WO2019144467A1 - 偏光片及液晶显示面板制备方法 - Google Patents

偏光片及液晶显示面板制备方法 Download PDF

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Publication number
WO2019144467A1
WO2019144467A1 PCT/CN2018/077967 CN2018077967W WO2019144467A1 WO 2019144467 A1 WO2019144467 A1 WO 2019144467A1 CN 2018077967 W CN2018077967 W CN 2018077967W WO 2019144467 A1 WO2019144467 A1 WO 2019144467A1
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WIPO (PCT)
Prior art keywords
polarizer
layer
protective layer
polarizing layer
substrate
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PCT/CN2018/077967
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English (en)
French (fr)
Inventor
陈珍霞
陈黎暄
Original Assignee
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 US15/761,433 priority Critical patent/US20190227376A1/en
Publication of WO2019144467A1 publication Critical patent/WO2019144467A1/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
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a polarizer and a method of fabricating the liquid crystal display panel having the polarizer.
  • the polarizing member is a very important part of the TFT-LCD panel (thin film transistor-liquid crystal display device).
  • An LCD without a polarizing component does not display a perfect picture. At the same time, it largely determines the key characteristics of the LCD, such as transmittance, brightness, thickness, and the like.
  • the conventional polarizer is pressed by a multilayer film and has a thickness of more than 200 ⁇ m, and has poor heat resistance and heat and humidity resistance, and cannot meet the needs of a new generation of display.
  • the polarizer of the prior art has the defects of large film thickness and weak resistance to moisture and heat, which is disadvantageous for realizing lightness and thinness of the display device and prolonging the service life of the display device.
  • the invention provides a polarizer, which has the characteristics of small thickness and strong resistance to moisture and heat, can realize thinning and thinning of the display device, and prolong the service life of the display device; to solve the polarizing film of the prior art, the film thickness is large, and the moisture resistance is high.
  • the weaker defect is not conducive to the realization of the thinness of the display device and the technical problem of prolonging the service life of the display device.
  • the present invention provides a polarizer that is attached to a surface of a substrate for filtering light transmitted through the substrate to form polarized light.
  • the polarizer comprises:
  • the polarizing layer is provided with a bonding glue on one side thereof, and the polarizing layer is adhered to the substrate through the bonding glue; the polarizing layer is a dye polarizing film;
  • a peelable adhesive disposed on the opposite side of the polarizing layer and capable of failing to peel off by adjusting a temperature of the bonding environment
  • a protective layer which is adhered to the polarizing layer by the peelable adhesive to support and protect the polarizing layer
  • the temperature of the bonding environment is changed, and the protective layer is removed along with the peelable adhesive to reduce the thickness of the polarizer.
  • the protective layer is made of a polyethylene terephthalate film.
  • the protective layer is a cellulose triacetate film.
  • a side of the protective layer away from the polarizing layer is provided with a supporting layer, and the supporting layer and the protective layer are adhered by the adhesive.
  • the support layer is a cellulose triacetate film.
  • the invention also provides another polarizer disposed on the surface of the substrate for filtering the light transmitted through the substrate to form polarized light, the polarizer comprising:
  • a polarizing layer is provided with a bonding glue on one side thereof, and the polarizing layer is adhered to the substrate through the bonding glue;
  • a peelable adhesive disposed on the opposite side of the polarizing layer and capable of failing to peel off by adjusting a temperature of the bonding environment
  • a protective layer which is adhered to the polarizing layer by the peelable adhesive to support and protect the polarizing layer
  • the temperature of the bonding environment is changed, and the protective layer is removed along with the peelable adhesive to reduce the thickness of the polarizer.
  • the protective layer is made of a polyethylene terephthalate film.
  • the protective layer is a cellulose triacetate film.
  • a side of the protective layer away from the polarizing layer is provided with a supporting layer, and the supporting layer and the protective layer are adhered by the adhesive.
  • the support layer is a cellulose triacetate film.
