WO2024252856A1 - Display device and electronic device - Google Patents

Abstract

The present invention provides a display device capable of improving viewing angle characteristics.　The display device comprises a plurality of first pixels capable of emitting light of a first color, and a plurality of second pixels capable of emitting light of a second color. The plurality of second pixels constitute a plurality of columns. The column of the second pixels includes: a plurality of first light emitting elements arranged in the column direction of the column of the second pixels; a first filter part provided on the upper side of the plurality of first light emitting elements and having a second color; and a plurality of second filter parts that are provided on the upper side of the plurality of first light emitting elements and at each boundary part between the second pixels adjacent to each other in the column direction and have a color different from the second color.

Description

Display devices and electronic devices

This disclosure relates to a display device and an electronic device equipped with the same.

In recent years, there has been a demand for technology to improve the viewing angle characteristics of display devices. For example, Patent Document 1 describes that a display device in which the first, second, and third subpixels are arranged in a square has the problem that the viewing angle characteristics deteriorate due to differences in aperture ratio. Patent Document 1 also describes that, in order to solve this problem, the viewing angle of the third subpixel is limited by a black matrix (light-shielding portion).

JP 2015-146304 A

As mentioned above, in recent years there has been a demand for technology to improve the viewing angle characteristics of display devices.

The purpose of this disclosure is to provide a display device that can improve viewing angle characteristics and an electronic device equipped with the same.

In order to solve the above problems, a display device according to a first aspect of the present disclosure includes:
a plurality of first pixels capable of emitting light of a first color;
a plurality of second pixels capable of emitting light of a second color;
The second pixels are arranged in a plurality of columns,
The second column of pixels is
A plurality of first light-emitting elements arranged in a column direction of a column of second pixels;
a first filter portion provided above the first light-emitting elements and having a second color;
a plurality of second filter portions having a color different from the second color, the second filter portions being provided above the plurality of first light-emitting elements and at each boundary between adjacent second pixels in the column direction.

A display device according to a second aspect of the present disclosure includes:
a plurality of first pixels capable of emitting light of a first color;
a plurality of second pixels capable of emitting light of a second color;
The second pixels are arranged in a plurality of columns,
The second column of pixels is
A plurality of first light-emitting elements arranged in a column direction of a column of second pixels;
a color conversion unit provided above the first light-emitting elements and capable of converting light emitted from the first light-emitting elements into light of a second color;
a filter portion provided above the plurality of first light-emitting elements and at a boundary portion between adjacent second pixels in the column direction, the filter portion having a color different from the second color.

An electronic device according to one aspect of the present disclosure includes a display device according to the first aspect of the present disclosure or a display device according to the second aspect of the present disclosure.

FIG. 1 is a plan view of sub-pixels arranged in a stripe pattern. FIG. 2 is a plan view of the display device according to the first embodiment. FIG. 3 is an enlarged plan view showing a part of the effective pixel region of FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a plan view of sub-pixels arranged in a square shape. FIG. 8 is an enlarged plan view showing a part of an effective pixel region of the display device according to the second embodiment. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. FIG. 10 is a cross-sectional view taken along line XX in FIG. FIG. 11 is an enlarged plan view showing a part of the effective pixel region. FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. FIG. 13 is an enlarged plan view showing a part of the effective pixel region. FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG. FIG. 15 is an enlarged plan view showing a part of the effective pixel region. FIG. 16 is an enlarged plan view showing a part of the effective pixel region. FIG. 17 is an enlarged cross-sectional view of the effective pixel region. FIG. 18 is an enlarged cross-sectional view of the effective pixel region. FIG. 19 is an enlarged cross-sectional view of the effective pixel region. FIG. 20 is an enlarged cross-sectional view of the effective pixel region. FIG. 21 is an enlarged cross-sectional view of the effective pixel region. FIG. 22 is an enlarged cross-sectional view (XZ cross-sectional view) of the effective pixel area. FIG. 23 is an enlarged cross-sectional view (YZ cross-sectional view) of the effective pixel region. Fig. 24A is a schematic diagram of an analytical model of Simulation 1. Fig. 24B is a schematic diagram of an analytical model of Simulation 2. Fig. 24C is a schematic diagram of an analytical model of Simulation 3. Fig. 24D is a schematic diagram of an analytical model of Simulation 4. FIG. 25 is a graph showing the results of simulations 1 to 4. 26A, 26B, and 26C are conceptual diagrams for explaining the relationship between a normal line LN passing through the center of the light-emitting portion, a normal line LN' passing through the center of the lens member, and a normal line LN" passing through the center of the wavelength selection portion, respectively. FIG. 27 is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting portion, a normal line LN' passing through the center of the lens member, and a normal line LN" passing through the center of the wavelength selecting portion. 28A and 28B are conceptual diagrams for explaining the relationship between a normal line LN passing through the center of the light-emitting portion, a normal line LN' passing through the center of the lens member, and a normal line LN" passing through the center of the wavelength selection portion, respectively. FIG. 29 is a conceptual diagram for explaining the relationship between a normal line LN passing through the center of the light emitting portion, a normal line LN' passing through the center of the lens member, and a normal line LN" passing through the center of the wavelength selecting portion. Fig. 30A is a schematic cross-sectional view for explaining a first example of a resonator structure, and Fig. 30B is a schematic cross-sectional view for explaining a second example of a resonator structure. Fig. 31A is a schematic cross-sectional view for explaining a third example of the resonator structure, and Fig. 31B is a schematic cross-sectional view for explaining a fourth example of the resonator structure. 32A and 32B are schematic cross-sectional views for explaining a fifth example of the resonator structure and a sixth example of the resonator structure, respectively. FIG. 33 is a schematic cross-sectional view for explaining a seventh example of the resonator structure. 34A and 34B are front and rear views of the digital still camera. FIG. 35 is a perspective view of a head mounted display. FIG. 36 is a perspective view of a television device. FIG. 37 is a perspective view of a see-through head mounted display. FIG. 38 is a perspective view of a smartphone. Fig. 39A is a diagram showing the interior of the vehicle from the rear to the front, and Fig. 39B is a diagram showing the interior of the vehicle from the diagonally rear to the diagonally front.

The embodiments of the present disclosure will be described in the following order.
1. General Description of Display Devices According to the First and Second Aspects of the Present Disclosure 2. First Embodiment (Example of Display Device)
3. Second embodiment (example of display device)
4 Modifications 5 Simulation 6 Relationship between normals passing through the centers of the light emitting portion, the lens member, and the wavelength selecting portion 7 Example of resonator structure 8 Application example (example of electronic device)
The embodiments and the like described below are preferred specific examples of the present disclosure, and the contents of the present disclosure are not limited to these embodiments and the like. In the following description, the same reference numerals are used for components having substantially the same functional configurations, and duplicated descriptions are omitted as appropriate. In addition, in order to prevent the illustrations from becoming complicated, reference numerals may be used only for some components, or the illustrations may be simplified or enlarged or reduced.

<1 General Description of Display Devices According to the First and Second Aspects of the Present Disclosure>
A display device according to a first aspect of the present disclosure comprises a plurality of first pixels capable of emitting light of a first color and a plurality of second pixels capable of emitting light of a second color, the plurality of second pixels being arranged in a plurality of columns, and the columns of second pixels include a plurality of first light-emitting elements aligned in a column direction of the column of second pixels, a first filter section having a second color and provided above the plurality of first light-emitting elements, and a plurality of second filter sections having a color different from the second color and provided above the plurality of first light-emitting elements and at each boundary between adjacent second pixels in the column direction.

In the display device according to the first aspect of the present disclosure, a second filter section having a color different from the second color is provided at each boundary between adjacent second pixels in the column direction, so that at least a portion of the light emitted from the first light-emitting element toward the boundary can be absorbed by the second filter section. This narrows the viewing angle of the second pixel in the column direction, and suppresses the difference in viewing angle characteristics between the first pixel and the second pixel. Therefore, it is possible to suppress the occurrence of a difference in color between an image viewed from the front direction and an image viewed obliquely from the column direction. This makes it possible to improve the viewing angle characteristics in the column direction.

The display device according to the second aspect of the present disclosure includes a plurality of first pixels capable of emitting light of a first color and a plurality of second pixels capable of emitting light of a second color, the plurality of second pixels being arranged in a plurality of columns, and the columns of the second pixels include a plurality of first light-emitting elements aligned in the column direction of the columns of the second pixels, a color conversion unit provided above the plurality of first light-emitting elements and capable of converting light emitted from the plurality of first light-emitting elements into light of the second color, and a plurality of filter units provided above the plurality of first light-emitting elements and at each boundary between adjacent second pixels in the column direction, and having a color different from the second color.

In a display device according to a second aspect of the present disclosure, a filter section having a color different from the second color is provided at each boundary between second pixels adjacent in the column direction. This allows at least a portion of the light emitted from the light-emitting element toward the boundary to be absorbed by the filter section. This narrows the viewing angle of the second pixel in the column direction, and suppresses the difference in viewing angle characteristics between the first pixel and the second pixel. This makes it possible to suppress the occurrence of differences in color between an image viewed from the front direction and an image viewed obliquely from the column direction. This makes it possible to improve the viewing angle characteristics in the column direction.

In the display devices according to the first and second aspects of the present disclosure, the column direction of the columns of second pixels may be any direction within the plane of the display surface of the display device, and may be, for example, the vertical or horizontal direction of the display surface of the display device. The column direction of the columns of second pixels refers to the direction in which the columns of second pixels extend.

In the display device according to the first aspect of the present disclosure, the second filter section may be provided on the first filter section or may be provided within the first filter section. When the second filter section is provided within the first filter section, the thickness of the second filter section may be substantially the same as the thickness of the first filter section. When the second filter section is provided within the first filter section, the first filter section may have a surface opposite to the side of the first light-emitting element, and a part of the second filter section may protrude above the surface of the first filter section. When the second filter section is provided within the first filter section, the first filter section may cover the second filter section.

In the display device according to the second aspect of the present disclosure, the filter section may be provided on the wavelength selection section or may be provided within the wavelength selection section. When the filter section is provided within the wavelength selection section, the thickness of the filter section may be substantially the same as the thickness of the wavelength selection section. When the filter section is provided within the wavelength selection section, the wavelength selection section may have a surface opposite to the side of the first light-emitting element, and a part of the filter section may protrude onto the above-mentioned surface of the wavelength selection section. When the filter section is provided within the wavelength selection section, the wavelength selection section may cover the filter section.

In the display device according to the first and second aspects of the present disclosure, the column of second pixels may further include a plurality of lenses provided above the plurality of first light-emitting elements. At least some of the plurality of lenses may be shifted in an in-plane direction of the display device with respect to the first light-emitting elements. The in-plane direction in which the plurality of lenses are shifted is arbitrary and can be selected according to the desired characteristics.

In the display device according to the first aspect of the present disclosure, at least some of the second filter sections may be shifted in an in-plane direction of the display device with respect to the first light-emitting element. The in-plane direction in which the second filter sections are shifted is arbitrary and can be selected according to the desired characteristics.

In the display device according to the second aspect of the present disclosure, at least some of the multiple filter sections may be shifted in an in-plane direction of the display device with respect to the first light-emitting element. The in-plane direction in which the filter sections are shifted is arbitrary and can be selected according to the desired characteristics.

In the display device according to the first aspect of the present disclosure, the size of the second pixel in the column direction may be larger than the size of the first pixel in the column direction. By providing a second filter portion having a color different from the second color at each boundary between adjacent second pixels in the column direction, it is possible to suppress a decrease in the viewing angle characteristics caused by the difference in size between the first pixel and the second pixel.

In the display device according to the second aspect of the present disclosure, the size of the second pixel in the column direction may be larger than the size of the first pixel in the column direction. By providing a filter portion having a color different from the second color at each boundary between adjacent second pixels in the column direction, it is possible to suppress a decrease in the viewing angle characteristics caused by the difference in size between the first pixel and the second pixel.

In the display device according to the first aspect of the present disclosure, the first color may be red, and the first pixel may have a resonator structure capable of resonating and emphasizing red light. A second filter section having a color different from the second color is provided at each boundary between adjacent second pixels in the column direction, thereby suppressing a decrease in viewing angle characteristics caused by the resonator structure.

In the display device according to the second aspect of the present disclosure, the first color may be red, and the first pixel may have a resonator structure capable of resonating and emphasizing red light. A filter section having a color different from the second color is provided at each boundary between adjacent second pixels in the column direction, thereby suppressing the degradation of the viewing angle characteristics caused by the resonator structure.

The display device according to the first aspect of the present disclosure may further include a plurality of third pixels capable of emitting light of a third color. When the plurality of third pixels are included, the second filter section may have the first color or the third color. In this case, the second filter section can be formed using the same filter material as the first pixels or the third pixels, thereby reducing the number of types of materials used to form the display device.

