CN110361806B - Iodine-based polarizing plate and display device - Google Patents

Iodine-based polarizing plate and display device Download PDF

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CN110361806B
CN110361806B CN201910674727.0A CN201910674727A CN110361806B CN 110361806 B CN110361806 B CN 110361806B CN 201910674727 A CN201910674727 A CN 201910674727A CN 110361806 B CN110361806 B CN 110361806B
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organic dye
display device
protection layer
derivative
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CN110361806A (en
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查宝
李吉
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TCL Huaxing Photoelectric Technology Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers

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  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
  • Optical Filters (AREA)

Abstract

The disclosure provides a polarizer and a display device, wherein the polarizer comprises a surface protection layer, a stripping protection layer and an organic dye layer, wherein the organic dye layer is provided with an organic dye for absorbing light with the wavelength of less than 430 nm; according to the embodiment of the disclosure, organic dyes such as benzophenone derivatives or methylene bis-benzotriazolyl tetramethyl butyl phenol derivatives are added in the organic dye layer of the polarizer and the first film layer of the display device, and the organic dyes are used for absorbing light with the wavelength lower than 430nm, and the wavelength of partial blue light is within the range, so that the problem that the dark-state color point is bluish due to excessive blue light leakage in the dark state of the existing liquid crystal display device is effectively solved, the color expression capability of the display device is improved, and the damage of deep blue light to human eyes can be reduced.

Description

Iodine-based polarizing plate and display device
Technical Field
The invention relates to the technical field of display, in particular to an iodine polarizer and a display device.
Background
At present, iodine-based polarizers are commonly used in liquid crystal display devices, and consist of polyvinyl Alcohol (PVA) and iodine molecules. Since the iodine-based polarizer is easy to obtain polarization characteristics of high polarization degree and high transmittance, the iodine-based polarizer is mainly used in the liquid crystal display at present.
The optical characteristics of the polarizer can be influenced by the components and the content of iodine molecules, wherein I5-in the iodine molecules has high absorption efficiency on red light, and I5-has large molecular weight, is easy to decompose or volatilize and can be decomposed into I3-. In order to prevent the polarizer from exhibiting the "red change" phenomenon, the I5-content needs to be increased in the polarizer, so that the current liquid crystal display is easily in a dark state, and the blue light leakage is too much, which results in a dark state color point being bluish.
In summary, in the conventional lcd device, when the liquid crystal display device is in a dark state, the problem that the color point in the dark state is blue due to excessive leakage of blue light occurs. Therefore, it is necessary to provide an iodine-based polarizer and a display device to improve this defect.
Disclosure of Invention
The embodiment of the disclosure provides an iodine polarizer and a display device, which are used for solving the problem that a dark-state color point is blue due to excessive blue light leakage under the dark-state condition of the existing liquid crystal display device.
The embodiment of the disclosure provides an iodine polarizer, which comprises a surface protection layer, a stripping protection layer and an organic dye layer, wherein the organic dye layer is provided with an organic dye for absorbing light with the wavelength of less than 430 nm;
wherein the structure of the organic dye is a benzophenone derivative of formula (1) or the structure of the organic dye is a methylene bis-benzotriazolyl tetramethyl butylphenol derivative of formula (2).
Figure 666394DEST_PATH_IMAGE001
（1）
Figure 234778DEST_PATH_IMAGE002
（2）
According to an embodiment of the present disclosure, the benzophenone derivative and the methylenebis-benzotriazolyl tetramethylbutylphenol derivative each include R1, and R1 includes at least one of an alkoxy group, an ester group, a linear alkane having a non-conjugated structure, an alkane having a branched chain, an F-substituted alkane derivative, and a conjugated structure in which the alkoxy group and the ester group are linked.
The embodiment of the present disclosure further provides a display device, including: the light-emitting diode comprises a first substrate, wherein a first film layer is arranged on the first substrate, and organic dye for absorbing light with the wavelength being lower than 430nm is configured in the first film layer;
wherein the structure of the organic dye is a benzophenone derivative of formula (1) or the structure of the organic dye is a methylene bis-benzotriazolyl tetramethyl butylphenol derivative of formula (2).
