WO2016179914A1 - 偏光板及液晶显示面板 - Google Patents

偏光板及液晶显示面板 Download PDF

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Publication number
WO2016179914A1
WO2016179914A1 PCT/CN2015/086458 CN2015086458W WO2016179914A1 WO 2016179914 A1 WO2016179914 A1 WO 2016179914A1 CN 2015086458 W CN2015086458 W CN 2015086458W WO 2016179914 A1 WO2016179914 A1 WO 2016179914A1
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WO
WIPO (PCT)
Prior art keywords
layer
polarizing
polarizing plate
protective layer
conductive filler
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Application number
PCT/CN2015/086458
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English (en)
French (fr)
Inventor
李吉
陈孝贤
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/779,014 priority Critical patent/US20160334669A1/en
Publication of WO2016179914A1 publication Critical patent/WO2016179914A1/zh

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033Polarisers, 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
    • G02B5/3041Polarisers, 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
    • G02B5/305Polarisers, 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
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J9/00Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
    • C09J9/02Electrically-conducting adhesives
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14Protective coatings, e.g. hard coatings
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/16Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528Polarisers

Definitions

  • the present invention relates to the field of polarizing plate fabrication, and in particular to a polarizing plate and a liquid crystal display panel.
  • the polarizing plate used in the liquid crystal display panel generally has a multilayer film structure.
  • FIG. 1 is a schematic structural view of a conventional polarizing plate.
  • the polarizing plate 10 includes a polarizing layer 11 that functions as a polarizing, such as a polyvinyl alcohol layer (Polyvinyl) Alcohol, PVA), etc.; a support layer 12 attached to the upper and lower surfaces of the polarizing layer 11, such as Tri Acetic acid Celluose, TAC), etc.; a protective layer 13 for protecting the polarizing plate 11, such as polyethylene terephthalate (Polyethylene) Terephthalate, PET, etc., and a pressure-sensitive adhesive layer 14, such as polyisobutylene, etc., for connecting the polarizing plate 11 and the liquid crystal display panel.
  • a polarizing layer 11 that functions as a polarizing, such as a polyvinyl alcohol layer (Polyvinyl) Alcohol, PVA), etc.
  • a support layer 12 attached to the upper
  • the protective layer 13 may be peeled off, and the polarizing plate 10 may be disposed on the surface of the array substrate or the color filter substrate through the pressure-sensitive adhesive layer 14.
  • an antistatic layer may be added between the pressure-sensitive adhesive layer and the support layer, and the antistatic layer is composed of a conductive polymer, a curable resin, a hydroxypropionate compound, and the like.
  • the antistatic layer merely avoids the influence of static electricity on the polarizing layer, and static electricity still accumulates on the pressure-sensitive adhesive layer, which may affect other components of the liquid crystal display panel.
  • the arrangement of the antistatic layer increases the manufacturing cost of the polarizing plate.
  • An object of the present invention is to provide a polarizing plate and a liquid crystal display panel which can effectively eliminate static electricity and have low manufacturing cost, and solve the technical problem that the conventional polarizing plate and the liquid crystal display panel cannot effectively eliminate static electricity and have high manufacturing cost.
  • the embodiment of the invention provides a polarizing plate, which comprises:
  • a polarizing layer for emitting light after the incident light is emitted
  • a support layer disposed on an upper side and a lower side of the polarizing layer for protecting the polarizing layer
  • a surface protective layer for isolating an upper surface of the polarizing layer from an external environment, the surface protective layer being connected to the supporting layer on an upper side of the polarizing layer;
  • a peeling protective layer for isolating a lower surface of the polarizing layer from an external environment, wherein the peeling protective layer is connected to the supporting layer on a lower side of the polarizing layer through an adhesive layer;
  • the adhesive layer is used to connect the polarizing plate to an array substrate or a color film substrate;
  • the bonding layer is a conductive bonding layer having a conductive substance
  • the material of the conductive bonding layer comprises a resin matrix, a conductive filler, a curing agent and an additive;
  • the resin matrix comprises at least one of an epoxy resin, an epoxy-phenolic resin, a silicone resin, a polyurethane, a polyacrylic resin, an acrylate copolymer, and a polystyrene sulfonate-doped polyethylene dioxythiophene;
  • the conductive filler is graphene, carbon nanotube or nano silver wire.
