WO2020220571A1 - 偏光片、显示面板及显示装置 - Google Patents

偏光片、显示面板及显示装置 Download PDF

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Publication number
WO2020220571A1
WO2020220571A1 PCT/CN2019/107417 CN2019107417W WO2020220571A1 WO 2020220571 A1 WO2020220571 A1 WO 2020220571A1 CN 2019107417 W CN2019107417 W CN 2019107417W WO 2020220571 A1 WO2020220571 A1 WO 2020220571A1
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WIPO (PCT)
Prior art keywords
polarizer
layer
color filter
conductive
filter substrate
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PCT/CN2019/107417
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English (en)
French (fr)
Inventor
黄俊锋
陈博才
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武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/611,482 priority Critical patent/US20210333458A1/en
Publication of WO2020220571A1 publication Critical patent/WO2020220571A1/zh

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Classifications

    • 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
    • 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
    • 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
    • G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/868—Arrangements for polarized light emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8793—Arrangements for polarized light emission
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

Definitions

  • the invention relates to the field of panels, in particular to a polarizer, a display panel and a display device.
  • Liquid crystal display or OLED display has been widely used and generally accepted by the market due to its advantages of lightness, thinness, and good display effect.
  • the market's requirements for the lightness and thinness of the display are constantly improving.
  • the polarizer is one of the main structures of the screen, and the requirement for the thickness of the body of the polarizer is that it can be thinner and thinner while maintaining normal functions, thereby reducing the overall thickness of the screen.
  • the industry has continued to research and develop the thickness of the polarizer from the initial single-polarization of about 200 ⁇ m, through the TAC and PVA structure to reduce the thickness, and gradually reduce its overall thickness to 100 ⁇ m.
  • the polarizing plate suppliers began to explore to further reduce the thickness by replacing TAC with thinner COP materials. What's more, the overall thickness of the TAC layer can be reduced to about 80 ⁇ m by reducing the TAC layer.
  • the POL with reduced TAC layer is mostly used in the lower polarizing plate with antireflection film, so that the overall thickness of the upper and lower polarizing plates can be reduced to about 160um.
  • narrow-frame mobile phones mainly use high-resistance film dot silver glue for ESD protection, and more display areas are reserved for design.
  • Current conductive polarizers need to be coated with longer silver glue lines in the silver glue dispensing process.
  • a large amount of silver glue increases the cost of the product (if the dot silver glue method is used, the contact area between the polarizer conductive glue and the silver glue Small, it is prone to poor contact, resulting in ESD damage during the later use of the product).
  • the silver glue line invades part of the border Broader area. If the product border is narrow, there is a risk of signal short circuit. Therefore, full-screen products mainly use high-resistance film, but due to the high cost of high-ance film, each panel will cost a few yuan more, which reduces the competitiveness of the product.
  • the existing panel includes an array substrate 10, a color filter substrate 20, a polarizer 30 and a silver glue layer 40.
  • the color filter substrate 20 is provided on the upper surface of the array substrate 10
  • the polarizer 30 is provided on the upper surface of the color filter substrate 20
  • the silver glue layer 40 is provided on the sides of the polarizer 30 and the color filter substrate 20, and extends to the surface of the array substrate 10.
  • the size of the polarizer 30 is smaller than the size of the color filter substrate 20, and space is reserved for the silver glue layer 40, which makes the screen-to-body ratio small, which is not suitable for the current pursuit of a full screen.
  • the purpose of the present invention is to solve the technical problems of high cost caused by the use of silver glue wires in the conductive polarizers, small contact area between the conductive polarizers and the silver glue wires and poor contact in the prior art.
  • the present invention provides a polarizer comprising: a support layer provided with a first surface and a second surface facing away from each other; a polarizing layer provided on the first surface of the support layer; and a conductive layer provided with On the surface of the polarizing layer away from the support layer.
  • the polarizer further includes a pressure sensitive adhesive, which is arranged on the surface of the support layer on the side away from the polarizer layer.
  • the material of the polarizing layer includes polyvinyl alcohol.
  • the material of the support layer includes cycloolefin polymer.
  • the material of the conductive layer includes a mixed material of conductive material, cellulose triacetate and thermosetting material.
  • the present invention also provides a display panel including the above-mentioned polarizer.
