WO2016148431A1 - Structure de panneau ayant une fonction d'ajustement de transmittance de lumière, et fenêtre intelligente et dispositif d'affichage utilisant celle-ci - Google Patents

Structure de panneau ayant une fonction d'ajustement de transmittance de lumière, et fenêtre intelligente et dispositif d'affichage utilisant celle-ci Download PDF

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WO2016148431A1
WO2016148431A1 PCT/KR2016/002331 KR2016002331W WO2016148431A1 WO 2016148431 A1 WO2016148431 A1 WO 2016148431A1 KR 2016002331 W KR2016002331 W KR 2016002331W WO 2016148431 A1 WO2016148431 A1 WO 2016148431A1
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electric field
layer
nanocapsule
substrate
electrode layer
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English (en)
Korean (ko)
Inventor
황현하
강승곤
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IMAGELAB CO Ltd
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IMAGELAB CO Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes

Definitions

  • the present invention relates to a display panel structure, and more particularly, to a panel structure capable of controlling light transmission and expressing a white / black state without a polarizing plate and a smart window using the same.
  • the smart window refers to a window that can freely control the transmittance of sunlight, and is also called an electronic curtain, a variable transmittance glass, a dimmed glass, and the like.
  • the smart window is to solve such a conventional problem, and is an active product that can artificially adjust light transmittance and color, and is currently recognized as one of the next generation products in the glass field.
  • Patent Document 1 a smart window using an electrochromic material
  • Patent Document 2 a smart window using a graphene
  • the electrochromic smart window is manufactured by coating and depositing a transparent electrode and a discoloring material on a glass layer, and there is a problem that the entire smart window becomes a defective product when a foreign material is introduced or a problem occurs during the coating and deposition process.
  • the smart window using graphene has a problem in that it is still limited in mass production due to its production cost and process limitations.
  • the smart window of the PDLC method is a transmission mode is implemented when the voltage is applied, the blocking mode is implemented when the voltage is not applied, the user is used most of the time in the transparent state, that is, the transmission mode through which light passes, In special cases, when using the blocking mode, there was an inefficiency that external power must be continuously supplied and consumed in order to execute the transmission mode.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a panel structure capable of actively adjusting the light transmission amount as necessary, and a smart window and a display device using the same.
  • the present invention can simplify the manufacturing process, eliminate the problem of component deformation and consequent product failure according to use, the transmission mode can be implemented when no voltage is applied, and the blocking mode can be implemented when voltage is applied.
  • An object of the present invention is to provide a panel structure, a smart window, and a display device using the same.
  • a panel structure according to the present invention for achieving the above object is a first substrate, a first transverse field type electrode layer formed on the first substrate in the first electric field direction, and a first formed on the first substrate A first panel comprising a nanocapsule layer; And a second substrate, a second transverse electric field electrode layer formed on the second substrate in a second electric field direction, and a second nanocapsule layer formed on the second substrate and bonded to the first panel. And a second panel.
  • the first nanocapsule layer and the second nanocapsule layer may include a plurality of nanocapsules including a core material in which a liquid crystal and a dichroic dye are mixed, and a shell material forming an outer wall of the core material; And a polymer matrix having the plurality of nanocapsules disposed therein, wherein the first transverse electric field electrode layer and the second transverse electric field electrode layer are formed to be different from each other in the first electric field direction and the second electric field direction. It is characterized by.
  • the panel structure having a light transmission control function it is possible to actively drive the display of the incident light transmission / blocking mode to the black / white state without using a separate polarizing plate.
  • the manufacturing process is simple, so that display characteristics can be realized at a relatively low cost compared to the conventional one, and the transmission mode to the white state can be expressed when voltage is not applied, and thus, especially when applied to a smart window, power consumption can be greatly reduced. have.
  • FIG. 1 is a schematic view showing a cross-sectional structure of a first panel of a panel structure according to the present invention.
  • FIG. 2 is a schematic view showing a cross-sectional structure of a second panel of the panel structure according to the present invention.
  • FIG 3 is a cross-sectional view of a panel structure having a light transmission control function formed by joining a first panel and a second panel of the present invention.
  • Figure 5 (a) is a scanning electron microscope (SEM) photograph of the surface of the nano liquid crystal layer according to the present invention.