  • a method of fabricating a liquid crystal display panel comprising the above polarizer, the method comprising:
  • the first glass substrate is disposed on a side of the upper polarizer, opposite to a side of the second glass substrate on which the lower polarizer is disposed, and then the array substrate and the color filter substrate are disposed. Boxing; among them,
  • the S10 specifically includes:
  • the polarizing layer of the lower polarizer is aligned with the first glass substrate
  • the S20 specifically includes:
  • the polarizing layer of the upper polarizer is aligned with the second glass substrate
  • the polarizing layer of the upper polarizer adopts a dye polarizing film
  • the polarizing layer of the lower polarizer also adopts a dye polarizing film
  • the protective layer of the lower polarizer is a polyethylene terephthalate film
  • the protective layer of the upper polarizer is also made of a polyethylene terephthalate film.
  • the protective layer of the lower polarizer is made of a cellulose triacetate film
  • the protective layer of the upper polarizer is also made of a cellulose triacetate film.
  • the invention has the beneficial effects that the polarizer provided by the invention adopts a dye polarizing layer with strong anti-moisture heat resistance, and saves a plurality of protective film layers, thereby reducing the thickness of the polarizer and further reducing the liquid crystal.
  • the overall thickness of the display panel is advantageous for realizing lightness and thinness of the display device, and has strong resistance to moisture and high temperature, thereby improving the display quality of the display device and prolonging the service life of the display device.
  • FIG. 1 is a schematic structural view of a deflecting sheet provided by the present invention.
  • FIG. 2 is a schematic structural view of a deflecting sheet provided by the present invention.
  • FIG. 3 is another schematic structural view of a deflecting sheet provided by the present invention.
  • FIG. 4 is a flow chart of a method for preparing a liquid crystal display panel having the invention of a polarizer.
  • FIG. 5 is a schematic structural view of a liquid crystal display panel prepared by the preparation method of FIG. 4.
  • FIG. 5 is a schematic structural view of a liquid crystal display panel prepared by the preparation method of FIG. 4.
  • the polarizing plate provided by the present invention adopts a dye polarizing film, and the dye polarizing film is heat-resistant and compared with a polarizer prepared by a conventional method using a raw material iodine as a dichroic substance. Light resistance is better.
  • the polarizing layer 101 is provided with a bonding adhesive 102, and the polarizing layer 101 is bonded to the substrate through the bonding adhesive 102;
  • the substrate is a rigid glass substrate, a fiber substrate, a metal substrate, or the like.
  • the substrate is a flexible polyimide substrate.
  • the adhesive 102 is made of a pressure sensitive adhesive material.
  • the peelable adhesive 103 is provided on the opposite side of the polarizing layer 101; the peelable adhesive 103 is a temperature change peeling adhesive which can be peeled off by adjusting the temperature of the bonding environment; for example, the peelable adhesive 103 is peeled off at a low temperature. Glue, then put it in a low temperature environment for a certain period of time, you can achieve the failure of the peeling glue. Similarly, when the peelable adhesive 103 is a high temperature peeling adhesive, it can be placed in a high temperature environment for a certain period of time. The stripping glue is invalidated.
  • the protective layer 104 is adhered to the polarizing layer 101 by the peelable adhesive 103 to support and protect the polarizing layer 101.
  • the protective layer 104 is used to protect the surface of the polarizing layer 101 from being removed. Physically damaged or chemically damaged, at the same time, the protective layer 104 can increase the thickness of the polarizing layer 101, thereby improving the toughness of the polarizing layer 101.
  • the polarizing layer 101 Bubbles and wrinkles are less likely to occur during the process of coating on the surface of the substrate, and even if a small amount of bubbles appear, it can be solved by degassing by pressure heating.
  • the protective layer 104 may adopt two or more laminated protective films, and the laminated protective films are adhered by the bonding adhesive 102 to enhance the supporting effect on the polarizing layer 101, thereby further reducing Bubbles and wrinkles.
  • the polarizing layer 101, the peelable adhesive 103, and the protective layer 104 are combined by a single compounding method, that is, the peelable adhesive is first disposed on the surface of the protective layer 104. 103. Subsequently, the polarizing layer 101 is attached to the surface of the peelable adhesive 103, and finally a bonding adhesive 102 is disposed on the surface of the polarizing layer 101.