  • the display panel further includes: a color filter substrate, which is provided on the surface of the polarizer on the side where the pressure-sensitive adhesive is provided; and an array substrate, which is provided on the surface of the color filter substrate on the side away from the polarizer; A conductive pad is provided on the surface of the array substrate on one side away from the polarizer; and a silver glue layer, one end of which is provided on the surface of the conductive layer of the polarizer, and the other end is provided on the surface of the conductive pad of the array substrate.
  • the shape of the polarizer is consistent with the shape of the color filter substrate; the size of the polarizer is consistent with the size of the color filter substrate; the side of the polarizer is the same as the side of the color filter substrate Set flush.
  • the shape of the array substrate is consistent with the shape of the color filter substrate; the size of the array substrate is larger than the size of the color filter substrate.
  • the middle part of the silver glue layer is arranged on the side surface of the polarizer and the color filter substrate.
  • the present invention also provides a display device including the display panel.
  • the technical effect of the present invention is that the conductive layer is arranged on the uppermost layer of the polarizer, and the silver glue layer is directly dotted on the conductive layer. There is no need to reserve space for the silver glue layer on the color film substrate, so that the size and color of the polarizer The size of the film substrate is consistent, and the screen-to-body ratio is increased, making the polarizer suitable for full-screen narrow-frame panels.
  • the silver glue layer is arranged in the manner of dispensing silver glue, which reduces the process difficulty, saves the amount of silver glue used, reduces product cost and improves product competitiveness.
  • FIG. 1 is a schematic diagram of the structure of a display panel in the prior art
  • FIG. 2 is a schematic structural diagram of a display panel according to an embodiment of the invention.
  • FIG. 3 is a top view of a display panel according to an embodiment of the invention.
  • FIG. 4 is a schematic diagram of the structure of the display device according to the present invention.
  • Polarizer 310, conductive layer; 320, support layer; 330, polarizing layer; 340, protective layer;
  • the component can be directly placed on the other component; there may also be an intermediate component on which the component is placed , And the intermediate component is placed on another component.
  • a component is described as “installed to” or “connected to” another component, both can be understood as directly “installed” or “connected”, or a component is “installed to” or “connected to” through an intermediate component Another component.
  • this embodiment provides a display panel, which includes an array substrate 1, a color filter substrate 2, a polarizer 3, and a silver glue layer 4.
  • the color filter substrate 2 is arranged above the array substrate 1.
  • the size of the color filter substrate 2 is smaller than the size of the array substrate 1, which facilitates the subsequent coating of the silver glue layer 4; the shape of the color filter substrate 2 is consistent with the shape of the array substrate 1. In this embodiment, it is preferably rectangular.
  • the polarizer 3 includes a supporting layer 32, a polarizing layer 33 and a conductive layer 34.
  • the principle of the polarizer is that because iodine molecules are arranged in the same direction, they will produce asymmetric electron density, so there is a certain difference in the absorption coefficient of polarized light in different directions. If the light polarization direction and the long axis direction of the iodine molecular chain remain 90°, then polarized light can pass. On the contrary, the intensity of the transmitted light will continue to decrease, or even completely shielded. Therefore, it can be concluded that the polarization of the long chain of iodine molecules is good.
  • the material of the support layer 32 is cycloolefin polymer COP.
  • the cycloolefin polymer COP is an optical material that has developed rapidly in recent years. Its optical properties are higher than those of the existing commonly used support layer material triacetyl cellulose TAC, and its mechanical properties are The temperature resistance and weather resistance are far better than that of cellulose triacetate TAC, so the support layer 3 in this embodiment uses the cycloolefin polymer COP.
  • the material of the pressure-sensitive adhesive 31 is acrylic adhesive, and the pressure-sensitive adhesive 31 has good re-peelability and strong holding power to ensure that the polarizer 3 and the color film substrate 2 are perfectly bonded.
  • the shape of the polarizer 3 is consistent with the shape of the color filter substrate 2, and in this embodiment, it is preferably rectangular.
  • the size of the polarizer 3 is consistent with the size of the color filter substrate 2, and the side of the polarizer 3 is flush with the side of the color filter substrate 2.
  • the polarizing layer 33 is used as the core film layer of the polarizer 3 and is arranged on the upper surface of the supporting layer 32.