  • Figure 5 (b) is analytical data showing the particle size distribution of the nanocapsules of Figure 5 (a).
  • 6 (a) and 6 (b) are plan views showing electrode structures, first and second electric field directions of the first transverse electric field electrode layer and the second transverse electric field electrode layer according to the present invention, respectively.
  • FIG 7 is an operation state diagram showing the operation when the voltage is not applied to the panel structure according to an embodiment of the present invention.
  • FIG 8 is an operational state diagram showing an operation when the voltage is applied to the panel structure according to an embodiment of the present invention.
  • first substrate 20 second group
  • on or above means to be located above or below the target portion, and does not necessarily mean to be located above the gravity direction.
  • a portion such as an area, a plate, etc. is said “on or on top of” another part, it is not only in contact with or spaced apart from another part, but also in the middle of another part. It also includes cases where there is.
  • one component when one component is referred to as “connected” or “connected” with another component, the one component may be directly connected or directly connected to the other component, but in particular It is to be understood that, unless there is an opposite substrate, it may be connected or connected via another component in the middle.
  • FIG. 1 is a schematic diagram showing a cross-sectional structure of a first panel of a panel structure according to the present invention
  • FIG. 2 is a schematic diagram showing a cross-sectional structure of a second panel of a panel structure according to the present invention
  • FIG. It is sectional drawing of the panel structure provided with the light transmittance adjustment function formed by joining a 1st panel and a 2nd panel.
  • the panel structure having a light transmission control function according to the present invention is configured of a structure in which the first panel and the second panel are bonded to each other.
  • the first panel includes a first substrate 10, a first nanocapsule layer 50, and a first transverse electric field electrode layer 30 in a first electric field direction
  • the second panel includes a second substrate 20.
  • the first transverse electric field electrode layer 30 and the second transverse electric field electrode layer 40 may be formed to be different from each other in the first electric field direction and the second electric field direction.
  • the first substrate 10 of the present invention is a thin plate made of a transparent material, specifically, a glass substrate made of glass material, as well as a thin plastic substrate having elastic flexibility capable of elastic deformation.
  • plastic substrate when employed, it should be composed of a substrate having excellent light transmittance and no birefringence effect.
  • Plastic substrates meeting the above objectives include Tri Acetyl Cellulose (TAC), Polyimide (PI), Polyethersulfone (PES), Polyethylene Terephthalate (PET), and Polyethylene Naphthalate (PEN).
  • TAC Tri Acetyl Cellulose
  • PI Polyimide
  • PES Polyethersulfone
  • PET Polyethylene Terephthalate
  • PEN Polyethylene Naphthalate
  • PAR polyarylate
  • the first nanocapsule layer 50 of the present invention is formed on the first substrate 10 to perform the function of transmitting or absorbing the incident light as it is to the core component to implement the transmittance control or gray scale expression of the incident light Corresponding.
  • the first nanocapsule layer 50 prepares a coating solution by mixing a plurality of nanocapsules 54 with a binder, and then, the first nanocapsule layer 50 is formed on the first substrate 10 on which the first transverse electric field electrode layer 30 is formed. It is formed by coating and curing.
  • the first nanocapsule layer 50 may include a nanocapsule composed of a core material in which a liquid crystal 51 and a dichroic dye 53 are mixed, and a shell material 52 forming an outer wall of the core material. 54) and a polymer matrix 55 with a plurality of nanocapsules 54 disposed therein.
  • the first nanocapsule layer 50 has optical isotropicity when the liquid crystal 51 of the nanocapsule 54 included therein has no voltage applied thereto, and has an electric field intensity (E) when the voltage is applied.
  • E electric field intensity
  • the liquid crystal 51 of the core material is at least one selected from liquid crystals commonly used in liquid crystal display devices such as nematic, smectic, cholesteric, and chiral smectic. It can be configured as one.
  • the dichroic dye 53 of the core material uses one having the following characteristics. That is, the dichroic dye 53 has a dichroism with a large difference in absorbance in the long axis direction and a short axis direction of the molecule, a dyeability having a high affinity with respect to the liquid crystal 51 which is a host material, and an orientation of the liquid crystal 51. It is used having an orientation that can be easily oriented in conjunction with durability that can withstand sufficiently under the manufacturing process and use conditions.
  • the shell material 52 initially surrounds the outer surface of the core material in the form of a spherical droplet, so that the core material remains trapped inside the shell material 52.