The display device according to the second aspect of the present disclosure may further include a plurality of third pixels capable of emitting light of a third color. When the plurality of third pixels are included, the filter portion may have the first color or the third color. In this case, the filter portion can be formed using the same filter material as the first pixels or the third pixels, so that the number of types of materials used to form the display device can be reduced.

In the display devices according to the first and second aspects of the present disclosure, the first, second and third colors may be different from each other, and each of the first, second and third colors may be a color selected from the group consisting of red, blue and green. In this case, from the viewpoint of improving the viewing angle characteristics in the column direction, it is preferable that the tristimulus values X, Y and Z of the CIE 1931 color system obtained by measuring a white image displayed on the display device from the column direction are approximately equal.

In the display device according to the first and second aspects of the present disclosure, when a plurality of third pixels capable of emitting light of a third color are provided, the plurality of third pixels may form a plurality of columns, and the column of third pixels may include a plurality of second light-emitting elements aligned in the column direction, and a third filter section having the third color and provided above the plurality of second light-emitting elements. In this case, from the viewpoint of improving the viewing angle characteristics in the column direction, it is preferable that the plurality of third pixels further include a plurality of fourth filter sections having a color different from the third color and provided above the plurality of second light-emitting elements and at each boundary between adjacent third pixels in the column direction.

In the display device according to the first and second aspects of the present disclosure, when a plurality of third pixels capable of emitting light of a third color are provided, the first, second and third pixels may be arranged in a stripe array or a square array. When the first, second and third pixels are arranged in a square array, the second pixel may be arranged adjacent to the first and third pixels.

In the display device according to the first and second aspects of the present disclosure, the column of second pixels may further include a fifth filter portion that is provided within the second pixels in a plan view and has a color different from the second color. In this case, the viewing angle of the second pixels can be further narrowed.

In the display device according to the first and second aspects of the present disclosure, the column of third pixels may further include a sixth filter portion that is provided within the third pixels in a plan view and has a color different from the third color. In this case, the viewing angle of the third pixels can be further narrowed.

In the display device according to the first and second aspects of the present disclosure, the first light-emitting elements may be configured to emit white light or a second color light.

In the display device according to the second aspect of the present disclosure, the color conversion section may be a filter section or a wavelength conversion section. The wavelength conversion section may be a quantum dot section.

The display device according to the first and second aspects of the present disclosure may be provided in an electronic device. For example, the display device may be provided in an eyewear device such as a VR (Virtual Reality) device, an MR (Mixed Reality) device, or an AR (Augmented Reality) device, or may be provided in an electronic viewfinder (EVF) or a small projector, etc.

In the display devices according to the first and second aspects of the present disclosure, "object B is above object A" refers to the relative positional relationship between object A and object B, and is a concept that includes not only a state in which object B is located directly above object A with no other objects in between, but also a state in which object B is located above object A with at least one other object in between.

In the display devices according to the first and second aspects of the present disclosure, "on object A" in expressions such as "object B is provided on object A" indicates the relative positional relationship between object A and object B, and is a concept that includes not only a state in which object B is located directly on object A without any other object in between, but also a state in which object B is located on object A with at least one other object in between.

<2. First embodiment>
[Background to the creation of the display device 101 according to the first embodiment]
As shown in Fig. 1, when the sub-pixels 10R, 10G, and 10B are arranged in a stripe pattern, the sub-pixels 10R, 10R, the sub-pixels 10G, 10G, and the sub-pixels 10B, 10B having the same emission color may be arranged adjacent to each other in the Y-axis direction. In the display device 101A in which the sub-pixels 10R, 10G, and 10B are arranged in this manner, the viewing angle characteristics may be deteriorated because the tristimulus values X, Y, and Z obtained by measuring obliquely from the Y-axis direction are different. Specifically, when a white image is displayed on the display device 101A, a difference in color may occur between the image viewed from the Z-axis direction (front direction) and the image viewed obliquely from the Y-axis direction. The tristimulus values X, Y, and Z generally correspond to the three primary colors R, G, and B, i.e., the emission colors of the sub-pixels 10R, 10G, and 10B.

Patent Document 1 describes that when the subpixels are arranged in a square, the viewing angle characteristics are degraded due to differences in the aperture ratio of the subpixels. However, as described above, even when the subpixels are arranged in a stripe and there is no difference in the aperture ratio of the subpixels 10R, 10G, and 10B, the viewing angle characteristics may be degraded. For example, in a display device in which the subpixels 10R, 10G, and 10B have a resonator structure (cavity structure), the resonator structure of the subpixel 10R is likely to extract not only red light (e.g., light with a wavelength of about 600 nm) but also blue light (e.g., light with a wavelength of about 400 nm). Light emitted from the OLED layer obliquely rather than directly in front is likely to cause a shift in the interference distance, making the red color more likely to deteriorate. For this reason, the viewing angle characteristics of the subpixel 10R in the Y-axis direction are more likely to be degraded than the viewing angle characteristics of the subpixels 10G and 10B in the Y-axis direction.

In the first embodiment, a display device 101 is described that can suppress the difference between the viewing angle characteristics of the subpixel 10R in the Y-axis direction and the viewing angle characteristics of the subpixels 10G and 10B in the Y-axis direction, even when the subpixels 10R, 10G, and 10B have a resonator structure.

Note that differences in the viewing angle characteristics of subpixels 10R, 10G, and 10B in the Y-axis direction, i.e., differences in the tristimulus values X, Y, and Z of subpixels 10R, 10G, and 10B in the Y-axis direction, may also occur due to factors other than the resonator structure. For example, differences in characteristics due to the film thickness of the organic EL of subpixels 10R, 10G, and 10B, and differences in the concentration and film thickness of the color filters of subpixels 10R, 10G, and 10B may also cause differences in the viewing angle characteristics of subpixels 10R, 10G, and 10B in the Y-axis direction. Therefore, the present disclosure is not limited to display device 101 having a resonator structure.

[Schematic configuration of display device 101]
FIG. 1 is a plan view of a display device 101 according to a first embodiment. The display device 101 may be a top-emission OLED display device. As shown in FIG. 1, the display device 101 has an effective pixel region RE1 and a peripheral region RE2 provided around the effective pixel region RE1. In this specification, a first direction and a second direction perpendicular to the display surface of the display device 101 are referred to as an X-axis direction and a Y-axis direction, respectively, and a direction perpendicular to the display surface of the display device 101 is referred to as a Z-axis direction. In the first embodiment, an example will be described in which the X-axis direction is the horizontal direction in the display surface and the Y-axis direction is the vertical direction in the display surface.

FIG. 2 is a plan view showing an enlarged portion of the effective pixel region RE1. A plurality of sub-pixels 10R, 10G, 10B are two-dimensionally arranged in a prescribed array within the effective pixel region RE1. In the first embodiment, an example in which the prescribed array is a stripe array will be described. A pad section 111 and a driver (not shown) for displaying images, etc. are provided in the peripheral region RE2. A flexible printed circuit (FPC) (not shown) may be connected to the pad section 111.

Subpixel 10R can emit red light (first color light). Subpixel 10G can emit green light (second color light). Subpixel 10B can emit blue light (third color light). In the following description, when subpixels 10R, 10G, and 10B are collectively referred to without any particular distinction, subpixels 10R, 10G, and 10B may be referred to as subpixels 10. One pixel (one pixel) is composed of, for example, a plurality of adjacent subpixels 10R, 10G, and 10B. However, the configuration of one pixel is not limited to this example. Subpixel 10R may have a rectangular shape in a plan view. In the first embodiment, one of subpixels 10G and 10B is an example of a second pixel in the first aspect and the second aspect of the present disclosure, and the other is an example of a third pixel in the first aspect and the second aspect of the present disclosure. Subpixel 10R is an example of a first pixel in the first aspect of the present disclosure and the second aspect of the present disclosure.

The multiple sub-pixels 10R form a column of multiple sub-pixels 10R. The column of sub-pixels 10R is formed by multiple sub-pixels 10R lined up in the Y-axis direction. The multiple sub-pixels 10G form a column of multiple sub-pixels 10G. The column of sub-pixels 10G is formed by multiple sub-pixels 10G lined up in the Y-axis direction. The multiple sub-pixels 10B form a column of multiple sub-pixels 10B. The column of sub-pixels 10B is formed by multiple sub-pixels 10B lined up in the Y-axis direction.

The tristimulus values X, Y, and Z of the CIE 1931 color system obtained by measuring a white image displayed on the display device 101 from the Y-axis direction (column direction) are preferably approximately equal within a viewing angle range of ±50°, and more preferably approximately equal within a viewing angle range of ±70°, from the viewpoint of improving the viewing angle characteristics in the Y-axis direction (column direction).

[Layer configuration of display device 101]
Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3. Fig. 5 is a cross-sectional view taken along line V-V in Fig. 3. Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 3. The display device 101 includes a drive substrate 11, a plurality of light-emitting elements 12R, a plurality of light-emitting elements 12G, a plurality of light-emitting elements 12B, a protective layer 13, a planarization layer 14, and a color filter 15. In the following description, when the light-emitting elements 12R, 12G, and 12B are collectively referred to without any particular distinction, the light-emitting elements 12R, 12G, and 12B may be referred to as light-emitting elements 12.

In this specification, of the two surfaces of each layer constituting display device 101, the surface facing the display surface (top side) of display device 101 may be referred to as the first surface, and the surface facing the opposite side to the display surface of display device 101 (bottom side) may be referred to as the second surface. In this specification, planar view refers to the planar view when an object is viewed from a direction perpendicular to the first surface.

(Drive substrate 11)
The driving substrate 11 is a so-called backplane, and can drive a plurality of light-emitting elements 12. The driving substrate 11 includes, for example, a substrate and an insulating layer in this order. A plurality of driving circuits (not shown), a plurality of wirings (not shown), and the like may be provided on the first surface side of the substrate.

The substrate may be, for example, a semiconductor substrate on which transistors and the like can be easily formed, or a glass substrate or resin substrate with low moisture and oxygen permeability. Semiconductor substrates include, for example, amorphous silicon, polycrystalline silicon, or single crystal silicon. Glass substrates include, for example, high strain point glass, soda glass, borosilicate glass, forsterite, lead glass, or quartz glass. Resin substrates include, for example, at least one selected from the group consisting of polymethyl methacrylate, polyvinyl alcohol, polyvinyl phenol, polyether sulfone, polyimide, polycarbonate, polyethylene terephthalate, and polyethylene naphthalate.

The insulating layer is provided on the first surface of the substrate and covers the multiple drive circuits and multiple wirings. The insulating layer includes multiple contact portions (not shown) therein. The multiple contact portions electrically connect the light-emitting elements 12 to the wiring or drive circuits. The contact portions include at least one metal selected from the group consisting of, for example, copper (Cu) and titanium (Ti).

The insulating layer may be an organic insulating layer, an inorganic insulating layer, or a laminate thereof. The organic insulating layer includes at least one selected from the group consisting of, for example, polyimide resin, acrylic resin, and novolac resin. The inorganic insulating layer includes at least one selected from the group consisting of, for example, silicon oxide (SiO _x ), silicon nitride (SiN _x ), and silicon oxynitride (SiO _x N _y ).

(Light-emitting elements 12R, 12G, 12B)
The light-emitting element 12 may be an organic light-emitting diode element (OLED element). The light-emitting element 12 has a first electrode 121, an OLED layer 122, and a second electrode 123, which are arranged in this order on a first surface of the driving substrate 11. The light-emitting element 12R is included in the sub-pixel 10R. The light-emitting element 12G is included in the sub-pixel 10G. The light-emitting element 12B is included in the sub-pixel 10B.

The light-emitting element 12R can emit red light based on the control of a drive circuit, etc. More specifically, the light-emitting element 12R has a resonator structure, and the red light component contained in the white light emitted by the OLED layer 122 can be resonated by the resonator structure, emphasized, and emitted.

The light-emitting element 12G can emit green light based on the control of a drive circuit, etc. More specifically, the light-emitting element 12G has a resonator structure, and the green light component contained in the white light emitted by the OLED layer 122 can be resonated by the resonator structure, and can be emphasized and emitted.

The light-emitting element 12B can emit blue light based on the control of a drive circuit, etc. More specifically, the light-emitting element 12B has a resonator structure, and the blue light component contained in the white light emitted by the OLED layer 122 can be resonated by the resonator structure, emphasized, and emitted. Details of the resonator structure are explained in <7. Examples of resonator structures>.

The multiple light-emitting elements 12 are two-dimensionally arranged in a specified array on the first surface of the drive substrate 11. The specified array is as described above as the specified array of the multiple sub-pixels 10. The multiple light-emitting elements 12R form a row of multiple light-emitting elements 12R. The row is formed by multiple light-emitting elements 12R lined up in the Y-axis direction. The multiple light-emitting elements 12G form a row of multiple light-emitting elements 12G. The row is formed by multiple light-emitting elements 12G lined up in the Y-axis direction. The multiple light-emitting elements 12B form a row of multiple light-emitting elements 12B. The row is formed by multiple light-emitting elements 12B lined up in the Y-axis direction.

