the shortest wavelength dye is preferably contained in the first wavelength selective absorption layer as described above, and the shortest wavelength dye is preferably dye A described above.

The above-mentioned descriptions relating to "dye" can be applied to the "dye" contained in the first wavelength selective absorption layer and the second wavelength selective absorption layer, and it is preferable that the "dye" contains at least one of the dyes A to D. The dyes A to D that can be contained in two or more wavelength selective absorption layers may each independently be one type or two or more types.
In particular, it is preferable that the dye contained in the first wavelength selective absorption layer and the dye contained in the second wavelength selective absorption layer are combined to form a configuration containing all of the dyes A to D. For example, a preferred example of such a configuration is a configuration in which the first wavelength selective absorption layer contains the dyes A and C, and the second wavelength selective absorption layer contains the dyes B and D.
Furthermore, with regard to the above-mentioned relational expressions (I) to (VI), it is preferable that the first wavelength selective absorption layer and the second wavelength selective absorption layer do not satisfy all of the above-mentioned relational expressions (I) to (VI) individually, and that the wavelength selective absorption layer as a whole including the first wavelength selective absorption layer and the second wavelength selective absorption layer satisfies all of the above-mentioned relational expressions (I) to (VI).

(Dye A)
There are no particular limitations on the dye A, so long as it has a main absorption wavelength band in the wavelength range of 390 to 435 nm in the laminate I and laminate II, and various dyes can be used.
The wavelength range in which dye A has its main absorption wavelength band is preferably 395 to 435 nm, more preferably 400 to 435 nm, and even more preferably 405 to 435 nm.
Specific examples of dye A include porphyrin-based, squaraine-based, cyanine (CY)-based, pyrrolmethine-based, and indoaniline-based pigments (dyes).

As the dye A, a dye represented by the following general formula (A1) is preferred because it has a sharp absorption waveform in the main absorption wavelength band.

In formula (A1), ^R1 and ^R2 each independently represent an alkyl group or an aryl group, ^R3 to ^R6 each independently represent a hydrogen atom or a substituent, and ^R5 and ^R6 may be bonded to each other to form a 6-membered ring.

Unless otherwise specified, the definitions and preferred ranges of each substituent in general formula (A1) can be directly applied to the descriptions of each substituent in the dye represented by general formula (A1) in paragraphs [0022] to [0056] of WO 2022/138925.

From the viewpoint of heat resistance and light resistance, it is also preferable that R ¹ and R ² in formula (A1) are both aryl groups.
When ^R1 and ^R2 each independently represent an aryl group, it is preferable that ^R3 , ^R5 , and ^R6 each independently represent a hydrogen atom, an alkyl group, or an aryl group, and at least one of ^R3 and ^R6 is a hydrogen atom. Among these, from the viewpoint of heat resistance and light fastness, it is more preferable that ^R3 represents a hydrogen atom, and ^R5 and ^R6 each independently represent an alkyl group or an aryl group, even more preferable that ^R3 represents a hydrogen atom, and ^R5 and ^R6 each independently represent an alkyl group, and it is particularly preferable that ^R3 represents a hydrogen atom, ^R5 and ^R6 each independently represent an alkyl group, and ^R5 and ^R6 are bonded to each other to form a ring that is condensed with a pyrrole ring and forms an indole ring together with the pyrrole ring. That is, it is particularly preferable that the dye represented by the above general formula (A1) is a dye represented by the following general formula (A2):

In formula (A2), R ¹ to R ⁴ have the same meanings as R ¹ to R ⁴ in general formula (A1), respectively, and the preferred embodiments are also the same.

In formula (A2), R ¹⁵ represents a substituent. Examples of the substituent that can be adopted as R ¹⁵ include the substituents included in the substituent group A in the description of the dye represented by general formula (A1) described in the above-mentioned WO 2022/138925. ^{R 15} is preferably an alkyl group, an aryl group, a halogen atom, an acyl group, or an alkoxycarbonyl group.
The alkyl group and aryl group which can be taken as R ¹⁵ have the same meanings as the alkyl group and aryl group which can be taken as R ³ , R ⁵ and R ⁶ , respectively, and the preferred embodiments are also the same.
Examples of halogen atoms that can be taken as R ¹⁵ include a chlorine atom, a bromine atom, and an iodine atom.
Examples of acyl groups that can be taken as R ¹⁵ include an acetyl group, a propionyl group, and a butyroyl group.
The amino group that can be taken as R ¹⁵ can be the same as the amino group that can be possessed by the substituted aryl group in R ^4. Also preferred is a 5- to 7-membered nitrogen-containing heterocyclic group in which the alkyl group on the nitrogen atom of the amino group is bonded to form a ring.
The alkoxycarbonyl group that can be taken as R ¹⁵ is preferably an alkoxycarbonyl group having 2 to 5 carbon atoms, and examples thereof include methoxycarbonyl, ethoxycarbonyl, normal propoxycarbonyl, and isopropoxycarbonyl.

n is an integer from 0 to 4. There are no particular restrictions on n, but it is preferably 0 or 1, for example.

Specific examples of dyes represented by general formula (A1) include the compounds described in paragraphs [0063] to [0065] of WO 2022/138925 and the following compound (E-42). However, the present invention is not limited to these.

Furthermore, dyes represented by the following general formula (B) are also preferred as dyes A. The compounds and specific examples represented by general formula (1), (3), or (6) described in paragraphs [0016] to [0097] of WO 2023/100715 can be applied as they are to dyes represented by the following general formula (B). Dye A-321, used in the examples described below, is also preferred as dye A.

In the above formula (B), ^Q1 represents a group represented by the following formula (Q-1).
^Q2 represents =O, =S, =NR ^q1 or =CR ^q2 R ^q3 , R ^q1 to R ^q3 represent a hydrogen atom or a substituent, and R ^q2 and R ^q3 may be bonded to each other to form a ring, provided that when R ^q2 and R ^q3 are bonded to form a ring, =CR ^q2 R ^q3 does not have the same structure as ^Q1 .
R ¹ and R ² each represent a hydrogen atom or a substituent.
X ¹ to X ⁴ each independently represent —S—, —NR ^X1 — or —SO ₂ —, where R ^X1 represents a hydrogen atom or an alkyl group.

In the above formula (Q-1), * represents a bond, and R ¹⁰¹ and R ¹⁰² represent a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, a heterocyclic group, or a group containing a polymerizable group having an ethylenically unsaturated bond.
provided that when either R ¹⁰¹ or R ¹⁰² is a hydrogen atom, the other is an alkyl group, an aralkyl group, an aryl group, a heterocyclic group, or a group containing a polymerizable group having an ethylenically unsaturated bond;
When one of R ¹⁰¹ and R ¹⁰² is a methyl group, the other represents a hydrogen atom, an alkyl group having 2 or more carbon atoms, an aralkyl group, an aryl group, a heterocyclic group, or a group containing a polymerizable group having an ethylenically unsaturated bond,
When either R ¹⁰¹ or R ¹⁰² is a phenyl group, the other represents a hydrogen atom, an alkyl group, an aralkyl group, a substituted aryl group, a heterocyclic group, or a group containing a polymerizable group having an ethylenically unsaturated bond.

With regard to the definition and preferred range of each substituent in the general formula (B), unless otherwise specified, the descriptions regarding each substituent of the compound represented by the general formula (1) described in WO 2023/100715 can be applied as they are.
In particular, in the present invention, the dye represented by the above general formula (B) is preferably a dye having a combination of the following substituents.
R ¹⁰¹ and R ¹⁰² are preferably an alkyl group or an aralkyl group, and more preferably an alkyl group having 2 or more carbon atoms.
^Q2 is =CR ^q2 R ^q3 , and R ^q2 and R ^q3 are preferably bonded to each other to form a cyclopropane ring, a cyclobutane ring, a cyclopentane ring, or a cyclohexane ring, more preferably a cyclobutane ring. The ring formed by bonding R ^q2 and R ^q3 to each other is preferably substituted with one or two =O groups, and may further be fused with a substituted benzene ring, which is preferable.
R ¹ and R ² are preferably —OC(═O)—Y ¹¹ , —O—Y ¹¹ or —OC(═O)NR ^y11 , and more preferably —OC(═O)—Y ^11. Y ¹¹ is preferably an alkyl group, and more preferably a branched alkyl group. R ^y11 is preferably a hydrogen atom or an alkyl group, and more preferably an alkyl group.
X ¹ to X ⁴ are preferably —S—.

Furthermore, preferred examples of the dye A include porphyrin dyes represented by the following general formula (7), which contain copper, magnesium, zinc, cobalt, titanium, iron, vanadium, or vanadium oxide as a central metal.

In the above formula, X ¹ to X ⁸ represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a substituted or unsubstituted ethenyl group, a substituted or unsubstituted ethynyl group, an aryl group, an aryloxy group, an aryloxycarbonyl group, an alkylthio group, an arylthio group, or an acyl group.
Adjacent groups among X ¹ to X ⁸ may be bonded to each other to form an aromatic ring together with the carbon atoms that substitute for them.
R ¹⁸ to R ²¹ each represent an aryl group.
M represents copper, magnesium, zinc, cobalt, titanium, iron, vanadium, or vanadium oxide.
In the above formula, the nitrogen atoms located above and below M on the paper indicate that they are coordinated to M via an unshared electron pair.

With regard to the halogen atom, alkyl group, alkoxy group, aryl group, aryloxy group, aryloxycarbonyl group, alkylthio group, arylthio group and acyl group which can be taken as X ^{1 to} X ⁸ , the descriptions of the halogen atom, alkyl group, alkoxy group (described as a form in ^which the aliphatic group in an aliphatic oxy group is an alkyl group), aryl group, aryloxy group, aryloxycarbonyl group, alkylthio group (described as a form in which the aliphatic group in an aliphatic thio group is an alkyl group), arylthio group and acyl group in the substituents which can be taken as R 17 and R 18 in the above-mentioned general formula (i) can be applied.
The alkyl groups that can be taken as X ¹ to X ⁸ may have a substituent, and examples of the alkyl group substituted with a substituent include an aralkyl group, a halogenoalkyl group, an alkoxyalkyl group, an aryloxyalkyl group, an aralkyloxyalkyl group, and a halogenoalkoxyalkyl group. With regard to the substituents in the alkyl groups substituted with these substituents (aryl group, halogen atom, alkoxy group, aryloxy group, aralkyloxy group, halogenoalkoxy group), the descriptions of the corresponding substituents in the substituents that can be taken as R ¹⁷ and R ¹⁸ in the above general formula (i) or the substituents formed by combining multiple corresponding substituents in the substituents that can be taken as R ¹⁷ and R ¹⁸ in the above general formula (i) can also be applied.
The alkoxy groups that can be taken as X ¹ to X ⁸ may have a substituent, and examples of the alkoxy group substituted with a substituent include an aralkyloxy group and a halogenoalkoxy group. The same descriptions of the corresponding substituents in the substituents that can be taken as R ¹⁷ and R ¹⁸ in the general formula (i) above can also be applied to the substituents (aryl group, halogen atom) in the alkoxy group substituted with these substituents.
As the substituents which the substituted ethenyl group and substituted ethynyl group which can be taken as X ¹ to X ⁸ can have, the substituents which can be taken as R ¹ to R ⁶ in the above-mentioned general formula (P) can be applied.
The aryl groups that can be taken as R ¹⁸ to R ²¹ can be the same as those described above for the aryl groups in the substituents that can be taken as R ¹⁷ and R ¹⁸ in the general formula (i).

Among these, X ¹ to X ⁸ are preferably a hydrogen atom, a halogen atom, a linear alkyl group having 1 to 10 carbon atoms, a branched alkyl group having 3 to 10 carbon atoms, or a cyclic alkyl group having 3 to 10 carbon atoms.

Furthermore, commercially available porphyrin dyes represented by general formula (7) can be used without any restrictions. For example, porphyrin compounds that satisfy the main absorption wavelength band of dye A, sold by Tokyo Chemical Industry Co., Ltd., Yamada Chemical Co., Ltd., etc., can be used. For example, FDB-002 (trade name, manufactured by Yamada Chemical Co., Ltd.) used in the examples described below corresponds to a porphyrin dye represented by general formula (7).

As dye A, in addition to the dye represented by the above general formula (A1), the porphyrin dye represented by the above general formula (7), and the dye represented by the above general formula (B), the compounds described in paragraphs 0012 to 0067 of JP-A No. 5-53241 and the compounds described in paragraphs 0011 to 0076 of Japanese Patent No. 2707371 can also be preferably used.

(Dye B, Dye C)
There are no particular limitations on the dye B, so long as it has a main absorption wavelength band in the wavelength range of 480 to 520 nm in the laminate I and laminate II, and various dyes can be used.
Furthermore, dye C is not particularly limited as long as it has a main absorption wavelength band in the wavelength range of 560 to 610 nm in the laminate I and laminate II, and various dyes can be used.
The wavelength range in which dye B has its main absorption wavelength band is preferably 485 to 520 nm, more preferably 490 to 520 nm, and even more preferably 490 to 515 nm.
The wavelength range in which dye C has its main absorption wavelength band is preferably 580 to 615 nm, more preferably 580 to 610 nm, and even more preferably 580 to 610 nm.

Specific examples of dye B include pyrrole methine (PM)-based, rhodamine (RH)-based, boron dipyrromethene (BODIPY)-based, and squaraine (SQ)-based pigments (dyes).
Specific examples of dye C include tetraazaporphyrin (TAP)-based, squaraine-based, and cyanine (CY)-based pigments (dyes).

Among these, squaraine dyes are preferred as dye B and dye C because they have sharp absorption waveforms in the main absorption wavelength band, and squaraine dyes represented by the following general formula (1) are more preferred. By using dyes with sharp absorption waveforms as dye B and dye C, the above-mentioned relational expressions (I) and (II) can be satisfied at a preferred level, and the original color of the image of the OLED display device can be maintained at an excellent level.
That is, from the viewpoint of suppressing the color change, it is preferable that at least one of dye B and dye C in the wavelength selective absorption layer is a squaraine dye (preferably, a squaraine dye represented by the following general formula (1)), and it is more preferable that both dye B and dye C are squaraine dyes (preferably, squaraine dyes represented by the following general formula (1)).

In general formula (1), A and B each independently represent an aryl group which may have a substituent, a heterocyclic group which may have a substituent, or -CH=G. G represents a heterocyclic group which may have a substituent.

Unless otherwise specified, the definitions and preferred ranges of each substituent in general formula (1) can be directly applied to the descriptions of each substituent in the dye represented by general formula (1) in paragraphs [0073] to [0095], [0099], and [0100] of WO 2021/221122.

A preferred embodiment of the dye represented by the above general formula (1) is a dye represented by the following general formula (2):

In the general formula (2), A ¹ is the same as A in the general formula (1). Among them, a nitrogen-containing five-membered heterocyclic group is preferred.

In general formula (2), ^R1 and ^R2 each independently represent a hydrogen atom or a substituent. ^R1 and ^R2 may be the same or different, and may be bonded to each other to form a ring.
The substituents that can be taken as ^R1 and ^R2 are not particularly limited, and examples thereof include alkyl groups (methyl, ethyl, propyl, isopropyl, butyl, t-butyl, isobutyl, pentyl, hexyl, octyl, dodecyl, trifluoromethyl, etc.), cycloalkyl groups (cyclopentyl, cyclohexyl, etc.), alkenyl groups (vinyl, allyl, etc.), alkynyl groups (ethynyl, propargyl, etc.), aryl groups (phenyl, naphthyl, etc.), heteroaryl groups (furyl, thienyl, pyridyl, pyridyl, etc.), a pyridyl group, a pyrimidyl group, a pyrazyl group, a triazyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, a benzimidazolyl group, a benzoxazolyl group, a quinazolyl group, a phthalazyl group, etc.), a heterocyclic group (also called a heterocyclic group, for example, a pyrrolidyl group, an imidazolidyl group, a morpholyl group, an oxazolidyl group, etc.), an alkoxy group (a methoxy group, an ethoxy group, a propyloxy group, etc.), a cycloalkoxy group (a cyclopentyloxy group, a cyclohexyloxy group, etc.), an aryloxy group (a phenoxy group, a naphthyloxy group, etc.), a heteroaryl group arylthio groups (aromatic heterocyclic oxy groups), alkylthio groups (methylthio, ethylthio, propylthio, etc.), cycloalkylthio groups (cyclopentylthio, cyclohexylthio, etc.), arylthio groups (phenylthio, naphthylthio, etc.), heteroarylthio groups (aromatic heterocyclic thio groups), alkoxycarbonyl groups (methyloxycarbonyl, ethyloxycarbonyl, butyloxycarbonyl, octyloxycarbonyl, etc.), aryloxycarbonyl groups (phenyloxycarbonyl, naphthylthio, etc.), a hydroxycarbonyl group, etc.), a phosphoryl group (dimethoxyphosphonyl, diphenylphosphoryl), a sulfamoyl group (aminosulfonyl group, methylaminosulfonyl group, dimethylaminosulfonyl group, butylaminosulfonyl group, cyclohexylaminosulfonyl group, octylaminosulfonyl group, phenylaminosulfonyl group, 2-pyridylaminosulfonyl group, etc.), an acyl group (acetyl group, ethylcarbonyl group, propylcarbonyl group, cyclohexylcarbonyl group, octylcarbonyl group, 2-ethylhexylcarbonyl group, phenylcarbonyl group, naphthylcarbonyl group, pyridylcarbonyl group, etc.), acyloxy group (acetyloxy group, ethylcarbonyloxy group, butylcarbonyloxy group, octylcarbonyloxy group, phenylcarbonyloxy group, etc.), amido group (methylcarbonylamino group, ethylcarbonylamino group, dimethylcarbonylamino group, propylcarbonylamino group, pentylcarbonylamino group, cyclohexylcarbonylamino group, 2-ethylhexylcarbonylamino group, octylcarbonylamino group, dodecyl carbonylamino group, phenylcarbonylamino group, naphthylcarbonylamino group, etc.), sulfonylamide group (methylsulfonylamino group, octylsulfonylamino group, 2-ethylhexylsulfonylamino group, trifluoromethylsulfonylamino group, etc.), carbamoyl group (aminocarbonyl group, methylaminocarbonyl group, dimethylaminocarbonyl group, propylaminocarbonyl group, pentylaminocarbonyl group, cyclohexylaminocarbonyl group, octylaminocarbonyl group, 2-ethylhexylaminocarbonyl group, an aminocarbonyl group, a dodecylaminocarbonyl group, a phenylaminocarbonyl group, a naphthylaminocarbonyl group, a 2-pyridylaminocarbonyl group, etc.), an ureido group (a methylureido group, an ethylureido group, a pentylureido group, a cyclohexylureido group, an octylureido group, a dodecylureido group, a phenylureido group, a naphthylureido group, a 2-pyridylaminoureido group, etc.), an alkylsulfonyl group (a methylsulfonyl group, an ethylsulfonyl group, a butylsulfonyl group, a cyclohexylsulfonyl group, a 2-ethylhexylsulfonyl ... group, etc.), arylsulfonyl groups (phenylsulfonyl group, naphthylsulfonyl group, 2-pyridylsulfonyl group, etc.), amino groups (amino group, ethylamino group, dimethylamino group, butylamino group, dibutylamino group, cyclopentylamino group, 2-ethylhexylamino group, dodecylamino group, anilino group, naphthylamino group, 2-pyridylamino group, etc.), alkylsulfonyloxy groups (methanesulfonyloxy), cyano group, nitro group, halogen atoms (fluorine atom, chlorine atom, bromine atom, etc.), hydroxy group, etc.
Among these, an alkyl group, an alkenyl group, an aryl group, or a heteroaryl group is preferred, an alkyl group, an aryl group, or a heteroaryl group is more preferred, and an alkyl group is even more preferred.