  • the polarizing layer 101, the peelable adhesive 103, and the protective layer 104 are combined by a two-time composite method.
  • the protective layer 104 and the protective layer are The peelable adhesive 103 is composited, and in the compounding process, the protective layer 104 is adhered to the peelable adhesive 103 by a process such as adjusting pressure heating; in the second step, the protective layer 104 and the peelable layer are peeled off;
  • the composite layer of the glue 103 is combined with the polarizing layer 101.
  • the process of adjusting the pressure heating is used to make the polarizing layer 101 and the peelable adhesive 103 have low adhesion, so as to facilitate the later peeling process.
  • the composite layer of the protective layer 104 and the peelable adhesive 103 can be simultaneously peeled off.
  • the polarizer provided by the present invention includes the polarizing layer 201, the peelable adhesive 202, and the protective layer.
  • One side of the polarizing layer 201 is provided with a bonding adhesive 203, and the polarizing layer 201 is adhered to the substrate through the adhesive 203; the peelable layer 201 is provided on the opposite side of the polarizing layer 201.
  • the adhesive 202 can be detached by adjusting the temperature of the bonding environment; the protective layer is adhered to the polarizing layer 201 through the peelable adhesive 202 to achieve the polarizing layer 201. Support and protection.
  • the bonding environment temperature is changed, and the protective layer is removed along with the peelable adhesive 202 to reduce the thickness of the polarizer.
  • the protective layer adopts a polyethylene terephthalate film 204; the polyethylene terephthalate film 204 has a low water permeability, and the polarizing layer 201 can be prevented from being processed in the liquid crystal display panel process. Immersion in water vapor affects the polarization effect.
  • the polarizer provided by the present invention includes the polarizing layer 301, the peelable adhesive 302, and the protective layer.
  • One side of the polarizing layer 301 is provided with a bonding adhesive 303, and the polarizing layer 301 is adhered to the substrate through the adhesive 303; the peelable layer 301 is provided on the opposite side of the polarizing layer 301.
  • the adhesive 302 can be detached by adjusting the temperature of the bonding environment; the protective layer is adhered to the polarizing layer 301 through the peelable adhesive 302 to achieve the polarizing layer 301. Support and protection.
  • the protective layer adopts a cellulose triacetate film 304; the cellulose triacetate film 304 has a better toughness, and after the composite layer 301 is combined, the polarizing layer 301 can be avoided. Air bubbles and wrinkles are prone to occur during the application process.
  • a method for fabricating a liquid crystal display panel including the above polarizer includes:
  • a first glass substrate is provided, then a lower polarizer is disposed on the first glass substrate, and finally a thin film transistor array is disposed on the lower polarizer to form an array substrate.
  • the first glass substrate is disposed on a side of the upper polarizer, opposite to a side of the second glass substrate on which the lower polarizer is disposed, and then the array substrate and the color filter substrate are disposed.
  • the array substrate and the color filter substrate are disposed into a box.
  • the S10 specifically includes: S101, the polarizing layer of the lower polarizer is aligned with the first glass substrate; S102, adjusting the bonding environment temperature, so that the peelable adhesive on the lower polarizer is invalid; S103, removing the protective layer and the peelable adhesive, leaving the lower polarizing layer, and completing bonding of the lower polarizer and the first glass substrate.
  • the S20 specifically includes: S201, the polarizing layer of the upper polarizer is aligned with the second glass substrate; S202, adjusting the bonding environment temperature, so that the peelable adhesive on the upper polarizer is invalid; S203, removing the protective layer and the peelable adhesive, leaving the upper polarizing layer, and completing bonding of the upper polarizer and the second glass substrate.
  • a liquid crystal display panel prepared by the method for fabricating a liquid crystal display panel according to the present invention includes an array substrate 501 and a color filter substrate 502 disposed opposite each other, and the array substrate 501 and the color filter substrate 502 are disposed. There is a liquid crystal layer 503.