(First electrode 121)
The first electrode 121 is provided on the second surface side of the OLED layer 122. The first electrode 121 is an individual electrode provided for each of the light-emitting elements 12 in the effective pixel region RE1. That is, the first electrode 121 is divided between the light-emitting elements 12 adjacent to each other in the in-plane direction of the first surface of the drive substrate 11 in the effective pixel region RE1. In the first embodiment, the first electrode 121 is an anode. When a voltage is applied between the first electrode 121 and the second electrode 123, holes are injected from the first electrode 121 to the OLED layer 122.

The first electrode 121 may be composed of, for example, a metal layer, or may be composed of a metal layer and a transparent conductive oxide layer. When the first electrode 121 is composed of a metal layer and a transparent conductive oxide layer, it is preferable that the transparent conductive oxide layer is provided on the OLED layer 122 side, from the viewpoint of having a layer having a high work function adjacent to the OLED layer 122.

The metal layer may function as a reflective layer that reflects light emitted by the OLED layer 122. The metal layer contains at least one metal element selected from the group consisting of, for example, chromium (Cr), gold (Au), platinum (Pt), nickel (Ni), copper (Cu), molybdenum (Mo), titanium (Ti), tantalum (Ta), aluminum (Al), magnesium (Mg), iron (Fe), tungsten (W) and silver (Ag). The metal layer may contain at least one metal element as a constituent element of an alloy. Specific examples of the alloy include an aluminum alloy or a silver alloy. Specific examples of the aluminum alloy include, for example, AlNd or AlCu.

A base layer (not shown) may be provided adjacent to the second surface side of the metal layer. The base layer may be capable of improving the crystal orientation of the metal layer when the metal layer is formed. The base layer may contain at least one metal element selected from the group consisting of titanium (Ti) and tantalum (Ta), for example. The base layer may contain the at least one metal element as a constituent element of an alloy.

The transparent conductive oxide layer includes a transparent conductive oxide. The transparent conductive oxide includes at least one type selected from the group consisting of transparent conductive oxides containing indium (hereinafter referred to as "indium-based transparent conductive oxides"), transparent conductive oxides containing tin (hereinafter referred to as "tin-based transparent conductive oxides"), and transparent conductive oxides containing zinc (hereinafter referred to as "zinc-based transparent conductive oxides").

Indium-based transparent conductive oxides include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), indium gallium zinc oxide (IGZO) or fluorine-doped indium oxide (IFO). Among these transparent conductive oxides, indium tin oxide (ITO) is particularly preferred. This is because indium tin oxide (ITO) has a particularly low work function barrier for hole injection into the OLED layer 122, and therefore the driving voltage of the display device 101 can be particularly reduced. Tin-based transparent conductive oxides include, for example, tin oxide, antimony-doped tin oxide (ATO) or fluorine-doped tin oxide (FTO). Zinc-based transparent conductive oxides include, for example, zinc oxide, aluminum-doped zinc oxide (AZO), boron-doped zinc oxide or gallium-doped zinc oxide (GZO).

(OLED layer 122)
The OLED layer 122 can emit white light. The OLED layer 122 is provided between a first electrode 121 and a second electrode 123. The OLED layer 122 has a plurality of light-emitting elements in the effective pixel region RE1. The OLED layer 122 is provided individually for each element 12. That is, the OLED layer 122 is divided between adjacent light emitting elements 12 in the in-plane direction of the first surface of the drive substrate 11 within the effective pixel region RE1.

The OLED layer 122 may be composed of a laminate including an organic light-emitting layer, and in that case, some layers of the laminate (e.g., an electron injection layer) may be inorganic layers. The OLED layer 122 may be an OLED layer having a single light-emitting unit, an OLED layer having two light-emitting units (tandem structure), or an OLED layer having a structure other than these. An OLED layer having a single light-emitting unit has a structure in which, for example, a hole injection layer, a hole transport layer, a red light-emitting layer, a light-emitting separation layer, a blue light-emitting layer, a green light-emitting layer, an electron transport layer, and an electron injection layer are stacked in this order from the first electrode 121 to the second electrode 123. An OLED layer having two light-emitting units has a structure in which, for example, a hole injection layer, a hole transport layer, a blue light-emitting layer, an electron transport layer, a charge generation layer, a hole transport layer, a yellow light-emitting layer, an electron transport layer, and an electron injection layer are stacked in this order from the first electrode 121 to the second electrode 123.

The hole injection layer can increase the efficiency of hole injection into each light-emitting layer and suppress leakage. The hole transport layer can increase the efficiency of hole transport into each light-emitting layer. The electron injection layer can increase the efficiency of electron injection into each light-emitting layer. The electron transport layer can increase the efficiency of electron transport into each light-emitting layer. The light-emitting separation layer is a layer for adjusting the injection of carriers into each light-emitting layer, and the light emission balance of each color is adjusted by injecting electrons and holes into each light-emitting layer through the light-emitting separation layer. The charge generation layer can supply electrons and holes to the two light-emitting layers arranged to sandwich the charge generation layer.

When an electric field is applied to the red, green, blue, and yellow light-emitting layers, recombination occurs between holes injected from the first electrode 121 or the charge generation layer and electrons injected from the second electrode 123 or the charge generation layer, and the red, green, blue, and yellow light-emitting layers can emit light, green, blue, and yellow, respectively.

(Second electrode 123)
The second electrodes 123 are provided on the first surface side of the OLED layer 122. The second electrodes 123 are individual electrodes provided individually for the plurality of light-emitting elements 12 in the effective pixel region RE1. That is, the second electrodes 123 are separated between the light-emitting elements 12 adjacent to each other in the in-plane direction of the first surface of the drive substrate 11 in the effective pixel region RE1.

In the first embodiment, the second electrode 123 is a cathode. When a voltage is applied between the first electrode 121 and the second electrode 123, electrons are injected from the second electrode 123 into the OLED layer 122. The second electrode 123 is transparent to visible light and is configured to be able to extract light resonated by the resonator structure. In this specification, visible light refers to light in the wavelength range of 360 nm to 830 nm.

The second electrode 123 is preferably made of a material having high light transmittance and a small work function in order to increase the light emission efficiency. The second electrode 123 is made of, for example, at least one of a metal layer and a transparent conductive oxide layer. More specifically, the second electrode 123 is made of a single layer film of a metal layer or a transparent conductive oxide layer, or a laminated film of a metal layer and a transparent conductive oxide layer. In order to increase the light resonance effect due to the resonator structure, it is preferable that the second electrode 123 includes a metal layer. When the second electrode 123 is made of a laminated film, the metal layer may be provided on the OLED layer 122 side, or the transparent conductive oxide layer may be provided on the OLED layer 122 side. However, from the viewpoint of having a layer having a low work function adjacent to the OLED layer 122, it is preferable that the metal layer is provided on the OLED layer 122 side.

The metal layer contains at least one metal element selected from the group consisting of magnesium (Mg), aluminum (Al), silver (Ag), calcium (Ca) and sodium (Na). The metal layer may contain at least one metal element as a constituent element of an alloy. Specific examples of the alloy include an MgAg alloy, an MgAl alloy, and an AlLi alloy. The transparent conductive oxide layer contains a transparent conductive oxide. Examples of the transparent conductive oxide include materials similar to the transparent conductive oxide of the first electrode 121 described above.

(Protective Layer 13)
The protective layer 13 is provided on the first surface of the driving substrate 11 so as to cover the plurality of light-emitting elements 12. The protective layer 13 is translucent to light emitted from the light-emitting elements 12. The protective layer 13 can protect the plurality of light-emitting elements 12 and the like. For example, the protective layer 13 can suppress the intrusion of moisture from the external environment into the plurality of light-emitting elements 12 and the like. In addition, when the second electrode 123 is composed of a metal layer, the protective layer 13 may have a function of suppressing oxidation of this metal layer.

The protective layer 13 includes, for example, at least one of an inorganic material and an organic material having low hygroscopicity. The protective layer 13 may have a single-layer structure or a multi-layer structure. When the thickness of the protective layer 13 is increased, it is preferable to use a multi-layer structure. This is to relieve internal stress in the protective layer 13. The inorganic material includes, for example, at least one selected from the group consisting of silicon oxide (SiO _x ), silicon nitride (SiN _x ), silicon oxynitride (SiO _x N _y ), titanium oxide (TiO _x ), and aluminum oxide (AlO _x ). The organic material includes, for example, a cured product of at least one resin selected from the group consisting of a thermosetting resin and a photosensitive resin. The photosensitive resin includes, for example, an ultraviolet-curable resin. Specifically, the organic material includes, for example, at least one selected from the group consisting of an acrylic resin, a polyimide resin, a novolac resin, an epoxy resin, a norbornene resin, and a parylene resin.

The protective layer 13 preferably includes a deposition layer in which an atomic layer is deposited. The deposition layer may be an ALD (Atomic Layer Deposition) layer. When the protective layer 13 includes a deposition layer, the effect of the protective layer 13 in suppressing moisture penetration can be improved. The deposition layer includes, for example, a metal oxide or a metal nitride. The metal oxide includes, for example, aluminum oxide (AlO _x ) or titanium oxide (TiO _x ). The metal nitride includes, for example, titanium nitride (TiN _x ).

(Planarization Layer 14)
The planarization layer 14 is provided on the first surface of the protective layer 13. The planarization layer 14 fills in the irregularities on the first surface of the protective layer 13, and can form a flat first surface on the upper side of the protective layer 13. The planarization layer 14 is translucent to the light emitted from the light-emitting element 12. The planarization layer 14 includes, for example, at least one of an organic material and an inorganic material.

The organic material includes, for example, a cured product of a photosensitive resin. The photosensitive resin may include either a positive-type photosensitive resin or a negative-type photosensitive resin. Specifically, the photosensitive resin includes, for example, at least one selected from the group consisting of polyimide, polyimide precursor, polybenzoxazole, polybenzoxazole precursor, acrylic resin, phenolic resin, and siloxane resin. Examples of the inorganic material include the same materials as the inorganic material of the protective layer 13.

(Color filter 15)
The color filter 15 is a so-called on-chip color filter (OCCF). The color filter 15 is provided above the plurality of light-emitting elements 12. More specifically, the color filter 15 is provided on a first surface of the planarization layer 14.

The color filter 15 includes a plurality of filter portions 15R, a plurality of filter portions 15G, a plurality of filter portions 15B, and a plurality of filter portions 150. One of filter portion 15G and filter portion 15B is an example of a first filter portion in the first aspect of the present disclosure and an example of a color conversion portion in the second aspect of the present disclosure, and the other is an example of a third filter portion in the first aspect of the present disclosure. Filter portion 150 is an example of a second filter portion and a fourth filter portion in the first aspect of the present disclosure, and an example of a filter portion in the second aspect of the present disclosure.

(Filter parts 15R, 15G, 15B)
The multiple filter portions 15R, 15G, and 15B are arranged in a stripe pattern, similar to the multiple sub-pixels 10R, 10G, and 10B. The filter portions 15R, 15G, and 15B have a linear shape extending in the Y-axis direction (the direction of the columns formed by the sub-pixels 10R, 10G, and 10B, respectively).

Filter section 15R is provided above the row of light-emitting elements 12R. Filter section 15G is provided above the row of light-emitting elements 12G. Filter section 15B is provided above the row of light-emitting elements 12B. The row of sub-pixels 10R is composed of the row of light-emitting elements 12R and filter section 15R provided above the row of light-emitting elements 12R. The row of sub-pixels 10G is composed of the row of light-emitting elements 12G and filter section 15G provided above the row of light-emitting elements 12G. The row of sub-pixels 10B is composed of the row of light-emitting elements 12B and filter section 15B provided above the row of light-emitting elements 12B.

Filter section 15R has a red color. Filter section 15R transmits the red light component of the light emitted from light-emitting element 12R, but can absorb visible light components other than red light. Filter section 15G has a green color. Filter section 15G transmits the green light component of the light emitted from light-emitting element 12G, but can absorb visible light components other than green light. Filter section 15B has a blue color. Filter section 15B transmits the blue light component of the light emitted from light-emitting element 12B, but can absorb visible light components other than blue light. As described above, the light emitted from light-emitting elements 12R, 12G, and 12B, respectively, transmits through filter sections 15R, 15G, and 15B, thereby improving the color purity of sub-pixels 10R, 10G, and 10B.

Filter portion 15R includes, for example, a red color resist. Filter portion 15G includes, for example, a green color resist. Filter portion 15B includes, for example, a blue color resist.