  • the shell material 52 may be largely formed of a water soluble polymer or a water insoluble polymer.
  • the shell material 52 when the shell material 52 is formed of a water-soluble polymer, polyvinyl alcohol (PVA), Starch, Carboxyl methyl cellulose (CMC), methyl From cellulose, ethyl cellulose, polyvinyl pyrrolidone, gelatin, alginate, casein and gum Arabia At least one selected may be formed.
  • PVA polyvinyl alcohol
  • CMC Carboxyl methyl cellulose
  • methyl From cellulose ethyl cellulose
  • polyvinyl pyrrolidone polyvinyl pyrrolidone
  • gelatin alginate
  • casein and gum Arabia At least one selected may be formed.
  • the shell material 52 is formed of a water-soluble polymer, polymethylmethacrylate (PMMA), polyurea, polyurethane, urea formaldehyde (Urea formaldehyde, UF) ) And at least one selected from amino resins such as melamine formaldehyde (MF).
  • PMMA polymethylmethacrylate
  • MF melamine formaldehyde
  • the shell material (ie, the outer wall) 52 may be formed in a double shell structure.
  • different kinds of shell materials are configured to form an inner shell and an outer shell.
  • the inner shell is formed first, and then the outer shell is sequentially formed.
  • the double shell structure has better ease of solvent anchoring energy (Anchoring energy) control and excellent solvent resistance characteristics than the single shell structure.
  • the inner shell material may be formed of at least one selected from water-soluble polymers having soft properties such as gelatin, arabic gum, and polyvinyl alcohol.
  • the outer shell material may be formed of at least one selected from oil-soluble polymers, amino resins, polyamide-epichlorohydrin resins, and formaldehyde resins. .
  • the nanocapsule 54 may be manufactured by using a complex phase separation method, a membrane emulsification method, an in-situ polymerization method, an interfacial polymerization method, or the like.
  • the polymer matrix 55 of the present invention is constrained to be fixed in a state in which a plurality of nanocapsules 54 are dispersedly disposed therein, and the nanocapsules 54 thus dispersed are disposed on the first substrate 10. It means a binder that functions to be fixed.
  • the polymer matrix 55 can be largely formed using a water soluble polymer binder or a water dispersible binder.
  • the water-soluble polymer binder is polyvinyl alcohol (PVA), Starch, Methoxy cellulose, Hydroxyethylcellulose, Carboxyl methyl Carboxyl methyl cellulose (CMC), methyl cellulose, ethyl cellulose, polyacrylate soda, acryl amide / acrylate copolymer copolymer, acrylamide / acrylate / methacrylic acid terpolymer, polyacrylamide, alginate soda, polyvinylpyrrolidone, It may be formed of at least one selected from gelatin, alginate, casein and gum Arabia.
  • PVA polyvinyl alcohol
  • CMC Carboxyl methyl Carboxyl methyl cellulose
  • ethyl cellulose polyacrylate soda, acryl amide / acrylate copolymer copolymer, acrylamide / acrylate / methacrylic acid terpolymer, polyacrylamide, alginate soda, polyvinylpyrrolidone, It may be
  • the water-dispersing binder is an alkyd resin, polyamide epichlorohydrin resin, polyurethane resin, urea formaldehyde resin, melamine Formaldehyde resin, melamine urea formaldehyde resin, acrylic copolymer latex, styrene / butadiene copolymer latex, styrene Styrene / butadiene / acryl copolymer latex, vinyl acetate resin emulsion, vinyl acetate / acrylate copolymer emulsion, styrene / acrylic copolymer emulsion Styrene / acrylate copolymer emulsion and acrylate resin emulsion (Acryla) te resin emulsion).
  • the second substrate 20 of the present invention is a thin plate made of a transparent material.
  • the second substrate 20 is made of a glass substrate made of glass material, as well as a thin plastic substrate having elastic flexibility. can do.
  • the second nanocapsule layer 60 of the present invention is formed on the second substrate 20 to transmit or absorb incident light as it is, thereby controlling the transmittance of the incident light together with the first nanocapsule layer 50 to gray scale.