  • the embodiment of the invention further provides a polarizing plate, comprising:
  • a polarizing layer for emitting light after the incident light is emitted
  • a support layer disposed on an upper side and a lower side of the polarizing layer for protecting the polarizing layer
  • a surface protective layer for isolating an upper surface of the polarizing layer from an external environment, the surface protective layer being connected to the supporting layer on an upper side of the polarizing layer;
  • a peeling protective layer for isolating a lower surface of the polarizing layer from an external environment, wherein the peeling protective layer is connected to the supporting layer on a lower side of the polarizing layer through an adhesive layer;
  • the adhesive layer is used to connect the polarizing plate to an array substrate or a color film substrate;
  • the bonding layer is a conductive bonding layer having a conductive substance.
  • the material of the conductive bonding layer includes a resin matrix, a conductive filler, a curing agent, and an additive.
  • the resin matrix comprises an epoxy resin, an epoxy-phenolic resin, a silicone resin, a polyurethane, a polyacrylic resin, an acrylate copolymer, and a polyethylene doped with polystyrene sulfonate. At least one of dioxythiophenes.
  • the ratio of the resin matrix in the conductive bonding layer is 50% to 80%.
  • the conductive filler is graphene, carbon nanotube or nano silver wire.
  • the proportion of the conductive filler in the conductive bonding layer is 5% to 30%.
  • the curing agent is triethylamine, ethylenediamine, N,N-dimethyl-p-phenylamine or an isocyanate-based compound;
  • the additive is a silane coupling agent, a leveling agent, Suds suppressor or thinner.
  • the bonding layer is produced by the following steps:
  • the peeling protective layer after the drying treatment is adhered and cured to obtain the polarizing plate.
  • the predetermined viscosity is from 700 mPa ⁇ s to 900 mPa ⁇ s.
  • the embodiment of the invention further provides a liquid crystal display panel, which comprises an array substrate, a color film substrate, a liquid crystal layer, and a polarizing plate disposed on the array substrate and the color filter substrate:
  • the polarizing plate comprises:
  • a polarizing layer for emitting light after the incident light is emitted
  • a support layer disposed on an upper side and a lower side of the polarizing layer for protecting the polarizing layer
  • a surface protective layer for isolating an upper surface of the polarizing layer from an external environment, the surface protective layer being connected to the supporting layer on an upper side of the polarizing layer;
  • a peeling protective layer for isolating a lower surface of the polarizing layer from an external environment, wherein the peeling protective layer is connected to the supporting layer on a lower side of the polarizing layer through an adhesive layer;
  • the adhesive layer is used to connect the polarizing plate to an array substrate or a color film substrate;
  • the bonding layer is a conductive bonding layer having a conductive substance.
  • the material of the conductive bonding layer includes a resin matrix, a conductive filler, a curing agent, and an additive.
  • the resin matrix comprises an epoxy resin, an epoxy-phenolic resin, a silicone resin, a polyurethane, a polyacrylic resin, an acrylate copolymer, and a polystyrene sulfonate-doped polymer. At least one of ethylene dioxythiophenes.
  • the ratio of the resin matrix in the conductive bonding layer is 50% to 80%.
  • the conductive filler is graphene, carbon nanotubes or nano silver wires.
  • the proportion of the conductive filler in the conductive bonding layer is 5% to 30%.
  • the curing agent is triethylamine, ethylenediamine, N,N-dimethyl-p-phenylamine or an isocyanate-based compound;
  • the additive is a silane coupling agent, a leveling agent , suds suppressor or thinner.
  • the adhesive layer is produced by the following steps:
  • the peeling protective layer after the drying treatment is adhered and cured to obtain the polarizing plate.
  • the predetermined viscosity is from 700 mPa ⁇ s to 900 mPa ⁇ s.
  • the polarizing plate and the liquid crystal display panel of the present invention can better eliminate static electricity and have low manufacturing cost through the arrangement of the conductive bonding layer; and solve the existing polarizing plate and liquid crystal.
  • the display panel cannot effectively eliminate static electricity and has high technical problems.
  • FIG. 1 is a schematic structural view of a conventional polarizing plate
  • FIG. 2 is a schematic structural view of a preferred embodiment of a polarizing plate of the present invention.
  • Fig. 3 is a flow chart showing the fabrication of a preferred embodiment of the polarizing plate of the present invention.
  • FIG. 2 is a schematic structural view of a preferred embodiment of a polarizing plate of the present invention.
  • the polarizing plate 20 of the preferred embodiment includes a polarizing layer 21, a supporting layer 22, a surface protective layer 23, a peeling protective layer 24, and an adhesive layer 25.