(Filter section 150)
The multiple filter sections 150 are provided on a first surface of the filter section 15G and on the first surface of the filter section 15G. The filter sections 150 are located in the boundaries between the sub-pixels 10G adjacent in the Y-axis direction and the boundaries between the sub-pixels 10B adjacent in the Y-axis direction in a plan view. The filter sections 150 may be configured to separate the sub-pixels 10G adjacent in the Y-axis direction and the sub-pixels 10B adjacent in the Y-axis direction in a plan view.

Filter section 150 may have an elongated shape in a plan view. When filter section 150 has an elongated shape in this manner, the longitudinal direction of the elongated shape may approximately coincide with the X-axis direction. The length of filter section 151 in the X-axis direction may be approximately equal to the sum of the width of filter section 15G in the X-axis direction and the width of filter section 15B in the X-axis direction.

The long filter section 150 has, for example, a substantially rectangular or oval shape. In this embodiment, a substantially rectangular shape is not limited to a rectangle in the strict sense, but includes shapes that are visually recognized as being close to a rectangle. For example, it may be a rectangle that is distorted or deformed within the range of tolerances, errors, etc. A substantially rectangular shape includes a rectangular shape with rounded corners and a rectangular shape with notched corners. An oval shape includes an oval shape, an ellipse, an egg shape, etc.

Filter section 150 has a different color from filter section 15G and filter section 15R. Filter section 151 has a different color from filter section 15G and filter section 15R, so that it is possible to block light incident on the boundary between light-emitting element 12 and sub-pixel 10G and on the boundary between light-emitting element 12 and sub-pixel 10B. This makes it possible to narrow the viewing angle of sub-pixel 10G and sub-pixel 10B, and to suppress the difference in the viewing angle characteristics of the tristimulus values, i.e., the difference in the viewing angle characteristics between sub-pixels 10G, 10B and sub-pixel 10R.

The filter section 150 preferably has the same red color as the filter section 15R. Since the filter section 150 has the same red color as the filter section 15R, the combination of the filter section 150 and the filter section 15G makes it possible to block light in the substantially entire visible light range at the boundary between the sub-pixels 10G, and the combination of the filter section 150 and the filter section 15B makes it possible to block light in the substantially entire visible light range at the boundary between the sub-pixels 10B. Therefore, the viewing angle characteristics in the Y-axis direction can be further improved. Furthermore, since the filter section 150 has the same red color as the filter section 15R, the filter section 150 can be formed using the same material as the filter section 15R. Therefore, the number of types of materials required for manufacturing the display device 101 can be reduced.

Filter unit 150 includes a color resist of a different color from filter unit 15G and filter unit 15B. Filter unit 150 preferably includes a red color resist of the same color as filter unit 15R, or may include the same color resist as filter unit 15R.

[Manufacturing method of display device 101]
An example of a method for manufacturing the display device 101 according to the first embodiment will be described below.

(Process for forming light emitting element 12)
First, a plurality of light emitting elements 12 are formed on the first surface of the driving substrate 11. As a method for forming the light emitting elements 12, for example, a known method can be used.

(Step of forming protective layer 13)
Next, a layer is formed on the first surface of the drive substrate 11 so as to cover the plurality of light emitting elements 12, for example, by a CVD method.

(Step of forming the planarizing layer 14)
Next, for example, a photosensitive resin is applied onto the first surface of the protective layer 13, and then the photosensitive resin is irradiated with light to harden the photosensitive resin. As a result, the planarization layer 14 is formed on the first surface of the protective layer 13.

(Process for forming color filter 15)
Next, a green color resist is applied to the first surface of the planarization layer 14, and is irradiated with ultraviolet light through a photomask for pattern exposure, followed by development to form a plurality of filter portions 15G. Next, a red color resist is applied to the first surface of the planarization layer 14 so as to cover the plurality of filter portions 15G, and is irradiated with ultraviolet light through a photomask for pattern exposure, followed by development to form a plurality of filter portions 15R. Next, a blue color resist is applied to the first surface of the planarization layer 14 so as to cover the plurality of filter portions 15G and the plurality of filter portions 15R, and is irradiated with ultraviolet light through a photomask for pattern exposure, followed by development to form a plurality of filter portions 15B.

Next, a color resist of a different color from filter portion 15G and filter portion 15B is applied onto the first surfaces of filter portion 15R, filter portion 15G, and filter portion 152, and then exposed to ultraviolet light through a photomask for pattern exposure, followed by development to form a plurality of filter portions 150 at the boundaries between sub-pixels 10G and the boundaries between sub-pixels 10B. In this way, a color filter 15 is formed on the first surface of planarization layer 14. The resist used to form filter portion 150 is preferably a red color resist, the same color as filter portion 15R. In this case, the number of types of color resist required to manufacture display device 101 can be reduced.

[Action and Effect]
As described above, in the display device 101 according to the first embodiment, the filter unit 150 is provided at the boundary between the sub-pixels 10G adjacent to each other in the Y-axis direction and at the boundary between the sub-pixels 10B adjacent to each other in the Y-axis direction. The filter unit 150 has a color different from that of the sub-pixels 10G and 10B. This narrows the viewing angle of the sub-pixels 10G and 10B in the Y-axis direction, and suppresses the difference in viewing angle characteristics between the sub-pixels 10G and 10B and the sub-pixel 10R. This makes it possible to suppress the occurrence of a difference in color between an image viewed from the Z-axis direction (front direction) and an image viewed obliquely from the Y-axis direction. Thus, in the display device 101 in which the sub-pixels 10R, 10G, and 10B having a resonator structure are arranged in stripes, the viewing angle characteristics in the Y-axis direction can be improved.

<3. Second embodiment>
[Background to the creation of the display device 102 according to the second embodiment]
In a display device 102A in which sub-pixels 10R, 10G, and 10B are arranged in a square, the sub-pixels 10R and 10G are arranged alternately in the Y-axis direction, whereas the sub-pixels 10B may be arranged continuously in the Y-axis direction, as shown in Fig. 7. In a display device 102A having such a pixel arrangement, the tristimulus values X, Y, and Z obtained by measuring obliquely from the Y-axis direction differ, and the viewing angle characteristics deteriorate.

In the second embodiment, a display device 102 is described that can improve the viewing angle characteristics in the Y-axis direction even when the sub-pixels 10R, 10G, and 10B are arranged in a square.

[Configuration of display device 102]
Fig. 8 is an enlarged plan view showing a part of the effective pixel region RE1 of the display device 102 according to the second embodiment. Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 9. Fig. 10 is a cross-sectional view taken along line X-X in Fig. 10. The display device 102 differs from the display device 101 according to the first embodiment in that the sub-pixels 10R, 10G, and 10B are arranged in a square, and the filter portion 150 is provided in the boundary between the sub-pixels 10B adjacent in the Y-axis direction.

The sub-pixels 10R and the sub-pixels 10G are arranged alternately in the Y-axis direction, forming multiple columns extending in the Y-axis direction. The sub-pixels 10R and 10G have a square shape in a plan view.

Multiple sub-pixels 10B are arranged consecutively in the Y-axis direction to form multiple columns extending in the Y-axis direction. Sub-pixels 10B have a rectangular shape in a plan view. One sub-pixel 10B is disposed adjacent to a pair of sub-pixels 10R and 10G. The size of sub-pixel 10B in the Y-axis direction (column direction of columns of sub-pixels 10B) is larger than the sizes of sub-pixels 10R and 10G in the Y-axis direction.

In the second embodiment, the display device 102 may include a plurality of light-emitting elements 12R, 12G, and 12B having a resonator structure, or may include a light-emitting element 12 that does not have a resonator structure and can emit white light instead of these light-emitting elements 12R, 12G, and 12B.

[Action and Effect]
As described above, in the display device 102 according to the second embodiment, the filter unit 150 is provided at the boundary between the sub-pixels 10B adjacent to each other in the Y-axis direction. The filter unit 150 has a color different from that of the sub-pixels 10B. This narrows the viewing angle of the sub-pixel 10B in the Y-axis direction, and suppresses the difference in viewing angle characteristics between the sub-pixels 10R and 10G and the sub-pixel 10B. This makes it possible to suppress the occurrence of a difference in color between an image viewed from the Z-axis direction (front direction) and an image viewed obliquely from the Y-axis direction. Thus, in the display device 102 in which the sub-pixels 10R, 10G, and 10B are arranged in a square shape, the viewing angle characteristics in the Y-axis direction can be improved.

<4. Modifications>
[Modification 1]
The display device 101 according to the first embodiment may further include a filter unit 150a, as shown in Fig. 11 and Fig. 12. The filter unit 150a is disposed in the sub-pixels 10G and 10B, i.e., between the filter units 150 adjacent to each other in the Y-axis direction. The filter unit 150a may be located at the center of the sub-pixels 10G and 10B in the Y-axis direction. The filter unit 150a may be similar to the filter unit 150 in other respects than the arrangement position. The filter unit 150a is an example of a fifth filter unit in the first aspect and the second aspect of the present disclosure.

By including the filter section 150a in the display device 101, the viewing angle of the sub-pixels 10G and 10B in the Y-axis direction can be further narrowed.

The configuration of the filter section 150a is not limited to the above example, and for example, the filter section 150a may be provided only in the subpixel 10G or only in the subpixel 10B. In this case, the viewing angle of the subpixel 10G in the Y-axis direction or the viewing angle of the subpixel 10B in the Y-axis direction can be further narrowed.

[Modification 2]
13 and 14, the display device 102 according to the second embodiment may further include a filter unit 150a. The filter unit 150a is disposed in the subpixel 10B, that is, between the filter units 150 adjacent to each other in the Y-axis direction. The filter unit 150a may be located at the center of the subpixel 10B in the Y-axis direction.

By including the filter portion 150a in the display device 101, the viewing angle of the subpixel 10B in the Y-axis direction can be further narrowed.

[Modification 3]
In the first embodiment, an example has been described in which the color filter 15 includes a plurality of filter portions 150 (see FIG. 3). However, the configuration of the color filter 15 is not limited to this example. For example, the color filter 15 may include a plurality of filter portions 151 and a plurality of filter portions 152, instead of the plurality of filter portions 150, as shown in FIG.

The multiple filter sections 151 are provided on a first surface of the filter section 15G. The filter sections 151 are arranged in the boundary between the sub-pixels 10G adjacent in the Y-axis direction in a planar view. The multiple filter sections 152 are provided on a first surface of the filter section 152. The filter sections 152 are arranged in the boundary between the sub-pixels 10B adjacent in the Y-axis direction in a planar view.

The filter section 151 may be configured to separate adjacent sub-pixels 10G in the Y-axis direction in a planar view. The filter section 152 may be configured to separate adjacent sub-pixels 10B in the Y-axis direction in a planar view.

Filter portions 151 and 152 may have an elongated shape. When filter portions 151 and 152 have an elongated shape, the longitudinal direction of the elongated shape may approximately coincide with the X-axis direction. The length of filter portion 151 in the longitudinal direction of filter portion 151 may be approximately the same as the width of filter portion 15G in the X-axis direction. The length of filter portion 152 in the longitudinal direction of filter portion 152 may be approximately the same as the width of filter portion 152 in the X-axis direction. An example of the shape of elongated filter portions 151 and 152 is a shape similar to that of elongated filter portion 150. The shapes of filter portions 151 and 152 may be the same or different.

Filter portion 151 has a different color from filter portion 15G. By having filter portion 151 have a different color from filter portion 15G, it is possible to block light that is incident from light-emitting element 12G to the boundary portion between sub-pixels 10G. This makes it possible to narrow the viewing angle of sub-pixel 10G and suppress the difference in viewing angle characteristics between sub-pixels 10G and 10R.

It is preferable that filter section 151 has the same red color as filter section 15R or the same blue color as filter section 15B. By having filter section 151 have the same red color as filter section 15R or the same blue color as filter section 15B, it becomes possible to block light of almost the entire visible light range at the boundary between sub-pixels 10G by combining filter section 151 with filter section 15R or filter section 15B. Therefore, the viewing angle characteristics in the Y-axis direction can be further improved.

Furthermore, since filter portion 151 has the same red color as filter portion 15R or the same blue color as filter portion 15B, filter portion 151 can be formed using the same material as filter portion 15R or filter portion 15B. Therefore, the number of types of materials required to manufacture display device 101 can be reduced.

Filter portion 152 has a different color from filter portion 15B. By having filter portion 152 have a different color from filter portion 15B, it is possible to block light from light-emitting element 12B that is incident on the boundary between sub-pixels 10B. This makes it possible to narrow the viewing angle of sub-pixel 10B and suppress the difference in viewing angle characteristics between sub-pixels 10B and 10R.

It is preferable that filter section 152 has the same red color as filter section 15R or the same green color as filter section 15G. By having filter section 152 have the same red color as filter section 15R or the same green color as filter section 15G, it becomes possible to block light of almost the entire visible light range at the boundary between sub-pixels 10B by combining filter section 151 with filter section 15R or filter section 15G. Therefore, the viewing angle characteristics in the Y-axis direction can be further improved.