  • the second nanocapsule layer 60 is a shell material 62 that forms an outer wall of the core material and a core material in which a liquid crystal 51 and a dichroic dye 63 are mixed. It consists of a nano-capsule 64 made of, and a polymer matrix 65 in which a plurality of nano-capsules 64 are disposed.
  • the second nanocapsule layer 60 is prepared by mixing a plurality of nanocapsules 64 with a binder to prepare a coating solution, and then forming the second transverse electric field electrode layer 40 on the second substrate 20. It can be formed by coating on and curing.
  • the core material 61, the shell material 62, and the polymer matrix 65 constituting the second nanocapsule layer 60 are the same as those of the first nanocapsule layer 50, a detailed description thereof will be omitted. do.
  • the second nanocapsule layer 60 may have optical isotropy when the liquid crystal 61 of the nanocapsule 64 included in the second nanocapsule layer 60 has no voltage applied thereto. Isotropic) and is configured to exhibit optical anisotropy in proportion to the square of the electric field (E) upon application of voltage.
  • the alignment direction of the liquid crystal 61 and the dichroic dye 63 included in the nanocapsule 64 of the second nanocapsule layer 60 is the first nanocapsule. It is characterized in that it is configured to be different from the orientation direction of the liquid crystal 51 and the dichroic dye 53 contained in the nanocapsule 54 of the layer 50.
  • the first nanocapsule layer 50 and the second nanocapsule layer 60 have a pair of polarizing plate functions configured so that the polarization axes are orthogonal to each other, depending on the characteristics in the orientation direction realized when voltage is applied. It is possible to perform, so that it is possible to control the light transmission. Detailed description thereof will be described later.
  • the first and second nanocapsule layers 50 and 60 having the features described above form the nanocapsules 54 and 64 in an average diameter size of 1/4 or less (200 nm or less) of the maximum wavelength of visible light.
  • the nanocapsules 54 and 64 have a filling rate within the range of 30 to 70% within each polymer matrix 55 and 65 and are arranged to be dispersed, they express different optical characteristics.
  • the panel structure of the present invention combines a pair of transverse field type electrode layers 30 and 40 with a pair of nanocapsule layers 50 and 60 having such optical properties, thereby driving a smart window that is driven in a completely new way. To the display device.
  • FIG. 4 is a comparative experimental example of nanoemulsion and macroemulsion, in which the sample contained in the left vial bottle of FIG. 4 is a nanoemulsion in which the nanocapsules are transformed into an average diameter size of 50 nm, and the right vial
  • the sample in the bottle is a macro emulsion (Macro Emulsion) consisting of a liquid crystal capsule having an average diameter size of 1.0 ⁇ m.
  • the inventors of the present invention through a comparative experiment as shown in Figure 4, it can be confirmed that the light is scattered or passed through the medium as it is, depending on the size of the particles contained in a medium or pass through without any effect there was.
  • the nanocapsules 54 and 64 are formed in a nano size smaller than the wavelength of visible light (specifically, an average diameter size smaller than 1/4 of the maximum visible light wavelength), a part of the visible light incident on the sample is intact.
  • the nanocapsules 54 and 64 were formed in an average diameter size of 100 nm or less, scattering hardly occurred, and most incident light was transmitted as it is.
  • FIG. 5 (a) is a scanning electron microscope (SEM) image of the surface of the nano liquid crystal layer according to the present invention, and the ones dispersed in the form of a plurality of holes correspond to the nanocapsule 54 of the present invention.
  • . 5 (b) is analytical data showing a particle size distribution of the nanocapsule of FIG. 5 (a).
  • the reason why the nanocapsules are in the form of holes is that the liquid crystal is filled inside each nanocapsule 54 when the first or second nanocapsule layer is originally in the initial state. Although convexly protruding from the surface, the nanocapsules 54 protruding from the surface burst during coating of platinum (Pt) for SEM analysis, so that the liquid crystals inside the capsules leaked out.
  • Pt platinum
  • the reason why the holes (ie, the size (diameter)) of the nanocapsule 54 are not constant and variously appears is basically that in the first and second nanocapsule layers 50 and 60 of the present invention. This is because the size of the provided nanocapsules has some size particle size distribution.
  • the average particle size of the plurality of nanocapsules 54 and 64 dispersed in the first and second nanocapsule layers 50 and 60 is about 120. Nm, some small size nanocapsules have a particle size distribution of about 80nm, and some large size nanocapsules have a diameter of about 300nm.