  • a backlight module is disposed at the bottom of the color filter substrate 502, and the backlight film layer includes a light guide plate 504 and a light source 505 located on the light incident side of the light guide plate 504.
  • the array substrate 501 includes a first glass substrate 506.
  • the first glass substrate 506 is provided with a lower polarizer 507, and the lower polarizer 507 is provided with a thin film transistor array 508.
  • the color filter substrate 502 includes a second glass substrate 509.
  • the second glass substrate 509 is provided with an upper polarizer 510, and the upper polarizer 510 is provided with a color resist layer 511.
  • One side of the first glass substrate 506 on which the upper polarizer 510 is disposed is disposed opposite to a side on which the second glass substrate 509 is provided with the lower polarizer 507.
  • the upper polarizer 510 and the lower polarizer 507 are both built in the liquid crystal display panel.
  • the polarizer has no support film and does not warp because the support film is heated.
  • Dye polarizers are more resistant to high temperatures than conventional iodine-based polarizers and are not susceptible to failure due to high temperatures.
  • the invention has the beneficial effects that the polarizer provided by the invention adopts a dye polarizing layer with strong anti-moisture heat resistance, and saves a plurality of protective film layers, thereby reducing the thickness of the polarizer and further reducing the liquid crystal.
  • the overall thickness of the display panel is advantageous for realizing lightness and thinness of the display device, and has strong resistance to moisture and high temperature, thereby improving the display quality of the display device and prolonging the service life of the display device.