Furthermore, since filter portion 151 has the same red color as filter portion 15R or the same green color as filter portion 15G, filter portion 152 can be formed using the same material as filter portion 15R or filter portion 15G. Therefore, the number of types of materials required to manufacture display device 101 can be reduced.

Filter portion 151 includes a color resist of a different color from filter portion 15G. Filter portion 151 preferably includes a red color resist of the same color as filter portion 15R, or a blue color resist of the same color as filter portion 15B, and may include the same color resist as filter portion 15R or filter portion 15B. Filter portion 152 includes a color resist of a different color from filter portion 15B. Filter portion 152 preferably includes a red color resist of the same color as filter portion 15R, or a green color resist of the same color as filter portion 15G, and may include the same color resist as filter portion 15R or filter portion 15G.

The filter portions 151 and 152 are formed as follows. After the filter portions 15R, 15G, and 15B are formed, a color resist of a different color than that of filter portion 15G is applied to the first surfaces of filter portions 15R, 15G, and 15B, which are then irradiated with ultraviolet light through a photomask and pattern-exposed, and then developed, thereby forming a plurality of filter portions 151 at the boundaries between subpixels 10G. Next, a color resist of a different color than that of filter portion 15B is applied to the first surfaces of filter portions 15R, 15G, and 15B, which are then irradiated with ultraviolet light through a photomask and pattern-exposed, and then developed, thereby forming a plurality of filter portions 152 at the boundaries between subpixels 10B.

The configuration of the filter units 151 and 152 is not limited to the above example. For example, as shown in FIG. 16, sub-pixels 10G adjacent to each other in the Y-axis direction may be partially connected in a planar view. That is, the length of the filter unit 151 in the X-axis direction may be shorter than the width of the filter unit 15G in the X-axis direction. Similarly, as shown in FIG. 16, sub-pixels 10B adjacent to each other in the Y-axis direction may be partially connected in a planar view. That is, the length of the filter unit 152 in the X-axis direction may be shorter than the width of the filter unit 15B in the X-axis direction.

[Modification 4]
In the first embodiment, an example in which the filter unit 150 is provided on the first surface of the filter unit 15G and the first surface of the filter unit 15B has been described (see FIGS. 5 and 6 ). However, the configuration of the color filter 15 is not limited to this example.

17, filter portion 150 may be provided in filter portion 15G and filter portion 15B. In this case, the bottom of filter portion 150 may be located on the first surface of planarization layer 14, and the top of filter portion 150 may have substantially the same height as the first surface of filter portion 15G and/or the first surface of filter portion 15B. In other words, the thickness of filter portion 150 may be substantially the same as the thickness of filter portion 15G and/or filter portion 15B. In this specification, "and/or" means at least one of the following. For example, "X and/or Y" means X only, Y only, or both X and Y.

For example, as shown in FIG. 18, the bottom of filter portion 150 may be located on the first surface of planarization layer 14, and the height of the top of filter portion 150 may be greater than the height of the first surface of filter portion 15G and/or the height of the first surface of filter portion 15B. That is, the thickness of filter portion 150 may be greater than the thickness of filter portion 15G and/or the thickness of filter portion 15B. The top of filter portion 150 may protrude onto the first surface of filter portion 15G and/or the first surface of filter portion 15B.

For example, as shown in FIG. 19, the bottom of filter portion 150 may be located on the first surface of planarization layer 14, and the height of the top of filter portion 150 may be lower than the height of the first surface of filter portion 15G and/or the height of the first surface of filter portion 15B. That is, the thickness of filter portion 150 may be thinner than the thickness of filter portion 15G and/or the thickness of filter portion 15B. The top of filter portion 150 may be covered by filter portion 15G and/or filter portion 15B.

In the above explanation, a modified example of the filter unit 150 in the first embodiment has been described, but the configuration of the above modified example 4 may be applied to the filter unit 150 in the second embodiment. In addition, the configuration of the above modified example 4 may be applied to the filter unit 150a in modified examples 1 and 2, or to the filter units 151 and 152 in modified example 3.

[Modification 5]
In the first embodiment, an example was described in which the color conversion layer (color filter 15) includes a plurality of filter portions 15R, a plurality of filter portions 15G, a plurality of filter portions 15B, and a plurality of filter portions 150. However, the configuration of the color conversion layer is not limited to this example. For example, the color conversion layer may include at least one of a plurality of first wavelength conversion portions, a plurality of second wavelength conversion portions, and a plurality of third wavelength conversion portions, instead of at least one of the plurality of filter portions 15R, the plurality of filter portions 15G, and the plurality of filter portions 15B. In the eighth modification, the light-emitting elements 12 included in the sub-pixels 10R, 10G, and 10B may be configured to be capable of emitting light of the same color. For example, the light-emitting elements 12 included in the sub-pixels 10R, 10G, and 10B may be light-emitting elements 12B configured to be capable of emitting blue light.

The first wavelength conversion section is included in the subpixel 10R in place of the filter section 15R. The first wavelength conversion section can convert the light emitted from the light-emitting element 12 of the subpixel 10R into red light and emit the red light. The second wavelength conversion section is included in the subpixel 10G in place of the filter section 15G. The second wavelength conversion section can convert the light emitted from the light-emitting element 12 of the subpixel 10G into green light and emit the green light. The third wavelength conversion section is included in the subpixel 10B in place of the filter section 15B. The third wavelength conversion section can convert the light emitted from the light-emitting element 12 of the subpixel 10B into blue light and emit the blue light. The wavelength conversion in the first wavelength conversion section, the second wavelength conversion section, and the third wavelength conversion section may be either up-conversion or down-conversion.

If the light-emitting element 12 included in subpixel 10R, subpixel 10G, and subpixel 10B is a light-emitting element 12B configured to emit blue light, subpixel 10B may include a filter portion 15B instead of the third wavelength conversion portion, or may not include either the filter portion 15B or the third wavelength conversion portion.

The first wavelength conversion section, the second wavelength conversion section, and the third wavelength conversion section include an upconversion material or a downconversion material. Specifically, the first wavelength conversion section, the second wavelength conversion section, and the third wavelength conversion section include, for example, quantum dots (semiconductor particles).

In the above description, an example has been described in which the color conversion layer includes at least one of a plurality of first wavelength conversion sections, a plurality of second wavelength conversion sections, and a plurality of third wavelength conversion sections, instead of at least one of a plurality of filter sections 15R, a plurality of filter sections 15G, and a plurality of filter sections 15B. However, the configuration of the color conversion layer is not limited to this, and the color conversion layer may include a plurality of first wavelength conversion sections, a plurality of second wavelength conversion sections, and a plurality of third wavelength conversion sections, together with at least one of a plurality of filter sections 15R, a plurality of filter sections 15G, and a plurality of filter sections 15B.

For example, the color conversion layer may include both filter portion 15R and the first wavelength conversion portion, in which case filter portion 15R may be provided above the first wavelength conversion portion. The color conversion layer may include both filter portion 15G and the second wavelength conversion portion, in which case filter portion 15G may be provided above the second wavelength conversion portion. The color conversion layer may include both filter portion 15B and the third wavelength conversion portion, in which case filter portion 15B may be provided above the third wavelength conversion portion.

In the above explanation, a modified example of the wavelength conversion layer (filter section 150) in the first embodiment has been described, but the configuration of the above modified example 5 may be applied to the wavelength conversion layer (filter section 150) in the second embodiment. Also, the configuration of the above modified example 5 may be applied to the wavelength conversion layer (filter section 150) in modified examples 1 to 4.

[Modification 6]
In the first and second embodiments, an example in which the color filter 15 is an on-chip color filter has been described. However, the configuration of the display devices 101 and 102 is not limited to this example. For example, the display devices 101 and 102 may include a filled resin layer, a color filter 15, and a substrate on the protective layer 13 in this order.

The filled resin layer includes, for example, a cured product of a curable resin. The curable resin includes, for example, at least one type selected from the group consisting of thermosetting resins and ultraviolet curable resins. Note that the filled resin layer is not limited to thermosetting resins and ultraviolet curable resins, and may include types of curable resins other than thermosetting resins and ultraviolet curable resins.

The substrate seals the first surface of the drive substrate 11 on which the multiple light emitting elements 12 and the like are provided. The substrate is translucent to the light of each color emitted from the color filter 15. The substrate is, for example, a glass substrate.

The display device 101 having the above configuration is manufactured, for example, as follows. The color filter 15 is formed on the second surface of the substrate. After the protective layer 13 is formed on the first surface of the drive substrate 11 so as to cover the multiple light-emitting elements 12, a filling resin is applied to the first surface of the protective layer 13, and the substrate is placed on the filling resin so that the color filter 15 is on the filling resin side. After placement, the filling resin is cured by, for example, applying heat to the filling resin or irradiating it with ultraviolet light, thereby bonding the drive substrate 11 and the substrate via the filling resin. This seals the display device 101. Note that if the filling resin contains both a thermosetting resin and an ultraviolet-curing resin, the filling resin may be temporarily cured by irradiating it with ultraviolet light, and then heated to fully cure it.

[Modification 7]
In the first embodiment, an example in which the color filter 15 includes a plurality of filter portions 150 has been described. However, the configuration of the color filter 15 is not limited to this example. For example, the color filter 15 may include a black light-shielding portion instead of the plurality of filter portions 150. Similarly, the color filter 15 in the second embodiment may include a black light-shielding portion instead of the plurality of filter portions 150. The color filter 15 in the first and second modifications may include a black light-shielding portion instead of the plurality of filter portions 150 and the plurality of filter portions 150a. The color filter 15 in the third modification may include a black light-shielding portion instead of the plurality of filter portions 150 and the plurality of filter portions 151 and 152.

[Modification 8]
In the first embodiment, an example has been described in which the OLED layer 122 and the second electrode 123 are separated between the light emitting elements 12 adjacent in the in-plane direction of the first surface of the drive substrate 11. However, the configurations of the OLED layer 122 and the second electrode 123 are not limited to this example. For example, as shown in FIG. 20 , the OLED layer 122 may be connected between the light emitting elements 12 adjacent in the in-plane direction of the first surface of the drive substrate 11 and may be a layer common to the plurality of light emitting elements 12. Similarly, the second electrode 123 may be connected between the light emitting elements 12 adjacent in the in-plane direction of the first surface of the drive substrate 11 and may be an electrode common to the plurality of light emitting elements 12.

In the above explanation, a modified example of the OLED layer 122 and the second electrode 123 in the first embodiment has been described, but the configuration of the above modified example 5 may also be applied to the OLED layer 122 and the second electrode 123 in the second embodiment.

[Modification 9]
In the first and second embodiments, an example has been described in which the light-emitting elements 12R, 12G, and 12B include an OLED layer 122 capable of emitting white light. However, the configuration of the light-emitting elements 12R, 12G, and 12B is not limited to this example. For example, the light-emitting element 12R may include an OLED layer 122 capable of emitting red light, the light-emitting element 12G may include an OLED layer 122 capable of emitting green light, and the light-emitting element 12B may include an OLED layer 122 capable of emitting blue light. In this case, the light-emitting elements 12R, 12G, and 12B may or may not have a resonator structure.

[Modification 10]
The display device 101 according to the first embodiment may further include a lens array 16 as shown in FIG. 21 . The lens array 16 is provided on a first surface of the color filter 15. A planarization layer may be provided between the color filter 15 and the lens array 16. The lens array 16 includes a plurality of lenses 161. The lenses 161 can condense light emitted upward from the light-emitting element 12 in a front direction. The plurality of lenses 161 are so-called on-chip microlenses (OCLs), and are two-dimensionally arranged in a prescribed array on the first surface of the color filter 15. The prescribed array may be an array similar to that of the sub-pixels 10 in the first embodiment.

One lens 161 may be provided above one light-emitting element 12, or two or more lenses 161 may be provided above one light-emitting element 12. FIG. 21 shows an example in which one lens 161 is provided above one light-emitting element 12. The lens 161 may have a curved surface on the emission surface side that emits light incident from the light-emitting element 12. The curved surface is preferably a convex curved surface that protrudes in a direction away from the light-emitting element 12, but is not limited to a convex curved surface. Examples of curved surfaces include an approximately parabolic shape, an approximately hemispherical shape, and an approximately semi-ellipsoidal shape, but are not limited to these shapes.

The lens array 16 includes, for example, an inorganic material or an organic material that is translucent to the light emitted from the light emitting element 12. The inorganic material includes, for example, silicon oxide (SiO _x ). The organic material may be a polymer resin. The organic material includes, for example, a photosensitive resin such as an ultraviolet curing resin.

In the above description, an example has been described in which the display device 101 according to the first embodiment includes a lens array 16, but the display device 102 according to the second embodiment may also include a lens array 16.