  • the nanocapsules (54, 64) provided in the first and second nanocapsule layer (50, 60) is not attached to each other or dense, and most of the mutual It is characterized by consisting of a structure that is distributed at intervals.
  • the panel structure of the present invention is configured to form each nanocapsule (54,64) of the first and second nanocapsule layers (50,60) to an average diameter size of 200nm or less, and each nanocapsule is not attached to each other.
  • the average particle size of the nanocapsules (54,64) is configured to 200nm or less, the distance between the capsules, that is, the filling rate of the nanocapsules (54,64) to 80% or more like the conventional electrophoresis method or micro liquid crystal capsule method If the configuration is dense, the scattering degree is increased to indicate an opaque state of the initial state so that the present invention cannot function as a smart window or display device to be implemented.
  • the present inventors through a number of experiments, when the nanocapsules 54 and 64 are arranged to be dispersed within the polymer binding matrix with a filling rate in the range of 30 to 70%, the above-described optical characteristics, that is, a transparent initial state We can see that we can implement
  • the term 'fill rate to density' used in the present invention is a fraction of the space occupied by the nanocapsules 54 and 64 within each polymer matrix 55 and 65, and the first and second nanocapsule layers 50 60 may be expressed as a volume density (vol%) of each, that is, 30 to 70% by volume of the first nanocapsule layer or the second nanocapsule layer.
  • the maximum average particle size of the nanocapsules 54 and 64 is 200 nm is that when the average particle size of the nano capsules 54 and 64 increases to 200 nm or more, the nano capsules 54 and 64 have an average particle size of 200 nm or more. Irrespective of the filling rate change, the scattering degree of the first and second nanocapsule layers 50 and 60 was greatly increased, and thus the driving characteristics were significantly decreased.
  • 6 (a) and 6 (b) are plan views showing an electrode structure, a first electric field direction, and a second electric field direction of the first transverse electric field electrode layer and the second transverse electric field electrode layer according to the present invention, respectively.
  • the first transverse electric field electrode layer 30 is characterized in that it is composed of a first transverse electric field electrode layer in the first electric field direction.
  • the first electric field direction means a transverse electric field formed in one direction (first direction, X1) which is distinguished from the second electric field direction to be described later, and the first transverse electric field type electrode layer 30 in the first electric field direction is such a A layer in which a transverse electric field electrode is formed to form an electric field in the first direction X1.
  • the first transverse electric field type electrode layer 30 is configured to have an electrode structure in which the transverse electric field is applied to respond the nanocapsules 54 of the first nanocapsule layer 50.
  • the electrode structure of the first transverse electric field type electrode layer 30 is preferably the same substrate (ie, the first substrate 10) in order to form a transverse electric field as shown in FIG. 8. It can be configured by an in-plane switching (IPS) method formed in the same layer on the top.
  • IPS in-plane switching
  • the electrode structure of the first transverse electric field electrode layer 30 is formed on the same substrate (that is, the first substrate 10) to form a pixel electrode and a common electrode to form a transverse electric field.
  • the common electrode may be arranged in different layers, and may be configured by a FFS (Fringe-Field Switching) method in which an insulating film is interposed therebetween.
  • the first transverse electric field electrode layer 30 may be formed of a transparent material that may transmit light.
  • a transparent material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide, tin oxide, tin oxide (Fluorine-doped Zinc Oxide (FTO), Pidot (PEDOT) : PSS, graphene, silver nanowires (AgNW) and carbon nanotubes (CNT) may be formed of at least one selected from the group of transparent conductive materials.
  • the first nanocapsule layer 50 is formed by applying and curing the above-described coating solution on one surface of the first substrate 10 on which the first transverse electric field electrode layer 30 is formed.
  • the second transverse electric field electrode layer 40 of the present invention is characterized by being composed of a second transverse electric field electrode layer in the second electric field direction.
  • the second electric field direction means a transverse electric field formed in another direction (second direction, Y1) which is different from the first electric field direction X1 to be described above, and the second transverse electric field type electrode layer 40 in the second electric field direction ) Denotes a layer in which a transverse electric field electrode is formed to form an electric field in the second direction Y1.
  • the second nanocapsule layer 60 is formed by applying and curing the above-described coating solution on one surface of the second substrate 20 on which the second transverse electric field electrode layer 40 is formed.