The substituents that can be taken as R ¹ and R ² may further have a substituent. Examples of the substituents that may further have include the above-mentioned substituents that can be taken as R ¹ and R ² , and the substituent X that A, B, and G in the above-mentioned general formula (1) may have (the substituent X described in paragraphs [0079] to [0095] of WO 2021/221122). In addition, R ¹ and R ² may be bonded to each other to form a ring, and R ¹ or R ² and the substituents that B ² or B ³ have may be bonded to form a ring.
The ring formed in this case is preferably a heterocycle or heteroaryl ring, and the size of the ring formed is not particularly limited, but is preferably a 5-membered or 6-membered ring. The number of rings formed is also not particularly limited, and may be one or two or more. Examples of the form in which two or more rings are formed include a form in which the substituents carried by ^R1 and ^B2 , and the substituents carried by ^R2 and ^B3, are bonded to each other to form two rings.

In general formula (2), B ¹ , B ² , B ³ and B ⁴ each independently represent a carbon atom or a nitrogen atom. A ring including ^{B 1} , B ² , B ³ and B ⁴ is an aromatic ring. It is preferred that at least two of ^{B 1} to B ⁴ are carbon atoms, and it is more preferred that all of B ¹ to B ⁴ are carbon atoms.
The carbon atoms which can be taken as B ¹ to B ⁴ have a hydrogen atom or a substituent. Of the carbon atoms which can be taken as B ¹ to B ⁴ , the number of carbon atoms which have a substituent is not particularly limited, but is preferably 0, 1 or 2, and more preferably 1. In particular, it is preferable that B ¹ and B ⁴ are carbon atoms and at least one of them has a substituent.
The substituents that the carbon atoms that can be taken as B ¹ to B ⁴ have are not particularly limited, and examples include the above-mentioned substituents that can be taken as R ¹ and R ^2. Among these, preferred are alkyl groups, alkoxy groups, alkoxycarbonyl groups, aryl groups, acyl groups, amido groups, sulfonylamido groups, carbamoyl groups, alkylsulfonyl groups, arylsulfonyl groups, amino groups, cyano groups, nitro groups, halogen atoms, and hydroxy groups, and more preferred are alkyl groups, alkoxy groups, alkoxycarbonyl groups, aryl groups, acyl groups, amido groups, sulfonylamido groups, carbamoyl groups, amino groups, cyano groups, nitro groups, halogen atoms, and hydroxy groups.
The substituents possessed by the carbon atoms that can be taken as B ¹ to B ⁴ may further have a substituent. Examples of the substituents that may further be possessed include the substituents that may be further possessed by R ¹ and R ² in the general formula (2) described above, and the substituent X that may be possessed by A, B, and G in the general formula (1) described above (the substituent X described in paragraphs [0079] to [0095] of WO 2021/221122).

The substituents that can be taken by the carbon atoms represented by ^B1 and ^B4 are more preferably an alkyl group, an alkoxy group, a hydroxy group, an amide group, a sulfonylamido group, or a carbamoyl group, particularly preferably an alkyl group, an alkoxy group, a hydroxy group, an amide group, or a sulfonylamido group, and most preferably a hydroxy group, an amide group, or a sulfonylamido group.
The substituents that the carbon atoms that can be taken as ^B2 and ^B3 have are more preferably an alkyl group, an alkoxy group, an alkoxycarbonyl group, an acyl group, an amino group, a cyano group, a nitro group, or a halogen atom, and it is particularly preferred that either one of the substituents is an electron-withdrawing group (for example, an alkoxycarbonyl group, an acyl group, a cyano group, a nitro group, or a halogen atom).

The dye represented by the above general formula (2) is preferably a dye represented by any of the following general formulas (3), (4), and (5):

In formula (3), R ¹ and R ² each independently represent a hydrogen atom or a substituent, and have the same meanings as R ¹ and R ² in formula (2) above, and the preferred ranges are also the same.
In formula (3), B ¹ to B ⁴ each independently represent a carbon atom or a nitrogen atom, and have the same meaning as B ¹ to B ⁴ in formula (2) above, and the preferred ranges are also the same.

In general formula (3), ^R3 and ^R4 each independently represent a hydrogen atom or a substituent. The substituents that can be taken as ^R3 and ^R4 are not particularly limited, and examples thereof include the same substituents that can be taken as the above-mentioned ^R1 and ^R2 .
However, the substituent that can be taken as ^R3 is preferably an alkyl group, an alkoxy group, an amino group, an amido group, a sulfonylamido group, a cyano group, a nitro group, an aryl group, a heteroaryl group, a heterocyclic group, an alkoxycarbonyl group, a carbamoyl group, or a halogen atom, more preferably an alkyl group, an aryl group, or an amino group, and still more preferably an alkyl group.
The substituent that can be taken as ^R4 is preferably an alkyl group, an aryl group, a heteroaryl group, a heterocyclic group, an alkoxy group, an alkoxycarbonyl group, an acyl group, an acyloxy group, an amido group, a carbamoyl group, an amino group, or a cyano group, more preferably an alkyl group, an alkoxycarbonyl group, an acyl group, a carbamoyl group, or an aryl group, and still more preferably an alkyl group.

The alkyl group that can be taken as ^R3 and ^R4 may be linear, branched, or cyclic, but is preferably linear or branched. The number of carbon atoms in the alkyl group is preferably 1 to 12, and more preferably 1 to 8. Preferred examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a t-butyl group, a 2-ethylhexyl group, and a cyclohexyl group, and more preferably a methyl group or a t-butyl group.

In formula (4), R ¹ and R ² each independently represent a hydrogen atom or a substituent, and have the same meanings as R ¹ and R ² in formula (2) above, and the preferred ranges are also the same.
In formula (4), B ¹ to B ⁴ each independently represent a carbon atom or a nitrogen atom, and have the same meaning as B ¹ to B ⁴ in formula (2) above, and the preferred ranges are also the same.

In general formula (4), ^R5 and ^R6 each independently represent a hydrogen atom or a substituent. The substituents that can be taken as ^R5 and ^R6 are not particularly limited, and examples thereof include the same substituents that can be taken as the above-mentioned ^R1 and ^R2 .
However, the substituent that can be taken as ^R5 is preferably an alkyl group, an alkoxy group, an aryloxy group, an amino group, a cyano group, an aryl group, a heteroaryl group, a heterocyclic group, an acyl group, an acyloxy group, an amido group, a sulfonylamido group, a ureido group, or a carbamoyl group, more preferably an alkyl group, an alkoxy group, an acyl group, an amido group, or an amino group, and still more preferably an alkyl group.
The alkyl group that can be taken as ^R5 has the same meaning as the alkyl group that can be taken as ^R3 in general formula (3), and the preferred range is also the same.

In general formula (4), the substituent that can be taken as ^R6 is preferably an alkyl group, an alkenyl group, an aryl group, a heteroaryl group, a heterocyclic group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkoxycarbonyl group, an acyl group, an acyloxy group, an amido group, a sulfonylamido group, an alkylsulfonyl group, an arylsulfonyl group, a carbamoyl group, an amino group, a cyano group, a nitro group, or a halogen atom, more preferably an alkyl group, an aryl group, a heteroaryl group, or a heterocyclic group, and still more preferably an alkyl group or an aryl group.
The alkyl group that can be taken as ^R6 has the same meaning as the alkyl group that can be taken as ^R4 in general formula (3), and the preferred range is also the same.
The aryl group that can be taken as ^R6 is preferably an aryl group having 6 to 12 carbon atoms, and more preferably a phenyl group. This aryl group may have a substituent, and examples of such a substituent include groups included in the following substituent group B, with alkyl groups having 1 to 10 carbon atoms, sulfonyl groups, amino groups, acylamino groups, sulfonylamino groups, and the like being particularly preferred. These substituents may further have a substituent. Specifically, the substituent is preferably an alkylsulfonylamino group.

- Substituent group B -
Examples of such groups include a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxy group, a nitro group, a carboxy group, an alkoxy group, an aminooxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, a sulfonylamino group (including an alkyl or arylsulfonylamino group), a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkyl or arylsulfinyl group, a sulfonyl group (including an alkyl or arylsulfonyl group), an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, and a silyl group.

In formula (5), R ¹ and R ² each independently represent a hydrogen atom or a substituent, and have the same meanings as R ¹ and R ² in formula (2) above, and the preferred ranges are also the same.
In formula (5), B ¹ to B ⁴ each independently represent a carbon atom or a nitrogen atom, and have the same meaning as B ¹ to B ⁴ in formula (2) above, and the preferred ranges are also the same.

In general formula (5), ^R7 and ^R8 each independently represent a hydrogen atom or a substituent. The substituents that can be taken as ^R7 and ^R8 are not particularly limited, and examples thereof include the same substituents that can be taken as the above-mentioned ^R1 and ^R2 .
However, the preferred range, more preferred range, and even more preferred range of the substituent that can be taken as ^R7 are the same as the substituent that can be taken as ^R5 in general formula (4). The alkyl group that can be taken as ^R5 has the same definition as the alkyl group that can be taken as the above-mentioned ^R3 , and the preferred range is also the same.

In general formula (5), the preferred range, more preferred range, and even more preferred range of the substituent that can be taken as ^R8 are the same as the substituent that can be taken as ^R6 in general formula (4). The preferred range of the alkyl group and aryl group that can be taken as ^R8 are the same as the alkyl group and aryl group that can be taken as ^R6 in general formula (4) above, and the preferred ranges are also the same.

The squaraine dye can be any squaraine dye represented by any of the general formulas (1) to (5) and is not particularly limited. Examples include the compounds described in JP-A-2006-160618, WO-2004/005981, WO-2004/007447, Dyes and Pigment, 2001, 49, pp. 161-179, WO-2008/090757, WO-2005/121098, and JP-A-2008-275726.

Specific examples of the dyes represented by any of the general formulas (1) to (5) include the compounds described in paragraphs [0119] to [0122] of WO 2021/221122. However, the present invention is not limited to these.
In addition to the above specific examples, specific examples of the dyes represented by any of the general formulas (3) to (5) include the compounds described in paragraphs [0124] to [0132] of WO 2021/221122. However, the present invention is not limited to these.

A preferred embodiment of the dye represented by the above general formula (1) is a dye represented by the following general formula (6):

In the general formula (6), ^R3 and ^R4 each independently represent a hydrogen atom or a substituent, and have the same meanings and preferred values as ^R3 and ^R4 in the general formula (3) above.
In the general formula (6), ^A2 is the same as A in the general formula (1). Among them, a nitrogen-containing five-membered heterocyclic group is preferred.

The dye represented by the above general formula (6) is preferably a dye represented by any of the following general formulas (7), (8), and (9):

In general formula (7), ^R3 and ^R4 each independently represent a hydrogen atom or a substituent, and have the same meanings and preferred ranges as ^R3 and ^R4 in general formula (3). Two ^R3s and two ^R4s may be the same or different.

In formula (8), ^R3 and ^R4 each independently represent a hydrogen atom or a substituent, and have the same meaning as ^R3 in formula (3) above, and the preferred range is also the same.
In formula (8), ^R5 and ^R6 each independently represent a hydrogen atom or a substituent, and have the same meanings as ^R5 and ^R6 in formula (4) above, and the preferred ranges are also the same.

In formula (9), ^R3 and ^R4 each independently represent a hydrogen atom or a substituent, and have the same meaning as ^R3 in formula (3) above, and the preferred range is also the same.
In formula (9), R ⁷ and R ⁸ each independently represent a hydrogen atom or a substituent, and have the same meanings as R ⁷ and R ⁸ in formula (5) above, and the preferred ranges are also the same.

In the present invention, when a squaraine dye is used as dye B, any squaraine dye represented by any of general formulas (6) to (9) can be used without any particular limitation. Examples of squaraine dyes include the compounds described in JP-A-2002-97383 and JP-A-2015-68945.
Specific examples of the squaraine dyes represented by any of general formulas (6) to (9) include the compounds described in paragraphs [0145] to [0148] of WO 2021/221122. However, the present invention is not limited to these.

(dye with built-in quencher)
The squaraine dye represented by the general formula (1) may be a quencher-containing dye in which a quencher moiety is covalently linked to the dye via a linking group. The quencher-containing dye can also be preferably used as at least one of dyes B and C. That is, the quencher-containing dye is counted as dye B or dye C depending on the wavelength of its main absorption wavelength band.
Examples of the quencher moiety include the ferrocenyl group in the above-mentioned substituent X (the substituent X described in paragraphs [0079] to [0095] of WO 2021/221122). Further examples include the quencher moiety in the quencher compound described in paragraphs [0199] to [0212] and paragraphs [0234] to [0310] of WO 2019/066043.

Specific examples of squaraine dyes represented by general formula (1) that fall under the category of dyes with built-in quenchers include the compounds described in paragraphs [0151] to [0167] of WO 2021/221122 and the following compounds (C-121) and (C-122). However, the present invention is not limited to these.

Tetraazaporphyrin dyes represented by the following general formula (8) are also preferred as dye C.

In formula (8), Y ¹ to Y ⁸ each independently represent a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxy group, an amino group, a carboxy group, a sulfonic acid group, a linear, branched, or cyclic alkyl group having 1 to 20 carbon atoms, a linear, branched, or cyclic alkoxy group having 1 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a monoalkylamino group having 1 to 20 carbon atoms, a dialkylamino group having 2 to 20 carbon atoms, a dialkylamino group having 7 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, a heteroaryl group, an alkylthio group having 6 to 20 carbon atoms, or an arylthio group having 6 to 20 carbon atoms, and may form a ring other than an aromatic ring via a linking group. M represents two hydrogen atoms, a divalent metal atom, a divalent mono-substituted metal atom, a trivalent substituted metal atom, a tetravalent substituted metal atom, or a metal oxide atom.

The tetraazaporphyrin dye represented by general formula (8) can be any commercially available product and can be used without any restrictions. For example, tetraazaporphyrin dyes commercially available from Tokyo Chemical Industry Co., Ltd., Yamada Chemical Industry Co., Ltd., Yamamoto Chemical Industry Co., Ltd., etc. can be used.

(Dye D)
There are no particular limitations on the dye D, so long as it has a main absorption wavelength band in the wavelength range of 640 to 780 nm in the laminate I and laminate II, and various dyes can be used.
The wavelength range in which dye D has its main absorption wavelength band is preferably 640 to 750 nm, and more preferably 645 to 700 nm.
Specific examples of the dye D include porphyrin-based, squaraine-based, cyanine (CY)-based, indoaniline-based, and anthraquinone-based pigments (dyes).
Preferred examples of the squaraine dye include squaraine dyes represented by the following general formula (1).

(Dye represented by general formula (1))

In general formula (1), the possible forms that A and B can take are the same as those for A and B in general formula (1) described above for dye B and dye C.

When dye D is a dye represented by general formula (1), it is preferably a dye represented by the following general formula (14):

In general formula (14), ^R1 and ^R2 have the same meanings as ^R1 and ^R2 in general formula (2). ^R41 and ^R42 also have the same meanings as ^R1 and ^R2 in general formula (2).
Among these, R ¹ , R ² , R ⁴¹ and R ⁴² are preferably an alkyl group, an alkenyl group, an aryl group or a heteroaryl group, more preferably an alkyl group, an aryl group or a heteroaryl group, and further preferably an alkyl group or an aryl group.
R ¹ , R ² , R ⁴¹ and R ⁴² may further have a substituent. Examples of the substituent that may be further substituted include the substituent that R ¹ and R ² in the general formula (2) may have, and the substituent X that A, B and G in the general formula (1) may have (the substituent X described in paragraphs [0079] to [0095] of WO 2021/221122).

^B1 , ^B2 , ^B3 and ^B4 in general formula (14) are respectively defined as ^B1 , ^B2 , ^B3 and ^B4 in general formula (2) described above. Also, ^B5 , ^B6 , ^B7 and ^B8 in general formula (14) are respectively defined as ^B1 , ^B2 , ^B3 and ^B4 in general formula (2) described above.
The substituents on the carbon atoms that can be taken as B ¹ , B ² , B ³ , B ⁴ , B ⁵ , B ⁶ , B ⁷ , and B ⁸ may further have a substituent. Examples of the substituents that may further have include the substituent X that A, B, and G in the general formula (1) may have (the substituent X described in paragraphs [0079] to [0095] of WO 2021/221122).

In general formula (14), ^R1 and ^R2 may be bonded to each other to form a ring, and ^R1 or ^R2 may be bonded to a substituent carried by ^B2 or ^B3 to form a ring. In addition, ^R41 and ^R42 may be bonded to each other to form a ring, and ^R41 or ^R42 may be bonded to a substituent carried by ^B6 or ^B7 to form a ring.
In the above, the ring formed is preferably a heterocycle or heteroaryl ring, and the size of the ring formed is not particularly limited, but is preferably a 5-membered or 6-membered ring. The number of rings formed is also not particularly limited, and may be one or two or more. Examples of the form in which two or more rings are formed include a form in which the substituents carried by ^R1 and ^B2 , and the substituents carried by ^R2 and ^B3, are bonded to each other to form two rings.

Specific examples of dye D represented by general formula (1) include the compounds described in paragraphs [0097] to [0099] of WO 2023/228799. However, the present invention is not limited to these.

As the dye D, an anthraquinone dye is preferred, and an anthraquinone dye represented by the following general formula (20) is more preferred, from the viewpoint of achieving a higher level of both suppression of brightness reduction and suppression of the influence of reflected color on the original color of the displayed image.

In the above formula, A represents a hydroxy group or —NH—R ⁶² .
R ⁶¹ and R ⁶² each represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 10 carbon atoms, an alicyclic hydrocarbon group having 3 to 10 carbon atoms, or a group represented by the following formula (20b).

In the above formula, R ⁶³ represents an alkyl group having 1 to 6 carbon atoms, a halogen atom, —SO ₃ H, —CO ₂ H, —CO ₂ R ⁶⁴ , —NHCOR ⁶⁴ , —SO ₃ R ⁶⁴ or —SO ₂ NR ⁶⁴ R ⁶⁵ .
R ⁶⁴ represents a saturated hydrocarbon group having 1 to 10 carbon atoms.
R ⁶⁵ represents a hydrogen atom or a saturated hydrocarbon group having 1 to 10 carbon atoms.
r is an integer from 0 to 5.
X ⁶¹ represents a single bond or an alkanediyl group having 1 to 6 carbon atoms.
* indicates a bond.

Examples of the aliphatic hydrocarbon group having 1 to 10 carbon atoms which can be taken as R ⁶¹ and R ⁶² include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an isopropyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, an isopentyl group, a neopentyl group, and a 2-ethylhexyl group.
Examples of the alicyclic hydrocarbon group having 3 to 10 carbon atoms that can be taken as R ⁶¹ and R ⁶² include a cyclopropyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, and a tricyclodecyl group.
The aliphatic hydrocarbon group having 1 to 10 carbon atoms and the alicyclic hydrocarbon group having 3 to 10 carbon atoms which can be taken as R ⁶¹ and R ⁶² may have a substituent, and examples of the substituent that may be had include a hydroxy group and a halogen atom.

Examples of the alkyl group having 1 to 6 carbon atoms that can be taken as R ⁶³ include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, an isopropyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, an isopentyl group, and a neopentyl group.
The —SO ₃ H and —CO ₂ H that can be taken as R ⁶³ may each have an ionic structure in which a hydrogen ion is dissociated, or may each have a salt structure. That is, “—CO ₂ H” is used to mean a carboxylate ion or a salt group thereof, and “—SO ₃ H” is used to mean a sulfonate ion or a salt group thereof. Examples of salts include salts with alkali metals such as sodium and potassium; salts with alkaline earth metals such as calcium and magnesium; ammonium salts; and the like.

Examples of saturated hydrocarbon groups having 1 to 10 carbon atoms that can be taken as R ⁶⁴ and R ⁶⁵ include linear alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, and decyl groups; branched alkyl groups such as isopropyl, isobutyl, isopentyl, neopentyl, and 2-ethylhexyl groups; and saturated alicyclic hydrocarbon groups such as cyclopropyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, and tricyclodecyl groups.
At least one hydrogen atom contained in the saturated hydrocarbon group having 1 to 10 carbon atoms which can be taken as R ⁶⁴ and R ⁶⁵ may be substituted with a halogen atom, a hydroxy group or an amino group.