[Modification 11]
FIG. 22 is an XZ cross-sectional view showing an enlarged part of the effective pixel region RE1. FIG. 23 is a YZ cross-sectional view showing an enlarged part of the effective pixel region RE1. As shown in FIG. 22 and FIG. 23, at least some of the filter parts 15R, 15G, 15B among the plurality of filter parts 15R, 15G, 15B and at least some of the filter parts 150 among the plurality of filter parts 150 may be shifted in the in-plane direction of the first surface of the drive substrate 11 with respect to the center position P ₀ of the light emitting element 12. By shifting the filter parts 15R, 15G, 15B and the filter parts 150 in the in-plane direction in this manner, the emission direction of light from the sub-pixel 10 can be controlled. The shift direction of the color filter 15 is selected according to the desired display characteristics. Here, the center position P ₀ of the light emitting element 12 represents the geometric center position of the light emitting element 12 in a planar view.

When the display device 101 includes the lens array 16, at least some of the lenses 161 may be shifted in an in-plane direction of the first surface of the drive substrate 11 with reference to the central position _P0 of the light-emitting element 12. By shifting the lenses 161 in the in-plane direction in this manner, the emission direction of light from the sub-pixels 10 can be controlled.

Details about the shifting of filter sections 15R, 15G, 15B, filter section 150, and lens 161 are explained in <6. Relationship between normals passing through the centers of the light-emitting section, lens member, and wavelength selection section>.

In the above explanation, a modified example of the display device 101 according to the first embodiment has been described, but the configuration of this modified example may be applied to the display device 102 according to the second embodiment, or to the display devices 101 and 102 according to modified examples 1 to 10 and 12. Specifically, for example, it may be applied to the filter unit 150a in modified examples 1 and 2, or to the filter units 151 and 152 in modified example 3.

[Modification 12]
In the first and second embodiments, an example in which the light-emitting element 12 is an OLED element has been described, but the light-emitting element is not limited to this example, and may be, for example, a self-luminous light-emitting element such as an LED (Light Emitting Diode), an inorganic electro-luminescence (IEL) element, a quantum dot light-emitting diode (QLED), or a semiconductor laser element. Two or more types of light-emitting elements may be provided in the display device.

[Modification 13]
In the first and second embodiments, an example has been described in which the display devices 101 and 102 include pixels of three colors. However, the pixel configuration of the display devices 101 and 102 is not limited to this example, and the display devices 101 and 102 may include pixels of two colors or four or more colors.

[Modification 14]
The display devices 101 and 102 according to the first and second embodiments may include a light-emitting element 12 capable of emitting white light, instead of the plurality of light-emitting elements 12R, 12G, and 12B.

[Other Modifications]
The first embodiment, the second embodiment, and modified examples thereof (hereinafter referred to as the "first embodiment, etc.") of the present disclosure have been specifically described above, but the present disclosure is not limited to the first embodiment, etc., and various modifications based on the technical ideas of the present disclosure are possible.

For example, the configurations, methods, processes, shapes, materials, and values given in the first embodiment are merely examples, and different configurations, methods, processes, shapes, materials, and values may be used as necessary.

The configurations, methods, processes, shapes, materials, and numerical values of the first embodiment and the like can be combined with each other without departing from the spirit of this disclosure.

Unless otherwise specified, the materials exemplified in the first embodiment etc. can be used alone or in combination of two or more types.

The present disclosure may also employ the following configuration.
(1)
a plurality of first pixels capable of emitting light of a first color;
a plurality of second pixels capable of emitting light of a second color;
The second pixels are arranged in a plurality of columns,
The second column of pixels includes:
A plurality of first light-emitting elements arranged in a column direction of the column of the second pixels;
a first filter portion provided above the plurality of first light-emitting elements and having the second color;
a plurality of second filter units provided on the upper side of the plurality of first light-emitting elements and at each boundary between the second pixels adjacent in the column direction, the second filter units having a color different from the second color;
Display device.
(2)
The second filter unit is provided on the first filter unit.
A display device according to (1).
(3)
The second filter unit is provided within the first filter unit.
A display device according to (1).
(4)
The thickness of the second filter portion is substantially the same as the thickness of the first filter portion.
The display device according to (3).
(5)
the first filter portion has a surface opposite to a side of the first light emitting element,
A part of the second filter portion protrudes onto the surface of the first filter portion.
The display device according to (3).
(6)
The first filter portion covers the second filter portion.
The display device according to (3).
(7)
The second pixel column further includes a plurality of lenses disposed above the plurality of first light-emitting elements.
The display device according to any one of (1) to (6).
(8)
At least a portion of the plurality of second filter sections is shifted in an in-plane direction with respect to the first light-emitting element.
The display device according to any one of (1) to (7).
(9)
a size of the second pixel in the column direction is larger than a size of the first pixel in the column direction;
The display device according to any one of (1) to (8).
(10)
the first color is red;
The first pixel has a resonator structure.
The display device according to any one of (1) to (9).
(11)
Further comprising a plurality of third pixels capable of emitting light of a third color.
The display device according to any one of (1) to (10).
(12)
The second filter portion has the first color or the third color.
The display device according to (11).
(13)
the first color, the second color, and the third color are different from one another;
each of the first color, the second color, and the third color is a color selected from the group consisting of red, blue, and green;
The tristimulus values X, Y, and Z of the CIE 1931 color system obtained by measuring a white image displayed on the display device from the column direction are approximately equal to each other.
The display device according to (11) or (12).
(14)
The third pixels are arranged in a plurality of columns,
The third column of pixels includes:
A plurality of second light-emitting elements arranged in the column direction;
a third filter portion provided above the plurality of second light-emitting elements and having the third color;
a plurality of fourth filter units provided on the upper side of the plurality of second light-emitting elements and at each boundary between the third pixels adjacent to each other in the column direction, the fourth filter units having a color different from the third color;
The display device according to any one of (11) to (13).
(15)
the first pixel, the second pixel, and the third pixel are arranged in a stripe pattern;
The display device according to any one of (11) to (14).
(16)
the first pixel, the second pixel, and the third pixel are arranged in a square;
The second pixel is disposed adjacent to the first pixel and the third pixel.
The display device according to any one of (11) to (14).
(17)
the column of second pixels further includes a fifth filter portion that is provided within the second pixels in a plan view and has a color different from the second color;
The display device according to any one of (1) to (16).
(18)
The plurality of first light-emitting elements are configured to be capable of emitting white light or the second color light.
The display device according to any one of (1) to (17).
(19)
a plurality of first pixels capable of emitting light of a first color;
a plurality of second pixels capable of emitting light of a second color;
The second pixels are arranged in a plurality of columns,
The second column of pixels includes:
A plurality of first light-emitting elements arranged in a column direction of the column of the second pixels;
a color conversion unit provided above the first light-emitting elements and capable of converting light emitted from the first light-emitting elements into light of the second color;
a plurality of filter units provided on the upper side of the plurality of first light-emitting elements and at each boundary between the second pixels adjacent in the column direction, the filter units having a color different from the second color;
Display device.
(20)
An electronic device comprising the display device according to any one of (1) to (19).

<5 Simulation>
Hereinafter, the present disclosure will be specifically described using simulations, but the present disclosure is not limited to these simulations. In the analysis models shown in Figures 24A to 24D, the same reference numerals are used to denote parts corresponding to the display device 101 according to the first embodiment.

[Simulation 1]
The configuration shown in Fig. 24A was set as an analytical model, and the viewing angle characteristics of the tristimulus Z value were obtained. The results are shown in Fig. 25 (curve L1).

[Simulation 2]
The configuration shown in Fig. 24B was set as an analytical model, and the viewing angle characteristics of the tristimulus Z value were obtained. The results are shown in Fig. 25 (curve L2).

[Simulation 3]
The configuration shown in Fig. 24C was set as an analytical model, and the viewing angle characteristics of the tristimulus Z value were obtained. The results are shown in Fig. 25 (curve L3).

[Simulation 4]
The configuration shown in Fig. 24D was set as an analytical model, and the viewing angle characteristics of the tristimulus Z value were obtained. The results are shown in Fig. 25 (curve L4).

The results of simulations 1 to 4 reveal the following:
By providing the filter section 150 between the sub-pixels 10B adjacent in the Y-axis direction, the viewing angle of the Z value of the tristimulus values can be narrowed.
The viewing angle characteristics of the Z value of the tristimulus values can be changed by changing the arrangement position and thickness of the filter section 150 .

<6. Relationship between normals passing through the centers of the light emitting unit, the lens member, and the wavelength selecting unit>
Below, the relationship between the normal line LN passing through the center of the light-emitting portion, the normal line LN' passing through the center of the lens member, and the normal line LN" passing through the center of the wavelength selection portion will be described. Here, the light-emitting portion is, for example, the light-emitting element 12 in the first embodiment, the second embodiment, or their modified examples. The lens member is, for example, the lens 161 in the modified example 10 or the modified example 11. The wavelength selection portion is, for example, the filter units 15R, 15G, 15B in the first embodiment, the second embodiment, or their modified examples.

The size of the wavelength selection section may be changed as appropriate in response to the light emitted by the light emitting section, or in the case where a light absorbing section (e.g., a black matrix section) is provided between the wavelength selection sections of adjacent light emitting sections, the size of the light absorbing section may be changed as appropriate in response to the light emitted by the light emitting section. The size of the wavelength selection section may be changed as appropriate in response to the distance (offset amount) d ₀ between the normal line passing through the center of the light emitting section and the normal line passing through the center of the wavelength selection section. The planar shape of the wavelength selection section may be the same as, similar to, or different from the planar shape of the lens member.

Below, with reference to Figures 26A, 26B, 26C, and 27, we will explain the relationship between the normals passing through the centers of the light-emitting unit 51, wavelength selection unit 52, and lens member 53 when they are arranged in this order.

As shown in FIG. 26A , the normal LN passing through the center of the light-emitting section 51, the normal LN" passing through the center of the wavelength selection section 52, and the normal LN' passing through the center of the lens member 53 may be coincident. That is, D ₀ = 0 and d ₀ = 0. However, D ₀ represents the distance (offset amount) between the normal LN passing through the center of the light-emitting section 51 and the normal LN' passing through the center of the lens member 53, and d ₀ represents the distance (offset amount) between the normal LN passing through the center of the light-emitting section 51 and the normal LN" passing through the center of the wavelength selection section 52.

As shown in FIG. 26B , the normal line LN passing through the center of the light-emitting section 51 and the normal line LN" passing through the center of the wavelength selection section 52 coincide with each other, but the normal line LN passing through the center of the light-emitting section 51 and the normal line LN" passing through the center of the wavelength selection section 52 may not coincide with the normal line LN' passing through the center of the lens member 53. That is, D ₀ >0 and d ₀ =0 may be satisfied.

As shown in FIG. 26C , the normal line LN passing through the center of the light-emitting section 51, the normal line LN" passing through the center of the wavelength selection section 52, and the normal line LN' passing through the center of the lens member 53 do not coincide with each other, and the normal line LN" passing through the center of the wavelength selection section 52 and the normal line LN' passing through the center of the lens member 53 may coincide with each other. That is, D ₀ >0, d ₀ >0, and D ₀ =d ₀ may be satisfied.

As shown in FIG. 27 , a configuration may be adopted in which the normal line LN passing through the center of the light-emitting section 51, the normal line LN″ passing through the center of the wavelength selecting section 52, and the normal line LN′ passing through the center of the lens member 53 do not all coincide. That is, D ₀ >0, d ₀ >0, and D ₀ ≠ d ₀ may be satisfied. Here, it is preferable that the center of the wavelength selecting section 52 (the position indicated by the black square in FIG. 27 ) is located on a straight line LL connecting the center of the light-emitting section 51 and the center of the lens member 53 (the position indicated by the black circle in FIG. 27 ). Specifically, when the distance in the thickness direction (vertical direction in FIG. 27 ) between the center of the light-emitting section 51 and the center of the wavelength selecting section 52 is LL ₁ , and the distance in the thickness direction between the center of the wavelength selecting section 52 and the center of the lens member 53 is LL ₂ ,
D ₀ >d ₀ >0
Taking into account manufacturing variations,
d ₀ :D ₀ =LL ₁ :(LL ₁ +LL ₂ )
It is preferable to satisfy the following:
Here, the thickness direction refers to the thickness direction of the light emitting section 51 , the wavelength selecting section 52 , and the lens member 53 .

Below, with reference to Figures 28A, 28B, and 29, we will explain the relationship between the normals passing through the centers of the light-emitting unit 51, lens member 53, and wavelength selection unit 52 when they are arranged in this order.

As shown in FIG. 28A , a normal line LN passing through the center of the light emitting section 51, a normal line LN″ passing through the center of the wavelength selecting section 52, and a normal line LN′ passing through the center of the lens member 53 may be configured to coincide with each other. That is, D ₀ >0, d ₀ =0 may be satisfied.