  • the material of the polarizing layer 33 is polyvinyl alcohol PVA.
  • the polarizing layer 33 has good transparency and polarization characteristics; the polarizing layer 33 is composed of iodine molecules. Good affinity and high orientation when stretched; the polyvinyl alcohol PVA has good water solubility, so the polarizing layer 33 is relatively weak in water resistance, so other film layers are required to have good waterproof performance to protect the polarizing layer 33.
  • the conductive layer 34 is provided on the upper surface of the polarizing layer 33, and the conductive layer 34 is a film layer made of a conductive material melted with a protective material.
  • the protective material is cellulose triacetate TAC.
  • the conductive material includes organic conductive polymer, Inorganic metal oxides, etc., the conductive material is melted into the protective material to form a mixed material, and the mixed material is subjected to a surface hardening treatment (Hard Costing, HC), and finally the conductive layer 34 is formed.
  • the conductive layer 34 is arranged on the top of the polarizer 3 and does not affect the polarization performance of the polarizer 3.
  • the conductive principle is the same as that of the existing polarizer, and does not affect the conductive performance of the polarizer.
  • the polyvinyl alcohol PVA will quickly deform and shrink in a warm environment.
  • the cellulose triacetate TAC has the effect of preventing shrinkage of the polyvinyl alcohol PVA. Therefore, the conductive layer 34 is used to protect the polarizing layer 33.
  • the conductive material is melted into the protective material to form a conductive layer with both conductive and protective functions, which reduces the thickness of the polarizer while ensuring the quality of the polarizer, and can further reduce the thickness of the panel.
  • the size of the polarizer 3 is consistent with the size of the color filter substrate 2, increasing the contact area between the polarizer 3 and the color filter substrate 2, and increasing the screen-to-body ratio, so that the polarizer can be applied to a full-screen narrow-frame panel.
  • One end of the silver glue layer 4 extends to the upper surface of the polarizer 3, and the other end thereof extends to the conductive pad (not shown) on the upper surface of the array substrate 1.
  • the middle part of the silver glue layer 4 is provided on the polarizer 3 and the color film On the side of the substrate 2, the silver glue layer 4 connects the color filter substrate 2 and the array substrate 1.
  • the main components of the silver glue layer 4 are matrix resin, silver powder and additives.
  • the silver glue layer 4 is a special adhesive with both adhesive and conductive properties. Therefore, the silver glue layer 4 adheres the polarizer 3, the color filter substrate 2 and the array substrate 1 on the one hand, and utilizes its good conductivity on the other hand.
  • the mobile phone will generate static electricity when passing through each machine during the assembly process, and the mobile phone will also generate static electricity when the protective film is torn off.
  • the human body In the process of using the mobile phone, the human body will also generate static electricity during the manual assembly process, causing static electricity breakdown.
  • the silver glue layer 4 releases the various static electricity generated above through the conductive pad on the array substrate 1.
  • the technical effect of the panel described in this embodiment is that the conductive layer is provided on the uppermost layer of the polarizer, and the silver glue layer is directly dotted on the conductive layer without affecting the polarization and conductivity of the polarizer. Reserve the space for the silver glue layer on the color film substrate to make the size of the polarizer consistent with the size of the color film substrate, increase the screen-to-body ratio, and make the polarizer suitable for full-screen narrow-frame panels.
  • the panel described in this embodiment adopts a silver glue dispensing method to provide a silver glue layer, which reduces the process difficulty, saves the amount of silver glue used, reduces product costs, and improves product competitiveness.
  • this embodiment also provides a display device, including a display panel 100 and a backlight module 200.
  • the display panel 100 is the aforementioned display panel.