Abstract

一种偏光片，贴设在基板表面，偏光片包括：偏光层（101），其一侧设置有贴合胶（102），偏光层（101）通过贴合胶（102）与基板相贴合；可剥离胶（103），设置于偏光层（101）的相对另一侧，可通过调节贴合环境温度而失效剥离；保护层（104），通过可剥离胶（103）与偏光层（101）相贴合，用以实现对偏光层（101）的支撑和保护。

Description

偏光片及液晶显示面板制备方法 技术领域
本发明涉及显示技术领域，尤其涉及一种偏光片及具有该偏光片的液晶显示面板制备方法。
 背景技术
随着科技的发展和社会的进步，人们对于信息交流和传递等方面的依赖程度日益增加。而显示器件作为信息交换和传递的主要载体和物质基础，现已成为众多从事信息光电研究科学家争相抢占的热点和高地。而偏光部件是TFT-LCD面板（薄膜晶体管-液晶显示装置）中非常重要的一部分。没有偏光部件的LCD不能完美的显示画面，同时，它也很大程度上决定着LCD的关键特性指标，比如穿透率，亮度，厚度等等。
在液晶显示的发展趋势中，随着QD（量子点）在LCD中的应用、超薄LCD、极端环境使用特种LCD，柔性显示等新型显示的驱动下，内置偏光片的需求变得更加强烈，成为目前亟待解决的难题之一。然而，传统的偏光片由多层膜压制而成，且厚度大于200um，且耐热和耐湿热性能差，无法满足新一代的显示需求。
综上所述，现有技术的偏光片，存在膜厚较大，抗湿热能力较弱的缺陷，不利于实现显示装置的轻薄化，以及延长显示装置的使用寿命。
 技术问题
本发明提供一种偏光片，具有厚度小，抗湿热能力强的特点，可实现显示装置的轻薄化，延长显示装置的使用寿命；以解决现有技术的偏光片，膜厚较大，抗湿热能力较弱的缺陷，不利于实现显示装置的轻薄化，以及延长显示装置使用寿命的技术问题。
 技术解决方案
为解决上述问题，本发明提供的技术方案如下：
本发明提供一种偏光片，贴设在基板表面，用以将透过所述基板的光过滤形成偏振光，所述偏光片包括：
偏光层，其一侧设置有贴合胶，所述偏光层通过所述贴合胶与所述基板相贴合；所述偏光层采用染料偏光膜；
可剥离胶，设置于所述偏光层的相对另一侧，可通过调节贴合环境温度而失效剥离；
保护层，通过所述可剥离胶与所述偏光层相贴合，用以实现对所述偏光层的支撑和保护；
其中，当所述偏光层与所述基板贴合完成后，改变贴合环境温度，使所述保护层随所述可剥离胶去除，以降低所述偏光片厚度。
根据本发明一优选实施例，所述保护层采用聚对苯二甲酸乙二酯膜材。
根据本发明一优选实施例，所述保护层采用三醋酸纤维素酯膜材。
根据本发明一优选实施例，所述保护层远离所述偏光层的一侧设置有支撑层，所述支撑层与所述保护层通过所述粘合胶相贴合。
根据本发明一优选实施例，所述支撑层采用三醋酸纤维素酯膜材。
本发明还提供另一种偏光片，贴设在基板表面，用以将透过所述基板的光过滤形成偏振光，所述偏光片包括：
偏光层，其一侧设置有贴合胶，所述偏光层通过所述贴合胶与所述基板相贴合；
可剥离胶，设置于所述偏光层的相对另一侧，可通过调节贴合环境温度而失效剥离；
保护层，通过所述可剥离胶与所述偏光层相贴合，用以实现对所述偏光层的支撑和保护；
其中，当所述偏光层与所述基板贴合完成后，改变贴合环境温度，使所述保护层随所述可剥离胶去除，以降低所述偏光片厚度。
根据本发明一优选实施例，所述保护层采用聚对苯二甲酸乙二酯膜材。
根据本发明一优选实施例，所述保护层采用三醋酸纤维素酯膜材。
根据本发明一优选实施例，所述保护层远离所述偏光层的一侧设置有支撑层，所述支撑层与所述保护层通过所述粘合胶相贴合。
根据本发明一优选实施例，所述支撑层采用三醋酸纤维素酯膜材。
根据本发明上述目的，提供一种包括上述偏光片的液晶显示面板制备方法，所述方法包括：
S10，提供第一玻璃基板，然后在所述第一玻璃基板上设置下偏光片，最后在所述下偏光片上设置薄膜晶体管阵列，形成阵列基板；
S20，提供第二玻璃基板，然后在所述第二玻璃基板上设置上偏光片，最后在所述上偏光片上设置色阻层，形成彩膜基板；
S30，将所述第一玻璃基板设置所述上偏光片的一侧，与所述第二玻璃基板设置所述下偏光片的一侧相对设置，然后将所述阵列基板与所述彩膜基板成盒；其中，
所述S10具体包括：
S101，将所述下偏光片的偏光层与所述第一玻璃基板对位贴合；