As shown in FIG. 28B , the normal line LN passing through the center of the light-emitting section 51, the normal line LN" passing through the center of the wavelength selection section 52, and the normal line LN' passing through the center of the lens member 53 do not coincide with each other, and the normal line LN" passing through the center of the wavelength selection section 52 and the normal line LN' passing through the center of the lens member 53 may coincide with each other. That is, D ₀ >0, d ₀ >0, and D ₀ =d ₀ may be satisfied.

As shown in FIG. 29 , a configuration may be adopted in which the normal line LN passing through the center of the light-emitting section 51, the normal line LN″ passing through the center of the wavelength selecting section 52, and the normal line LN′ passing through the center of the lens member 53 do not all coincide. Here, it is preferable that the center of the lens member 53 (the position indicated by a black circle in FIG. 29 ) is located on a straight line LL connecting the center of the light-emitting section 51 and the center of the wavelength selecting section 52 (the position indicated by a black square in FIG. 29 ). Specifically, when the distance in the thickness direction (vertical direction in FIG. 29 ) between the center of the light-emitting section 51 and the center of the lens member 53 is LL ₂ and the distance in the thickness direction between the center of the lens member 53 and the center of the wavelength selecting section 52 is LL ₁ , then,
_d0 > _D0 >0
Taking into account manufacturing variations,
D ₀ :d ₀ =LL ₂ :(LL ₁ +LL ₂ )
It is preferable to satisfy the following:
Here, the thickness direction refers to the thickness direction of the light emitting section 51 , the wavelength selecting section 52 , and the lens member 53 .

The filter sections 150, 150a, 151, and 152 in the first embodiment, the second embodiment, and their modified examples may be shifted in the same direction as the wavelength selection section 52 and by the same distance (offset amount) as the wavelength selection section 52.

<7. Examples of resonator structures>
The sub-pixels included in the display device 101 according to the first embodiment, the display device 102 according to the first embodiment, and the display devices 101 and 102 according to their modified examples (hereinafter referred to as "the display device 101 according to the first embodiment, etc.") may be configured to have a resonator structure that resonates light generated by a light-emitting element. The resonator structure will be described below with reference to the drawings. In the following description, the first surface of each layer may be referred to as the upper surface.

(Resonator structure: 1st example)
30A is a schematic cross-sectional view for explaining a first example of a resonator structure. In the following description, the light emitting elements 12 _R , 12 _G , and 12 _B are the same as those in the first embodiment. The OLED layer 122 of the sub-pixel 10R, the OLED layer 122 of the sub-pixel 10G, and the OLED layer 122 of the sub-pixel 10B are respectively referred to as an OLED layer 122 _R and an OLED layer 122 B. Layer _122G may be referred to as OLED layer _122B .

In the first example, the first electrode 121 is formed with a common film thickness in each light-emitting element 12. The same is true for the second electrode 123.

A reflector 71 is disposed under the first electrode 121 of the light-emitting element 12 with an optical adjustment layer 72 sandwiched therebetween. A resonator structure that resonates light generated by the OLED layer 122 is formed between the reflector 71 and the second electrode 123. In the following description, the optical adjustment layers 72 provided corresponding to the sub-pixels 10R, 10G, and 10B, respectively, may be referred to as optical adjustment layers _72R , _72G , and _72B .

The reflector 71 is formed to have a common thickness for each light-emitting element 12. The thickness of the optical adjustment layer 72 varies depending on the color to be displayed by the subpixel. By having the optical adjustment layers _72R , _72G , and _72B have different thicknesses, it is possible to set an optical distance that produces optimal resonance for the wavelength of light corresponding to the color to be displayed.

30A, the upper surfaces of the reflectors 71 in the light-emitting elements _12R , _12G , and _12B are arranged so as to be aligned. As described above, the film thickness of the optical adjustment layer 72 differs depending on the color to be displayed by the subpixel, and therefore the position of the upper surface of the second electrode 123 differs depending on the type of the light-emitting element _12R , _12G , and _12B .

The reflector 71 can be formed using metals such as aluminum (Al), silver (Ag), copper (Cu), etc., or alloys containing these as main components.

The optical adjustment layer 72 can be made of inorganic insulating materials such as silicon nitride (SiN _x ), silicon oxide (SiO _x ), silicon oxynitride (SiO _x N _y ), or organic resin materials such as acrylic resins and polyimide resins. The optical adjustment layer 72 may be a single layer or a laminated film of a plurality of these materials. The number of layers may vary depending on the type of the light emitting element 12.

The first electrode 121 can be formed using a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), or zinc oxide (ZnO).

The second electrode 123 must function as a semi-transmissive reflective film. The second electrode 123 can be formed using magnesium (Mg) or silver (Ag), or a magnesium-silver alloy (MgAg) containing these as the main components, or an alloy containing an alkali metal or an alkaline earth metal.

(Resonator structure: second example)
FIG. 30B is a schematic cross-sectional view for explaining the second example of the resonator structure.

In the second example, the first electrode 121 and the second electrode 123 are also formed with a common film thickness in each light-emitting element 12.

In the second example, a reflector 71 is also disposed under the first electrode 121 of the light-emitting element 12, with the optical adjustment layer 72 sandwiched between them. A resonator structure that resonates the light generated by the OLED layer 122 is formed between the reflector 71 and the second electrode 123. As in the first example, the reflector 71 is formed with a common thickness for each light-emitting element 12, and the thickness of the optical adjustment layer 72 differs depending on the color to be displayed by the subpixel.

In the first example shown in FIG. 30A , the upper surfaces of the reflectors 71 in the light-emitting elements _12R , _12G , and _12B are arranged so as to be aligned, and the position of the upper surface of the second electrode 123 differs depending on the type of the light-emitting element _12R , _12G , and _12B .

30B, the upper surfaces of the second electrodes 123 are arranged to be aligned for the light-emitting elements _12R , _12G , and _12B . To align the upper surfaces of the second electrodes 123, the upper surfaces of the reflectors 71 for the light-emitting elements _12R , _12G , and _12B are arranged to be different depending on the type of the light-emitting element _12R , _12G , and _12B . For this reason, the lower surface of the reflector 71 (in other words, the upper surface of the base layer (insulating layer) 73) has a stepped shape depending on the type of the light-emitting element 12.

The materials constituting the reflector 71, the optical adjustment layer 72, the first electrode 121, and the second electrode 123 are the same as those described in the first example, so the description will be omitted.

(Resonator structure: 3rd example)
31A is a schematic cross-sectional view for explaining a third example of the resonator structure. In the following description, the reflectors 71 provided corresponding to the sub-pixels 10R, 10G, and 10B are These reflectors are sometimes referred to as _71R , _71G , and _71B .

In the third example, the first electrode 121 and the second electrode 123 are also formed with a common film thickness in each light-emitting element 12.

Also in the third example, a reflector 71 is disposed under the first electrode 121 of the light-emitting element 12 with an optical adjustment layer 72 sandwiched therebetween. A resonator structure that resonates the light generated by the OLED layer 122 is formed between the reflector 71 and the second electrode 123. As in the first and second examples, the film thickness of the optical adjustment layer 72 varies depending on the color to be displayed by the subpixel. As in the second example, the upper surface of the second electrode 123 is disposed so as to be aligned with the light-emitting elements _12R , _12G , and _12B .

In the second example shown in FIG. 31B, the bottom surface of the reflector 71 has a stepped shape according to the type of light-emitting element 12 in order to align the top surface of the second electrode 123.

31A, the film thickness of the reflector 71 is set to be different depending on the types of the light-emitting elements _12R , _12G , and _12B . More specifically, the film thickness is set so that the bottom surfaces of the reflectors _71R , _71G , and _71B are aligned.

The materials constituting the reflector 71, the optical adjustment layer 72, the first electrode 121, and the second electrode 123 are the same as those described in the first example, so a description thereof will be omitted.

(Resonator structure: 4th example)
31B is a schematic cross-sectional view for explaining the fourth example of the resonator structure. In the following explanation, the first electrodes 121 provided corresponding to the sub-pixels 10R, 10G, and 10B are , first electrodes _121R , _121G , and _121B .

In the first example shown in FIG. 31A, the first electrodes 121 and second electrodes 123 of each light-emitting element 12 are formed to have the same film thickness. A reflector 71 is disposed under the first electrodes 121 of the light-emitting elements 12 with an optical adjustment layer 72 sandwiched therebetween.

In contrast, in a fourth example shown in FIG. 31B, the optical adjustment layer 72 is omitted, and the film thickness of the first electrode 121 is set to be different depending on the type of the light emitting elements _12R , _12G , and _12B .

The reflector 71 is formed to have a common thickness for each light-emitting element 12. The thickness of the first electrode 121 varies depending on the color to be displayed by the subpixel. By having the first electrodes _121R , _121G , and _121B have different thicknesses, it is possible to set an optical distance that produces optimal resonance for the wavelength of light corresponding to the color to be displayed.

The materials constituting the reflector 71, the optical adjustment layer 72, the first electrode 121, and the second electrode 123 are the same as those described in the first example, so the description will be omitted.

(Resonator structure: 5th example)
FIG. 32A is a schematic cross-sectional view for explaining a fifth example of the resonator structure. FIG.

In the first example shown in FIG. 30A, the first electrode 121 and the second electrode 123 are formed to a common thickness in each light-emitting element 12. A reflector 71 is disposed under the first electrode 121 of the light-emitting element 12 with an optical adjustment layer 72 sandwiched therebetween.

32A , the optical adjustment layer 72 is omitted, and instead, an oxide film 74 is formed on the surface of the reflector 71. The thickness of the oxide film 74 is set to be different depending on the type of the light-emitting elements _12R , 12G, and _12B . In the following description, the oxide films 74 provided corresponding to the sub-pixels 10R, 10G, and 10B, respectively, may be referred to as oxide films _74R , _74G , _{and 74B} .

The thickness of the oxide film 74 varies depending on the color to be displayed by the sub-pixel. By having the oxide films _74R , _74G , and _74B have different thicknesses, it is possible to set an optical distance that produces optimal resonance for the wavelength of light corresponding to the color to be displayed.

The oxide film 74 is a film formed by oxidizing the surface of the reflector 71, and is made of, for example, aluminum oxide, tantalum oxide, titanium oxide, magnesium oxide, zirconium oxide, etc. The oxide film 74 functions as an insulating film for adjusting the optical path length (optical distance) between the reflector 71 and the second electrode 123.

The oxide film 74 having a thickness that varies depending on the type of the light emitting elements 12 _R , 12 _G , and 12 _B can be formed, for example, as follows.

First, fill the container with an electrolyte, and immerse the substrate on which the reflector 71 is formed in the electrolyte. Also, place an electrode so that it faces the reflector 71.

Then, a positive voltage is applied to the reflector 71 with the electrode as a reference, and the reflector 71 is anodized. The thickness of the oxide film formed by anodization is proportional to the voltage value to the electrode. Therefore, anodization is performed while a voltage according to the type of light-emitting element 12 is applied to each of the reflectors _71R , _71G , and _71B . This allows oxide films 74 with different thicknesses to be formed all at once.

The materials constituting the reflector 71, the first electrode 121, and the second electrode 123 are the same as those described in the first example, so a description thereof will be omitted.

(Resonator structure: 6th example)
FIG. 32B is a schematic cross-sectional view for explaining the sixth example of the resonator structure.

In the sixth example, the light-emitting element 12 is configured by laminating a first electrode 121, an OLED layer 122, and a second electrode 123. However, in the sixth example, the first electrode 121 is formed so as to function both as an electrode and a reflector. The first electrode (doubles as a reflector) 121 is formed of a material having an optical constant selected according to the type of the light-emitting elements _12R , _12G , and _12B . By varying the phase shift caused by the first electrode (doubles as a reflector) 121, it is possible to set an optical distance that generates an optimal resonance for the wavelength of light according to the color to be displayed.

The first electrode (doubles as a reflector) 121 can be made of a single metal such as aluminum (Al), silver (Ag), gold (Au), copper (Cu), or an alloy mainly made of these metals. For example, the first electrode (doubles as a reflector) _121R of the light-emitting element _12R can be made of copper (Cu), and the first electrode (doubles as a reflector) _121G of the light-emitting element _12G and the first electrode (doubles as a reflector) _121B of the light-emitting element _12B can be made of aluminum.

The materials constituting the second electrode 123 are the same as those described in the first example, so the description will be omitted.

(Resonator structure: 7th example)
FIG. 33 is a schematic cross-sectional view for explaining a seventh example of the resonator structure.

The seventh example is basically a configuration in which the sixth example is applied to the light emitting elements 12 _R and 12 _G , and the first example is applied to the light emitting element 12 _B. Even in this configuration, it is possible to set an optical distance that produces optimal resonance for the wavelength of light corresponding to the color to be displayed.

The first electrodes (which also serve as reflectors) _121R , _121G used in the light-emitting elements _12R , _12G can be made of a single metal such as aluminum (Al), silver (Ag), gold (Au), copper (Cu), or an alloy containing these as its main component.