  • the second transverse electric field type electrode layer 40 is configured to have an electrode structure in which the transverse electric field is applied to respond the nanocapsules 64 of the second nanocapsule layer 60.
  • the pixel electrode 41 and the common electrode 42 may be formed on the same substrate as the first transverse electric field electrode layer 30. May be configured by an IPS (In-Plane Switching) method, or may be configured by a FFS (Fringe-Field Switching) method, and the material forming the same may be configured in the same manner as the first transverse electric field electrode layer 30.
  • IPS In-Plane Switching
  • FFS Frringe-Field Switching
  • the second transverse electric field electrode layer 40 forms an electric field direction different from the electric field direction (that is, the first electric field direction X1) of the first transverse electric field electrode layer 30 (that is, the second electric field direction Y1). It is configured to.
  • the first transverse electric field electrode layer 30 and the second transverse electric field electrode layer 40, the first electric field direction (X1) and the second electric field direction as shown in Figs. (Y1) is characterized in that it is configured to be orthogonal to each other.
  • the first nanocapsule layer may be formed by the orientation characteristic of the first nanocapsule layer 50 implemented by the first electric field.
  • 50 may perform a polarizing plate function having a polarization axis of 0 ° (or 90 °)
  • the second nanocapsule layer 60 may be formed by the alignment characteristic of the second nanocapsule layer 60 implemented by the second electric field. This is because the polarization axis can perform a polarizing plate function of 90 ° (or 0 °).
  • the activation and deactivation of such a polarizing plate function can be controlled by applying or not applying a voltage.
  • the panel structure of the present invention is controlled to transmit light and to a white / black state. Expression becomes possible.
  • FIG. 7 is an operation state diagram illustrating an operation when voltage is not applied to a panel structure according to an exemplary embodiment of the present invention.
  • the first and second transverse electric field electrode layers 30 and 40 are configured in an in-plane switching (IPS) method. .
  • IPS in-plane switching
  • each nanocapsule 54 64, the liquid crystal and dichroic dyes present in the interior thereof are in a random direction.
  • first nanocapsule layer 50 and the second nanocapsule layer 60 may be characterized in terms of configuration of the nanocapsules 54 and 64 included therein (that is, the average particle size of the nanocapsules described and illustrated in FIG. 4 and The filling factor) allows the display of the transmission mode to the white state to be driven by passing most of the incident light as it is.
  • FIG. 8 is an operational state diagram illustrating an operation when voltage is applied to a panel structure according to an exemplary embodiment of the present invention.
  • the first and second transverse electric field electrode layers 30 and 40 are configured in an in-plane switching (IPS) method. .
  • IPS in-plane switching
  • the liquid crystals 51 and 61 and the dichroic dyes 53 and 63 existing in each of the nanocapsules 54 and 64 are oriented in a specific direction.
  • the first nanocapsule layer 50 when a transverse electric field in the first direction X1 is formed in the first transverse electric field electrode layer 30 by voltage application, the first nano capsule layer 50 reacts with the first nanocapsule layer 50.
  • the liquid crystals 51 present in the capsule layer 50 are arranged along the first direction X1 (hereinafter, referred to as a 'first alignment operation').
  • the dichroic dyes 53 present in the first nanocapsule layer 50 together with the liquid crystals 51 may also be disposed in the liquid crystals 51.
  • a state in which the alignment is performed in the first direction X1 is performed in conjunction with the first alignment operation of.
  • the dichroic dye 53 is arranged to have the lowest energy in the first direction X1.
  • an interaction occurs in the dichroic dye adjacent to the liquid crystal, and the dichroic dye is also aligned in the same direction (that is, in the first direction).
  • the dichroic dyes 63 present in the second nanocapsule layer 60 together with the liquid crystal 61 may also be linked to the second alignment operation of the liquid crystal in the second direction. It forms a state oriented in (Y1). The reason for this is the same as the principle of the alignment operation of the dichroic dye 53 of the first nanocapsule layer 50.
  • the dichroic dye 53 of the first nanocapsule layer 50 moves in the first electric field direction (for example, 0 ° direction). It is oriented and thereby acts to absorb the 0 degree polarized light of incident light.
  • the dichroic dye 53 oriented in the first direction serves to block 0 ° polarized light of incident light, such as a polarizing plate having a 90 ° polarization axis.