  • the backlight module 200 can be a direct-lit backlight module or The edge-type backlight modules are all existing technologies, and will not be detailed here.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种偏光片（3）、一种显示面板（100）及显示装置，偏光片（3）包括支撑层（32）、偏光层（33）及导电层（34）。显示面板（100）包括偏光片（3）、彩膜基板（2）、阵列基板（1）及银胶层（4）。显示装置包括显示面板（100）。技术效果在于，减少银胶的使用量，节约成本；增大偏光片（3）与彩膜基板（2）的接触面积，加大屏占比，使得偏光片（3）可应用于全面屏窄边框手机。

Description

偏光片、显示面板及显示装置 技术领域
本发明涉及面板领域，特别涉及一种偏光片、一种显示面板及显示装置。
 背景技术
液晶显示屏或是OLED显示屏由于其轻、薄、显示效果好等优点，已被广泛应用并被市场普遍接受。但市场对于显示屏的轻薄要求却是在不断提高。近年来，由其是手机制造商对整机厚度减薄的持续需求，使得其对手机屏幕(TFTLCD\OLED)的厚度持续要求减薄。这其中偏光片作为屏幕构成的主要结构之一，对偏光片的本体厚度的要求也是希望其能在保持正常功能的同时，能够越来越薄，从而减薄屏幕的整体厚度。
对此，业界不断研发，将偏光板的厚度从最初的单偏200μm左右，通过TAC及PVA结构减薄，将其整体厚度逐渐降到100μm。之后，各偏光板供应商开始探索通过将TAC更换为更薄的COP材料以进一步的降低厚度。更有甚者，通过减少TAC层来实现将其整体厚度降低到80μm左右。考虑到支持强度收缩及信赖性等问题，减少TAC层的POL多使用在带增反膜的下偏光板中，这样可以将上、下偏光板的整体厚度降到160um左右。
随着面板行业的快速发展，窄边框显示屏已成为未来几年的发展趋势。目前窄边框手机主要采用高阻膜点银胶方式进行ESD防护，为设计预留更多显示区。当前的导电偏光片，在点银胶作业工艺中需涂布较长的银胶线，大量的银胶提高了产品的成本（若采用点状银胶方法，偏光片导电胶与银胶接触面积较小，极易出现接触不良，导致产品后期使用过程中的ESD击伤），另一方面，银胶线侵占了部分边框Broader区域，若产品边框做窄极存在信号短路风险。故全面屏产品主要使用高阻膜，但是由于高祖膜成本较高，每片面板要多出几块钱成本，降低了产品的竞争力。
如图1所示，现有的面板包括阵列基板10、彩膜基板20、偏光片30及银胶层40。
彩膜基板20设于阵列基板10的上表面，偏光片30设于彩膜基板20的上表面，银胶层40设于偏光片30及彩膜基板20的侧面，且延伸至阵列基板10的上表面。偏光片30的尺寸要小于彩膜基板20的尺寸，为银胶层40预留空间，这就使得屏占比偏小，不适合现在对全面屏的追求。
 技术问题
本发明的目的在于，解决现有技术中导电偏光片使用银胶线导致的高成本、导电偏光片与银胶线接触面积小而接触不良等技术问题。
 技术解决方案
为实现上述目的，本发明提供一种偏光片，包括：支撑层其设有相互背离的第一表面及第二表面；偏光层，设于所述支撑层的第一表面；以及导电层，设于所述偏光层远离所述支撑层一侧的表面。
进一步地，所述偏光片还包括压敏胶，设于所述支撑层远离所述偏光层一侧的表面。
进一步地，所述偏光层的材质包括聚乙烯醇。
进一步地，所述支撑层的材质包括环烯烃聚合物。
进一步地，所述导电层的材质包括导电材料、三醋酸纤维素及热固化材料的混合材料。
为实现上述目的，本发明还提供一种显示面板，所述显示面板包括上述偏光片。
进一步地，所述显示面板还包括：彩膜基板，设于所述偏光片设有压敏胶一侧的表面；阵列基板，设于所述彩膜基板远离所述偏光片一侧的表面；所述阵列基板远离所述偏光片一侧的表面设有导电垫；以及银胶层，其一端设于所述偏光片的导电层表面，其另一端设于所述阵列基板的导电垫表面。
进一步地，所述偏光片的形状与所述彩膜基板的形状一致；所述偏光片的尺寸与所述彩膜基板的尺寸一致；所述偏光片的侧边与所述彩膜基板侧边平齐设置。