Examples of —CO ₂ R ⁶⁴ include a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, a tert-butoxycarbonyl group, a hexyloxycarbonyl group, and an icosyloxycarbonyl group.

Examples of —NHCOR ⁶⁴ include an N-acetylamino group, an N-propanoylamino group, an N-butyrylamino group, an N-isobutyrylamino group, and an N-pivaloylamino group.

Examples of —SO ₃ R ⁶⁴ include a methoxysulfonyl group, an ethoxysulfonyl group, a propoxysulfonyl group, a tert-butoxysulfonyl group, a hexyloxysulfonyl group, and an icosyloxysulfonyl group.

Examples of —SO ₂ NR ⁶⁴ R ⁶⁵ include an N-methylsulfamoyl group, an N-ethylsulfamoyl group, an N-propylsulfamoyl group, an N-isopropylsulfamoyl group, an N-butylsulfamoyl group, an N-isobutylsulfamoyl group, an N-sec-butylsulfamoyl group, an N-tert-butylsulfamoyl group, an N-pentylsulfamoyl group, an N-(1-ethylpropyl)sulfamoyl group, an N-(1,1-dimethylpropyl)sulfamoyl group, an N-(1,2-dimethylpropyl)sulfamoyl group, an N-(2,2-dimethylpropyl)sulfamoyl group, an N-(1-methylbutyl)sulfamoyl group, an N-(2-methylbutyl)sulfamoyl group, an N-(3-methylbutyl)sulfamoyl group, an N-(4-methylbutyl)sulfamoyl group, an N-(5-methylbutyl)sulfamoyl group, an N-(6-methylbutyl)sulfamoyl group, an N-(7-methylbutyl)sulfamoyl group, an N-(8-methylbutyl)sulfamoyl group, an N-(9-methylbutyl)sulfamoyl group, an N-(1 ... N-1-substituted sulfamoyl groups such as an N-(1-methylhexyl)sulfamoyl group, an N-(1,4-dimethylpentyl)sulfamoyl group, an N-octylsulfamoyl group, an N-(2-ethylhexyl)sulfamoyl group, an N-(1,5-dimethyl)hexylsulfamoyl group, an N-(1,1,2,2-tetramethylbutyl)sulfamoyl group, or an N-(5-aminopentyl)sulfamoyl group;
Examples of the sulfamoyl group include N,N-disubstituted sulfamoyl groups such as N,N-dimethylsulfamoyl group, N-ethyl-N-methylsulfamoyl group, N,N-diethylsulfamoyl group, N-propyl-N-methylsulfamoyl group, N-isopropyl-N-methylsulfamoyl group, N-tert-butyl-N-methylsulfamoyl group, N-butyl-N-ethylsulfamoyl group, N,N-bis(1-methylpropyl)sulfamoyl group, and N-heptyl-N-methylsulfamoyl group.

Examples of the alkanediyl group having 1 to 6 carbon atoms that can be taken as X ⁶¹ include a methylene group, an ethylene group, a propane-1,3-diyl group, a propane-1,2-diyl group, a butane-1,4-diyl group, a pentane-1,5-diyl group, a hexane-1,6-diyl group, an ethane-1,1-diyl group, a butane-1,3-diyl group, a 2-methylpropane-1,3-diyl group, a 2-methylpropane-1,2-diyl group, a pentane-1,4-diyl group, and a 2-methylbutane-1,4-diyl group.

Examples of the anthraquinone dye represented by the above general formula (20) include the following exemplary compounds (2-1) to (2-14). However, the present invention is not limited to these.

Among the anthraquinone dyes represented by the general formula (20) above, C.I. (Colour Index International) Solvent Blue 35 (exemplified compound (2-4) above), C.I. Solvent Blue 36 (exemplified compound (2-3) above), C.I. Solvent Blue 45 (exemplified compound (2-14) above), C.I. Acid Blue 80 (exemplified compound (2-11) above), C.I. Solvent Blue 104 (exemplified compound (2-12) above), and C.I. Solvent Blue 122 (exemplified compound (2-13) above) are particularly preferred.

Furthermore, the indoaniline dye represented by general formula (v) in the light-absorbing and dissipating layer described above can also be preferably used as dye D in the wavelength-selective absorption layer.

The total content of the dyes (preferably the dyes A to D) in the wavelength selective absorption layer is preferably 0.10 to 50 mass%, more preferably 0.15 to 50 mass%, still more preferably 0.20 to 40 mass%, particularly preferably 0.25 to 40 mass%, and particularly preferably 0.30 to 35 mass%.
When the laminate I and the laminate II have the above-mentioned first wavelength-selective absorption layer and second wavelength-selective absorption layer, the description regarding the total content of the dyes (preferably the dyes A to D) in the wavelength-selective absorption layer applies to each of the first wavelength-selective absorption layer and the second wavelength-selective absorption layer.

The content of each of the dyes A to D that can be contained in the wavelength selective absorption layer is preferably as follows.
The content of dye A in the wavelength selective absorption layer is preferably 0.05 to 50% by mass, and more preferably 0.2 to 40% by mass. The content of dye B in the wavelength selective absorption layer is preferably 0.01 to 30% by mass, and more preferably 0.1 to 15% by mass. The content of dye C in the wavelength selective absorption layer is preferably 0.01 to 30% by mass, and more preferably 0.1 to 10% by mass. The content of dye D in the wavelength selective absorption layer is preferably 0.05 to 45% by mass, and more preferably 0.1 to 30% by mass.
When the laminate I and the laminate II have the above-mentioned first wavelength selective absorption layer and second wavelength selective absorption layer, the description regarding the contents of each of the dyes A to D that can be contained in the wavelength selective absorption layer applies to each of the first wavelength selective absorption layer and the second wavelength selective absorption layer.

When the wavelength selective absorption layer contains all of the four dyes A to D, the content ratio of the dyes A to D in the wavelength selective absorption layer is, in mass ratio, preferably dye A:dye B:dye C:dye D=1-50:0.1-10:1:0.1-20, and more preferably 1-40:0.2-10:1:0.2-15.
When the laminate I and the laminate II have the above-mentioned first wavelength selective absorption layer and second wavelength selective absorption layer, the description regarding the content ratio of each of the dyes A to D in the wavelength selective absorption layer applies to the content ratio of each of the dyes A to D as a whole of the dyes contained in the first wavelength selective absorption layer and the second wavelength selective absorption layer.

If at least one of dyes B and C is a dye containing a quencher, the content of the dye containing a quencher is preferably 0.1 to 45% by mass relative to 100% by mass of the wavelength-selective absorption layer, in terms of anti-reflection effect.

<Resin>
The resin contained in the wavelength selective absorption layer (hereinafter also referred to as "matrix resin") is not particularly limited as long as it can disperse (preferably dissolve) the dye. Among them, a resin that can satisfactorily suppress external light reflection and brightness reduction and can also maintain the original color of the image of the OLED display device at an excellent level is preferred.
When at least one of dyes B and C is a squaraine dye represented by the general formula (1), the matrix resin is preferably a low-polarity matrix resin that allows the squaraine dye to exhibit a sharper absorption peak. The sharper absorption peak of the squaraine dye satisfies the above-mentioned relational expressions (I) to (VI) to a preferred level, thereby enabling the original color of images produced by OLED display devices to be maintained at a superior level. Here, low polarity preferably refers to an fd value defined by the following relational expression I of 0.50 or greater.
Relational expression I: fd=δd/(δd+δp+δh)
In Relational Formula I, δd, δp, and δh represent the terms corresponding to the London dispersion force, the dipole-dipole force, and the hydrogen bonding force, respectively, relative to the solubility parameter δt calculated by the Hoy method. Specific calculation methods are described below. That is, fd represents the ratio of δd to the sum of δd, δp, and δh.
By setting the fd value to 0.50 or more, it becomes easier to obtain a sharper absorption waveform.
When the wavelength selective absorption layer contains two or more types of matrix resins, the fd value is calculated as follows.
fd=Σ( _wi・fd _i )
Here, _wi represents the mass fraction of the i-th matrix resin, and fd _i represents the fd value of the i-th matrix resin.

-Term δd corresponding to London dispersion force-
The term δd corresponding to the London dispersion force refers to the δd determined for Amorphous Polymers described in the section "2) Method of Hoy (1985, 1989)" on pages 214-220 of the literature "Properties of Polymers ^3rd , Elsevier, (1990)," and is calculated according to the description in the above section of the literature.

- term corresponding to dipole-dipole force δp -
The term δp corresponding to the dipole-dipole force refers to the δp determined for the amorphous polymers described in the section "2) Method of Hoy (1985, 1989)" on pages 214-220 of the literature "Properties of Polymers ^3rd , Elsevier, (1990)," and is calculated according to the description in the above section of the literature.

- term corresponding to hydrogen bonding force δh -
The term δh corresponding to the hydrogen bonding strength refers to the δh determined for the Amorphous Polymers described in the literature "Properties of Polymers ^3rd , Elsevier, (1990)" on pages 214 to 220, in the section "2) Method of Hoy (1985, 1989)," and is calculated according to the description in the above section of the literature.

Furthermore, if the matrix resin is a resin exhibiting a certain degree of hydrophobicity, the moisture content of the wavelength-selective absorption layer can be set to a low moisture content of, for example, 0.5% or less, which is preferable from the viewpoint of improving the light resistance of the laminate I (excluding the light-absorbing and disappearing layer) and the laminate II containing the wavelength-selective absorption layer.
The resin may contain any conventional component in addition to the polymer, but the fd of the matrix resin is a calculated value for the polymer that constitutes the matrix resin.

Preferred examples of the matrix resin include polystyrene resin and cyclic polyolefin resin, with polystyrene resin being more preferred. Typically, the fd value of polystyrene resin is 0.45 to 0.60, and the fd value of cyclic polyolefin resin is 0.45 to 0.70. As mentioned above, it is preferable to use a resin with an fd value of 0.50 or more.
In addition to these preferred resins, it is also preferable to use resin components that impart functionality to the wavelength-selective absorption layer, such as an extensible resin component and a release property-controlling resin component, which will be described later. That is, in the present invention, the term "matrix resin" is used to mean not only the resins described above, but also the extensible resin component and the release property-controlling resin component.
The matrix resin preferably contains a polystyrene resin in order to sharpen the absorption waveform of the dye.

(Polystyrene resin)
The polystyrene contained in the polystyrene resin refers to a polymer containing a styrene component. The polystyrene preferably contains 50% by mass or more of the styrene component. The wavelength selective absorption layer may contain one type of polystyrene or two or more types of polystyrene. Here, the styrene component is a structural unit derived from a monomer having a styrene skeleton in its structure.
In order to control the photoelastic coefficient and hygroscopicity within the ranges preferred for the wavelength selective absorption layer, the polystyrene preferably contains 70% by mass or more, and more preferably 85% by mass or more, of a styrene component. It is also preferable that the polystyrene is composed only of a styrene component.
As the polystyrene resin, the description of the polystyrene resin described in [0106] to [0110] of WO 2023/228799 can be applied as is.

The wavelength selective absorption layer preferably contains a polyphenylene ether resin in addition to the polystyrene resin. By containing both the polystyrene resin and the polyphenylene ether resin, the toughness of the wavelength selective absorption layer can be improved and the occurrence of defects such as cracks can be suppressed even in harsh environments such as high temperature and high humidity.
As the polyphenylene ether resin, Zylon S201A, S202A, S203A (all trade names) manufactured by Asahi Kasei Corporation can be preferably used. Alternatively, a resin prepared by pre-mixing polystyrene resin and polyphenylene ether resin can be used. As a mixed resin of polystyrene resin and polyphenylene ether resin, for example, Zylon 1002H, 1000H, 600H, 500H, 400H, 300H, 200H (all trade names) manufactured by Asahi Kasei Corporation can be preferably used.
When the wavelength selective absorption layer contains a polystyrene resin and a polyphenylene ether resin, the mass ratio of the two, polystyrene resin/polyphenylene ether resin, is preferably 99/1 to 50/50, more preferably 98/2 to 60/40, and even more preferably 95/5 to 70/30. By setting the blending ratio of the polyphenylene ether resin within the above preferred range, the wavelength selective absorption layer has sufficient toughness, and when solution casting is performed, the solvent can be appropriately evaporated.

(Cyclic polyolefin resin)
The cyclic olefin compound forming the cyclic polyolefin contained in the cyclic polyolefin resin (also referred to as polycycloolefin resin) is not particularly limited as long as it is a compound having a ring structure containing a carbon-carbon double bond, and examples thereof include norbornene compounds, monocyclic olefin compounds other than norbornene compounds, cyclic conjugated diene compounds, and vinyl alicyclic hydrocarbon compounds.
Examples of cyclic polyolefins include (1) polymers containing structural units derived from norbornene compounds, (2) polymers containing structural units derived from monocyclic olefin compounds other than norbornene compounds, (3) polymers containing structural units derived from cyclic conjugated diene compounds, (4) polymers containing structural units derived from vinyl alicyclic hydrocarbon compounds, and hydrogenated polymers containing structural units derived from each of the compounds (1) to (4).
In the present invention, the polymer containing a structural unit derived from a norbornene compound and the polymer containing a structural unit derived from a monocyclic olefin compound include ring-opened polymers of each compound.
As the cyclic polyolefin resin, the description of the cyclic polyolefin resin described in paragraphs [0112] to [0125] of WO 2023/228799 can be applied as is.

The resins described above in the section on the light-absorbing and dissipating layer can also be preferably used as the resin for the wavelength-selective absorption layer. Furthermore, the following descriptions can also be applied to the various structural units described in the resins described above in the section on the light-absorbing and dissipating layer (structural units having an aromatic ring, structural units having an alicyclic structure, structural units having an alkyl group with 1 to 14 carbon atoms), in addition to the above descriptions, and they can also contain structural units having a polar group, as described below.

<Structural units having aromatic rings>
The polymer constituting the resin of the wavelength selective absorption layer preferably contains a polymer having a structural unit with an aromatic ring.
In addition to the structural units derived from monomers that lead to structural units having an aromatic ring as described in the section on the light-absorbing and dissipative layer above, examples include structural units derived from chain polymerization monomers having an aromatic ring and a carbon-carbon double bond, and preferred structural units are those derived from styrene; alkylstyrenes such as α-methylstyrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 3,5-dimethylstyrene, 2,4-dimethylstyrene, o-ethylstyrene, p-ethylstyrene, and tert-butylstyrene; and substituted styrenes in which a hydroxyl group, alkoxy group, carboxy group, halogen atom, or the like has been introduced into the benzene nucleus of styrene, such as hydroxystyrene, tert-butoxystyrene, vinylbenzoic acid, o-chlorostyrene, and p-chlorostyrene.
In the polymer having a structural unit having an aromatic ring, the content of the structural unit having an aromatic ring is preferably 5 to 100 mol %, more preferably 10 to 100 mol %, and even more preferably 20 to 100 mol %, when the total of all structural units of the polymer having a structural unit having an aromatic ring is taken as 100 mol %.
The aromatic ring-containing structural unit may be used alone or in combination of two or more types.

<Structural Unit Having Alicyclic Structure>
The polymer constituting the resin of the wavelength selective absorption layer preferably contains a polymer having a structural unit with an alicyclic structure.
In addition to the structural units derived from monomers that lead to structural units having an aromatic ring as described above in the section on the light-absorbing and dissipating layer, structural units derived from dicyclopentenyl (meth)acrylate are preferred.
In the polymer having a structural unit having an alicyclic structure, the content of the structural unit having an alicyclic structure is preferably 1 to 90 mol%, more preferably 5 to 90 mol%, even more preferably 10 to 80 mol%, particularly preferably 20 to 80 mol%, and especially preferably 25 to 80 mol%, when the total of all structural units of the polymer having a structural unit having an alicyclic structure is taken as 100 mol%.
The structural unit having an alicyclic structure may be used alone or in combination of two or more types.

<Structural Unit Having an Alkyl Group Having 1 to 14 Carbon Atoms>
The polymer constituting the resin of the wavelength selective absorption layer may contain a structural unit having an alkyl group having 1 to 14 carbon atoms from the viewpoint of adjusting the glass transition temperature, etc. As the structural unit having an alkyl group having 1 to 14 carbon atoms, the structural unit having an alkyl group having 1 to 14 carbon atoms described in the section on the light-absorbing and disappearing layer above is preferred. In the present invention, the structural unit having an alkyl group having 1 to 14 carbon atoms may be used alone, or two or more types may be used in combination.
In the polymer constituting the resin of the wavelength selective absorption layer, the content of the structural unit having an alkyl group having 1 to 14 carbon atoms is preferably 0 to 95 mol %, more preferably 0 to 70 mol %, still more preferably 0 to 50 mol %, and particularly preferably 0 to 20 mol %, when the total of all structural units of the polymer is 100 mol %.

<Structural Unit Having a Polar Group>
The polymer constituting the resin of the wavelength selective absorption layer may contain a polymer having a polar group. Examples of the polar group contained in the polymer having a polar group include a carboxy group, a hydroxy group (including a phenolic hydroxy group), a nitrogen-containing aromatic ring group such as an oxazoline ring group, an amide group, etc., and the carboxy group or the oxazoline ring group is preferred.
The polymer having a polar group preferably contains a structural unit having a polar group, and examples thereof include a structural unit derived from a chain polymerization monomer having a polar group and a carbon-carbon double bond, and preferred are structural units derived from (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, 4-vinylpyridine, 4-vinylpyrrolidone, 2-isopropenyl-2-oxazoline, 4-vinylphenol, or the like.

In the polymer having a polar group, the content of the structural unit having a polar group is preferably 0.5 to 95 mol%, more preferably 1.0 to 70 mol%, even more preferably 1.5 to 50 mol%, and particularly preferably 2.0 to 45 mol%, when the total of all structural units of the polymer having a polar group is taken as 100 mol%.

In particular, when the laminate I and the laminate II have the above-mentioned first wavelength-selective absorption layer and second wavelength-selective absorption layer, it is preferable that the resin in at least one of the first wavelength-selective absorption layer and the second wavelength-selective absorption layer contains a polymer having a polar group, from the viewpoint of exhibiting excellent interlayer adhesion.
Examples of polymers having a polar group include polymers having a structural unit having the above-mentioned polar group and at least one of the above-mentioned structural units having an aromatic ring, structural units having an alicyclic structure, and structural units having an alkyl group having 1 to 14 carbon atoms. Polymers having a structural unit having at least one polar group selected from a carboxy group, a hydroxy group (including a phenolic hydroxy group), a nitrogen-containing aromatic ring group such as an oxazoline ring group, and an amide group, and at least one of the above-mentioned structural units having an aromatic ring and structural units having an alicyclic structure are preferred, and polymers having a structural unit having at least one polar group selected from a carboxy group and an oxazoline ring group, and the above-mentioned structural unit having an aromatic ring are more preferred.
As the polymer having an oxazoline ring group, an oil-soluble polymer having an oxazoline ring group is preferred, and an oil-soluble styrene copolymer containing an oxazoline ring group is more preferred.
As the polymer having an oxazoline ring group, a commercially available product may be used, for example, EPOCROS RPS-1005 (trade name) manufactured by Nippon Shokubai Co., Ltd.

The weight average molecular weight (Mw) of the polymer constituting the resin of the wavelength selective absorption layer is preferably 10,000 or more, more preferably 10,000 to 200,000, and even more preferably 15,000 to 150,000.
In the present invention, the weight average molecular weight of the polymer can be measured as a molecular weight converted into polystyrene by gel permeation chromatography (GPC).
Specifically, a GPC apparatus HLC-8220 (trade name, manufactured by Tosoh Corporation) is used, tetrahydrofuran is used as an eluent, and G3000HXL+G2000HXL columns (both trade names, manufactured by Tosoh Corporation) are used, and detection can be performed by RI (differential refractive index) at 23°C and a flow rate of 1 mL/min.

The wavelength selective absorption layer preferably contains 5% by mass or more of the matrix resin, more preferably 20% by mass or more, even more preferably 50% by mass or more, particularly preferably 70% by mass or more, and most preferably 80% by mass or more.
The content of the matrix resin in the wavelength selective absorption layer is usually 99.90% by mass or less, and preferably 99.85% by mass or less.