S102，调节贴合环境温度，使得所述下偏光片上的可剥离胶黏度失效；
S103，去除所述保护层和所述可剥离胶，留下所述下偏光层，完成所述下偏光片与所述第一玻璃基板的贴合；
其中所述S20具体包括：
S201，将所述上偏光片的偏光层与所述第二玻璃基板对位贴合；
S202，调节贴合环境温度，使得所述上偏光片上的可剥离胶黏度失效；
S203，去除所述保护层和所述可剥离胶，留下所述上偏光层，完成所述上偏光片与所述第二玻璃基板的贴合。
根据本发明一优选实施例，所述上偏光片的偏光层采用染料偏光膜，所述下偏光片的偏光层同样采用染料偏光膜。
根据本发明一优选实施例，所述下偏光片的保护层采用聚对苯二甲酸乙二酯膜材，所述上偏光片的保护层同样采用聚对苯二甲酸乙二酯膜材。
根据本发明一优选实施例，所述下偏光片的保护层采用三醋酸纤维素酯膜材，所述上偏光片的保护层同样采用三醋酸纤维素酯膜材。
 有益效果
本发明的有益效果为：本发明提供的偏光片，采用具有抗湿热能力强的染料偏光层，并且，节省了多层起保护作用的膜层，进而减小偏光片的厚度，进而减小液晶显示面板的整体厚度，有利于实现显示装置的轻薄化，且具有较强的耐湿和耐高温的能力，进而提升了显示装置的显示品质，且延长了显示装置的使用寿命。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明提供的偏关片一结构示意图；
图2为本发明提供的偏关片再一结构示意图；
图3为本发明提供的偏关片又一结构示意图；
图4为本具有发明偏光片的液晶显示面板制备方法流程图。
图5为图4制备方法制得的液晶显示面板结构示意图。
 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示，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，结构相似的单元是用以相同标号表示。
如图1所示，本发明提供的偏光片，所述偏光层101采用染料偏光膜，染料偏光膜与传统方法制备的使用原料碘作为二向色性的物质的偏光片相比，耐热和耐光性能较佳。
所述偏光层101的一侧设置有贴合胶102，所述偏光层101通过所述贴合胶102与基板相贴合；例如，所述基板硬质的玻璃基板、纤维基板、金属基板等；又如，所述基板为柔性的聚酰亚胺基板。例如，所述贴合胶102采用压敏胶材料。
所述偏光层101的相对另一侧设置有可剥离胶103；所述可剥离胶103为变温剥离胶，可通过调节贴合环境温度而失效剥离；例如，所述可剥离胶103为低温剥离胶，那么将其置于低温环境中一定的时间，即可实现剥离胶失效，同理，当所述可剥离胶103为高温剥离胶时，将其置于高温环境中一定的时间，即可实现剥离胶失效。
保护层104，通过所述可剥离胶103与所述偏光层101相贴合，用以实现对所述偏光层101的支撑和保护；所述保护层104用于保护所述偏光层101表面避免被物理损伤或化学损伤，同时，所述保护层104能够为所述偏光层101增加厚度，进而提高所述偏光层101的韧度，在所述保护层104的支撑下，所述偏光层101在贴覆于所述基板表面的过程中不易出现气泡和褶皱，即使出现少量气泡，也可通过加压加热脱泡解决。优选的，所述保护层104可采用两层或两层以上的层叠保护膜，相层叠的保护膜之间通过贴合胶102贴合，以增强对所述偏光层101的支撑作用，进一步减少气泡和褶皱。
例如，所述偏光片在制备时，所述偏光层101、所述可剥离胶103以及所述保护层104采用一次复合的方法组合，即首先在所述保护层104表面设置所述可剥离胶103，随后，将所述偏光层101贴覆于所述可剥离胶103表面，最后在所述偏光层101表面设置贴合胶102。
又如，所述偏光片在制备时，所述偏光层101、所述可剥离胶103以及所述保护层104采用两次复合的方法组合，第一步，将所述保护层104与所述可剥离胶103复合，在复合过程中，采用调节加压加热等制程，使所述保护层104与所述可剥离胶103黏着良好；第二步，将所述保护层104与所述可剥离胶103的复合层与所述偏光层101复合，在此复合过程中，采用调节加压加热等制程，使所述偏光层101与所述可剥离胶103黏着性低，以便于后期剥离工序时，所述保护层104与所述可剥离胶103的复合层能同时剥离。