  • the polarizing layer 21 is used for polarizing the incident light and then emitted; the supporting layer 22 is disposed on the upper side and the lower side of the polarizing layer 21 for protecting the polarizing layer 21; and the surface protective layer 23 is used for the upper surface of the polarizing layer 21
  • the external environment is isolated, and the surface protective layer 23 is connected to the support layer 22 located on the upper side of the polarizing layer 21; the peeling protective layer 24 is used to isolate the lower surface of the polarizing layer 21 from the external environment, and the peeling protective layer 24 passes through the adhesive layer.
  • 25 is connected to the support layer 22 on the lower side of the polarizing layer; the bonding layer 25 is used to connect the polarizing plate 20 to the array substrate or the color filter substrate.
  • the bonding layer 25 of the polarizing plate 20 is a conductive bonding layer having a conductive substance.
  • the material of the conductive bonding layer includes a resin matrix, a conductive filler, a curing agent, and an additive.
  • the resin matrix includes at least one of an epoxy resin, an epoxy-phenolic resin, a silicone resin, a polyurethane, a polyacrylic resin, an acrylate copolymer, and a polyethylene dioxythiophene doped with a polystyrene sulfonate.
  • the conductive filler is graphene, carbon nanotubes or nano silver wires.
  • the curing agent is triethylamine, ethylenediamine, N,N-dimethyl-p-phenylamine or an isocyanate-based compound.
  • the additive is a silane coupling agent, a leveling agent, a suds suppressor or a diluent.
  • the proportion of the resin matrix in the entire conductive bonding layer is 50% to 80%
  • the proportion of the conductive filler in the entire conductive bonding layer is 5% to 30%
  • the ratio of the curing agent in the entire conductive bonding layer is 1 From % to 5%
  • the proportion of the additive in the entire conductive bonding layer is from 1% to 10%. Since the conductive bonding layer is added with a nano-scale conductive filler, the conductive bonding layer maintains a high transmittance while maintaining electrical conductivity.
  • FIG. 3 is a flow chart showing the fabrication of a preferred embodiment of the polarizing plate of the present invention.
  • the production process includes:
  • Step S301 mixing the resin matrix and the conductive filler dispersion at a set ratio
  • Step S302 adding a curing agent to the mixed conductive filler dispersion
  • Step S303 adding an additive to the conductive filler dispersion after adding the curing agent to obtain a rubberized sample reaching a preset viscosity
  • Step S304 coating the glued sample on the peeling protective layer
  • Step S305 drying the peeling protective layer coated with the glued sample
  • step S306 the peeling protective layer and the support layer after the drying treatment are pasted and cured to obtain a polarizing plate.
  • step S301 a conductive filler dispersion such as a dispersion of graphene is prepared by a redox method. Then, the resin matrix and the conductive filler dispersion are mixed at a set ratio such as a resin matrix and a conductive filler in a mass ratio of 100:20. Then it proceeds to step S302.
  • step S302 after the resin matrix is sufficiently dissolved and mixed in the conductive filler dispersion, a curing agent such as an aromatic polyisocyanate having a mass fraction of 0.5% is added to the mixed conductive filler dispersion; then, the process proceeds to step S303. .
  • a curing agent such as an aromatic polyisocyanate having a mass fraction of 0.5%
  • step S303 ethyl acetate is added as a diluent solvent to the conductive filler dispersion after the addition of the curing agent to obtain a viscosity of 700.
  • step S304 the glued sample obtained in step S303 is coated on the peel-off protective layer to a thickness of about 25 ⁇ m using a coater; then, the process proceeds to step S305.
  • step S305 the peeling protective layer coated with the glued sample is subjected to a drying treatment in an oven of about 100 degrees Celsius; then, the process proceeds to step S306.
  • step S306 after the solvent in the sample to be glued is completely volatilized, the peeling protective layer after the drying process is attached to the support layer, and then the laminated polarizing plate is placed in a preset humidity environment. The curing is carried out for a time to obtain a polarizing plate having a conductive function.
  • the polarizing plate of the preferred embodiment can be directly attached to the array substrate or the color film substrate after removing the peeling protective layer, so as to effectively discharge the static electricity on the polarizing plate, the array substrate and the color filter substrate, without adding a polarizing plate. Production costs.
  • the present invention also provides a liquid crystal display panel comprising an array substrate, a color filter substrate, a liquid crystal layer disposed between the array substrate and the color filter substrate, and a polarizing plate disposed outside the array substrate and the color filter substrate.
  • the polarizing plate includes a polarizing layer, a supporting layer, a surface protective layer, a peeling protective layer, and a bonding layer.