(Extensible resin component)
The wavelength-selective absorption layer can contain an appropriately selected resin component exhibiting extensibility (also referred to as an extensible resin component). Specific examples include acrylonitrile-butadiene-styrene resin (ABS resin), styrene-butadiene resin (SB resin), isoprene resin, butadiene resin, polyether-urethane resin, and silicone resin. Furthermore, these resins may be further hydrogenated as appropriate.
As the extensible resin component, it is preferable to use an ABS resin or an SB resin, and it is more preferable to use an SB resin.

The above-mentioned SB resin can be, for example, a commercially available product. Examples of such commercially available products include TR2000, TR2003, and TR2250 (all trade names, manufactured by JSR Corporation), Clearen 210M, 220M, and 730V (all trade names, manufactured by Denka Company Limited), Asaflex 800S, 805, 810, 825, 830, and 840 (all trade names, manufactured by Asahi Kasei Corporation), and Eporex SB2400, SB2610, and SB2710 (all trade names, manufactured by Sumitomo Chemical Co., Ltd.).

The wavelength-selective absorption layer preferably contains 15 to 95% by mass of the extensible resin component in the matrix resin, more preferably 20 to 50% by mass, and even more preferably 25 to 45% by mass.

When the extensible resin component is used alone to prepare a sample 30 μm thick and 10 mm wide, and the breaking elongation at 25°C is measured in accordance with JIS 7127, it is preferable that the extensible resin component exhibits a breaking elongation of 10% or more, and more preferably 20% or more.

<Adhesion improver>
When a gas barrier layer is provided adjacent to the wavelength selective absorption layer, the wavelength selective absorption layer preferably contains an adhesion improver to improve adhesion to the gas barrier layer. The structure of the adhesion improver is not particularly limited as long as adhesion to the gas barrier layer is obtained.
For example, when the gas barrier layer contains polyvinyl alcohol as a forming material, the adhesion improver preferably has a structure that bonds with the hydroxyl group of the polyvinyl alcohol, more preferably a polymer having a boronic acid-containing group, and even more preferably a polymer containing a structural unit having a boronic acid-containing group.
As the polymer having a boronic acid-containing group, the description of the copolymer (a) in paragraphs [0022] to [0083] of Japanese Patent No. 6722602 can be applied as is.
The boronic acid-containing group is not limited to a group represented by -B(OH) ₂ , but also refers to a group represented by -B( ^OR11 )( ^OR12 ) ( ^R11 and ^R12 may be linked together) in the structural unit represented by general formula (II) described in paragraph [0025] of Japanese Patent No. 6722602.
When the wavelength selective absorption layer contains a polymer having a boronic acid-containing group, the boronic acid-containing polymer contained in the wavelength selective absorption layer is unevenly distributed in the wavelength selective absorption layer at the interface with the gas barrier layer, and —B—OH in the boronic acid-containing group forms a chemical bond such as a boronic acid ester with a hydrophilic group such as an —OH group in the gas barrier layer, thereby improving adhesion.
The boronic acid-containing polymer is not included in the polymer constituting the transparent resin in the wavelength selective absorption layer.
Here, the presence of a boronic acid-containing group at the interface between the wavelength selective absorption layer and the gas barrier layer, or the formation of a chemical bond such as a boronic acid ester between the boronic acid-containing group and a hydrophilic group such as an —OH group in the gas barrier layer, can be confirmed by, for example, time-of-flight secondary ion mass spectrometry (TOF-SIMS). For TOF-SIMS, the method described in "Surface Analysis Technology Selection: Secondary Ion Mass Spectrometry" edited by the Japan Surface Science Society and published by Maruzen Co., Ltd. (1999) can be employed. Specifically, fragments derived from the boronic acid-containing group or the chemical bond such as a boronic acid ester formed between the boronic acid-containing group and a hydrophilic group such as an —OH group in the gas barrier layer are detected.
In the present invention, the phrase "the wavelength selective absorption layer further contains a polymer having a boronic acid-containing group" includes an embodiment in which the wavelength selective absorption layer contains a polymer having a boronic acid-containing group, as well as an embodiment in which the boronic acid-containing group of the polymer having the boronic acid-containing group is used to form a chemical bond with a hydrophilic group such as an —OH group in the gas barrier layer.

Furthermore, acid-modified resins such as the "Tuftec M series" manufactured by Asahi Kasei Chemicals Corporation, the "Admer series" and "Unistall series" manufactured by Mitsui Chemicals, Inc., the "Umex series" manufactured by Sanyo Chemical Industries, Ltd., and the "Hardlen series" manufactured by Toyobo Co., Ltd. can also be preferably used as adhesion improvers to be added to the wavelength-selective absorption layer.

The content of the adhesion improver in the wavelength selective absorption layer is, for example, preferably 0.1 to 15% by mass, more preferably 0.3 to 13% by mass, and even more preferably 0.5 to 10% by mass.

<Other ingredients>
The light-absorbing and dissipating layer and wavelength-selective and absorbing layer of the present invention may contain a leveling agent (surfactant) and the like in addition to the above-mentioned components (dye, resin, and in the light-absorbing and dissipating layer, further a radical generator).

(Leveling agent)
The light-absorbing and dissipating layer and the wavelength-selective absorption layer may each appropriately contain a leveling agent (surfactant). Commonly used compounds may be used as the leveling agent, with fluorine-containing surfactants being particularly preferred. Specific examples include the compounds described in paragraphs [0028] to [0056] of JP-A No. 2001-330725. Furthermore, commercially available products such as the Megafac F (trade name) series manufactured by DIC Corporation may also be used.
The content of the leveling agent in the light-absorbing and disappearing layer or the wavelength-selective absorbing layer is adjusted appropriately depending on the purpose.

In addition to the above components, the light-absorbing and dissipating layer and the wavelength-selective absorbing layer may each contain low-molecular-weight plasticizers, oligomeric plasticizers, retardation adjusters, ultraviolet absorbers, anti-degradants, peel promoters, infrared absorbers, antioxidants, fillers, compatibilizers, etc.

(Matte agent)
Fine particles may be added to the surfaces of the laminate I, and the laminates II and pre-III to impart slip properties and prevent blocking. As the fine particles, silica (silicon dioxide, SiO ₂ ) whose surface is coated with hydrophobic groups and takes the form of secondary particles is preferably used. In addition to or instead of silica, fine particles such as titanium dioxide, aluminum oxide, zirconium oxide, calcium carbonate, talc, clay, calcined kaolin, calcined calcium silicate, hydrated calcium silicate, aluminum silicate, magnesium silicate, and calcium phosphate may also be used. Examples of commercially available fine particles include R972 and NX90S (both manufactured by Nippon Aerosil Co., Ltd.).

These microparticles function as a so-called matting agent, and the addition of the microparticles creates minute irregularities on the surface of laminate I and the laminate of laminate II and laminate pre-III. These irregularities prevent laminate I from sticking together, laminate II and laminate pre-III from sticking together, or laminate I from sticking to other films, or laminate II from sticking to other films, even when they are overlapped, ensuring smoothness.
When the laminate I and the laminate of the laminate II and the laminate pre-III contain a matting agent as fine particles, the minute irregularities caused by protrusions of fine particles protruding from the filter surface have a particularly large effect of improving slip properties and anti-blocking properties when the number of protrusions having a height of 30 nm or more is ¹⁰⁴ / ^mm2 or more.

Methods for applying fine particles to the surface layer of the laminate I, and the laminates of the laminate II and laminate pre-III include means such as multilayer casting and coating.
The content of the matting agent in the laminate I, and the laminate of the laminate II and the laminate pre-III is adjusted appropriately depending on the purpose.
The matting agent (fine particles) added to the surface of laminate I (also referred to as being applied to the surface layer) also remains present on the surface of the light transmission-absorption filter I obtained using laminate I, and can prevent light transmission-absorption filters I from sticking to each other, or light transmission-absorption filter I and other films, etc., when they are overlapped. The same is true for laminates II and laminate pre-III, and can prevent light transmission-absorption filters II from sticking to each other, or light transmission-absorption filter II and other films, etc., when they are overlapped.
It is also preferable to apply a matting agent to the surface layer of the light transmission/absorption filter of the present invention from the same viewpoint as in the case of the laminate I, and the laminate of the laminate II and the laminate pre-III.

<Methods of manufacturing laminate I, laminate II, and laminate pre-III>
(Method for producing the light-absorbing and dissipating layer and the wavelength-selective absorption layer)
The light-absorbing and dissipating layer in the laminate I and laminate pre-III and the wavelength-selective and absorbing layer in the laminate I and laminate II can be produced by a conventional method such as a solution film-forming method, a melt extrusion method, or a method of forming a coating layer on a substrate film (support film) by any method (coating method), and stretching can also be combined as appropriate. The light-absorbing and dissipating layer and the wavelength-selective and absorbing layer are preferably produced by a coating method.
As the solution casting method and melt extrusion method, the descriptions of the solution casting method and melt extrusion method in paragraphs [0197] to [0203] of WO 2021/132674 can be applied as they are, except that "light-absorbing filter" is read as "light-absorbing disappearing layer" or "wavelength-selective absorption layer".

(Coating method)
In the coating method, a solution of the material for the light-absorbing and disappearing layer or the wavelength-selective absorption layer is applied to a support film to form a coating layer. A release agent or the like may be applied in advance to the surface of the support film as appropriate to control adhesion to the coating layer. The coating layer may also be formed on the support film via an optional resin layer. The coating layer can be used by laminating it to another member via an adhesive layer in a subsequent process and then peeling off the support film. Any adhesive can be used as the adhesive constituting the adhesive layer. The support film can be stretched together with the solution of the material for the light-absorbing and disappearing layer or the wavelength-selective absorption layer, or with the coating layer laminated on the support film.

The solvent used in the solution of the material for the light-absorbing and dissipating layer or wavelength-selective absorption layer can be selected appropriately based on factors such as whether the solvent can dissolve or disperse the material for the light-absorbing and dissipating layer or wavelength-selective absorption layer, whether it can easily form a uniform surface during the coating and drying processes, whether the liquid can be stored, and whether it has an appropriate saturated vapor pressure.

- Addition of components constituting the light-absorbing and dissipating layer or the wavelength-selective absorption layer -
The timing of adding the dye and the radical generator to the material of the light-absorbing and disappearing layer is not particularly limited as long as they are added at the time of film formation. For example, they may be added at the time of synthesis of the polymer constituting the matrix resin, or they may be mixed with the material of the light-absorbing and disappearing layer when preparing a coating solution for the material of the light-absorbing and disappearing layer. Note that when the radical generator contains a combination of compound A and compound B, and compound A is bonded to the polymer constituting the resin, compound A is added when the polymer constituting the resin is added.
The timing of adding the dye to the material for the wavelength selective absorption layer is not particularly limited as long as it is added at the time of film formation. For example, the dye may be added at the time of synthesis of the polymer constituting the resin, or may be mixed with the material for the wavelength selective absorption layer when preparing a coating solution for the material for the wavelength selective absorption layer.

- Support film -
The support film used to form the light-absorbing and disappearing layer or wavelength-selective absorption layer by a coating method or the like preferably has a film thickness of 2 to 100 μm, more preferably 5 to 100 μm, even more preferably 10 to 75 μm, and particularly preferably 15 to 65 μm. When the film thickness is equal to or greater than the above-mentioned preferable lower limit, sufficient mechanical strength is easily ensured, and defects such as curling, wrinkling, and buckling are unlikely to occur. Furthermore, when the film thickness is equal to or less than the above-mentioned preferable upper limit, when a multilayer film comprising a light-absorbing and disappearing layer or wavelength-selective absorption layer and a support film, or even a multilayer film comprising a light-absorbing and disappearing layer, a wavelength-selective absorption layer, and a support film, is stored, for example, in a long roll form, the surface pressure applied to the multilayer film is easily adjusted to an appropriate range, and adhesion defects are unlikely to occur.

The surface energy of the support film is not particularly limited, but the adhesive strength between Laminate I, Laminate II or Laminate pre-III and the support film can be adjusted by adjusting the relationship between the surface energy of the material and coating solution of the light-absorbing and dissipating layer or wavelength-selective absorption layer and the surface energy of the surface of the support film on which the light-absorbing and dissipating layer or wavelength-selective absorption layer is to be formed. Reducing the difference in surface energy tends to increase adhesive strength, while increasing the difference in surface energy tends to decrease adhesive strength, and these can be set appropriately.

Furthermore, the surface roughness of the support film is not particularly limited, but can be adjusted, for example, for the purpose of preventing adhesion failure when a multilayer film of Laminate I, Laminate II, or Laminate pre-III and a support film is stored in the form of a long roll, depending on the relationship between the surface energy, hardness, and surface roughness of the surface of Laminate I, Laminate II, or Laminate pre-III opposite the support film and the surface energy and hardness of the surface of the support film opposite the side on which Laminate I, Laminate II, or Laminate pre-III is formed. Increasing the surface roughness tends to suppress adhesion failure, while decreasing the surface roughness tends to reduce the surface roughness of Laminate I, Laminate II, or Laminate pre-III and the haze of Laminate I, Laminate II, or Laminate pre-III, and can be set appropriately.

Any suitable material or film can be used as such a support film. Specific materials include polyester polymers (including polyethylene terephthalate), olefin polymers, cycloolefin polymers, (meth)acrylic polymers, cellulose polymers, and polyamide polymers. Furthermore, the support film can be subjected to appropriate surface treatments to adjust its surface properties. For example, corona treatment, room temperature plasma treatment, and saponification treatment can be used to reduce surface energy, while silicone treatment, fluorine treatment, and olefin treatment can be used to increase surface energy.

(Diffusion-preventing layer)
In the laminate I, the wavelength selective absorption layer, the diffusion-preventing layer, and the light absorbing and dissipating layer are preferably arranged in this order so as to be in direct contact with each other.
The diffusion-inhibiting layer is provided between the wavelength-selective absorption layer and the light-absorbing and dissipating layer, and has the effect of inhibiting components such as dyes contained in the wavelength-selective absorption layer from diffusing into the light-absorbing and dissipating layer, and may be any layer as long as it has the effect of inhibiting components such as dyes and radical generators contained in the light-absorbing and dissipating layer from diffusing into the wavelength-selective absorption layer.
Diffusion of the components in the wavelength-selective absorption layer into the light-absorbing and dissipating layer can occur either when the wavelength-selective absorption layer is formed on the light-absorbing and dissipating layer, or when the wavelength-selective absorption layer is formed on the light-absorbing and dissipating layer. Diffusion of the components in the light-absorbing and dissipating layer into the wavelength-selective absorption layer can occur either when the light-absorbing and dissipating layer is formed on the wavelength-selective absorption layer, or when the light-absorbing and dissipating layer is formed on the wavelength-selective absorption layer.
By providing a diffusion-preventing layer between the wavelength-selective absorption layer and the light-absorbing and dissipating layer, the laminate I can suppress the diffusion of components in the wavelength-selective absorption layer into the wavelength-selective absorption layer and the diffusion of components in the light-absorbing and dissipating layer into the wavelength-selective absorption layer, as described above. This allows the fading and decolorization reaction of the dye in the light-absorbing and dissipating layer due to ultraviolet irradiation of the laminate I to occur as a fading and decolorization reaction of the dye in the light-absorbing and dissipating layer caused by a compound in the light-absorbing and dissipating layer that generates radicals upon ultraviolet irradiation. The provision of the diffusion-preventing layer makes it possible for the light transmission and absorption filter I obtained using the laminate I to more effectively achieve the desired light absorption characteristics derived from the wavelength-selective absorption layer and the light-absorbing and dissipating layer, respectively.

In a configuration in which the wavelength-selective absorption layer, the diffusion-preventing layer, and the light-absorbing/dissipating layer are laminated in this order in direct contact with each other, it is believed that when the wavelength-selective absorption layer is formed on the diffusion-preventing layer or when the wavelength-selective absorption layer is formed on the diffusion-preventing layer, the diffusion-preventing layer swells due to the solvent (solvent) in the coating solution for forming the light-absorbing/dissipating layer, and the free volume in the diffusion-preventing layer increases. From this perspective, in the laminate I, it is preferable that the resin constituting the diffusion-preventing layer provided between the wavelength-selective absorption layer and the light-absorbing/dissipating layer has low affinity for the solvent used when forming the wavelength-selective absorption layer or the light-absorbing/dissipating layer on the diffusion-preventing layer. For example, when forming the light-absorbing/dissipating layer on the diffusion-preventing layer, if the components contained in the light-absorbing/dissipating layer, such as dyes and compounds that generate radicals upon ultraviolet irradiation, are materials that dissolve in organic solvents (non-aqueous solvents), it is preferable that the resin constituting the diffusion-preventing layer be a resin with low affinity for organic solvents, i.e., a water-soluble resin. Furthermore, when forming a wavelength-selective absorption layer on a diffusion-preventing layer, if the components such as dyes contained in the wavelength-selective absorption layer are materials that dissolve in organic solvents (non-aqueous solvents), it is preferable that the resin constituting the diffusion-preventing layer be a resin with low affinity for organic solvents, i.e., a water-soluble resin.
The affinity between the solvent used in forming the wavelength-selective absorption layer or the light-absorbing/dissipating layer and the resin constituting the diffusion-preventing layer can be evaluated by the solubility parameter δt calculated by the Hoy method. The solubility parameter δt can be calculated, for example, by the method described in "2) Method of Hoy (1985, 1989)" on pages 214-220 of the literature "Properties of Polymers ^3rd , Elsevier, (1990)."
In the present invention, the absolute value of the difference between the δt value of the solvent used when forming wavelength selective absorption layer or light absorbing and dissipating layer and the δt value of the resin that constitutes diffusion-inhibiting layer is preferably 1.0 or more, more preferably 2.0 or more, even more preferably 3.0 or more, particularly preferably 4.0 or more.By adjusting the absolute value of the difference between the δt value of the solvent used when forming wavelength selective absorption layer or light absorbing and dissipating layer and the δt value of the resin that constitutes diffusion-inhibiting layer to be above the above-mentioned preferred value or more, when the solution that forms wavelength selective absorption layer or light absorbing and dissipating layer is applied on the diffusion-inhibiting layer, the solvent contained in the solution that forms wavelength selective absorption layer or light absorbing and dissipating layer is prevented from penetrating the diffusion-inhibiting layer, and the swelling of the layer located below the diffusion-inhibiting layer (when the wavelength selective absorption layer is provided on the diffusion-inhibiting layer, the light absorbing and dissipating layer located below the diffusion-inhibiting layer, when the light absorbing and dissipating layer is provided on the diffusion-inhibiting layer) is effectively suppressed, so it is preferable. The upper limit of the absolute value of the difference between the δt value of the solvent used when forming the wavelength-selective absorption layer or the light-absorbing and disappearing layer and the δt value of the resin constituting the diffusion-preventing layer is practically 20.0 or less, and the absolute value of the difference between the δt value of the solvent used when forming the wavelength-selective absorption layer or the light-absorbing and disappearing layer and the δt value of the resin constituting the diffusion-preventing layer is preferably 1.0 to 20.0, more preferably 2.0 to 20.0, even more preferably 3.0 to 20.0, and particularly preferably 4.0 to 20.0.
When two or more solvents are used in forming the wavelength-selective absorption layer or the light-absorbing/disappearing layer, the δt value of the solvent means the weight average of the δt values of the respective solvents. When the diffusion-preventing layer is composed of two or more resins, the δt value of the resin means the weight average of the respective resins.