如图2所示，本发明提供的偏光片，包括所述偏光层201、所述可剥离胶202以及所述保护层。
所述偏光层201的一侧设置有贴合胶203，所述偏光层201通过所述贴合胶203与所述基板相贴合；所述偏光层201的相对另一侧设置所述可剥离胶202，所述可剥离胶202可通过调节贴合环境温度而失效剥离；所述保护层通过所述可剥离胶202与所述偏光层201相贴合，用以实现对所述偏光层201的支撑和保护。
当所述偏光层201与所述基板贴合完成后，改变贴合环境温度，使所述保护层随所述可剥离胶202去除，以降低所述偏光片厚度。
其中，所述保护层采用聚对苯二甲酸乙二酯膜材204；所述聚对苯二甲酸乙二酯膜材204透水率较低，可避免所述偏光层201在液晶显示面板制程中浸入水汽而影响偏振效果。
如图3所示，本发明提供的偏光片，包括所述偏光层301、所述可剥离胶302以及所述保护层。
所述偏光层301的一侧设置有贴合胶303，所述偏光层301通过所述贴合胶303与所述基板相贴合；所述偏光层301的相对另一侧设置所述可剥离胶302，所述可剥离胶302可通过调节贴合环境温度而失效剥离；所述保护层通过所述可剥离胶302与所述偏光层301相贴合，用以实现对所述偏光层301的支撑和保护。
其中，所述保护层采用三醋酸纤维素酯膜材304；所述三醋酸纤维素酯膜材304具有较佳的韧度，与所述偏光层301复合后，可避免所述偏光层301在贴覆过程中易出现气泡和褶皱。
根据本发明上述目的，提供一种包括上述偏光片的液晶显示面板制备方法，如图4所示，所述方法包括：
S10，提供第一玻璃基板，然后在所述第一玻璃基板上设置下偏光片，最后在所述下偏光片上设置薄膜晶体管阵列，形成阵列基板。
S20，提供第二玻璃基板，然后在所述第二玻璃基板上设置上偏光片，最后在所述上偏光片上设置色阻层，形成彩膜基板。
S30，将所述第一玻璃基板设置所述上偏光片的一侧，与所述第二玻璃基板设置所述下偏光片的一侧相对设置，然后将所述阵列基板与所述彩膜基板成盒。
所述S10具体包括：S101，将所述下偏光片的偏光层与所述第一玻璃基板对位贴合；S102，调节贴合环境温度，使得所述下偏光片上的可剥离胶黏度失效；S103，去除所述保护层和所述可剥离胶，留下所述下偏光层，完成所述下偏光片与所述第一玻璃基板的贴合。
所述S20具体包括：S201，将所述上偏光片的偏光层与所述第二玻璃基板对位贴合；S202，调节贴合环境温度，使得所述上偏光片上的可剥离胶黏度失效；S203，去除所述保护层和所述可剥离胶，留下所述上偏光层，完成所述上偏光片与所述第二玻璃基板的贴合。
如图5所示，根据本发明的液晶显示面板制备方法制得的液晶显示面板，包括相对设置的阵列基板501与彩膜基板502，所述阵列基板501与所述彩膜基板502之间设置有液晶层503。所述彩膜基板502底部设置有背光模组，所述背光膜层包括导光板504及位于所述导光板504入光侧的光源505。
所述阵列基板501包括第一玻璃基板506，所述第一玻璃基板506上设置有下偏光片507，所述下偏光片507上设置有薄膜晶体管阵列508。
所述彩膜基板502包括第二玻璃基板509，所述第二玻璃基板509上设置有上偏光片510，所述上偏光片510上设置有色阻层511。
所述第一玻璃基板506设置所述上偏光片510的一侧，与所述第二玻璃基板509设置所述下偏光片507的一侧相对设置。
将所述上偏光片510与所述下偏光片507均内置于所述液晶显示面板，当环境中温度较高时，所述偏光片没有支持膜，不会因为支撑膜受热而翘曲，同时染料偏振子比传统碘系偏振子更耐高温，不容易因高温而失效。另外，我们将偏光膜的断面保护在框胶内，可防止偏光膜受潮吸水影响偏振效果。
本发明的有益效果为：本发明提供的偏光片，采用具有抗湿热能力强的染料偏光层，并且，节省了多层起保护作用的膜层，进而减小偏光片的厚度，进而减小液晶显示面板的整体厚度，有利于实现显示装置的轻薄化，且具有较强的耐湿和耐高温的能力，进而提升了显示装置的显示品质，且延长了显示装置的使用寿命。
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 (14)

  1. 一种偏光片，贴设在基板表面，用以将透过所述基板的光过滤形成偏振光，其中，所述偏光片包括：
    偏光层，其一侧设置有贴合胶，所述偏光层通过所述贴合胶与所述基板相贴合；所述偏光层采用染料偏光膜；