  • the polarizing layer is used for polarizing the incident light and then emitted;
  • the supporting layer is disposed on the upper side and the lower side of the polarizing layer for protecting the polarizing layer;
  • the surface protective layer is used for isolating the upper surface of the polarizing layer from the external environment, the surface
  • the protective layer is connected to the support layer on the upper side of the polarizing layer;
  • the peeling protective layer is used to isolate the lower surface of the polarizing layer from the external environment, and the peeling protective layer is connected to the supporting layer on the lower side of the polarizing layer through the adhesive layer;
  • the bonding layer is used to connect the polarizing plate to the array substrate or the color filter substrate.
  • the bonding layer of the polarizing plate is a conductive bonding layer having a conductive substance.
  • the material of the conductive bonding layer comprises a resin matrix, a conductive filler, a curing agent, and an additive.
  • the resin matrix comprises at least one of an epoxy resin, an epoxy-phenolic resin, a silicone resin, a polyurethane, a polyacrylic resin, an acrylate copolymer, and a polyethylene dioxythiophene doped with polystyrene sulfonate.
  • an epoxy resin an epoxy-phenolic resin, a silicone resin, a polyurethane, a polyacrylic resin, an acrylate copolymer, and a polyethylene dioxythiophene doped with polystyrene sulfonate.
  • the proportion of the resin matrix in the conductive bonding layer is 50% to 80%.
  • the conductive filler is graphene, carbon nanotube or nano silver wire.
  • the proportion of the conductive filler in the conductive bonding layer is 5% to 30%.
  • the curing agent is triethylamine, ethylenediamine, N,N-dimethyl-p-phenylamine or an isocyanate-based compound;
  • the additive is a silane coupling agent, a leveling agent, a suds suppressor or a diluent.
  • the bonding layer is made by the following steps:
  • the peeling protective layer after the drying treatment is adhered and cured to obtain the polarizing plate.
  • the predetermined viscosity is from 700 mPa ⁇ s to 900 mPa ⁇ s.