(resin)
The resin constituting the diffusion-preventing layer is preferably a water-soluble resin. The water-soluble resin may be either a thermosetting resin or a thermoplastic resin, and if it is a thermoplastic resin, it may be crystalline or amorphous.
For example, preferred water-soluble resins include polyvinyl alcohol, polyvinylpyridine, (meth)acrylic resins, polyurethanes, polyesters, epoxy resins, cellulose resins, etc. These water-soluble resins may be at least partially modified.
The polyvinyl alcohol may be modified or unmodified. Examples of modified polyvinyl alcohol include modified polyvinyl alcohols into which groups such as acetoacetyl groups and carboxy groups have been introduced.
The degree of saponification of the polyvinyl alcohol is preferably 60.0 mol% or more, more preferably 80.0 mol% or more, and even more preferably 90.0 mol% or more, from the viewpoint of further improving the barrier properties (permeation suppression performance) of organic solvents. There is no particular upper limit, but 99.99 mol% or less is practical. The degree of saponification of the polyvinyl alcohol is a value calculated based on the method described in JIS K 6726 (1994).
The (meth)acrylic resin may be any resin containing at least one of a structural unit derived from (meth)acrylic acid and a structural unit derived from a (meth)acrylic acid ester, and is preferably a resin containing a structural unit derived from (meth)acrylic acid. The proportion of the structural units derived from (meth)acrylic acid in all structural units constituting the (meth)acrylic resin is preferably 70 to 100 mol %, more preferably 80 to 100 mol %, and even more preferably 90 to 100 mol %.
In particular, the resin constituting the diffusion-preventing layer is preferably at least one of polyvinyl alcohol and (meth)acrylic resin, and more preferably at least one of polyvinyl alcohol and poly(meth)acrylic acid, because the crystalline portion can effectively suppress the permeation of solvent molecules and swelling due to the organic solvent used in the dye layer is unlikely to occur.
Furthermore, from the viewpoint of achieving excellent adhesion between the layers constituting the laminate I, it is more preferable that the resin constituting the diffusion-preventing layer is poly(meth)acrylic acid.
The weight average molecular weight (Mw) of the resin constituting the diffusion-preventing layer is preferably 10,000 or more, more preferably 10,000 to 200,000, and even more preferably 15,000 to 150,000.
The content of the resin (preferably a water-soluble resin) in the diffusion-preventing layer is, for example, preferably 90% by mass or more, more preferably 95% by mass or more. There is no particular upper limit, but it can be 100% by mass.

From the viewpoint of further improving the diffusion-inhibiting ability, the thickness of the diffusion-inhibiting layer is preferably 0.1 to 5.0 μm, and more preferably 0.2 to 4.0 μm.

(Method for manufacturing diffusion-preventing layer)
The method for forming the diffusion-preventing layer is not particularly limited, but examples thereof include a method of forming the diffusion-preventing layer on the wavelength-selective absorption layer or the light-absorbing/disappearing layer by a conventional casting method such as spin coating or slit coating.
The solvent used in this case is not particularly limited as long as the desired diffusion-preventing layer can be obtained. For example, when the resin constituting the diffusion-preventing layer is a water-soluble resin, water-soluble solvents such as water, alcohols such as ethanol and isopropyl alcohol can be preferably used.

The diffusion-preventing layer is not limited to being provided between the wavelength-selective absorption layer and the light-absorbing and dissipating layer in the laminate I, but may be provided as appropriate between two adjacent layers constituting each of the laminates I, II, and pre-III. For example, in the laminate pre-III, a preferred configuration is one in which the support film, the diffusion-preventing layer, and the light-absorbing and dissipating layer are arranged in this order so as to be in direct contact with each other.
In this case, the diffusion-preventing layer can be formed on the support film by the above-mentioned method.

<Film Thickness of Light-Absorbing and Disappearing Layer and Wavelength-Selective Absorbing Layer>
The film thicknesses of the light-absorbing and disappearing layer and the wavelength-selective absorption layer are not particularly limited, but are preferably 1 to 18 μm, more preferably 1 to 12 μm, and even more preferably 1 to 8 μm. When the thickness is equal to or less than the above-mentioned preferred upper limit, the addition of a dye at a high concentration to a thin film can suppress a decrease in polarization degree due to fluorescence emitted by the dye (pigment). Furthermore, the effect of the quencher is also easily manifested in the light-absorbing and disappearing layer. On the other hand, when the thickness is equal to or greater than the above-mentioned preferred lower limit, it becomes easier to maintain uniformity of in-plane absorbance.
In the present invention, a film thickness of 1 to 18 μm means that the thickness of the light-absorbing and disappearing layer or the wavelength-selective and absorbing layer is within the range of 1 to 18 μm no matter where it is measured. This also applies to film thicknesses of 1 to 12 μm and 1 to 8 μm. The film thickness can be measured using an electronic micrometer (for example, manufactured by Anritsu Corporation).

<Absorbance of Laminate I, Laminate II, and Laminate pre-III>
In the laminate I, laminate II, and laminate pre-III, the largest absorbance at a wavelength showing maximum absorption within a wavelength range of 400 to 700 nm (hereinafter also simply referred to as "Ab(λ _max )") is preferably 0.3 or more, more preferably 0.5 or more, and even more preferably 0.7 or more.
However, the absorbance of the laminate I, laminate II, and laminate pre-III can be adjusted by the type of dye, the amount added, or the film thickness.

<Decolorization rate of light-absorbing and disappearing layer>
The light-absorbing and dispersible layer in the laminate I and laminate pre-III preferably has a discoloration rate of 85% or more, more preferably 87% or more, and even more preferably 90% or more, when irradiated with ultraviolet light at 25° C. There is no particular upper limit, and a value of 100% is also preferred.
The decolorization rate is calculated from the following formula using the values of Ab(λ _max ) before and after the ultraviolet irradiation test.
Decolorization rate (%) = 100-
(Ab(λ _max ) after ultraviolet irradiation/Ab(λ _max ) before ultraviolet irradiation)×100
Here, the ultraviolet irradiation test is carried out by irradiating the laminate I and laminate pre-III with ultraviolet light at an illuminance of 100 mW/cm ² and an irradiation dose of 2000 mJ/cm ² at room temperature (45°C) using an ultra-high pressure mercury lamp (for example, UL750 manufactured by HOYA Corporation) under atmospheric pressure (101.33 kPa).
The absorbance and ultraviolet irradiation test can be measured and calculated by the method described in [Measurement of absorbance at first and second sites].

It is also preferable that the light-absorbing and dissipative layer hardly generates absorption (secondary absorption) derived from a new colored structure accompanying decomposition of the dye.
For example, the presence or absence of absorption due to a new colored structure accompanying decomposition of the dye can be confirmed based on the ratio of absorbance at a specific wavelength to the above Ab(λ _max ). The specific wavelength is selected to be a wavelength at which the dye shows almost no absorption before UV irradiation and at which new absorption due to decomposition of the dye is observed.
Specifically, the presence or absence of absorption due to the new colored structure accompanying the decomposition of the dye can be confirmed based on the ratio of absorbance at a specific wavelength to the above Ab(λ _max ). The specific wavelength is selected to be a wavelength at which the dye shows almost no absorption before UV irradiation and at which new absorption due to the decomposition of the dye is observed.
As a specific example, the presence or absence of absorption derived from a new colored structure accompanying dye decomposition can be confirmed based on the ratio of the absorbance at a wavelength of 450 nm (hereinafter also simply referred to as "Ab(450)") to the above Ab( _{λ max} ). That is, the smaller the value obtained by subtracting the ratio (I) below from the ratio (II) below, the less absorption derived from a new colored structure accompanying dye decomposition is occurring, and this value is preferably less than 8.5%, more preferably 7.0% or less, and even more preferably 5.0% or less. There is no particular restriction on the lower limit, but from the viewpoint of validating the evaluation of the presence or absence of secondary absorption accompanying dye decomposition, -10% or more is practical, and -6% or more is preferable.
(I) (Ab(450) before ultraviolet irradiation/Ab(λ _max ) before ultraviolet irradiation)×100%
(II) (Ab(450) after ultraviolet irradiation/Ab(λ _max ) before ultraviolet irradiation)×100%

Alternatively, the absorbance at a wavelength of 650 nm (hereinafter also referred to simply as "Ab(650)") may be used instead of the absorbance at a wavelength of 450 nm, and the evaluation can also be performed based on the value obtained by subtracting the ratio of the following (III) from the ratio of the following (IV). The preferred range of the value obtained by subtracting the ratio of the following (III) from the ratio of the following (IV) is the same as the value obtained by subtracting the ratio of the above formula (I) from the ratio of the above formula (II).
(III) (Ab(650) before ultraviolet irradiation/Ab(λ _max ) before ultraviolet irradiation)×100%
(IV) (Ab(650) after ultraviolet irradiation/Ab(λ _max ) before ultraviolet irradiation)×100%
Here, the ultraviolet irradiation test can be preferably carried out in the same manner as described above for the extinction rate.

The light-absorbing and dissipative layer can exhibit excellent discoloration properties if both the discoloration rate and the value used to confirm the presence or absence of absorption due to the new colored structure resulting from the decomposition of the dye fall within the preferred ranges.

In the light transmission-absorption filter I obtained using the laminate I and the light transmission-absorption filter II obtained using the laminate pre-III, it is preferable that the ultraviolet-unirradiated portion of the light-absorbing and disappearing layer (the portion having the light-absorbing effect) satisfies the description of Ab(λ _max ) for the laminate I, laminate II, and laminate pre-III described above.

<Treatment of Laminate I, Laminate II, and Laminate Pre-III>
The laminate I, laminate II, and laminate pre-III may be subjected to a hydrophilization treatment such as a glow discharge treatment, a corona discharge treatment, or an alkaline saponification treatment, and the corona discharge treatment is preferably used. It is also preferable to apply the methods disclosed in JP-A-6-94915 or JP-A-6-118232.

The resulting film may be subjected to a heat treatment process, a superheated steam contact process, an organic solvent contact process, etc. as needed. Surface treatment may also be performed as appropriate.

Furthermore, as the pressure-sensitive adhesive layer, a layer made of a pressure-sensitive adhesive composition having a base polymer such as a (meth)acrylic resin, a styrene resin, a silicone resin, or the like, to which a crosslinking agent such as an isocyanate compound, an epoxy compound, or an aziridine compound has been added can also be applied.
Preferably, the description of the adhesive layer in the OLED display device described later can be applied.

<Gas barrier layer>
The laminate I may have a gas barrier layer on at least one surface. When the laminate I has a gas barrier layer, the laminate I can be a laminate I that achieves both excellent decolorization properties and excellent light fastness, and can be suitably used to produce the light transmission-absorption filter I described above.
The laminate II may have a gas barrier layer. In particular, when the laminate II has two layers, the first wavelength selective absorption layer and the second wavelength selective absorption layer, it is preferable to have a gas barrier layer between these layers. This not only can suppress decomposition of the dye by oxygen gas, but also can suppress energy transfer between the first and second wavelength selective absorption layers, thereby further suppressing decomposition of the dye.
Furthermore, the laminate pre-III may have a gas barrier layer on at least one surface. When the laminate pre-III has a gas barrier layer, the laminate pre-III can be made to have both excellent decolorization properties and excellent light resistance, and can be suitably used to produce the light transmission-absorption filter II described above.

The material for forming the gas barrier layer is not particularly limited, and examples thereof include organic materials (preferably crystalline resins) such as polyvinyl alcohol and polyvinylidene chloride, organic-inorganic hybrid materials such as sol-gel materials, and inorganic materials such as SiO ₂ , SiO _x , SiON, SiN _x and Al ₂ O _3. The gas barrier layer may be a single layer or a multilayer, and in the case of a multilayer, examples of the gas barrier layer include an inorganic dielectric multilayer film and a multilayer film in which organic materials and inorganic materials are alternately laminated.

The laminate I has a gas barrier layer at least on the surface that comes into contact with air when the above-described light transmission-absorption filter I is used, thereby making it possible to suppress a decrease in the absorption intensity of the dye in the light transmission-absorption filter I. As long as a gas barrier layer is provided at the interface of the laminate I that comes into contact with air, the gas barrier layer may be provided on only one surface of the laminate I or on both surfaces.
The laminate pre-III has a gas barrier layer at least on the surface of the light-absorbing and dissipating layer that comes into contact with air, so that a decrease in the absorption intensity of the dye in the light-absorbing and dissipating layer can be suppressed in the state of the laminate pre-III and the laminate III obtained by exposing the laminate pre-III with a mask. As long as a gas barrier layer is provided at the interface of the laminate pre-III that comes into contact with air, the gas barrier layer may be provided on only one surface or both surfaces of the laminate pre-III.
From the same viewpoint as in the case of the light transmission-absorption filter I obtained using the laminate I, it is preferable to provide a gas barrier layer in the light transmission-absorption filter of the present invention, and the description of the laminate I can be applied.

In particular, when the gas barrier layer contains a crystalline resin, it is preferable that the gas barrier layer contains a crystalline resin, has a layer thickness of 0.1 μm to 10 μm, and has an oxygen permeability of 60 cc/ ^m2 day atm or less.
In the gas barrier layer, the "crystalline resin" is a resin that has a melting point at which it undergoes a phase transition from crystal to liquid when the temperature is increased, and is capable of imparting gas barrier properties to oxygen gas to the gas barrier layer.
The above-mentioned "gas barrier layer containing a crystalline resin, having a layer thickness of 0.1 μm to 10 μm, and having an oxygen permeability of 60 cc/ ^m2 ·day·atm or less" is the same as the gas barrier layer described in paragraphs [0180] to [0184] of WO 2022/149510, and the descriptions therein can be applied as is.

<Method of manufacturing gas barrier layer>
The method for forming the gas barrier layer is not particularly limited, but may be a conventional method. For example, in the case of an organic material, examples include a casting method such as spin coating or slit coating. Other examples include a method of laminating a commercially available resin gas barrier film or a pre-prepared resin gas barrier film. Furthermore, in the case of an inorganic material, examples include a plasma enhanced chemical vapor deposition (CVD) method, a sputtering method, and a vapor deposition method.

When the laminate I has the gas barrier layer, for example, the gas barrier layer can be formed directly on the laminate I that has no gas barrier layer and that has been produced by the above-mentioned production method. In this case, it is also preferable to subject the surface of the laminate I on which the gas barrier layer is to be formed to a corona treatment.
When the laminate II has the gas barrier layer, for example, the gas barrier layer may be formed directly on the first wavelength selective absorption layer or the second wavelength selective absorption layer produced by the above-mentioned production method. In this case, it is preferable that at least one (preferably both) of the first wavelength selective absorption layer and the second wavelength selective absorption layer on which the gas barrier layer is provided contains the polymer having the oxazoline ring group described above, from the viewpoint of interlayer adhesion.
When the laminate pre-III has the gas barrier layer, for example, the gas barrier layer may be formed directly on the light-absorbing and disappearing layer formed by the above-mentioned production method. In this case, it is also preferable to subject the surface of the light-absorbing and disappearing layer on which the gas barrier layer is to be formed to a corona treatment.
In addition, when any of the optically functional films described below is used, it is also preferable to bond them via a pressure-sensitive adhesive layer. For example, it is also preferable to provide a gas barrier layer on the laminate of Laminate I, Laminate II, or Laminate pre-III, and then bond the optically functional film via a pressure-sensitive adhesive layer.

<Optical functional film>
The laminate I, laminate II, and laminate pre-III may appropriately include the gas barrier layer or any optically functional film as long as the effects of the present invention are not impaired.
The optical properties and materials of the above-mentioned optional optical functional film are not particularly limited, but a film containing (or having as its main component) at least one of cellulose ester resin, acrylic resin, cyclic olefin resin, and polyethylene terephthalate resin can be preferably used. Note that either an optically isotropic film or an optically anisotropic retardation film can be used.
As the optional optical functional film, for example, Fujitac TD80UL (trade name, manufactured by Fujifilm Corporation) can be used as the film containing a cellulose ester resin.
As the above-mentioned arbitrary optical functional film, examples of the film containing an acrylic resin include an optical film containing a (meth)acrylic resin containing a styrene-based resin as described in Japanese Patent No. 4570042, an optical film containing a (meth)acrylic resin having a glutarimide ring structure in the main chain as described in Japanese Patent No. 5041532, an optical film containing a (meth)acrylic resin having a lactone ring structure as described in Japanese Patent Laid-Open No. 2009-122664, and an optical functional film containing a (meth)acrylic resin having a glutaric anhydride unit as described in Japanese Patent Laid-Open No. 2009-139754.
Furthermore, as the above-mentioned arbitrary optical functional film, as a film containing a cyclic olefin resin, a cyclic olefin resin film described in paragraph [0029] and thereafter of JP-A-2009-237376, and a cyclic olefin resin film containing an additive that reduces Rth described in JP-A-4881827 and JP-A-2008-063536 can be used.

<Method of Manufacturing Light Transmission/Absorption Filter I>
The light transmission/absorption filter I can be obtained by irradiating the laminate I with ultraviolet light and exposing it using a mask.
The mask pattern is preferably such that the portions corresponding to the non-light-emitting portions of the OLED display element (portions from which display light is not emitted) become the above-mentioned second portions, and the portions corresponding to the light-emitting portions of the OLED display element (portions from which display light is emitted) become the above-mentioned first portions. That is, the light transmission-absorption filter I can be suitably obtained by irradiating the laminate I with ultraviolet light using a mask pattern that masks the portions corresponding to the non-light-emitting portions of the OLED display element and does not mask the portions corresponding to the light-emitting portions of the OLED display element.
The area ratio between the non-light-emitting portion of the OLED display element and the light-emitting portion of the OLED display element is as described above.
The conditions for ultraviolet irradiation can be adjusted as appropriate to obtain a light transmission-absorption filter I having a first region that includes a light-absorbency-eliminating region. For example, the pressure can be atmospheric pressure (101.33 kPa), the temperature can be a mild temperature of 10 to 60°C, the lamp output can be 10 to 320 W/cm, and the lamp used can be an air-cooled metal halide lamp, an ultra-high pressure mercury lamp, or the like. The irradiation dose can be 200 to 5000 mJ/ ^cm2 .

<Method of manufacturing the light transmission/absorption filter II>
The light transmission/absorption filter II can be obtained by laminating the laminate II and a laminate III obtained by irradiating the laminate pre-III with ultraviolet light and exposing it using a mask.
With regard to the mask pattern, the area ratio between the non-light-emitting portions of the OLED display element and the light-emitting portions of the OLED display element, and the conditions for ultraviolet light irradiation, the descriptions relating to the mask pattern, the area ratio between the non-light-emitting portions of the OLED display element and the light-emitting portions of the OLED display element, and the conditions for ultraviolet light irradiation in the above-mentioned light-transmitting-absorbing filter I can be applied by replacing laminate I with laminate pre-III and light-transmitting-absorbing filter I with laminate III.
The method for laminating the laminate II and the laminate III is not particularly limited, and they may be laminated via a pressure-sensitive adhesive layer, or they may be attached to each other to form a laminate structure. As the pressure-sensitive adhesive layer, the description of the pressure-sensitive adhesive layer described below can be applied.

The light transmission/absorption filter of the present invention may have the above-mentioned optically functional film.
The light transmission/absorption filter of the present invention may also have a layer containing an ultraviolet absorber. As the ultraviolet absorber, any commonly used compound can be used without any particular limitations, and examples thereof include the ultraviolet absorbers in the ultraviolet absorbing layer described below. The resin constituting the layer containing the ultraviolet absorber is also without any particular limitations, and examples thereof include the resins in the ultraviolet absorbing layer described below.
The content of the ultraviolet absorber in the layer containing the ultraviolet absorber is adjusted appropriately depending on the purpose.

[Display element intermediate product]
In producing the OLED display element of the present invention including the light-transmitting-absorbing filter I, it is also preferable to use a display element intermediate including the laminate I. As long as the display element intermediate includes the laminate I, the other configurations of the display element intermediate can be any configuration of an OLED display element that is commonly used in display devices, without any particular limitations.
In the display element intermediate, the laminate I and the OLED display element may be laminated so as to be in direct contact with each other, or may be bonded together via an adhesive layer. The adhesive layer may be the same as the adhesive layer described below. Furthermore, in addition to the adhesive layer, an optional layer such as a barrier film may be laminated via the adhesive layer. Any layer commonly used in OLED display elements may be used as the optional layer such as the barrier film, and the barrier film may be the same as the gas barrier layer described above.
The display element intermediate product may have a laminate structure in which either the wavelength-selective absorption layer or the light-absorbing and dissipating layer in the laminate I is closer to the OLED display element. From the viewpoint of being able to discolor the light-absorbing and dissipating layer with a small amount of ultraviolet light irradiation, it is preferable that the display element intermediate product have a laminate structure in which the wavelength-selective absorption layer in the laminate I is closer to the OLED display element than the light-absorbing and dissipating layer.