  • the dichroic dye 63 of the second nanocapsule layer 60 is oriented in the second electric field direction (eg, 90 ° direction). Therefore, the effect
  • the dichroic dye 63 oriented in the second direction serves to block the 90 ° polarized light of the incident light as if it were a polarizing plate having a 0 ° polarization axis.
  • the liquid crystals 51 and 61 of the first and second nanocapsule layers 50 and 60 may also be first. And form a state oriented in the second direction to induce birefringence.
  • the panel structure of the present invention is particularly applicable to display devices such as smart windows, transparent displays, and electronic blackboards due to driving characteristics when voltage is applied and non-applied.
  • the light transmittance of the windows is adjusted as necessary by functioning as a normal transmissive window through the transmission mode according to the non-voltage application, and a shielded window with a black film formed through the blocking mode according to the voltage application. It can be used as a smart window that can be actively adjusted.
  • the panel structure of the present invention is capable of expressing white and black states according to voltage application and non-application in a state in which all the components are formed of a transparent material. It becomes applicable to the copyboard.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)

Abstract

La présente invention concerne une structure de panneau, permettant l'expression d'un état blanc/noir et le réglage de transmittance de lumière même sans lame polarisante, et une fenêtre intelligente et un dispositif d'affichage utilisant celle-ci. Une structure de panneau, selon la présente invention, comprend : un premier panneau ayant un premier substrat, une première couche d'électrode de type à champ électrique transversal qui est formée sur le premier substrat et est dans une première direction de champ électrique, et une première couche de nanocapsules qui est formée sur le premier substrat ; et un deuxième panneau collé au premier panneau et ayant un deuxième substrat, une deuxième couche d'électrode de type à champ électrique transversal est formée sur le deuxième substrat et est dans une deuxième direction de champ électrique, et une deuxième couche de nanocapsules qui est formée sur le deuxième substrat. De plus, la première couche de nanocapsules et la deuxième couche de nanocapsules comprennent : une pluralité de nanocapsules formées d'un matériau de noyau, dans laquelle des cristaux liquides et un colorant dichroïque sont mélangés, et un matériau d'enveloppe qui forme la paroi externe du matériau central ; et une matrice de polymère dans laquelle la pluralité de nanocapsules sont disposées. Et la première couche d'électrode de type à champ électrique transversal et la deuxième couche d'électrode de type à champ électrique transversal sont formées de sorte que la direction du premier champ électrique et la direction du deuxième champ électrique diffèrent l'une de l'autre.
PCT/KR2016/002331 2015-03-16 2016-03-09 Structure de panneau ayant une fonction d'ajustement de transmittance de lumière, et fenêtre intelligente et dispositif d'affichage utilisant celle-ci Ceased WO2016148431A1 (fr)

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WO2017178419A1 (fr) * 2016-04-13 2017-10-19 Merck Patent Gmbh Composition pour nanoencapsulation et nanocapsules comprenant un milieu cristallin liquide
WO2018078078A1 (fr) * 2016-10-31 2018-05-03 Merck Patent Gmbh Nanocapsules comprenant un milieu à cristaux liquides
US10451918B2 (en) * 2017-10-11 2019-10-22 Samsung Display Co., Ltd. Display panel and display device including the same
WO2022103099A1 (fr) * 2020-11-16 2022-05-19 이미지랩(주) Panneau de réglage de transmission de lumière pour fenêtre intelligente, et fenêtre intelligente pour véhicule la comprenant
US12130521B1 (en) * 2021-12-16 2024-10-29 Apple Inc. Windows with liquid crystal layers

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WO2018078078A1 (fr) * 2016-10-31 2018-05-03 Merck Patent Gmbh Nanocapsules comprenant un milieu à cristaux liquides
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KR102430024B1 (ko) 2020-11-16 2022-08-08 이미지랩(주) 스마트 윈도우용 광투과 조절 패널 및 이를 구비하는 차량용 스마트 윈도우
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KR102472452B1 (ko) 2020-11-16 2022-11-30 이미지랩(주) 스마트 윈도우용 광투과 조절 패널 및 이를 구비하는 차량용 스마트 윈도우
US12130521B1 (en) * 2021-12-16 2024-10-29 Apple Inc. Windows with liquid crystal layers

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