  • the polarizing plate and the liquid crystal display panel of the invention can eliminate static electricity and have low manufacturing cost through the arrangement of the conductive adhesive layer; and the existing polarizing plate and the liquid crystal display panel can not effectively eliminate static electricity and have high production cost. technical problem.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Polarising Elements (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Liquid Crystal (AREA)

Abstract

一种偏光板(20),该偏光板(20)包括偏光层(21)、支撑层(22)、表面保护层(23)、剥离保护层(24)以及粘结层(25);偏光层(21)用于对入射光进行偏光处理后出射;支撑层(22)用于保护偏光层(21);表面保护层(23)用于将偏光层(21)的上表面与外界环境进行隔离;剥离保护层(24)用于将偏光层(21)的下表面与外界环境进行隔离;粘结层(25)用于将偏光板(20)连接至阵列基板或彩膜基板。

Description

偏光板及液晶显示面板 技术领域
本发明涉及偏光板制作领域,特别是涉及一种偏光板及液晶显示面板。
背景技术
液晶显示面板中使用的偏光板一般具有多层膜结构,请参照图1,图1为现有的偏光板的结构示意图。该偏光板10包括发挥偏光作用的偏光层11,如聚乙烯醇层(Polyvinyl Alcohol,PVA)等;贴附在偏光层11上下表面的支撑层12,如三醋酸纤维素(Tri Acetic acid Celluose,TAC)等;用于保护偏光板11的保护层13,如聚对苯二甲酸乙二醇(Polyethylene Terephthalate,PET)等以及用于连接偏光板11以及液晶显示面板的压敏粘结层14,如聚异丁烯等。当要将偏光板10贴附到阵列基板或彩膜基板的表面时,可将保护层13剥离,通过压敏粘结层14将偏光板10设置到阵列基板或彩膜基板的表面。
但是当将保护层13从偏光板10上除去时,可能会在偏光板10的偏光层11上产生静电,对液晶显示面板的显示效果产生不利的影响。
为了解决上述的静电问题,可在压敏粘结层和支撑层之间加入一抗静电层,该抗静电层由导电聚合物、可固化树脂以及羟基丙酸酯化合物等组成。但是抗静电层仅仅是避免了静电对偏光层的影响,静电依然会在压敏粘结层上进行积累,该静电可能会对液晶显示面板的其他部件产生影响。同时抗静电层的设置增加了偏光板的制作成本。
故,有必要提供一种偏光板及液晶显示面板,以解决现有技术所存在的问题。
技术问题
本发明的目的在于提供一种可有效地消除静电且制作成本低的偏光板及液晶显示面板;以解决现有的偏光板及液晶显示面板不能有效的消除静电以及制作成本较高的技术问题。
技术解决方案
本发明实施例提供一种偏光板,其包括:
偏光层,用于对入射光进行偏光处理后出射;
支撑层,设置在所述偏光层的上侧以及下侧,用于保护所述偏光层;
表面保护层,用于将所述偏光层的上表面与外界环境进行隔离,所述表面保护层与位于所述偏光层的上侧的所述支撑层连接;
剥离保护层,用于将所述偏光层的下表面与外界环境进行隔离,所述剥离保护层通过粘结层与位于所述偏光层的下侧的所述支撑层连接;以及
所述粘结层,用于将所述偏光板连接至阵列基板或彩膜基板上;
其中所述粘结层为具有导电物质的导电粘结层;
其中所述导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂;
所述树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种;
所述导电填料为石墨烯、碳纳米管或纳米银线。
本发明实施例还提供一种偏光板,其包括:
偏光层,用于对入射光进行偏光处理后出射;
支撑层,设置在所述偏光层的上侧以及下侧,用于保护所述偏光层;
表面保护层,用于将所述偏光层的上表面与外界环境进行隔离,所述表面保护层与位于所述偏光层的上侧的所述支撑层连接;
剥离保护层,用于将所述偏光层的下表面与外界环境进行隔离,所述剥离保护层通过粘结层与位于所述偏光层的下侧的所述支撑层连接;以及
所述粘结层,用于将所述偏光板连接至阵列基板或彩膜基板上;
其中所述粘结层为具有导电物质的导电粘结层。
在本发明所述的偏光板中,所述导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂。
在本发明所述的偏光板中,所述树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种。
在本发明所述的偏光板中,所述树脂基体在所述导电粘结层中的比例为50%至80%。