[OLED display element]
The OLED display element of the present invention includes the light-absorbing filter of the present invention, and preferably includes the above-mentioned light-absorbing filter I or II. As long as the OLED display element of the present invention includes the light-absorbing filter of the present invention, the OLED display element may use, without any particular limitation, the configuration of an OLED display element that is normally used in a display device, as the other configuration.
(OLED display element including light-transmitting/absorbing filter I)
The display element intermediate is exposed to ultraviolet light through a mask, thereby obtaining the OLED display element of the present invention, in which the laminate I contained in the display element intermediate is converted into a light-transmitting/absorbing filter I. In other words, the display element intermediate is an intermediate product as a precursor to the OLED display element of the present invention, and the OLED display element of the present invention means a finished product as an OLED display element.
As described above, the OLED display element of the present invention has a configuration in which the first portion of the light transmission-absorption filter of the present invention is disposed on a light-emitting portion of the OLED display element, and the second portion of the light transmission-absorption filter of the present invention is disposed on a non-light-emitting portion of the OLED display element.

(OLED display element including light-transmitting/absorbing filter II)
Furthermore, an OLED display element of the present invention including the above-mentioned light-transmitting-absorbing filter II can be obtained, for example, by previously producing the above-mentioned light-transmitting-absorbing filter II having first and second regions corresponding to the pattern of the light-emitting portions and non-light-emitting portions of the OLED display element, and then bonding this light-transmitting-absorbing filter II to the OLED display element or laminating it via another layer.
The above description of the lamination of the laminate I and the OLED display element can be applied as is to the lamination of the light transmitting/absorbing filter II and the OLED display element.
In an OLED display element of the present invention including the light-transmitting-absorbing filter II, the layer structure may be such that either layer of the laminate II or the laminate III in the light-transmitting-absorbing filter II is closer to the OLED display element. Note that, as described below, from the viewpoint of easily realizing suppression of color shift due to viewing angle of display light, it is preferable that the laminate III be closer to the OLED display element than the laminate II.

In an OLED display element including a light-transmitting-absorbing filter II, by adjusting the distance between the laminate III in the light-transmitting-absorbing filter II and the OLED display element layer, it is possible to suppress the effect on the transmittance of display light (reduction in brightness) and, when applied to an OLED display device having a microcavity structure, to adjust the viewing angle dependence of the color of the display light. This is because, as the distance between the laminate III in the light-transmitting-absorbing filter II and the OLED display element layer increases, the proportion of light transmitted through the second portion in the total display light perceived by the viewer increases due to the effect of parallax.
The distance between the laminate III and the OLED display element layer may be, for example, 2 to 45 μm. From the viewpoint of simultaneously suppressing a change in color of the display light due to the viewing angle by making the ratio of the light transmitted through the second portion to the entire display light perceived by the viewer equal to or greater than a certain level, and suppressing a decrease in brightness by making the ratio of the light absorbed by the second portion to the entire display light perceived equal to or less than a certain level, the distance between the laminate III and the OLED display element layer is preferably 5 to 35 μm, more preferably 10 to 30 μm, even more preferably 15 to 28 μm, and most preferably 20 to 25 μm.
The "distance between the laminate III and the OLED display element layer" is synonymous with the "distance d between the laminate III and the light emitting element layer" in the OLED display elements II-1 to II-3 described later.

In an OLED display element including a light-transmitting/absorbing filter II, from the viewpoint of simultaneously suppressing the color change of the display light due to the viewing angle and suppressing a decrease in brightness, the following OLED display elements II-1 to II-3 are preferred.
In the following OLED display elements II-1 to II-3, a laminate II, a laminate III, and a light-emitting element layer are arranged in this order, and the elements are incorporated into an OLED display device so that the laminate II faces the viewer.
(OLED display element II-1)
An OLED display element, wherein a distance d between the laminate III and the light-emitting element layer, an average area S of each light-emitting element constituting the light-emitting element layer, and an average area Sf of a portion of the first light-transmitting/absorbing site located directly above each light-emitting element satisfy the relationships of the following formulas (1) and (2):
Formula (1) 0.6≦d/√S≦7.5
Formula (2) 0.7≦Sf/S≦1.5
(OLED display element II-2)
an OLED display element, wherein a distance d between the laminate III and the light-emitting element layer, an average area S _B of each blue light-emitting element constituting the light-emitting element layer, and an average area Sf _B of a portion of the first light-transmitting and absorbing site located directly above each blue light-emitting element satisfy the relationships of the following formulas (3) and (4):
Formula (3) 1.0≦d/√S _B ≦7.0
Formula (4) 0.8≦Sf _B /S _B ≦1.2
(OLED display element II-3)
An OLED display element, wherein a distance d between the laminate III and the light-emitting element layer, an average area S _G of each green light-emitting element constituting the light-emitting element layer, and an average area Sf _G of a portion of the first light-transmitting and absorbing site located directly above each green light-emitting element satisfy the relationships of the following formulas (5) and (6):
Formula (5) 1.0≦d/ _√SG ≦7.0
Formula (6) 0.8≦Sf _G /S _G ≦1.2

In the above formulas (1) to (6), the unit of the distance d between the laminate III and the light emitting element layer is μm, and the unit of each of the average areas S, Sf, S _B , Sf _B , S _G and Sf _G is μm ² .
In the above OLED display elements II-1 to II-3, the "distance d between the laminate III and the light-emitting element layer" means the distance between the mask-exposed light-absorbing and dissipative layer in the laminate III and the light-emitting element layer, and is a value measured by observing a cross section of an element including the laminate III and the light-emitting element layer. The method for observing the cross section is not particularly limited, and examples thereof include a method in which a cross section cut out with a microtome is observed with a scanning electron microscope (SEM).
The average area S _B of each blue light-emitting element constituting the light-emitting element layer and the average area S _G of each green light-emitting element constituting the light-emitting element layer are both values measured by observation with an optical microscope. The average area S of each light-emitting element constituting the light-emitting element layer means the number average of the areas of each color light-emitting element, and is a value measured and calculated by dividing the sum of the areas of each color light-emitting element by the total number of light-emitting elements. The sum of the areas of each color light-emitting element is measured by observation with an optical microscope.
The "average area Sf of the portions of the first light-transmitting and absorbing sites located directly above each light-emitting element" refers to the number average value of the areas of the first sites that overlap with the emitted light when light is emitted from the surface of each light-emitting element perpendicular to the surface. The same applies to the "average area Sf _B of the portions of the first light-transmitting and absorbing sites located directly above each blue light-emitting element" and the "average area Sf _G of the portions of the first light-transmitting and absorbing sites located directly above each green light-emitting element," which respectively refer to the number average value of the areas of the first sites that overlap with the emitted light when light is emitted from the surface of each blue light-emitting element or each green light-emitting element perpendicular to the surface.
The average areas Sf, Sf _B , and Sf _G are values measured by observation with an optical microscope.

The above formula (1) preferably satisfies 1.5≦d/√S≦7.0, more preferably 2.5≦d/√S≦6.0, and further preferably 3.5≦d/√S≦5.7.
The above formula (2) preferably satisfies 0.8≦Sf/S≦1.3, and more preferably satisfies 0.9≦Sf/S≦1.1.
The above formula (3) preferably satisfies 1.5≦d/√S _B ≦7.0, more preferably 2.5≦d/√S _B ≦5.7, and further preferably 3.5≦d/√S _B ≦5.5.
In the above formula (4), it is preferable that 0.9≦Sf _B /S _B ≦1.1.
The above formula (5) preferably satisfies 1.5≦d/√SG _≦ 7.0, more preferably 2.7≦d/√SG _≦ 6.7, and further preferably 4.0≦d/ _√SG ≦5.0.
In the above formula (6), it is preferable that 0.9≦Sf _G /S _G ≦1.1.

[OLED display device]
The organic electroluminescence display device of the present invention (also referred to as an organic EL (electroluminescence) display device or OLED (organic light emitting diode) display device, and in the present invention, also abbreviated as an OLED display device) includes the light transmission/absorption filter of the present invention or the OLED display element of the present invention.
As long as the OLED display device of the present invention includes the light transmission-absorption filter of the present invention or the OLED display element of the present invention, the other components of a commonly used OLED display device can be used without any particular limitations. The OLED display element of the present invention is incorporated into the OLED display device of the present invention so that the light transmission-absorption filter of the present invention is on the external light side. Furthermore, as described above, the light transmission-absorption filter of the present invention is incorporated into the OLED display device of the present invention so that the first region is disposed on the light-emitting portion of the OLED display element and the second region is disposed on the non-light-emitting portion of the OLED display element.
In an OLED display device, the area ratio between the non-light-emitting portion and the light-emitting portion of the OLED display element is usually 90/10 to 60/40.
Examples of the configuration of the OLED display device of the present invention are not particularly limited, but when it includes the light transmission-absorbing filter of the present invention, examples include a display device comprising, from the opposite side to external light, glass, a layer including a TFT (thin film transistor), an OLED display element, a barrier film, a pressure-sensitive adhesive layer, the light transmission-absorbing filter of the present invention, a pressure-sensitive adhesive layer, glass, a pressure-sensitive adhesive layer, and a surface film. Also, when it includes the OLED display element of the present invention, examples include a display device comprising, from the opposite side to external light, glass, a layer including a TFT (thin film transistor), the OLED display element of the present invention, a barrier film, glass, a pressure-sensitive adhesive layer, and a surface film.
The OLED display element has a configuration in which an anode electrode, a light-emitting layer, and a cathode electrode are arranged in this order. In addition to the light-emitting layer, layers such as a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer are included between the anode electrode and the cathode electrode. For further details, see, for example, the description in Japanese Patent Application Laid-Open No. 2014-132522.
Instead of the glass, a resin film may be used.

<Adhesive Layer>
In the OLED display device of the present invention, the surface of the light transmission-absorption filter of the present invention or the OLED display element of the present invention facing external light may be bonded, via an adhesive layer, to glass, a barrier film, an optically functional film having an antireflection layer or the like, or a polarizing plate including a polarizer and a polarizing plate protective film. Furthermore, the surface of the light transmission-absorption filter of the present invention or the OLED display element of the present invention facing the external light is preferably bonded, via an adhesive layer, to glass (substrate), a barrier film, or a layer including a TFT.
In addition, when the OLED display element of the present invention has a pressure-sensitive adhesive layer on its outermost surface, the above description of the pressure-sensitive adhesive layer shall be read as a description relating to the pressure-sensitive adhesive layer that the OLED display element of the present invention has on its outermost surface.
As the pressure-sensitive adhesive layer, the descriptions relating to the pressure-sensitive adhesive layer and the forming method in the OLED display device described in [0239] to [0290] of WO 2021/132674 can be applied as is.
In addition, the pressure-sensitive adhesive composition described in WO 2021/132674 preferably contains an ultraviolet absorber described later in terms of the light resistance of the light transmission-absorption filter of the present invention and the light transmission-absorption filter contained in the OLED display element of the present invention.

<Base material>
In the OLED display device of the present invention, the light transmission-absorption filter of the present invention or the OLED display element of the present invention may be bonded to an optically functional film via a pressure-sensitive adhesive layer on the surface facing the external light side. Also, the light transmission-absorption filter of the present invention or the OLED display element of the present invention is preferably bonded to glass (substrate) via a pressure-sensitive adhesive layer on the surface facing the external light side.

The method for forming the pressure-sensitive adhesive layer is not particularly limited, and examples thereof include a method in which a pressure-sensitive adhesive composition is applied to the laminate I, the light transmission-absorption filter of the present invention (preferably light transmission-absorption filter I) or the OLED display element of the present invention by a conventional means such as a bar coater, followed by drying and curing; and a method in which the pressure-sensitive adhesive composition is first applied to the surface of a release substrate, dried, and then the pressure-sensitive adhesive layer is transferred to the laminate I, the light transmission-absorption filter of the present invention (preferably light transmission-absorption filter I) or the OLED display element of the present invention using the release substrate, followed by aging and curing.
The release substrate is not particularly limited, and any release substrate can be used, for example, the support film in the above-mentioned production methods of Laminate I, Laminate II, and Laminate pre-III.
In addition, the conditions for application, drying, aging and curing can be appropriately adjusted based on conventional methods.

<Ultraviolet absorbing layer>
The OLED display device of the present invention, including the light transmission-absorption filter of the present invention or the OLED display element of the present invention, preferably has a layer (hereinafter also referred to as an "ultraviolet absorbing layer") that inhibits light absorption (ultraviolet absorption) of the compound that generates radicals upon ultraviolet irradiation, on the viewer side of the light transmission-absorption filter of the present invention or the OLED display element of the present invention. By providing the ultraviolet absorbing layer, it is possible to prevent fading of the light transmission-absorption filter of the present invention or the light transmission-absorption filter of the present invention included in the OLED display element of the present invention due to external light.
The ultraviolet absorbing layer used in the present invention will be described below.

(ultraviolet absorber)
The ultraviolet absorbing layer generally contains a resin and an ultraviolet absorbing agent.
Specific examples of ultraviolet absorbers preferably used in the present invention include hindered phenol compounds, benzophenone compounds such as hydroxybenzophenone compounds, benzotriazole compounds, salicylic acid ester compounds, cyanoacrylate compounds, and nickel complex salt compounds.
As examples of the hindered phenol compounds and benzotriazole compounds, the hindered phenol compounds and benzotriazole compounds described in paragraph [0227] of WO 2023/234353 can also be suitably used in the present invention.
The amount of these ultraviolet absorbents added is preferably 0.1 to 30.0 parts by mass relative to 100 parts by mass of the resin constituting the ultraviolet absorbing layer.

Furthermore, from the viewpoint of further improving the light resistance of the light transmission/absorption filter of the present invention or the light transmission/absorption filter of the present invention contained in the display element of the present invention, it is also preferable to use compound (1) represented by formula (1) described in paragraphs [0229] to [0283] of WO 2023/234353 as the ultraviolet absorber. With regard to the absorption characteristics, synthesis method, and content of compound (1) represented by formula (1) described in WO 2023/234353, the descriptions in paragraphs [0279] to [0283] of WO 2023/234353 can also be suitably used in the present invention.

(resin)
The resin used in the ultraviolet absorbing layer may be any known resin, and is not particularly limited as long as it does not deviate from the spirit of the present invention. Examples of the resin include cellulose acylate resin, acrylic resin, cycloolefin resin, polyester resin, and epoxy resin.

(Installation position of ultraviolet absorbing layer)
The location of the ultraviolet absorbing layer is not particularly limited as long as it is on the viewer side of the light transmission-absorption filter of the present invention or the display element of the present invention, and it can be installed at any position. For example, it is possible to add an ultraviolet absorber to a member such as a protective film of a polarizing plate or an antireflection film to give it the function of an ultraviolet absorbing layer. In addition, an ultraviolet absorber can be added to the pressure-sensitive adhesive layer.

The present invention will be described in more detail below with reference to the following examples. The materials, amounts used, ratios, processing details, processing procedures, etc. shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention is not limited to the following examples.
In the following examples, "parts" and "%" representing compositions are by mass unless otherwise specified. Room temperature means "25°C."
All of the steps from the preparation of the light-absorbing and dissipating layer-forming solution to the production of a laminate using the light-absorbing and dissipating layer-forming solution and the use in the ultraviolet irradiation test were carried out under yellow light to prevent ultraviolet irradiation.
λ _max is a value measured by the method described below in [Measurement of absorbance at first and second sites].

The materials used to prepare the laminate are as follows:
<Polymer (resin)>
(Resin 1)
ARUFON UC-3920 (trade name) manufactured by Toagosei Co., Ltd., a carboxyl group-containing acrylic polymer, weight average molecular weight 15,500.
(Resin 2)
Adamantyl methacrylate-acrylic acid random copolymer, acrylic acid content 52 mol%, weight average molecular weight 46,300.
The acrylic acid portion of Resin 2 corresponds to Compound A having an acid group as defined in the present invention.
(Resin 3)
A benzyl methacrylate-methacrylic acid copolymer (manufactured by Fujikura Kasei Co., Ltd., Acribase FF-187 (trade name), benzyl methacrylate ratio 70%) was used as resin 3.
(Resin 4)
An amorphous reactive polymer having oxazoline groups pendant on a polystyrene main chain (Epocross RPS-1005 (trade name), manufactured by Nippon Shokubai Co., Ltd., proportion of oxazoline group-containing structural units: 3 mol%) was used as resin 4.
(Resin 5)
A cyclic polyolefin resin, Arton R5000 (trade name, manufactured by JSR Corporation, norbornene-based polymer, Tg: 135° C.), was used as resin 5.
In addition, when the resin is sold as a solution, the blending amount (unit: parts by mass) in the composition of each forming liquid described below is the blending amount of the resin itself excluding the solvent.
The resins 1 and 3 to 5 were used to form the wavelength selective absorption layer, and the resin 2 was used to form the light absorbing and disappearing layer.

<Compound B>
4-Methylquinoline (Tokyo Chemical Industry Co., Ltd., Lepidine, pKaH 5.1)

<Dye>
In the following structural formula, Bu represents a butyl group.

(Dye to be contained in the light-absorbing and dissipating layer)

(Dye to be contained in wavelength selective absorption layer)

Solvent Blue 35 (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., anthraquinone dye, λ _max 652 nm) was used as dye H-1.
PD-311F (trade name, manufactured by Yamamoto Chemical Industries, Ltd., tetraazaporphyrin copper complex dye, λ _max 585 nm) was used as dye I-2.
FDB-002 (trade name, manufactured by Yamada Chemical Industry Co., Ltd., porphyrin dye, λ _max 432 nm) was used as dye J-1.

(Adhesion improver 1)
A fluorine-containing copolymer composed of the following components was used as adhesion improver 1, synthesized in the same manner as in the synthesis of the fluorine-containing copolymer (A-19-1) described in Synthesis Example 22 of Japanese Patent No. 6722602, except that 2-(perfluorohexyl)ethyl acrylate (C6FA) was changed to 25 parts by mass, monomer II-12 described in paragraph [0063] of Japanese Patent No. 6722602 was changed to 5 parts by mass, and acrylic acid (AA) was changed to 70 parts by mass.

(Adhesion improver 2)
Tuftec M-1913 (trade name, manufactured by Asahi Kasei Corporation, maleic anhydride-modified styrene/ethylene/butylene/styrene block copolymer resin)

(Leveling Agent 1)
A polymer surfactant composed of the following components was used as leveling agent 1. In the following structural formula, the ratio of each component is a molar ratio, and t-Bu means a tert-butyl group.

(Base material 1)
A polyethylene terephthalate film Lumirror XD-510P (trade name, film thickness 50 μm, manufactured by Toray Industries, Inc.) was used as the substrate 1.
(Base material 11)
Cellulose acylate film (manufactured by Fujifilm Corporation, product name: TG60UL, film thickness 60 μm)
(Base material 21)
Cellulose acylate film (manufactured by Fujifilm Corporation, product name: ZRD40SL, film thickness 40 μm)

<<Laminate I: Preparation of laminate including wavelength-selective absorption layer and light-absorbing and dissipating layer>>
Example 1
[Preparation of Laminate No. 101 Having a Gas Barrier Layer]
<1. Fabrication of wavelength-selective absorption layer>
(1) Preparation of Wavelength-Selective Absorbing Layer Forming Solution 1 The components were mixed in the composition shown below to prepare wavelength-selective absorbing layer forming solution 1.
----------------------------------------------------------------------------------
Composition of wavelength selective absorption layer forming liquid 1 ----------------------------------------------------------------
Resin 1 86.56 parts by mass Leveling agent 1 0.08 parts by mass Dye A-321 6.19 parts by mass Dye 7-23 1.80 parts by mass Dye C-122 1.42 parts by mass Dye H-1 3.95 parts by mass Tetrahydrofuran (solvent) 566.7 parts by mass

The resulting wavelength-selective absorption layer forming solution 1 was then filtered using a filter with an absolute filtration accuracy of 5 μm (product name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

(2) Formation of Wavelength-Selective Absorption Layer 1 The wavelength-selective absorption layer-forming liquid 1 after the above-mentioned filtration treatment was applied to the substrate 1 using a bar coater so that the film thickness after drying would be 2.5 μm, and the applied coating was dried at 120° C. to prepare a substrate 2 with a wavelength-selective absorption layer.