    可剥离胶，设置于所述偏光层的相对另一侧，可通过调节贴合环境温度而失效剥离；
    保护层，通过所述可剥离胶与所述偏光层相贴合，用以实现对所述偏光层的支撑和保护；
    其中，当所述偏光层与所述基板贴合完成后，改变贴合环境温度，使所述保护层随所述可剥离胶去除，以降低所述偏光片厚度。
  2. 根据权利要求1所述的偏光片，其中，所述保护层采用聚对苯二甲酸乙二酯膜材。
  3. 根据权利要求1所述的偏光片，其中，所述保护层采用三醋酸纤维素酯膜材。
  4. 根据权利要求2或3所述的偏光片，其中，所述保护层远离所述偏光层的一侧设置有支撑层，所述支撑层与所述保护层通过所述粘合胶相贴合。
  5. 根据权利要求4所述的偏光片，其中，所述支撑层采用三醋酸纤维素酯膜材。
  6. 一种偏光片，贴设在基板表面，用以将透过所述基板的光过滤形成偏振光，其中，所述偏光片包括：
    偏光层，其一侧设置有贴合胶，所述偏光层通过所述贴合胶与所述基板相贴合；
    可剥离胶，设置于所述偏光层的相对另一侧，可通过调节贴合环境温度而失效剥离；
    保护层，通过所述可剥离胶与所述偏光层相贴合，用以实现对所述偏光层的支撑和保护；
    其中，当所述偏光层与所述基板贴合完成后，改变贴合环境温度，使所述保护层随所述可剥离胶去除，以降低所述偏光片厚度。
  7. 根据权利要求6所述的偏光片，其中，所述保护层采用聚对苯二甲酸乙二酯膜材。
  8. 根据权利要求6所述的偏光片，其中，所述保护层采用三醋酸纤维素酯膜材。
  9. 根据权利要求7或8所述的偏光片，其中，所述保护层远离所述偏光层的一侧设置有支撑层，所述支撑层与所述保护层通过所述粘合胶相贴合。
  10. 根据权利要求9所述的偏光片，其中，所述支撑层采用三醋酸纤维素酯膜材。
  11. 一种包括如权利要求6所述偏光片的液晶显示面板制备方法，其中，所述方法包括：
    S10，提供第一玻璃基板，然后在所述第一玻璃基板上设置下偏光片，最后在所述下偏光片上设置薄膜晶体管阵列，形成阵列基板；
    S20，提供第二玻璃基板，然后在所述第二玻璃基板上设置上偏光片，最后在所述上偏光片上设置色阻层，形成彩膜基板；
    S30，将所述第一玻璃基板设置所述上偏光片的一侧，与所述第二玻璃基板设置所述下偏光片的一侧相对设置，然后将所述阵列基板与所述彩膜基板成盒；其中，
    所述S10具体包括：
    S101，将所述下偏光片的偏光层与所述第一玻璃基板对位贴合；
    S102，调节贴合环境温度，使得所述下偏光片上的可剥离胶黏度失效；
    S103，去除所述保护层和所述可剥离胶，留下所述下偏光层，完成所述下偏光片与所述第一玻璃基板的贴合；
    其中所述S20具体包括：
    S201，将所述上偏光片的偏光层与所述第二玻璃基板对位贴合；
    S202，调节贴合环境温度，使得所述上偏光片上的可剥离胶黏度失效；
    S203，去除所述保护层和所述可剥离胶，留下所述上偏光层，完成所述上偏光片与所述第二玻璃基板的贴合。
  12. 根据权利要求11所述的方法，其中，所述上偏光片的偏光层采用染料偏光膜，所述下偏光片的偏光层同样采用染料偏光膜。
  13. 根据权利要求12所述的方法，其中，所述下偏光片的保护层采用聚对苯二甲酸乙二酯膜材，所述上偏光片的保护层同样采用聚对苯二甲酸乙二酯膜材。
  14. 根据权利要求12所述的方法，其中，所述下偏光片的保护层采用三醋酸纤维素酯膜材，所述上偏光片的保护层同样采用三醋酸纤维素酯膜材。
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CN105093661A (zh) * 2015-09-09 2015-11-25 深圳市华星光电技术有限公司 一种偏光片
CN107167859A (zh) * 2016-12-21 2017-09-15 住华科技股份有限公司 偏光板组件以及显示设备
CN107436503A (zh) * 2017-09-04 2017-12-05 深圳市华星光电技术有限公司 液晶显示组件

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