在本发明所述的偏光板中,所述导电填料为石墨烯、碳纳米管或纳米银线。
在本发明所述的偏光板中,所述导电填料在所述导电粘结层中的比例为5%至30%。
在本发明所述的偏光板中,所述固化剂为三乙胺、乙二胺、N,N-二甲基对苯胺或异氰酸酯基化合物;所述添加剂为硅烷偶联剂、流平剂、抑泡剂或稀释剂。
在本发明所述的偏光板中,所述粘结层通过以下步骤制成:
将所述树脂基体和所述导电填料分散液按设定比例进行混合;
在混合后的所述导电填料分散液中加入所述固化剂;
在加入所述固化剂之后的所述导电填料分散液中加入所述添加剂,以获取达到预设粘度的涂胶样品;
将所述涂胶样品涂布在所述剥离保护层上;
对涂布了所述涂胶样品的所述剥离保护层进行烘干处理;以及
将所述烘干处理后的所述剥离保护层与所述支撑层进行贴合并固化,以得到所述偏光板。
在本发明所述的偏光板中,所述预设粘度为700 mPa∙s至900 mPa∙s。
本发明实施例还提供一种液晶显示面板,其包括阵列基板、彩膜基板、液晶层以及设置在所述阵列基板以及所述彩膜基板上的偏光板:
其中所述偏光板包括:
偏光层,用于对入射光进行偏光处理后出射;
支撑层,设置在所述偏光层的上侧以及下侧,用于保护所述偏光层;
表面保护层,用于将所述偏光层的上表面与外界环境进行隔离,所述表面保护层与位于所述偏光层的上侧的所述支撑层连接;
剥离保护层,用于将所述偏光层的下表面与外界环境进行隔离,所述剥离保护层通过粘结层与位于所述偏光层的下侧的所述支撑层连接;以及
所述粘结层,用于将所述偏光板连接至阵列基板或彩膜基板上;
其中所述粘结层为具有导电物质的导电粘结层。
在本发明所述的液晶显示面板中,所述导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂。
在本发明所述的液晶显示面板中,所述树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种。
在本发明所述的液晶显示面板中,所述树脂基体在所述导电粘结层中的比例为50%至80%。
在本发明所述的液晶显示面板中,所述导电填料为石墨烯、碳纳米管或纳米银线。
在本发明所述的液晶显示面板中,所述导电填料在所述导电粘结层中的比例为5%至30%。
在本发明所述的液晶显示面板中,所述固化剂为三乙胺、乙二胺、N,N-二甲基对苯胺或异氰酸酯基化合物;所述添加剂为硅烷偶联剂、流平剂、抑泡剂或稀释剂。
在本发明所述的液晶显示面板中,所述粘结层通过以下步骤制成:
将所述树脂基体和所述导电填料分散液按设定比例进行混合;
在混合后的所述导电填料分散液中加入所述固化剂;
在加入所述固化剂之后的所述导电填料分散液中加入所述添加剂,以获取达到预设粘度的涂胶样品;
将所述涂胶样品涂布在所述剥离保护层上;
对涂布了所述涂胶样品的所述剥离保护层进行烘干处理;以及
将所述烘干处理后的所述剥离保护层与所述支撑层进行贴合并固化,以得到所述偏光板。
在本发明所述的液晶显示面板中,所述预设粘度为700 mPa∙s至900 mPa∙s。
有益效果
相较于现有的偏光板及液晶显示面板,本发明的偏光板及液晶显示面板通过导电粘结层的设置可以较好的消除静电且制作成本较低;解决了现有的偏光板及液晶显示面板不能有效的消除静电以及制作成本较高的技术问题。
附图说明
图1为现有的偏光板的结构示意图;
图2为本发明的偏光板的优选实施例的结构示意图;
图3为本发明的偏光板的优选实施例的制作流程图。
本发明的最佳实施方式
以下各实施例的说明是参考附加的图式,用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语,例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等,仅是参考附加图式的方向。因此,使用的方向用语是用以说明及理解本发明,而非用以限制本发明。
在图中,结构相似的单元是以相同标号表示。
请参照图2,图2为本发明的偏光板的优选实施例的结构示意图。本优选实施例的偏光板20包括偏光层21、支撑层22、表面保护层23、剥离保护层24以及粘结层25。偏光层21用于对入射光进行偏光处理后出射;支撑层22设置在偏光层21的上侧以及下侧,用于保护偏光层21;表面保护层23用于将偏光层21的上表面与外界环境进行隔离,表面保护层23与位于偏光层21的上侧的支撑层22连接;剥离保护层24用于将偏光层21的下表面与外界环境进行隔离,剥离保护层24通过粘结层25与位于偏光层的下侧的支撑层22连接;粘结层25用于将偏光板20连接至阵列基板或彩膜基板上。在本优选实施例中,偏光板20的粘结层25为具有导电物质的导电粘结层。
该导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂。其中树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种。导电填料为石墨烯、碳纳米管或纳米银线等。固化剂为三乙胺、乙二胺、N,N-二甲基对苯胺或异氰酸酯基化合物等。添加剂为硅烷偶联剂、流平剂、抑泡剂或稀释剂等。其中树脂基体在整个导电粘结层中的比例为50%至80%,导电填料在整个导电粘结层中的比例为5%至30%,固化剂在整个导电粘结层中的比例为1%至5%,添加剂在整个导电粘结层中的比例为1%至10%。由于导电粘结层添加了纳米级的导电填料,因此该导电粘结层在保持导电能力的同时,还可保持较高的透过率。