<2. Preparation of substrate 3 with diffusion-preventing layer>
(1) Preparation of Diffusion-Preventing Layer-Forming Solution A The components were mixed in the composition shown below and stirred in a thermostatic bath at 50°C for 1 hour to dissolve poly(methacrylic acid) (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight 100,000, δt value = 19.0), thereby preparing Diffusion-Preventing Layer-Forming Solution A.
----------------------------------------------------------------------------------
Composition of diffusion-preventing layer forming solution A ----------------------------------------------------------------
Poly(methacrylic acid)
(Fujifilm Wako Pure Chemical Industries, Ltd., weight average molecular weight 100,000) 4.0 parts by mass Pure water 60.0 parts by mass Ethanol 36.0 parts by mass

The resulting diffusion-preventing layer-forming solution A was then filtered using a filter with an absolute filtration accuracy of 5 μm (product name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

(2) Formation of Diffusion-Improving Layer The diffusion-improving layer-forming solution A after the above-mentioned filtration treatment was applied to the wavelength-selective absorption layer of the substrate 2 with a wavelength-selective absorption layer using a bar coater so that the film thickness after drying would be 1.1 μm, and the coating was dried at 120° C. for 60 seconds to prepare a substrate 3 with a diffusion-improving layer.

<3. Preparation of Laminate I>
(1) Preparation of Light-Absorbing and Disappearing Layer Forming Solution The components were mixed in the composition shown below to prepare a light-absorbing and disappearing layer forming solution (composition) Ba-1.
----------------------------------------------------------------------------------
Composition of light-absorbing and dissipative layer forming solution Ba-1
Resin 2 76.75 parts by mass Leveling agent 1 0.08 parts by mass Dye B-18 2.86 parts by mass Dye D-7 3.11 parts by mass 4-methylquinoline (Tokyo Chemical Industry Co., Ltd.) 17.2 parts by mass Tetrahydrofuran (solvent, δt value = 23.6) 566.7 parts by mass

The resulting light-absorbing, dissipative layer-forming solution Ba-1 was then filtered using filter paper (#63, manufactured by Toyo Roshi Kaisha) with an absolute filtration accuracy of 10 μm, and further filtered using a sintered metal filter (product name: Pall Filter PMF, media code: FH025, manufactured by Pall Corporation) with an absolute filtration accuracy of 2.5 μm.

(2) Preparation of Laminate I The above-mentioned filtered light-absorbing and dissipating layer-forming solution Ba-1 was applied to the diffusion-preventing layer of the diffusion-preventing layer-attached substrate 3 using a bar coater so that the film thickness after drying would be 2.2 μm, and the coating was dried at 120° C. to form a light-absorbing and dissipating layer, thereby preparing Laminate No. 101.

<4. Preparation of Laminate Having Gas Barrier Layer>
Regarding Laminate No. 101, a gas barrier layer was further laminated on the light-absorbing and dissipative layer of Laminate No. 101 in the following manner to prepare Laminate No. 101 (also referred to as "Laminate No. 101 having a gas barrier layer").

(1) Preparation of Gas Barrier Layer-Forming Solution 1 Kuraray Exeval AQ-4105 (trade name, manufactured by Kuraray Co., Ltd., modified polyvinyl alcohol, saponification degree 98 to 99 mol%) was dissolved in pure water and isopropyl alcohol by stirring for 1 hour in a thermostatic bath at 90°C, with the components adjusted to the composition ratio shown below. The solution was then cooled to room temperature, and polyethyleneimine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight approximately 10,000) was added to prepare Gas Barrier Layer-Forming Solution 1.
----------------------------------------------------------------------------------
Composition of gas barrier layer forming liquid 1 ----------------------------------------------------------------
Kuraray Exeval AQ-4105 (product name, manufactured by Kuraray Co., Ltd.) 3.6 parts by mass Polyethyleneimine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight approximately 10,000) 0.4 parts by mass Pure water 88.5 parts by mass Isopropyl alcohol 7.5 parts by mass

The resulting gas barrier layer forming solution 1 was then filtered using a filter with an absolute filtration accuracy of 5 μm (product name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

(2) Lamination of Gas Barrier Layer 1 The filtered gas barrier layer-forming solution 1 was applied to the light-absorbing and disappearing layer side of the laminate using a bar coater so that the film thickness after drying would be 0.6 μm, and the laminate was dried at 120° C. for 60 seconds to prepare Laminate No. 101 having a gas barrier layer.
This gas barrier layer-containing laminate No. 101 has a configuration in which a substrate 1, a wavelength selective absorption layer, a diffusion-preventing layer, a light absorbing and disappearing layer, and a gas barrier layer 1 are laminated in this order.

[Preparation of Laminates Nos. 102 to 104 and c201 to c202 Having Gas Barrier Layer]
Laminates Nos. 102 to 104 and c201 to c202 each having a gas barrier layer were prepared in the same manner as in the preparation of laminate No. 101 having a gas barrier layer, except that in the preparation of laminate No. 101 having a gas barrier layer, at least one of the amount of each dye added in the light-absorbing and disappearing layer and the amount of each dye added in the wavelength-selective absorption layer was changed to the value shown in Table 1.
In producing laminates Nos. 102 to 104 and c201 to c202 each having a gas barrier layer, the amount of resin 1 was adjusted in accordance with the change in the amount of dye blended, while keeping the mass of the wavelength-selective absorption layer constant, and the amount of resin 2 was adjusted in accordance with the change in the amount of dye blended, while keeping the mass of the light-absorbing and disappearing layer constant.

[Preparation of Laminate No. r301 Having a Gas Barrier Layer]
A laminate No. r301 having a gas barrier layer was prepared in the same manner as in the preparation of the laminate No. 101 having a gas barrier layer, except that in the preparation of the laminate No. 101 having a gas barrier layer, dyes A-321, 7-23, C-122, and H-1 were removed from the wavelength-selective absorption layer-forming solution, and further, dyes B-18 and D-7, and 4-methylquinoline were removed from the light-absorbing and disappearing layer-forming solution.

(Table notes)
The blending amounts of the dye in the wavelength selective absorption layer and the light absorbing and dissipating layer refer to parts by mass of the dye in 100 parts by mass of the wavelength selective absorption layer and parts by mass of the dye in 100 parts by mass of the light absorbing and dissipating layer, respectively.
The unit of thickness of the wavelength selective absorption layer and the thickness of the light absorbing and disappearing layer is both μm.

<Simulation of an OLED display device equipped with a light-transmitting/absorbent filter I>
Using the laminates Nos. 101 to 104, c201 to c202, and r301 having the gas barrier layer prepared above, a simulation of an OLED display device having a laminate (light transmission-absorption filter I) having, from the viewer side, a layer obtained by mask exposure of the light-absorbing and disappearing layer and a wavelength-selective absorption layer in this order was carried out as follows.

[Measurement of absorbance at first and second sites]
(1) Measurement of absorbance Using a UV3600 spectrophotometer (trade name) manufactured by Shimadzu Corporation, the absorbance of a measurement sample cut into a size of 40 mm length x 40 mm width was measured in 1 nm increments in the wavelength range of 380 to 780 nm.
The absorbance of the second region was measured using the laminate having the gas barrier layer prepared above as a measurement sample.
Furthermore, the absorbance of the first portion was measured using the laminate obtained by carrying out the following ultraviolet irradiation test without patterning the laminate having the gas barrier layer produced above as a measurement sample.
(Ultraviolet irradiation test)
Under atmospheric pressure (101.33 kPa), the laminate having the gas barrier layer was irradiated with ultraviolet (UV) rays at an illuminance of 100 mW/cm ² and an exposure dose of 2000 mJ/cm ² from the gas barrier layer side (the side opposite to the substrate 1) using an ultra-high pressure mercury lamp (manufactured by HOYA Corporation, product name: UL750) on a hot plate at 45°C.

(2) Calculation of Absorbance Using the absorbance values Ab _x (λ) at each wavelength λ nm of the first portion and the second portion measured in (1) above and the absorbance value Ab ₀ (λ) at each wavelength λ nm of Laminate No. r301 containing the same resin but no dye, the absorbance Ab(λ) of the first portion and the second portion was calculated according to the following formula:
Ab (λ) = Ab _x (λ) - Ab ₀ (λ)

Among the absorbances Ab(λ) of the first and second portions in the wavelength range of 380 to 780 nm, the wavelength showing the largest absorbance Ab(λ) among the wavelengths showing maximum absorption was defined as the maximum absorption wavelength (hereinafter also simply referred to as "λ _max "), and the absorbance at this λ _max was defined as the maximum absorption value (hereinafter also simply referred to as "Ab(λ _max )"). The Ab(λ _max ) of each of the obtained dyes is described in the above description of the dye or together with the chemical structure of the above dye.

[Transmittance Simulation of First and Second Regions]
The transmittance in the wavelength range of 380 to 780 nm was calculated using the absorption spectrum obtained from the absorbance Ab(λ) of the first and second regions.
The obtained transmittance in the wavelength range of 380 to 780 nm was multiplied by the photopic standard relative luminosity factor and summed (luminosity correction) to calculate the color (a ^* , b ^* ) of the transmitted light.

[Measurement of Reflection Spectrum of OLED Substrate]
The reflectance spectrum of the OLED substrate was measured using an OLED display device from which anti-reflection layers, such as a circular polarizer, color filter, and black matrix, which are present on the viewer's side of the OLED light-emitting layer, had been removed (details will be described later). For the obtained OLED substrate, the reflectance at each wavelength of each pixel, which is the light-emitting portion, and the reflectance at each wavelength of the substrate, thin metal wires, and black bank (black partition wall), which are non-light-emitting portions, were measured using a conventional microspectroscopy method. The reflectance was calculated as the relative reflectance to the reflectance of a silver mirror with a protective film.

[Simulation of Reflection Spectrum]
The simulation of the reflection spectrum was carried out for each part, divided into a light-emitting part and a non-light-emitting part.
(1) Reflectance of Light-Emitting Section The reflection spectrum R _x (λ) of the light-emitting section was calculated by the following formula using the reflection spectrum R _x0 (λ) of the light-emitting section of the OLED substrate measured by microspectroscopy, the transmission spectrum T ₁ (λ) of the first section, and the surface reflectance R _S. Note that the surface reflectance R _S is the surface reflectance of the laminate of transparent members on the surface side (viewer side) of the first section, and specifically means the surface reflectance of the gas barrier layer. (x can be a blue pixel (B), a green pixel (G), a red pixel (R), etc.)
R _x (λ) = R _x0 (λ) x T ₁ (λ) ² + R _S
(2) Reflectance of Non-Emitting Portion The reflection spectrum R _y (λ) of the non-emitting portion was calculated by the following formula using the reflection spectrum R _y0 (λ) of the non-emitting portion of the OLED substrate measured by microspectroscopy, the transmission spectrum T ₂ (λ) of the second portion, and the surface reflectance R _S. Note that the surface reflectance R _S is the surface reflectance of the laminate of transparent members on the surface side (viewer side) of the second portion, and specifically means the surface reflectance of the gas barrier layer.
R _y (λ)=R _y0 (λ)×T ₂ (λ) ² +R _S
(3) Average Reflectance The reflectance spectrum of the entire display device was calculated as the sum of the reflectance spectrum R _x (λ) of the light-emitting portion and the reflectance spectrum R _y (λ) of the non-light-emitting portion calculated above, multiplied by the area ratio of each portion. The resulting reflectance spectrum was then multiplied by the CIE standard illuminant D65 spectrum and the photopic standard relative luminosity factor to obtain the sum (luminosity correction), thereby calculating the luminosity-corrected reflectance Y (hereinafter simply referred to as "reflectance") and the color (a ^* , b ^* ) of the reflected light.
In this simulation, a commercially available smartphone, iPhone (registered trademark) 14 Pro (trade name, manufactured by Apple Inc.), was used as the OLED substrate, and the OLED light-emitting layer was peeled off from the touch sensor layer, and the layer above the touch sensor layer (on the viewer's side) was removed. The area ratio of the light-emitting portion (each color light-emitting portion of BGR) and the non-light-emitting portion of the iPhone (registered trademark) 14 Pro was calculated as B (blue):G (green):R (red):non-light-emitting portion = 15:10:5:70.

The results are summarized in Table 2.
Note that Nos. 101 to 104 are simulation results for the light transmission-absorption filter of the present invention, performed using the transmittance simulation results for the first and second regions obtained using the laminate Nos. 101 to 104 prepared above. Nos. c201 and c202 are simulation results for a light transmission-absorption filter for comparison, performed using the transmittance simulation results for the first and second regions obtained using the laminate Nos. c201 and c202 prepared above.

(Table notes)
In the columns for the first and second regions of color, the a ^* and b ^* of transmitted light are entered.

As shown in Table 2, the light transmission-absorption filters No. c201 and c202 do not satisfy the requirements of the present invention in that the signs of the values in the first region and the second region for ^{a *} and b ^* in the L*a ^* b ^* color space of transmitted light are not reversed. Of these, the light transmission-absorption filter No. c201 had a high reflectance of 8.9%, failing to suppress external light reflection, while the light transmission-absorption filter No. c202 had a high a ^* value for reflected light, failing to adjust the reflected color to a neutral tone.
In contrast, the light transmission-absorption filters Nos. 101 to 104 are light transmission-absorption filters that ensure the desired transmittance of display light when incorporated into a display device, have a reflectance as low as 6.7% or less, can achieve a high level of suppression of external light reflection, and furthermore, a ^* and b ^* of the reflected light are within the range of −2.8 to 6.3, and a ^* and b ^* of the display light (first portion and second portion) are within the range of −9.3 to 28.0, making it possible to adjust both the color of the reflected light and the color of the display light to a neutral color.

<<Preparation of Laminate II Including Wavelength-Selective Absorption Layer and Laminate Pre-III Including Light-Absorbing Disappearing Layer>>
Example 2
[Preparation of Substrate-Attached Wavelength-Selective Absorption Filter No. 501 (Laminate II)]
<1. Preparation of wavelength-selective absorption layer forming liquid 11>
The components were mixed in the composition shown below to prepare a wavelength selective absorption layer forming solution 11.
----------------------------------------------------------------------------------
Composition of wavelength selective absorption layer forming liquid 11
Resin 3 14.8 parts by mass Resin 4 78.4 parts by mass Adhesion improver 1 0.9 parts by mass Dye J-1 4.1 parts by mass Dye I-2 1.8 parts by mass Toluene (solvent) 693.0 parts by mass Cyclohexanone (solvent) 99.0 parts by mass Isopropanol (solvent) 198.0 parts by mass

The resulting wavelength-selective absorption layer forming liquid 11 was then filtered using filter paper (#63, manufactured by Toyo Roshi Kaisha) with an absolute filtration accuracy of 10 μm, and further filtered using a sintered metal filter (product name: Pall Filter PMF, media code: FH025, manufactured by Pall Corporation) with an absolute filtration accuracy of 2.5 μm.

<2. Preparation of wavelength-selective absorption layer forming liquid 12>
The components were mixed in the composition shown below to prepare a wavelength selective absorption layer forming solution 12.
----------------------------------------------------------------------------------
Composition of wavelength selective absorption layer forming liquid 12
Resin 5 82.1 parts by mass Leveling agent 1 0.16 parts by mass Adhesion improver 2 9.25 parts by mass Dye 7-23 1.5 parts by mass Dye H-1 6.0 parts by mass Toluene (solvent) 601.3 parts by mass Cyclohexanone (solvent) 66.0 parts by mass Isopropanol (solvent) 66.0 parts by mass

Subsequently, the obtained wavelength-selective absorption layer forming liquid 12 was filtered in the same manner as wavelength-selective absorption layer forming liquid 11.

<3. Preparation of gas barrier layer-forming liquid 2>
Kuraray Exeval AQ-4104 (trade name, manufactured by Kuraray Co., Ltd., modified polyvinyl alcohol, saponification degree 98 to 99 mol%) was dissolved in pure water and isopropyl alcohol by stirring for 1 hour in a thermostatic bath at 90°C, with the components adjusted to the composition ratio shown below. The solution was then cooled to room temperature, and Epomin P-1000 (trade name, manufactured by Nippon Shokubai Co., Ltd., 30% by mass solution of polyethyleneimine, weight average molecular weight approximately 70,000) was added to prepare gas barrier layer-forming solution 2.
----------------------------------------------------------------------------------
Composition of gas barrier layer forming liquid 2 -------------------------------------------------
3.8 parts by mass of Kuraray Exeval AQ-4104 (trade name, manufactured by Kuraray Co., Ltd.) Epomin P-1000 (trade name, manufactured by Nippon Shokubai Co., Ltd.)
(Indicating the amount of polyethyleneimine itself) 0.2 parts by mass Pure water 88.5 parts by mass Isopropyl alcohol 7.5 parts by mass

The resulting gas barrier layer-forming solution 2 was then filtered using a filter with an absolute filtration accuracy of 5 μm (product name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

<4. Preparation of wavelength-selective absorption filter No. 501 with substrate>
The filtered wavelength-selective absorption layer-forming liquid 11 was applied to a substrate 11 using a bar coater so that the film thickness after drying would be 2.0 μm, and the applied film was dried at 130° C. to form a substrate-attached first wavelength-selective absorption layer 11. Thereafter, the filtered gas-barrier layer-forming liquid 2 was applied to the first wavelength-selective absorption layer using a bar coater so that the film thickness after drying would be 0.4 μm, and the applied film was dried at 130° C. to form a gas-barrier layer 2. Furthermore, the filtered wavelength-selective absorption layer-forming liquid 12 was applied to the gas-barrier layer 2 using a bar coater so that the film thickness after drying would be 2.0 μm, and the applied film was dried at 130° C. to form a substrate-attached wavelength-selective absorption filter No. 501 (laminate II).

[Preparation of Substrate-Attached Light-Absorbing and Dissipating Filter No. 601]
<1. Preparation of substrate 22 with diffusion-preventing layer>
(1) Preparation of Diffusion-Preventing Layer-Forming Solution B The components were mixed in the composition shown below and stirred in a thermostatic bath at 50°C for 1 hour to dissolve poly(methacrylic acid) (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight 100,000, δt value = 19.0), thereby preparing Diffusion-Preventing Layer-Forming Solution B.
----------------------------------------------------------------------------------
Composition of diffusion-preventing layer forming solution B ----------------------------------------------------------------
Poly(methacrylic acid)
(Fujifilm Wako Pure Chemical Industries, Ltd., weight average molecular weight 100,000) 4.0 parts by mass Pure water 60.0 parts by mass Ethanol 36.0 parts by mass

The resulting diffusion-preventing layer-forming solution B was then filtered using a filter with an absolute filtration accuracy of 5 μm (product name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

(2) Formation of diffusion-preventing layer The diffusion-preventing layer-forming solution B after the above-mentioned filtration treatment was applied to the substrate 21 using a bar coater so that the film thickness after drying would be 0.9 μm, and then dried at 120° C. for 60 seconds to produce a substrate 22 with a diffusion-preventing layer.