Figure 919838DEST_PATH_IMAGE001
（1）
Figure 599081DEST_PATH_IMAGE002
（2）
According to an embodiment of the present disclosure, R1 includes alkoxy, ester, linear alkane having a non-conjugated structure, alkane having a branched chain, F-substituted alkane derivative, conjugated structure connected by alkoxy and ester, or compound having a heterocyclic ring.
According to an embodiment of the disclosure, the first substrate is an iodine polarizer, the first film layer is an organic dye layer, the iodine polarizer further includes a surface protection layer and a stripping protection layer, and the organic dye layer is disposed between the surface protection layer and the stripping protection layer.
According to an embodiment of the present disclosure, the material of the organic dye layer is one of polystyrene, bisphenol a polycarbonate, polymethyl methacrylate, polyamide-6, polyurethane, and polyimide, or a block formed by polymerizing two or more of the above materials.
According to an embodiment of the present disclosure, the display device is a liquid crystal display device, the first substrate is a backlight substrate for providing a light source, and the first film layer is a diffusion sheet.
According to an embodiment of the present disclosure, the display device further includes a display panel, the backlight substrate further includes a diffusion plate and a light source, the diffusion plate is disposed on the diffusion plate on a side close to the display panel, and the light source is disposed on the diffusion plate on a side far from the diffusion plate.
According to an embodiment of the present disclosure, the display device is a liquid crystal display device, the first substrate is a color film substrate, and the first film layer is a color film filter layer.
According to an embodiment of the present disclosure, the color filter layer includes a blue color filter layer, a red color filter layer, and a green color filter layer, and the organic dye is disposed in the blue color filter layer.
The beneficial effects of the disclosed embodiment are as follows: according to the embodiment of the disclosure, organic dyes such as benzophenone derivatives or methylene bis-benzotriazole tetramethyl butyl phenol derivatives are added in the organic dye layer of the iodine polarizer and the first film layer of the display device, the organic dyes are used for absorbing light with a wavelength lower than 430nm, and the wavelength of partial blue light is within the range, so that the problem that the color point of a dark state is blue due to excessive blue light leakage under the condition that the existing liquid crystal display device is in the dark state is effectively solved, the color expression capability of display equipment is improved, and the damage of deep blue light to human eyes can be reduced.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some of the disclosed embodiments, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic cross-sectional view of an iodine-based polarizer according to an embodiment of the present disclosure;
fig. 2 is a schematic cross-sectional structure diagram of a display device according to a second embodiment of the disclosure;
fig. 3 is a schematic cross-sectional structure diagram of a display device according to a third embodiment of the disclosure;
fig. 4 is a schematic cross-sectional structure diagram of a display device according to a fourth embodiment of the disclosure.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the disclosure may be practiced. Directional phrases used in this disclosure, such as [ upper ], [ lower ], [ front ], [ back ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terms used are used for the purpose of illustration and understanding of the present disclosure, and are not used to limit the present disclosure. In the drawings, elements having similar structures are denoted by the same reference numerals.
The disclosure is further described with reference to the following drawings and specific embodiments:
the first embodiment is as follows:
the embodiment of the present disclosure provides an iodine polarizer, which is described in detail below with reference to fig. 1.
As shown in fig. 1, fig. 1 is a schematic cross-sectional structure view of an iodine polarizer 100 according to an embodiment of the disclosure, where the iodine polarizer 100 includes a surface protection layer 170, a stripping protection layer 110, and an organic dye layer 130.
Wherein, an organic dye for absorbing light with a wavelength less than 430nm is disposed in the organic dye layer 130.
In this embodiment, the structure of the organic dye in the organic dye layer 130 is a benzophenone derivative of formula (1).
Figure 515346DEST_PATH_IMAGE001
（1）
In some embodiments, the organic dye in the organic dye layer 130 may also be a methylenebis-benzotriazolyl tetramethylbutylphenol derivative of formula (2).