下面通过图3详细说明本优选实施例的偏光板的制作流程,图3为本发明的偏光板的优选实施例的制作流程图。该制作流程包括:
步骤S301,将树脂基体和导电填料分散液按设定比例进行混合;
步骤S302,在混合后的导电填料分散液中加入固化剂;
步骤S303,在加入固化剂之后的导电填料分散液中加入添加剂,以获取达到预设粘度的涂胶样品;
步骤S304,将涂胶样品涂布在剥离保护层上;
步骤S305,对涂布了涂胶样品的剥离保护层进行烘干处理;
步骤S306,将烘干处理后的剥离保护层与支撑层进行贴合并固化,以得到偏光板。
下面详细说明本优选实施例的偏光板制作流程中各步骤的具体过程。
在步骤S301中,通过氧化还原法制备导电填料分散液,如石墨烯的分散液。然后将树脂基体和导电填料分散液按设定比例,如其中的树脂基体和导电填料的质量配比为100:20,进行混合。随后转到步骤S302。
在步骤S302中,待树脂基体在导电填料分散液中充分溶解并混合后,在混合后的导电填料分散液中加入固化剂,如质量分数为0.5%的芳香族聚异氰酸酯;随后转到步骤S303。
在步骤S303中,在加入固化剂之后的导电填料分散液中加入乙酸乙酯作为稀释溶剂,以获取粘度为700 mPa∙s至900 mPa∙s的涂胶样品;随后转到步骤S304。
在步骤S304中,使用涂布机将步骤S303获取的涂胶样品涂布在剥离保护层上,厚度约为25微米;随后转到步骤S305。
在步骤S305中,在100摄氏度左右的烘箱中,对涂布了涂胶样品的剥离保护层进行烘干处理;随后转到步骤S306。
在步骤S306中,待涂胶样品中的溶剂完全挥发后,将烘干处理后的剥离保护层与支撑层进行贴合,然后将贴合后的偏光板在预设的湿度环境中放置设定时间进行固化,以得到具有导电功能的偏光板。
这样即完成了本优选实施例的偏光板的制作流程。
本优选实施例的偏光板可在去除剥离保护层之后直接贴附在阵列基板或彩膜基板上,以有效的将偏光板、阵列基板以及彩膜基板上的静电导出,同时不需要增加偏光板的制作成本。
本发明还提供一种液晶显示面板,该液晶显示面板包括阵列基板、彩膜基板、设置在阵列基板和彩膜基板之间的液晶层以及设置在阵列基板和彩膜基板外侧的偏光板。
该偏光板包括偏光层、支撑层、表面保护层、剥离保护层以及粘结层。偏光层用于对入射光进行偏光处理后出射;支撑层设置在偏光层的上侧以及下侧,用于保护偏光层;表面保护层用于将偏光层的上表面与外界环境进行隔离,表面保护层与位于偏光层的上侧的支撑层连接;剥离保护层用于将偏光层的下表面与外界环境进行隔离,剥离保护层通过粘结层与位于偏光层的下侧的支撑层连接;粘结层用于将偏光板连接至阵列基板或彩膜基板上。偏光板的粘结层为具有导电物质的导电粘结层。
优选的,所述导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂。
优选的,所述树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种。
优选的,所述树脂基体在所述导电粘结层中的比例为50%至80%。
优选的,所述导电填料为石墨烯、碳纳米管或纳米银线。
优选的,所述导电填料在所述导电粘结层中的比例为5%至30%。
优选的,所述固化剂为三乙胺、乙二胺、N,N-二甲基对苯胺或异氰酸酯基化合物;所述添加剂为硅烷偶联剂、流平剂、抑泡剂或稀释剂。
优选的,所述粘结层通过以下步骤制成:
将所述树脂基体和所述导电填料分散液按设定比例进行混合;
在混合后的所述导电填料分散液中加入所述固化剂;
在加入所述固化剂之后的所述导电填料分散液中加入所述添加剂,以获取达到预设粘度的涂胶样品;
将所述涂胶样品涂布在所述剥离保护层上;
对涂布了所述涂胶样品的所述剥离保护层进行烘干处理;以及
将所述烘干处理后的所述剥离保护层与所述支撑层进行贴合并固化,以得到所述偏光板。
优选的,所述预设粘度为700 mPa∙s至900 mPa∙s。
本发明的偏光板及液晶显示面板通过导电粘结层的设置可以较好的消除静电且制作成本较低;解决了现有的偏光板及液晶显示面板不能有效的消除静电以及制作成本较高的技术问题。
综上所述,虽然本发明已以优选实施例揭露如上,但上述优选实施例并非用以限制本发明,本领域的普通技术人员,在不脱离本发明的精神和范围内,均可作各种更动与润饰,因此本发明的保护范围以权利要求界定的范围为准。

Claims (19)

  1. 一种偏光板,其包括:
    偏光层,用于对入射光进行偏光处理后出射;
    支撑层,设置在所述偏光层的上侧以及下侧,用于保护所述偏光层;
    表面保护层,用于将所述偏光层的上表面与外界环境进行隔离,所述表面保护层与位于所述偏光层的上侧的所述支撑层连接;
    剥离保护层,用于将所述偏光层的下表面与外界环境进行隔离,所述剥离保护层通过粘结层与位于所述偏光层的下侧的所述支撑层连接;以及
    所述粘结层,用于将所述偏光板连接至阵列基板或彩膜基板上;
    其中所述粘结层为具有导电物质的导电粘结层;