<2. Preparation of Substrate-Attached Light-Absorbing and Dissipative Filter No. 601>

(1) Preparation of Light-Absorbing and Disappearing Layer Forming Solution The components were mixed in the composition shown below to prepare a light-absorbing and disappearing layer forming solution (composition) Ba-2.
----------------------------------------------------------------------------------
Composition of light-absorbing and dissipative layer forming solution Ba-2
Resin 2 79.25 parts by mass Leveling agent 1 0.08 parts by mass Dye B-18 1.79 parts by mass Dye D-7 1.68 parts by mass 4-methylquinoline (Tokyo Chemical Industry Co., Ltd.) 17.2 parts by mass Tetrahydrofuran (solvent, δt value = 23.6) 566.7 parts by mass

The resulting light-absorbing, dissipative layer-forming solution Ba-2 was then filtered using filter paper (#63, manufactured by Toyo Roshi Kaisha) with an absolute filtration accuracy of 10 μm, and further filtered using a sintered metal filter (product name: Pall Filter PMF, media code: FH025, manufactured by Pall Corporation) with an absolute filtration accuracy of 2.5 μm.

(2) Preparation of substrate-attached light-absorbing and dissipating filter No. 601 The light-absorbing and dissipating layer-forming solution Ba-2 after the filtration process was applied using a bar coater onto the diffusion-preventing layer of the diffusion-preventing layer-attached substrate 22 so that the film thickness after drying would be 2.5 μm, and the applied solution was dried at 120° C. to form a light-absorbing and dissipating layer, thereby preparing substrate-attached light-absorbing and dissipating filter No. 601.

<3. Preparation of Light-Absorbing and Dissipating Filter Having a Gas Barrier Layer (Laminate Pre-III)>
For the substrate-attached light-absorbing and dissipating filter No. 601, a gas barrier layer was further laminated on the light-absorbing and dissipating layer in the following manner to prepare a laminate pre-III.

(1) Preparation of Gas Barrier Layer-Forming Solution 3 Kuraray Exeval AQ-4104 (trade name, manufactured by Kuraray Co., Ltd., modified polyvinyl alcohol, saponification degree 98 to 99 mol%) was dissolved in pure water and isopropyl alcohol by stirring for 1 hour in a thermostatic bath at 90°C, and then the solution was cooled to room temperature, and polyethyleneimine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight approximately 10,000) was added to prepare Gas Barrier Layer-Forming Solution 3.
----------------------------------------------------------------------------------
Composition of gas barrier layer forming liquid 3 -------------------------------------------------
Kuraray Exeval AQ-4104 (product name, manufactured by Kuraray Co., Ltd.) 3.8 parts by mass Polyethyleneimine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight approximately 10,000) 0.2 parts by mass Pure water 88.5 parts by mass Isopropyl alcohol 7.5 parts by mass

The resulting gas barrier layer-forming solution 3 was then filtered using a filter with an absolute filtration accuracy of 5 μm (product name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

(2) Lamination of Gas Barrier Layer The gas barrier layer-forming liquid 3 after the filtration treatment was applied to the light-absorbing and dissipating layer side of substrate-attached light-absorbing and dissipating filter No. 601 using a bar coater so as to give a film thickness after drying of 0.3 μm, and the applied film was dried at 130° C. for 60 seconds to prepare light-absorbing and dissipating filter No. 601 (laminate pre-III) having a gas barrier layer.

[Transmittance Simulation of First and Second Regions]
In the same manner as in Example 1 described above, a transmittance simulation was performed for the first region and the second region of laminate No. 701, which was obtained by bonding the second wavelength-selective absorption layer 12 in laminate II and the gas barrier layer in laminate III obtained by mask-exposing the laminate pre-III, using wavelength-selective absorption filter No. 501 with a substrate (laminate II) and light-absorbing and disappearing filter No. 601 (laminate pre-III) having a gas barrier layer.
As a result, the transmittance at each wavelength of the first portion was T(460) = 65%, T(530) = 48%, T(620) = 40%, the color of the first portion was a ^* = -1.8, b ^* = -7.2, and the color of the second portion was a ^* = 6.3, b ^* = -6.3, and the first portion and the second portion satisfied a relationship in which the signs of a ^* in the L ^* a ^* b ^* color space of transmitted light were opposite. When this laminate No. 701 was incorporated into a display device, the reflectance was as low as 6.0%, achieving a high level of suppression of external light reflection. Moreover, the reflected light had a ^* = 1.4, b ^* = -4.7, and the a ^* and b ^* of the display light (first portion and second portion) were within the range of -7.2 to 6.3, and it was found that both the color of the reflected light and the color of the display light could be adjusted to a neutral color.

<Simulation of an OLED display device equipped with a light-transmitting/absorbent filter II>
Using the wavelength-selective absorption filter No. 501 (laminate II) with a substrate prepared above and light-absorbing and dissipating filter No. 601 (laminate pre-III) having a gas barrier layer, a simulation was performed as follows for an OLED display device equipped with laminate No. 701 (light-transmitting and absorbing filter II) comprising, from the viewer's side, laminate II and laminate III obtained by mask-exposing laminate pre-III, in that order.

[Measurement of absorbance at first and second sites]
(1) Measurement of absorbance Using a UV3600 spectrophotometer (trade name) manufactured by Shimadzu Corporation, the absorbance of a measurement sample cut into a size of 40 mm length x 40 mm width was measured in 1 nm increments in the wavelength range of 380 to 780 nm.
The absorbance of the second portion was measured using, as a measurement sample, the wavelength-selective absorption filter No. 501 (laminate II) with a substrate and the light-absorbing and disappearing filter No. 601 (laminate pre-III) having a gas barrier layer prepared above, and a laminate obtained by bonding the second wavelength-selective absorption layer 12 in the laminate II to the gas barrier layer in the laminate pre-III.
Furthermore, the absorbance of the first portion was measured using, as a measurement sample, a laminate obtained by bonding together Laminate III obtained by subjecting the above-prepared light-absorbing and dissipating filter No. 601 (laminate pre-III) having a gas barrier layer to the following ultraviolet irradiation test without patterning, and wavelength-selective absorption filter No. 501 (laminate II) with a substrate.
(Ultraviolet irradiation test)
Under atmospheric pressure (101.33 kPa), a light-absorbing and dissipative filter No. 601 (laminate pre-III) having a gas barrier layer was irradiated with ultraviolet (UV) rays at an illuminance of 100 mW/cm ² and an exposure dose of 2000 mJ/cm ² from the gas barrier layer side (the side opposite to the substrate 21) using an ultra-high pressure mercury lamp (manufactured by HOYA Corporation, product name: UL750) on a hot plate at 45°C.

(2) Calculation of Absorbance Using the absorbance values Ab _x (λ) at each wavelength λ nm of the first portion and the second portion measured in (1) above and the absorbance value Ab ₀ (λ) at each wavelength λ nm of Laminate No. r701 containing the same resin but no dye, the absorbance Ab(λ) of the first portion and the second portion was calculated according to the following formula:
Ab (λ) = Ab _x (λ) - Ab ₀ (λ)

Among the absorbances Ab(λ) of the first and second portions in the wavelength range of 380 to 780 nm, the wavelength showing the largest absorbance Ab(λ) among the wavelengths showing maximum absorption was defined as the maximum absorption wavelength (hereinafter also simply referred to as "λ _max "), and the absorbance at this λ _max was defined as the maximum absorption value (hereinafter also simply referred to as "Ab(λ _max )"). The Ab(λ _max ) of each of the obtained dyes is described in the above description of the dye or together with the above chemical structure of the dye.

[Transmittance Simulation of First and Second Regions]
The transmittance in the wavelength range of 380 to 780 nm was calculated using the absorption spectrum obtained from the absorbance Ab(λ) of the first and second regions.
The obtained transmittance in the wavelength range of 380 to 780 nm was multiplied by the photopic standard relative luminosity factor and summed (luminosity correction) to calculate the color (a ^* , b ^* ) of the transmitted light.

[Measurement of Reflection Spectrum of OLED Substrate]
The reflectance spectrum of the OLED substrate was measured using an OLED display device from which anti-reflection layers, such as a circular polarizer, color filter, and black matrix, which are present on the viewer's side of the OLED light-emitting layer, had been removed (details will be described later). For the obtained OLED substrate, the reflectance at each wavelength of each pixel, which is the light-emitting portion, and the reflectance at each wavelength of the substrate, thin metal wires, and black bank (black partition wall), which are non-light-emitting portions, were measured using a conventional microspectroscopy method. The reflectance was calculated as the relative reflectance to the reflectance of a silver mirror with a protective film.

[Simulation of Reflection Spectrum]
The simulation of the reflection spectrum was carried out for each part, divided into a light-emitting part and a non-light-emitting part.
(1) Reflectance of Light-Emitting Portion The reflection spectrum R _x (λ) of the light-emitting portion was calculated by the following formula using the reflection spectrum R _x0 (λ) of the light-emitting portion of the OLED substrate measured by microspectroscopy, the transmission spectrum T ₁ (λ) of the first portion, and the surface reflectance R _S. Note that the surface reflectance R _S is the surface reflectance of the laminate of transparent members on the surface side (viewer side) of the first portion, and specifically means the surface reflectance of the substrate 11. (x can be a blue pixel (B), a green pixel (G), a red pixel (R), etc.)
R _x (λ) = R _x0 (λ) x T ₁ (λ) ² + R _S
(2) Reflectance of Non-Emitting Portion The reflection spectrum R _y (λ) of the non-emitting portion was calculated by the following formula using the reflection spectrum R _y0 (λ) of the non-emitting portion of the OLED substrate measured by microspectroscopy, the transmission spectrum T ₂ (λ) of the second portion, and the surface reflectance R _S. Note that the surface reflectance R _S is the surface reflectance of the laminate of transparent members on the surface side (viewer side) of the second portion, and specifically means the surface reflectance of the substrate 11.
R _y (λ)=R _y0 (λ)×T ₂ (λ) ² +R _S
(3) Average Reflectance The reflectance spectrum of the entire display device was calculated as the sum of the reflectance spectrum R _x (λ) of the light-emitting portion and the reflectance spectrum R _y (λ) of the non-light-emitting portion calculated above, multiplied by the area ratio of each portion. The resulting reflectance spectrum was then multiplied by the CIE standard illuminant D65 spectrum and the photopic standard relative luminosity factor to obtain the sum (luminosity correction), thereby calculating the luminosity-corrected reflectance Y (hereinafter simply referred to as "reflectance") and the color (a ^* , b ^* ) of the reflected light.
In this simulation, a commercially available smartphone, Galaxy Z Fold3 (product name, manufactured by Samsung Electronics), was used as the OLED substrate. The OLED light-emitting layer was separated from the color filter layer, and the layer above the color filter layer (on the viewer's side) was removed. The area ratio of the light-emitting portion (each color light-emitting portion of BGR) and the non-light-emitting portion of the Galaxy Z Fold3 (product name) was calculated as B (blue): G (green): R (red): non-light-emitting portion = 5.4: 6.9: 3.8: 84. Furthermore, the brightness of the Galaxy Z Fold3 (product name) at a polar angle of 60° was 20% of the brightness (100%) at the front (polar angle of 0°).

(4) Change in color of display light due to viewing angle and relative brightness The color of the display light was measured for B, G, R and white display using a spectroradiometer SR-UL1 (trade name, manufactured by Techno Optis Co., Ltd.) with the emission spectra at a polar angle of 0° and an azimuth angle of 0° as B ₀ (λ), G ₀ (λ), R _{0 (} λ) and W ₀ (λ), respectively, and the emission spectra at a polar angle of 60° and an azimuth angle of 0° as B ₆₀ (λ), G 60 (λ), R ₆₀ (λ) and W ₆₀ (λ), respectively.
The ratio of overlap between the first portion and the light emitted from the light-emitting portion relative to the area of the light-emitting portion when observed from infinity at a polar angle of 60° was defined as RO ₆₀ , and the RO _60s for the B pixel, G pixel, and R pixel were defined as RO _B60 , RO _G60 , and RO _R60 , respectively. Using RO _B60 , RO _G60 , and RO _R60 , the emission spectrum E _x60 (λ) (x represents the B pixel (B), G pixel (G), or R pixel (G)) at a polar angle of 60° was determined for each of B, G, and R using the following formula, and the resulting emission spectra E _x60 (λ) for B, G, and R at a polar angle of 60° were summed in the same ratio as the B/G/R ratio during white display to calculate the luminosity-corrected luminance Y (hereinafter also simply referred to as "luminance") and whiteness (x, y) at a polar angle of 60° when a light-absorbing filter II (light-absorbing disappearing layer) was used.

E _B60 (λ) = B ₆₀ (λ) x T ₁ (λ) x RO _B60 + B ₆₀ (λ) x T ₂ (λ) x (1-RO _B60 )
E _G60 (λ) = G ₆₀ (λ) x T ₁ (λ) x RO _G60 + G ₆₀ (λ) x T ₂ (λ) x (1-RO _G60 )
E _R60 (λ) = R ₆₀ (λ) x T ₁ (λ) x RO _R60 + R ₆₀ (λ) x T ₂ (λ) x (1-RO _R60 )

RO ₆₀ was calculated geometrically from the distance between the light-emitting section and the light-absorbing and dissipative layer and the diameter of the light-emitting section and the first section when the sizes of the light-emitting section and the first section and their positions when viewed from the front are exactly the same (i.e., when "Sf/S" in the above formula (2) is 1). The angle of the display light with a polar angle of 60° inside the display device was calculated as approximately 33° based on Snell's law.

The results are summarized in Table 3.
Among the display devices using the laminate No. 701 (light transmission/absorption filter II), Nos. 801 to 806 are examples, and Nos. r901 and r902 are reference examples.

(Table notes)
The "distance" is the distance (distance d) in the film thickness direction between the light-emitting portion (light-emitting element layer) of the OLED substrate and the light-absorbing and dissipating layer.
The "B pixel distance ratio" is the value (d/√S B ) obtained by dividing the distance d between the light-absorbing and disappearing layer in the first light-transmitting and absorbing portion and the light-emitting element layer by the square root of the average area S _B of each blue light-emitting element that constitutes the light-emitting element layer, and the "G pixel distance ratio" is the value (d/√S _G ) obtained by dividing the distance d between the light-absorbing and disappearing layer in the first light-transmitting and absorbing portion and the light-emitting element layer by the square root of the average area S _G of each _green light-emitting element that constitutes the light-emitting element layer.
It should be noted that the above evaluation is merely a simulation, and therefore the "distance d" used in calculating the "distance" and the "B pixel distance ratio" and "G pixel distance ratio" is shorter than the film thickness of the substrate 21 and diffusion-preventing layer of the laminate III obtained by mask-exposing the laminate pre-III.
The "relative luminance" is the luminance at a polar angle of 60° and an azimuth angle of 0°, and is a relative value when the light-absorbing filter II (light-absorbing disappearing layer) is used, with the value when the light-absorbing filter II (light-absorbing disappearing layer) is not used being taken as 100.
The "color change" is the distance (Δxy) between the whiteness at a polar angle of 0° and an azimuth angle of 0° when displaying white, and the whiteness at a polar angle of 60° and an azimuth angle of 0° when comparing the two whitenesses on an xy chromaticity diagram, and is a value calculated using the following formula.

x ₀ and y ₀ are respectively x and y on the xy chromaticity diagram of white at a polar angle of 0° and an azimuth angle of 0°, and x ₆₀ and y ₆₀ are respectively x and y on the xy chromaticity diagram of white at a polar angle of 60° and an azimuth angle of 0°.

The results in Table 3 show that the display devices of Example Nos. 801 to 806, in which the light transmission-absorption filters of the present invention are arranged so that the distance ratios of the OLED display elements (B pixel distance ratio (d/√S _B ) and G pixel distance ratio (d/√S _G )) are in the range of 1.0 to 7.0, are preferable because they are able to achieve a high level of both improved luminance and suppressed color shift due to viewing angle, compared to the display devices of Reference Examples Nos. r901 and r902, in which the OLED display elements are arranged so that the distance ratios are outside the above range.

Although the present invention has been described in conjunction with its embodiments, we do not intend to limit our invention to any of the details of the description unless otherwise specified, and believe that the appended claims should be interpreted broadly without departing from the spirit and scope of the invention as set forth in the appended claims.

This application claims priority based on Japanese Patent Application No. 2024-131811, filed in Japan on August 8, 2024, and Japanese Patent Application No. 2025-124623, filed in Japan on July 25, 2025, the contents of which are incorporated herein by reference.

1. First section (first light transmitting/absorbing section)
2. Second region (second light transmitting/absorbing region)
3: Wavelength-selective absorption layer exposed with a mask 4: Light-absorbing and decolorizable layer exposed with a mask 5: Light-absorbing disappearance portion 6: Light-absorbing portion 7: Light-emitting portion of display element 8: Non-light-emitting portion of display element 10: Light-transmitting and absorbing filter I

Claims (8)

having a first light-transmitting-absorbing portion and a second light-transmitting-absorbing portion;
the transmittance T(460) at a wavelength of 460 nm, the transmittance T(530) at a wavelength of 530 nm, and the transmittance T(620) at a wavelength of 620 nm of the first light transmitting/absorbing site each satisfy the following relationships:
A light-transmitting-absorbing filter in which the first light-transmitting-absorbing portion and the second light-transmitting-absorbing portion satisfy a relationship in which the sign of at least one of the values a ^* and b ^* in the L ^* a ^* b ^* color space of transmitted light is opposite.
T(460)≧30%
T(530)≧40%
T(620)≧30% 2. The light transmission-absorption filter according to claim 1, wherein a ^* and b ^* of the transmitted light of the first light transmission-absorption site satisfy the following relationship:
−20.0≦a ^* ≦+20.0
−20.0≦b ^* ≦+20.0 The light-transmitting-absorbing filter described in claim 1, comprising two or more layers with different light-absorbing and transmitting properties. An organic electroluminescent display element comprising the light-transmitting/absorbing filter of claim 1. the light transmission-absorption filter comprises a laminate II including a wavelength-selective absorption layer and a laminate III obtained by mask-exposing a laminate including a light-absorbing and disappearing layer to ultraviolet light irradiation,
the organic electroluminescence display element is formed by arranging the laminate II, the laminate III, and a light-emitting element layer in this order,
5. The organic electroluminescent display element according to claim 4, wherein a distance d between the laminate III and the light-emitting element layer, an average area S of each light-emitting element constituting the light-emitting element layer, and an average area Sf of the first light-transmitting/absorbing portion located directly above each light-emitting element satisfy the relationships of the following formulas (1) and (2):
Formula (1) 0.6≦d/√S≦7.5
Formula (2) 0.7≦Sf/S≦1.5 the light transmission-absorption filter comprises a laminate II including a wavelength-selective absorption layer and a laminate III obtained by mask-exposing a laminate including a light-absorbing and disappearing layer to ultraviolet light irradiation,
the organic electroluminescence display element is configured by arranging the laminate II, the laminate III, and a light-emitting element layer in this order,
5. The organic electroluminescent display element according to claim 4, wherein a distance d between the laminate III and the light-emitting element layer, an average area S _B of each blue light-emitting element constituting the light-emitting element layer, and an average area Sf _B of a portion of the first light-transmitting and absorbing site located directly above each blue light-emitting element satisfy the relationships of the following formulas (3) and (4):
Formula (3) 1.0≦d/√S _B ≦7.0
Formula (4) 0.8≦Sf _B /S _B ≦1.2 the light transmission-absorption filter comprises a laminate II including a wavelength-selective absorption layer and a laminate III obtained by mask-exposing a laminate including a light-absorbing and disappearing layer to ultraviolet light irradiation,
the organic electroluminescence display element is formed by arranging the laminate II, the laminate III, and a light-emitting element layer in this order,
5. The organic electroluminescent display element according to claim 4, wherein a distance d between the laminate III and the light-emitting element layer, an average area S _G of each green light-emitting element constituting the light-emitting element layer, and an average area Sf _G of a portion of the first light-transmitting and absorbing site located directly above each green light-emitting element satisfy the relationships of the following formulas (5) and (6):
Formula (5) 1.0≦d/ _√SG ≦7.0
Formula (6) 0.8≦Sf _G /S _G ≦1.2 An organic electroluminescent display device comprising the light-transmitting/absorbing filter described in any one of claims 1 to 3 or the organic electroluminescent display element described in any one of claims 4 to 7.