Figure 51370DEST_PATH_IMAGE002
（2）
Specifically, the benzophenone derivative and the methylene bis-benzotriazolyl tetramethyl butylphenol derivative both contain R1, the R1 comprises an alkoxy group or an ester group, and the length of a carbon chain in the alkoxy group and the length of a carbon chain in the ester group are both 1-25.
In some embodiments, the R1 can be a linear or branched alkane that is not a conjugated structure, an alkoxy group, a conjugated structure linked by an alkoxy group and an ester group.
In some embodiments, R1 can also be a F-substituted alkane derivative, wherein the length of the carbon chain of the F-substituted alkane derivative is in the range of 1-25.
In some embodiments, the R1 can also be a heterocyclic containing compound or other group with the same chemical nature and function.
Specifically, the heterocycle-containing compound is a five-membered heterocyclic compound, a six-membered heterocyclic compound, a benzo-heterocyclic compound and a condensed ring heterocyclic compound. The five-membered heterocyclic compound comprises furan, thiophene, pyrrole, thiazole and imidazole; the six-membered heterocyclic compound comprises pyridine, pyrazine, pyrimidine and pyridazine; the fused ring heterocyclic compound comprises indole, quinoline, pteridine and acridine.
In this embodiment, the material of the organic dye layer 130 mainly includes one of polystyrene, bisphenol a polycarbonate, polymethyl methacrylate, polyamide-6, polyurethane and polyimide, or a block formed by polymerizing two or more of the above materials.
Specifically, the molecular weight of the block is in the range of 1000 to 20000.
Specifically, the thickness of the organic dye layer 130 containing the organic dye is 100nm to 3000 nm.
In this embodiment, the iodine-based polarizer further includes a first protective layer 160, a polarizing sublayer 150, a second protective layer 140, and an adhesive layer 120. The first protection layer 160 is disposed on a side of the surface protection layer 170 close to the peeling protection layer 110, the second protection layer 140 is disposed on a side of the first protection layer 160 away from the surface protection layer 170, the polarizing sublayer 150 is disposed between the first protection layer 160 and the second protection layer 140, and the adhesion layer 120 is disposed between the organic dye layer 130 and the peeling protection layer 110.
In the embodiment of the present disclosure, organic dyes such as benzophenone derivatives or methylene bis-benzotriazolyl tetramethylbutylphenol derivatives are added in the organic dye layer 130 of the iodine polarizer 100, and the organic dyes are used for absorbing light with a wavelength less than 430nm, and a part of blue light has a wavelength within this range, so that the organic dyes can also effectively absorb blue light in light emitted by a light source while playing a role of a polarizer.
Example two:
the embodiment of the present disclosure further provides a display device, which is described in detail below with reference to fig. 2.
As shown in fig. 2, fig. 2 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the disclosure. The display device 200 includes: the first substrate 210 is provided with a first film layer 213, and an organic dye for absorbing light with a wavelength less than 430nm is disposed in the first film layer 213.
In this embodiment, the display device 200 is a liquid crystal display device, the first substrate 210 is an iodine polarizer, the first film layer 213 is an organic dye layer, the iodine polarizer 210 further includes a surface protection layer 217 and a stripping protection layer 211, and the organic dye layer 213 is disposed between the surface protection layer 217 and the stripping protection layer 211.
In this embodiment, the organic dye in the organic dye layer 130 is a benzophenone derivative having a structure shown in formula (1).
Figure 223725DEST_PATH_IMAGE001
（1）
In some embodiments, the organic dye in the organic dye layer 213 may also be a methylenebis-benzotriazolyl tetramethylbutylphenol derivative having a structure shown in formula (2).
Figure 441080DEST_PATH_IMAGE002
（2）
Specifically, the benzophenone derivative and the methylene bis-benzotriazolyl tetramethyl butylphenol derivative both contain R1, the R1 comprises an alkoxy group or an ester group, and the length of a carbon chain in the alkoxy group and the length of a carbon chain in the ester group are both 1-25.
In some embodiments, the R1 can be a linear or branched alkane that is not a conjugated structure, an alkoxy group, a conjugated structure linked by an alkoxy group and an ester group.