    其中所述导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂;
    所述树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种;
    所述导电填料为石墨烯、碳纳米管或纳米银线。
  2. 一种偏光板,其包括:
    偏光层,用于对入射光进行偏光处理后出射;
    支撑层,设置在所述偏光层的上侧以及下侧,用于保护所述偏光层;
    表面保护层,用于将所述偏光层的上表面与外界环境进行隔离,所述表面保护层与位于所述偏光层的上侧的所述支撑层连接;
    剥离保护层,用于将所述偏光层的下表面与外界环境进行隔离,所述剥离保护层通过粘结层与位于所述偏光层的下侧的所述支撑层连接;以及
    所述粘结层,用于将所述偏光板连接至阵列基板或彩膜基板上;
    其中所述粘结层为具有导电物质的导电粘结层。
  3. 根据权利要求2所述的偏光板,其中所述导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂。
  4. 根据权利要求3所述的偏光板,其中所述树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种。
  5. 根据权利要求4所述的偏光板,其中所述树脂基体在所述导电粘结层中的比例为50%至80%。
  6. 根据权利要求3所述的偏光板,其中所述导电填料为石墨烯、碳纳米管或纳米银线。
  7. 根据权利要求6所述的偏光板,其中所述导电填料在所述导电粘结层中的比例为5%至30%。
  8. 根据权利要求3所述的偏光板,其中所述固化剂为三乙胺、乙二胺、N,N-二甲基对苯胺或异氰酸酯基化合物;所述添加剂为硅烷偶联剂、流平剂、抑泡剂或稀释剂。
  9. 根据权利要求3所述的偏光板,其中所述粘结层通过以下步骤制成:
    将所述树脂基体和所述导电填料分散液按设定比例进行混合;
    在混合后的所述导电填料分散液中加入所述固化剂;
    在加入所述固化剂之后的所述导电填料分散液中加入所述添加剂,以获取达到预设粘度的涂胶样品;
    将所述涂胶样品涂布在所述剥离保护层上;
    对涂布了所述涂胶样品的所述剥离保护层进行烘干处理;以及
    将所述烘干处理后的所述剥离保护层与所述支撑层进行贴合并固化,以得到所述偏光板。
  10. 根据权利要求9所述的偏光板,其中所述预设粘度为700 mPa∙s至900 mPa∙s。
  11. 一种液晶显示面板,其包括阵列基板、彩膜基板、液晶层以及设置在所述阵列基板以及所述彩膜基板上的偏光板:
    其中所述偏光板包括:
    偏光层,用于对入射光进行偏光处理后出射;
    支撑层,设置在所述偏光层的上侧以及下侧,用于保护所述偏光层;
    表面保护层,用于将所述偏光层的上表面与外界环境进行隔离,所述表面保护层与位于所述偏光层的上侧的所述支撑层连接;
    剥离保护层,用于将所述偏光层的下表面与外界环境进行隔离,所述剥离保护层通过粘结层与位于所述偏光层的下侧的所述支撑层连接;以及
    所述粘结层,用于将所述偏光板连接至阵列基板或彩膜基板上;
    其中所述粘结层为具有导电物质的导电粘结层。
  12. 根据权利要求11所述的液晶显示面板,其中所述导电粘结层的材料包括树脂基体、导电填料、固化剂以及添加剂。
  13. 根据权利要求12所述的液晶显示面板,其中所述树脂基体包括环氧树脂、环氧-酚醛树脂、硅树脂、聚氨酯、聚丙烯酸树脂、丙烯酸酯共聚物以及掺杂聚苯乙烯磺酸酯的聚乙烯二氧噻吩中的至少一种。
  14. 根据权利要求13所述的液晶显示面板,其中所述树脂基体在所述导电粘结层中的比例为50%至80%。
  15. 根据权利要求12所述的液晶显示面板,其中所述导电填料为石墨烯、碳纳米管或纳米银线。
  16. 根据权利要求15所述的液晶显示面板,其中所述导电填料在所述导电粘结层中的比例为5%至30%。
  17. 根据权利要求12所述的液晶显示面板,其中所述固化剂为三乙胺、乙二胺、N,N-二甲基对苯胺或异氰酸酯基化合物;所述添加剂为硅烷偶联剂、流平剂、抑泡剂或稀释剂。
  18. 根据权利要求12所述的液晶显示面板,其中所述粘结层通过以下步骤制成:
    将所述树脂基体和所述导电填料分散液按设定比例进行混合;
    在混合后的所述导电填料分散液中加入所述固化剂;
    在加入所述固化剂之后的所述导电填料分散液中加入所述添加剂,以获取达到预设粘度的涂胶样品;
    将所述涂胶样品涂布在所述剥离保护层上;
    对涂布了所述涂胶样品的所述剥离保护层进行烘干处理;以及
    将所述烘干处理后的所述剥离保护层与所述支撑层进行贴合并固化,以得到所述偏光板。
  19. 根据权利要求18所述的液晶显示面板,其中所述预设粘度为700 mPa∙s至900 mPa∙s。
PCT/CN2015/086458 2015-05-14 2015-08-10 偏光板及液晶显示面板 WO2016179914A1 (zh)

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