The materials constituting the reflector _71B , the optical adjustment layer _72B and the first electrode _121B used in the light emitting element _12B are similar to those described in the first example, and therefore description thereof will be omitted.

＜8 Application Examples＞
(Electronic devices)
The display device 101 according to the first embodiment may be provided in various electronic devices. The display device 101 according to the first embodiment is particularly suitable for eyewear devices such as head-mounted displays, or electronic viewfinders for video cameras or single-lens reflex cameras that require high resolution and are used in a magnified state near the eyes.

(Specific Example 1)
34A and 34B show an example of the external appearance of a digital still camera 310. This digital still camera 310 is a lens-interchangeable single-lens reflex type, and has an interchangeable photographing lens unit (interchangeable lens) 312 approximately in the center of the front of a camera main body (camera body) 311, and a grip part 313 for the photographer to hold on the left side of the front.

A monitor 314 is provided at a position shifted to the left from the center of the back of the camera body 311. An electronic viewfinder (eyepiece window) 315 is provided at the top of the monitor 314. By looking through the electronic viewfinder 315, the photographer can visually confirm the optical image of the subject guided by the photographing lens unit 312 and determine the composition. The electronic viewfinder 315 is equipped with any of the display devices 101 and the like according to the first embodiment.

(Specific Example 2)
35 shows an example of the appearance of the head mounted display 320. The head mounted display 320 is an example of an eyewear device. The head mounted display 320 has, for example, ear hooks 322 for wearing on the user's head on both sides of a glasses-shaped display unit 321. The display unit 321 includes any one of the display devices 101 according to the first embodiment.

(Specific Example 3)
36 shows an example of the appearance of a television device 330. This television device 330 has, for example, an image display screen unit 331 including a front panel 332 and a filter glass 333, and this image display screen unit 331 includes any one of the display devices 101 according to the first embodiment, etc.

(Specific Example 4)
37 shows an example of the appearance of a see-through head mounted display 340. The see-through head mounted display 340 is an example of an eyewear device. The see-through head mounted display 340 includes a main body 341, an arm 342, and a lens barrel 343.

Main body 341 is connected to arm 342 and glasses 350. Specifically, the end of the long side of main body 341 is connected to arm 342, and one side of main body 341 is connected to glasses 350 via a connecting member. Note that main body 341 may also be worn directly on the head of the human body.

Main body 341 incorporates a control board for controlling the operation of see-through head mounted display 340, and a display unit. Arm 342 connects main body 341 to barrel 343 and supports barrel 343. Specifically, arm 342 is coupled to an end of main body 341 and an end of barrel 343, respectively, and fixes barrel 343. Arm 342 also incorporates a signal line for communicating data related to images provided from main body 341 to barrel 343.

The telescope tube 343 projects image light provided from the main body 341 via the arm 342 through the eyepiece 351 toward the eye of the user wearing the see-through head mounted display 340. In this see-through head mounted display 340, the display unit of the main body 341 includes any one of the display devices 101 according to the first embodiment.

(Specific Example 5)
38 shows an example of the appearance of a smartphone 360. The smartphone 360 includes a display unit 361 that displays various information, an operation unit 362 that includes buttons that accept operation inputs by a user, and the like. The display unit 361 includes any one of the display devices 101 and the like according to the first embodiment.

(Specific Example 6)
The display device 101 according to the first embodiment and the like may be provided in various displays provided in vehicles.

FIGS. 39A and 39B are diagrams showing an example of the internal configuration of a vehicle 500 equipped with various displays. Specifically, FIG. 39A is a diagram showing an example of the interior of the vehicle 500 from the rear to the front, and FIG. 39B is a diagram showing an example of the interior of the vehicle 500 from diagonally rear to diagonally front.

The vehicle 500 includes a center display 501, a console display 502, a head-up display 503, a digital rear mirror 504, a steering wheel display 505, and a rear entertainment display 506. At least one of these displays includes any of the display devices 101, etc., according to the first embodiment. For example, all of these displays may include any of the display devices 101, etc., according to the first embodiment.

The center display 501 is disposed in a portion of the dashboard facing the driver's seat 508 and the passenger seat 509. Although Figs. 39A and 39B show an example of a horizontally elongated center display 501 extending from the driver's seat 508 side to the passenger seat 509 side, the screen size and location of the center display 501 are arbitrary. The center display 501 can display information detected by various sensors. As a specific example, the center display 501 can display an image captured by an image sensor, an image of the distance to an obstacle in front of or to the side of the vehicle 500 measured by a ToF sensor, the body temperature of a passenger detected by an infrared sensor, and the like. The center display 501 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication/identification-related information, and entertainment-related information.

The safety-related information includes information such as detection of dozing, looking away, mischief by children in the vehicle, whether or not a seat belt is fastened, and detection of an occupant being left behind, and is information detected, for example, by a sensor arranged on the back side of the center display 501. The operation-related information is obtained by detecting gestures related to the operation of the occupant using a sensor. The detected gestures may include operations of various facilities in the vehicle 500. For example, operations of the air conditioning equipment, navigation device, AV device, lighting device, etc. are detected. The life log includes the life log of all occupants. For example, the life log includes a record of the actions of each occupant while on board. By acquiring and saving the life log, it is possible to confirm the condition of the occupant at the time of the accident. The health-related information is obtained by detecting the body temperature of the occupant using a sensor such as a temperature sensor, and inferring the health condition of the occupant based on the detected body temperature. Alternatively, the face of the occupant may be captured using an image sensor, and the health condition of the occupant may be inferred from the facial expression captured in the image. Furthermore, the occupant may be spoken to by an automated voice and the occupant's health condition may be inferred based on the occupant's responses. Authentication/identification related information includes a keyless entry function that uses a sensor to perform face authentication, a function for automatically adjusting the seat height and position by face recognition, etc. Entertainment related information includes a function for detecting operation information of an AV device by an occupant using a sensor, a function for recognizing the occupant's face using a sensor and providing content suitable for the occupant via an AV device, etc.

The console display 502 can be used, for example, to display life log information. The console display 502 is disposed near the shift lever 511 on the center console 510 between the driver's seat 508 and the passenger seat 509. The console display 502 can also display information detected by various sensors. The console display 502 may also display an image of the surroundings of the vehicle captured by an image sensor, or an image showing the distance to obstacles around the vehicle.

The head-up display 503 is virtually displayed behind the windshield 512 in front of the driver's seat 508. The head-up display 503 can be used to display, for example, at least one of safety-related information, operation-related information, a life log, health-related information, authentication/identification-related information, and entertainment-related information. Since the head-up display 503 is often virtually positioned in front of the driver's seat 508, it is suitable for displaying information directly related to the operation of the vehicle 500, such as the speed of the vehicle 500 and the remaining fuel (battery) level.

The digital rear-view mirror 504 can not only display the rear of the vehicle 500, but can also display the state of passengers in the back seats, so by placing a sensor on the back side of the digital rear-view mirror 504, it can be used to display life log information, for example.

The steering wheel display 505 is disposed near the center of the steering wheel 513 of the vehicle 500. The steering wheel display 505 can be used to display, for example, at least one of safety-related information, operation-related information, life log, health-related information, authentication/identification-related information, and entertainment-related information. In particular, since the steering wheel display 505 is located near the driver's hands, it is suitable for displaying life log information such as the driver's body temperature, and for displaying information related to the operation of AV equipment, air conditioning equipment, etc.

The rear entertainment display 506 is attached to the rear side of the driver's seat 508 and passenger seat 509, and is intended for viewing by rear seat passengers. The rear entertainment display 506 can be used to display at least one of safety-related information, operation-related information, life log, health-related information, authentication/identification-related information, and entertainment-related information, for example. In particular, since the rear entertainment display 506 is located in front of the rear seat passengers, information related to the rear seat passengers is displayed on the rear entertainment display 506. For example, the rear entertainment display 506 may display information related to the operation of AV equipment or air conditioning equipment, or may display the results of measuring the body temperature of the rear seat passengers using a temperature sensor.

A sensor may be arranged on the back side of the display device 101, etc., so that the distance to an object in the vicinity can be measured. Optical distance measurement methods are broadly divided into passive and active types. Passive types measure distance by receiving light from an object without projecting light from the sensor onto the object. Passive types include the lens focusing method, the stereo method, and the monocular vision method. Active types measure distance by projecting light onto an object and receiving the light reflected from the object with a sensor. Active types include the optical radar method, the active stereo method, the photometric stereo method, the moire topography method, and the interference method. The display device 101, etc. according to the first embodiment can be applied to any of these distance measurement methods. By using a sensor arranged on the back side of the display device 101, the above-mentioned passive or active distance measurement can be performed.

10R, 10G, 10B Sub-pixels (first pixel, second pixel, third pixel)
11 Drive substrate 111 Pad portion 12R, 12G, 12B Light emitting element (first light emitting element, second light emitting element)
121 First electrode 122 OLED layer 123 Second electrode 13 Protective layer 14 Planarization layer 15 Color filter 15R Filter portion (first filter portion or third filter portion)
15G Filter section (first filter section or third filter section)
15B Filter section (first filter section or third filter section)
150, 151, 152 Filter section (second filter section or fourth filter section)
150a Filter section (fifth filter section)
16 Lens array 161 Lens 101, 102 Display device 310 Digital still camera 320 Head mounted display 330 Television device 340 See-through head mounted display 360 Smartphone 500 Vehicle RE1 Effective pixel area RE2 Peripheral area

Claims (20)

a plurality of first pixels capable of emitting light of a first color;
a plurality of second pixels capable of emitting light of a second color;
The second pixels are arranged in a plurality of columns,
The second column of pixels includes:
A plurality of first light-emitting elements arranged in a column direction of the column of the second pixels;
a first filter portion provided above the plurality of first light-emitting elements and having the second color;
a plurality of second filter units provided on the upper side of the plurality of first light-emitting elements and at each boundary between the second pixels adjacent in the column direction, the second filter units having a color different from the second color;
Display device. The second filter unit is provided on the first filter unit.
The display device according to claim 1 . The second filter unit is provided within the first filter unit.
The display device according to claim 1 . The thickness of the second filter portion is substantially the same as the thickness of the first filter portion.
The display device according to claim 3 . the first filter portion has a surface opposite to a side of the first light emitting element,
A part of the second filter portion protrudes onto the surface of the first filter portion.
The display device according to claim 3 . The first filter portion covers the second filter portion.
The display device according to claim 3 . The second pixel column further includes a plurality of lenses disposed above the plurality of first light-emitting elements.
The display device according to claim 1 . At least a portion of the plurality of second filter sections is shifted in an in-plane direction with respect to the first light-emitting element.
The display device according to claim 1 . a size of the second pixel in the column direction is larger than a size of the first pixel in the column direction;
The display device according to claim 1 . the first color is red;
The first pixel has a resonator structure.
The display device according to claim 1 . Further comprising a plurality of third pixels capable of emitting light of a third color.
The display device according to claim 1 . The second filter portion has the first color or the third color.
The display device according to claim 11. the first color, the second color, and the third color are different from one another;
each of the first color, the second color, and the third color is a color selected from the group consisting of red, blue, and green;
The tristimulus values X, Y, and Z of the CIE 1931 color system obtained by measuring a white image displayed on the display device from the column direction are approximately equal to each other.
The display device according to claim 11. The third pixels are arranged in a plurality of columns,
The third column of pixels includes:
A plurality of second light-emitting elements arranged in the column direction;
a third filter portion provided above the plurality of second light-emitting elements and having the third color;
a plurality of fourth filter units provided on the upper side of the plurality of second light-emitting elements and at each boundary between the third pixels adjacent to each other in the column direction, the fourth filter units having a color different from the third color;
The display device according to claim 11. the first pixel, the second pixel, and the third pixel are arranged in a stripe pattern;
The display device according to claim 11. the first pixel, the second pixel, and the third pixel are arranged in a square;
The second pixel is disposed adjacent to the first pixel and the third pixel.
The display device according to claim 11. the column of second pixels further includes a fifth filter portion that is provided within the second pixels in a plan view and has a color different from the second color;
The display device according to claim 1 . The plurality of first light-emitting elements are configured to be capable of emitting white light or the second color light.
The display device according to claim 1 . a plurality of first pixels capable of emitting light of a first color;
a plurality of second pixels capable of emitting light of a second color;
The second pixels are arranged in a plurality of columns,
The second column of pixels includes:
A plurality of first light-emitting elements arranged in a column direction of the column of the second pixels;
a color conversion unit provided above the first light-emitting elements and capable of converting light emitted from the first light-emitting elements into light of the second color;
a plurality of filter units provided on the upper side of the plurality of first light-emitting elements and at each boundary between the second pixels adjacent in the column direction, the filter units having a color different from the second color;
Display device. An electronic device equipped with the display device according to claim 1.

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