进一步地，所述阵列基板的形状与所述彩膜基板的形状一致；所述阵列基板的尺寸大于所述彩膜基板的尺寸。
进一步地，所述银胶层的中部设于所述偏光片及所述彩膜基板的侧面。
为实现上述目的，本发明还提供一种显示装置，包括所述显示面板。
 有益效果
本发明的技术效果在于，导电层设于偏光片的最上层，银胶层直接点在所述导电层上，无需在彩膜基板上预留银胶层的空间，使得偏光片的尺寸与彩膜基板的尺寸一致，提高屏占比，使得偏光片适用于全面屏窄边框面板。本发明采用点银胶的方式设置银胶层，降低工艺难度，节省银胶的使用量，降低产品成本，提高产品竞争力。
 附图说明
图1为现有技术中显示面板的结构示意图；
图2为本发明实施例所述的显示面板的结构示意图；
图3为本发明实施例所述显示面板的俯视图；
图4为本发明所述所述显示装置的结构示意图。
部分组件标识如下：
10、阵列基板；20、彩膜基板；
30、偏光片；310、导电层；320、支撑层；330、偏光层；340、保护层；
40、银胶层；
1、阵列基板；2、彩膜基板；
3、偏光片；31、压敏胶；32、支撑层；33、偏光层；34、导电层；
4、银胶层；
100、显示面板；200、背光模组。
 本发明的最佳实施方式
以下结合说明书附图详细说明本发明的优选实施例，以向本领域中的技术人员完整介绍本发明的技术内容，以举例证明本发明可以实施，使得本发明公开的技术内容更加清楚，使得本领域的技术人员更容易理解如何实施本发明。然而本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例，下文实施例的说明并非用来限制本发明的范围。
本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是附图中的方向，本文所使用的方向用语是用来解释和说明本发明，而不是用来限定本发明的保护范围。
在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。此外，为了便于理解和描述，附图所示的每一组件的尺寸和厚度是任意示出的，本发明并没有限定每个组件的尺寸和厚度。
当某些组件，被描述为“在”另一组件“上”时，所述组件可以直接置于所述另一组件上；也可以存在一中间组件，所述组件置于所述中间组件上，且所述中间组件置于另一组件上。当一个组件被描述为“安装至”或“连接至”另一组件时，二者可以理解为直接“安装”或“连接”，或者一个组件通过一中间组件“安装至”或“连接至”另一个组件。
如图2~3所示，本实施例提供一种显示面板，包括阵列基板1、彩膜基板2、偏光片3及银胶层4。
彩膜基板2设于阵列基板1的上方，彩膜基板2的尺寸小于阵列基板1的尺寸，便于后续银胶层4的涂布；彩膜基板2的形状与阵列基板1的形状一致，在本实施例中优选为矩形。
偏光片3包括支撑层32、偏光层33及导电层34。偏光片的原理在于，因为碘分子沿着同一方向排列时会产生不对称电子密度，所以在不同方向上的极化光吸收系数有一定差别，如果光线极化方向和碘分子链长轴方向保持 90°，那么极化光能够通过。反之，透过光的强度会不断降低，甚至到完全遮蔽。因此，可以得出碘分子长链的起偏性良好。
支撑层32的材质为环烯烃聚合物COP，所述环烯烃聚合物COP为近年来快速发展的光学材料，其光学特性高于现有的常用支撑层材料三醋酸纤维素TAC，且机械性、耐温性及耐候性远超于三醋酸纤维素TAC，故在本实施例中的支撑层3采用环烯烃聚合物COP。
偏光片3支撑层32一侧面通过压敏胶31粘合至彩膜基板2。压敏胶31的材质为丙烯酸类胶，压敏胶31具有良好的再剥离性和较强的持粘力，保证偏光片3与彩膜基板2的完好贴合。偏光片3的形状与彩膜基板2的形状一致，在本实施例中，优选为矩形。偏光片3的尺寸与彩膜基板2的尺寸一致，偏光片3的侧边与彩膜基板2的侧边平齐设置。
偏光层33作为偏光片3的核心膜层，设于支撑层32的上表面，偏光层33的材质为聚乙烯醇PVA，偏光层33透明性好，具有偏光特性；偏光层33与碘分子的亲和性好，在被拉伸时取向性高；所述聚乙烯醇PVA的水溶性好，因此偏光层33防水性比较弱，所以需要其他膜层具有良好的防水性能以保护偏光层33。