In some embodiments, R1 can also be a F-substituted alkane derivative, wherein the length of the carbon chain of the F-substituted alkane derivative is in the range of 1-25.
In some embodiments, the R1 can also be a heterocyclic containing compound or other group with the same chemical nature and function.
Specifically, the heterocycle-containing compound is a five-membered heterocyclic compound, a six-membered heterocyclic compound, a benzo-heterocyclic compound and a condensed ring heterocyclic compound. The five-membered heterocyclic compound comprises furan, thiophene, pyrrole, thiazole and imidazole; the six-membered heterocyclic compound comprises pyridine, pyrazine, pyrimidine and pyridazine; the fused ring heterocyclic compound comprises indole, quinoline, pteridine and acridine.
In the present embodiment, the iodine-based polarizer 210 further includes a first protective layer 216, a polarizing sublayer 215, a second protective layer 214, and an adhesive layer 212. The first protective layer 216 is disposed on a side of the surface protective layer 217 close to the peeling protective layer 211, the second protective layer 214 is disposed on a side of the first protective layer 216 away from the surface protective layer 217, the polarizing sublayer 215 is disposed between the first protective layer 216 and the second protective layer 214, and the adhesive layer 212 is disposed between the organic dye layer 213 and the peeling protective layer 211.
In this embodiment, the material of the organic dye layer 213 mainly includes one of polystyrene, bisphenol a polycarbonate, polymethyl methacrylate, polyamide-6, polyurethane and polyimide, or a block formed by polymerizing two or more of the above materials.
Specifically, the molecular weight of the block is in the range of 1000 to 20000.
Specifically, the thickness of the organic dye layer 130 containing the organic dye is 100nm to 3000 nm.
Preferably, the display device 200 further includes a color filter substrate, an array substrate and a backlight module (not shown in the figure) which are oppositely disposed, and the iodine-based polarizer 210 containing an organic dye is disposed on one side of the color filter substrate, which is far away from the array substrate. In some embodiments, the iodine-based polarizer 210 containing an organic dye may also be disposed between the array substrate and the backlight module.
According to the embodiment of the disclosure, organic dyes such as benzophenone derivatives or methylene bis-benzotriazole tetramethyl butyl phenol derivatives are added in the organic dye layer 213 of the iodine polarizer 210, the organic dyes are used for absorbing light with a wavelength lower than 430nm, and the wavelength of part of blue light is within the range, so that the problem that the dark-state color point is bluish due to excessive blue light leakage in the dark state of the existing liquid crystal display device is effectively solved, the color expression capability of the display device is increased, and the damage of deep blue light to human eyes can be reduced.
Example three:
the embodiment of the present disclosure provides a display device, which is described in detail below with reference to fig. 3.
As shown in fig. 3, fig. 3 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the disclosure. The display device 300 includes: the first substrate 310 is provided with a first film layer 315, and an organic dye for absorbing light with a wavelength lower than 430nm is disposed in the first film layer 315.
In this embodiment, the display device 300 is a liquid crystal display device, the first substrate 310 is a backlight substrate for providing a light source, and the first film layer 213 is a diffusion sheet.
Specifically, the display device 300 further includes a display panel 320, the backlight substrate 310 further includes a light source 311, a reflection plate 312, an outer frame 313, a diffusion plate 314, and an incremental film 316, the diffusion sheet 315 is disposed on the diffusion plate 314 at a side close to the display panel 320, and the light source 311 is disposed on the diffusion plate 314 at a side far from the diffusion sheet 314.
In this embodiment, the organic dye in the diffusion sheet 213 is a benzophenone derivative having a structure shown in formula (1).
Figure 772704DEST_PATH_IMAGE001
（1）
In some embodiments, the organic dye in the diffusion sheet 213 may also be a methylenebis-benzotriazolyl tetramethylbutylphenol derivative having a structure shown in formula (2).
Figure 184356DEST_PATH_IMAGE002
（2）
Specifically, the benzophenone derivative and the methylene bis-benzotriazolyl tetramethyl butylphenol derivative both contain R1, the R1 comprises an alkoxy group or an ester group, and the length of a carbon chain in the alkoxy group and the length of a carbon chain in the ester group are both 1-25.
In some embodiments, the R1 can be a linear or branched alkane that is not a conjugated structure, an alkoxy group, a conjugated structure linked by an alkoxy group and an ester group.
In some embodiments, R1 can also be a F-substituted alkane derivative, wherein the length of the carbon chain of the F-substituted alkane derivative is in the range of 1-25.
In some embodiments, the R1 can also be a heterocyclic containing compound or other group with the same chemical nature and function.
Specifically, the heterocycle-containing compound is a five-membered heterocyclic compound, a six-membered heterocyclic compound, a benzo-heterocyclic compound and a condensed ring heterocyclic compound. The five-membered heterocyclic compound comprises furan, thiophene, pyrrole, thiazole and imidazole; the six-membered heterocyclic compound comprises pyridine, pyrazine, pyrimidine and pyridazine; the fused ring heterocyclic compound comprises indole, quinoline, pteridine and acridine.
In this embodiment, the diffusion plate 314 is used to support other optical films in the backlight substrate 310, and the optical films are placed to sag to affect the optical effect. The incremental film 316 is recycled by reflection of light to improve the brightness of the light source as a whole, and the diffusion sheet 315 is a film in which light is diffused by the diffusion coating to be uniformly distributed. Organic dyes such as benzophenone derivatives or methylene bis-benzotriazole tetramethyl butyl phenol derivatives and the like are added in the diffusion sheet, the organic dyes are used for absorbing light with the wavelength lower than 430nm, and the wavelength of partial blue light is within the range, so that the problem that dark-state color points are blue due to excessive blue light leakage under the dark-state condition of the existing liquid crystal display device is effectively solved, the color expression capability of display equipment is improved, and the damage of deep blue light to human eyes can be reduced.
Example four:
the embodiment of the present disclosure further provides a display device, which is described in detail below with reference to fig. 4.
As shown in fig. 4, fig. 4 is a schematic cross-sectional structure diagram of a display device 400 according to an embodiment of the disclosure. The display device 400 includes: the light-emitting diode display panel comprises a first substrate 410, wherein a first film layer 412 is arranged on the first substrate 410, and an organic dye for absorbing light with a wavelength lower than 430nm is arranged in the first film layer 412.
In this embodiment, the display device 400 is a liquid crystal display device, the first substrate 410 is a color filter substrate, and the first film 412 is a color filter layer.
Specifically, the color filter layer 412 includes a red color filter layer 413, a blue color filter layer 414, and a green color filter layer 415, and the organic dye is disposed in the blue color filter layer 414.
Specifically, the organic dye in the blue color filter layer 414 is a benzophenone derivative having a structure shown in formula (1).
Figure 844008DEST_PATH_IMAGE001
（1）
In some embodiments, the organic dye in the blue color filter layer 414 may also be a methylenebis-benzotriazolyl tetramethylbutylphenol derivative having a structure shown in formula (2).
Figure 865053DEST_PATH_IMAGE002
（2）
Specifically, the benzophenone derivative and the methylene bis-benzotriazolyl tetramethyl butylphenol derivative both contain R1, the R1 comprises an alkoxy group or an ester group, and the length of a carbon chain in the alkoxy group and the length of a carbon chain in the ester group are both 1-25.
In some embodiments, the R1 can be a linear or branched alkane that is not a conjugated structure, an alkoxy group, a conjugated structure linked by an alkoxy group and an ester group.
In some embodiments, R1 can also be a F-substituted alkane derivative, wherein the length of the carbon chain of the F-substituted alkane derivative is in the range of 1-25.
In some embodiments, the R1 can also be a heterocyclic containing compound or other group with the same chemical nature and function.
Specifically, the heterocycle-containing compound is a five-membered heterocyclic compound, a six-membered heterocyclic compound, a benzo-heterocyclic compound and a condensed ring heterocyclic compound. The five-membered heterocyclic compound comprises furan, thiophene, pyrrole, thiazole and imidazole; the six-membered heterocyclic compound comprises pyridine, pyrazine, pyrimidine and pyridazine; the fused ring heterocyclic compound comprises indole, quinoline, pteridine and acridine.