导电层34设于偏光层33的上表面，导电层34为导电材料融于保护材料制作而成的膜层，所述保护材料为三醋酸纤维素TAC，所述导电材料包括有机导电高分子、无机金属氧化物等，所述导电材料融于所述保护材料后形成一混合材料，对所述混合材料进行表面硬化处理（Hard Costing，HC），最终形成导电层34。
导电层34设于偏光片3的顶部，不影响偏光片3的偏光性能，导电原理也与现有的偏光片的导电原理相同，并不会影响偏光片的导电性能。
所述聚乙烯醇PVA在温热的环境中会很快变形、收缩，所述三醋酸纤维素TAC对所述聚乙烯醇PVA有防止回缩的作用，因此，导电层34用以保护偏光层33。
将所述导电材料融于所述保护材料，形成同时具有导电作用及保护作用的导电层，在保证偏光片的质量的同时减小了偏光片的厚度，可进一步减薄面板的厚度。
偏光片3的尺寸与彩膜基板2的尺寸一致，增大偏光片3与彩膜基板2的接触面积，加大屏占比，使得偏光片可应用于全面屏窄边框面板。
银胶层4的一端延伸至偏光片3的上表面，其另一端延伸至阵列基板1的上表面的导电垫（图未示）上，银胶层4的中部设于偏光片3及彩膜基板2的侧面，银胶层4将彩膜基板2与阵列基板1相连。银胶层4的主要成分为基体树脂、银粉及添加剂等。银胶层4为同时具备粘接性能和导电性能的特殊胶粘剂，因此，银胶层4一方面粘合偏光片3、彩膜基板2及阵列基板1，另一方面利用其良好的导电性能。手机在组装的过程中经过各个机台会产生静电，手机在撕保护膜的时候也会产生静电，在运用手机的过程中，在手动组装过程中人体也会产生静电造成静电击穿等，所以银胶层4通过阵列基板1上的导电垫释放上述产生的各种静电。
本实施例所述的面板的技术效果在于，导电层设于偏光片的最上层，在不影响偏光片的偏光性能及导电性能的前提下，银胶层直接点在所述导电层上，无需在彩膜基板上预留银胶层的空间，使得偏光片的尺寸与彩膜基板的尺寸一致，提高屏占比，使得偏光片适用于全面屏窄边框面板。本实施例所述的面板采用点银胶的方式设置银胶层，降低工艺难度，节省银胶的使用量，降低产品成本，提高产品竞争力。
如图4所示，本实施例还提供一种显示装置，包括显示面板100及背光模组200，显示面板100即为前文所述的显示面板，背光模组200可为直下式背光模组或侧入式背光模组，都为现有技术，在此不作具体赘述。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (11)

  1. 一种偏光片，其包括：
    支撑层，其设有相互背离的第一表面及第二表面；
    偏光层，设于所述支撑层的第一表面；以及
    导电层，设于所述偏光层远离所述支撑层一侧的表面。
  2. 如权利要求1所述的偏光片，其还包括
    压敏胶，设于所述支撑层的第二表面。
  3. 如权利要求1所述的偏光片，其中，
    所述偏光层的材质包括聚乙烯醇。
  4. 如权利要求1所述的偏光片，其中，
    所述支撑层的材质包括环烯烃聚合物。
  5. 如权利要求1所述的偏光片，其中，
    所述导电层的材质包括导电材料、三醋酸纤维素及热固化材料的混合材料。
  6. 一种显示面板，包括如权利要求1所述的偏光片。
  7. 如权利要求6所述的面板，其还包括：
    彩膜基板，设于所述偏光片设有压敏胶一侧的表面；
    阵列基板，设于所述彩膜基板远离所述偏光片一侧的表面；所述阵列基板远离所述偏光片一侧的表面设有导电垫；以及
    银胶层，其一端设于所述偏光片的导电层表面，其另一端设于所述阵列基板的导电垫表面。
  8. 如权利要求7所述的面板，其中，
    所述偏光片的形状与所述彩膜基板的形状一致；
    其中，所述偏光片的侧边与所述彩膜基板侧边平齐设置。
  9. 如权利要求7所述的面板，其中，
    所述阵列基板的形状与所述彩膜基板的形状一致；
    所述阵列基板的尺寸大于所述彩膜基板的尺寸。
  10. 如权利要求7所述的面板，其中，
    所述银胶层的中部设于所述偏光片及所述彩膜基板的侧面。
  11. 一种显示装置，包括如权利要求6所述的显示面板。
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