Specifically, when the blue color filter layer is manufactured, an organic dye solvent is required to be dissolved in Propylene Glycol Methyl Ether Acetate (PGMEA), and uniformly dispersed in a blue color filter photoresist, and the blue color filter layer with the absorption wavelength of less than 430nm can be obtained through processes of coating, pre-baking, exposure, development, baking and the like.
According to the embodiment of the disclosure, by adding organic dyes such as benzophenone derivatives or methylene bis-benzotriazole tetramethyl butyl phenol derivatives in the blue color film filter layer 414 of the liquid crystal display device 400, when light emitted by a light source passes through the blue color film filter layer 414, the light with the wavelength of less than 430nm can be absorbed by the organic dyes, so that the problem that a dark color point is bluish due to excessive blue light leakage in a dark state of the existing liquid crystal display device is effectively solved, the color expression capability of the display device is increased, and the damage of deep blue light to human eyes can be reduced.
In summary, although the present disclosure has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present disclosure, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, so that the scope of the present disclosure is defined by the appended claims.

Claims (5)

1. An iodine polarizer is characterized by comprising a surface protection layer, a first protection layer, a polarizing sublayer, a second protection layer, an adhesion layer, a stripping protection layer and an organic dye layer arranged between the second protection layer and the adhesion layer, wherein the surface protection layer, the first protection layer, the polarizing sublayer, the second protection layer, the adhesion layer, the stripping protection layer and the organic dye layer are sequentially stacked from top to bottom;
the structure of the organic dye is a benzophenone derivative of a formula (1) or a methylene bis-benzotriazolyl tetramethylbutylphenol derivative of a formula (2), the benzophenone derivative and the methylene bis-benzotriazolyl tetramethylbutylphenol derivative both comprise R1, and R1 comprises at least one of alkoxy, ester group, F-substituted alkane derivative and a conjugated structure formed by connecting the alkoxy and the ester group;
Figure 436311DEST_PATH_IMAGE001
（1）；
Figure 725472DEST_PATH_IMAGE002
（2）。
2. a display device, comprising: the iodine polarizer comprises a surface protection layer, a first protection layer, a polarizing sublayer, a second protection layer, an adhesion layer and a stripping protection layer which are sequentially stacked from top to bottom, wherein the organic dye layer is arranged between the second protection layer and the adhesion layer, and organic dye for absorbing light with the wavelength lower than 430nm is arranged in the organic dye layer;
the structure of the organic dye is a benzophenone derivative of a formula (1) or a methylene bis-benzotriazolyl tetramethylbutylphenol derivative of a formula (2), the benzophenone derivative and the methylene bis-benzotriazolyl tetramethylbutylphenol derivative both comprise R1, and R1 comprises at least one of alkoxy, ester group, F-substituted alkane derivative and a conjugated structure formed by connecting the alkoxy and the ester group;
Figure 516711DEST_PATH_IMAGE001
（1）；
Figure 64367DEST_PATH_IMAGE002
（2）。
3. the display device according to claim 2, wherein the organic dye layer is made of one of polystyrene, bisphenol a polycarbonate, polymethyl methacrylate, polyamide-6, polyurethane, and polyimide, or a block polymer of two or more of the above materials.
4. The display device according to claim 2, wherein the display device is a liquid crystal display device comprising a display panel and a backlight substrate for providing a light source, the backlight substrate comprises a diffusion plate, a light source, and a diffusion sheet, the diffusion sheet is disposed on a side of the diffusion plate close to the display panel, the light source is disposed on a side of the diffusion plate far from the diffusion sheet, and the organic dye is added in the diffusion sheet.
5. The display device according to claim 4, wherein the display panel comprises a color film substrate and an array substrate, the color film substrate comprises a color film filter layer, the color film filter layer comprises a blue color film filter layer, a red color film filter layer and a green color film filter layer, and the organic dye is added in the blue color film filter layer.
CN201910674727.0A 2019-07-25 2019-07-25 Iodine-based polarizing plate and display device Active CN110361806B (en)

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