WO2016065794A1 - 棱镜膜、棱镜膜制作方法及液晶显示装置 - Google Patents

棱镜膜、棱镜膜制作方法及液晶显示装置 Download PDF

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Publication number
WO2016065794A1
WO2016065794A1 PCT/CN2015/074271 CN2015074271W WO2016065794A1 WO 2016065794 A1 WO2016065794 A1 WO 2016065794A1 CN 2015074271 W CN2015074271 W CN 2015074271W WO 2016065794 A1 WO2016065794 A1 WO 2016065794A1
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Prior art keywords
prism film
liquid crystal
prism
polarizing layer
layer
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PCT/CN2015/074271
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English (en)
French (fr)
Inventor
邢红燕
尹岩岩
崔子巍
薛静
吴昊
陈雅娟
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京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to US14/778,057 priority Critical patent/US20160306081A1/en
Publication of WO2016065794A1 publication Critical patent/WO2016065794A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • 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
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a prism film, a prism film manufacturing method, and a liquid crystal display device.
  • liquid crystal displays have become the mainstream products of computer monitors and high-end TV monitors.
  • small-sized displays such as mobile phones, PADs (tablets), digital photo frames, etc.
  • liquid crystal displays are dominant.
  • FIG. 1 is a cross-sectional view showing a basic optical structure of a conventional liquid crystal display, comprising: a liquid crystal cell 1 (LCD panel) in which polarizers 8 are placed on upper and lower sides of a liquid crystal cell 1; a protective film 2; a prism film 3; and a diffusion film 4. a light guide plate 5; a reflective film 6; and a lamp tube 7.
  • the present invention provides a prism film, a prism film manufacturing method, and a liquid crystal display device.
  • An object of the present invention is to provide a prism film, a prism film manufacturing method, and a liquid crystal display device, which are capable of solving the problem of poor adhesion of a polarizer existing in the prior art liquid crystal panel manufacturing technology due to application to a liquid crystal cell. The problem of scratching.
  • an aspect of the present invention provides a prism film for use in a liquid crystal display device, comprising a prism film substrate and a polarizing layer, wherein an upper surface of the prism film substrate is a prism surface, and a lower surface is a bonding surface.
  • the polarizing layer is formed on the bonding surface of the prism film substrate.
  • the prism film substrate comprises a plurality of substrate layers having a rib structure.
  • the material of the substrate layer is polyethylene terephthalate.
  • the prism film further includes a protective layer on a surface of the polarizing layer opposite to the bonding surface.
  • the material of the polarizing layer is polyvinyl alcohol.
  • the protective layer is made of cellulose triacetate.
  • Another aspect of the invention provides a method of fabricating a prism film, comprising the steps of:
  • a liquid crystal display device includes a liquid crystal cell and a backlight module matched with the liquid crystal cell, and the backlight module includes the prism film described above.
  • the prism film is located between the liquid crystal cell and the diffusion film.
  • a panel protective film disposed between the prism film and the liquid crystal cell.
  • the above technical solution of the present invention has the following advantages: in the prism film, the prism film manufacturing method and the liquid crystal display device provided by the present invention, a polarizing layer is formed on the lower surface of the prism film substrate, and the function of collecting the light of the prism film and the formation of the polarizer are ensured. Under the premise of polarized light, the problem of poor adhesion of the polarizer applied to the liquid crystal cell in the existing liquid crystal panel manufacturing technology can be avoided, and the polarizer which is assembled in the liquid crystal panel in other processes can be prevented from being scratched. problem.
  • FIG. 1 is a schematic view showing a basic optical structure of a conventional liquid crystal display
  • FIG. 2 is a schematic view showing the structure of a prism film used in a liquid crystal display device according to an embodiment of the present invention.
  • 1 liquid crystal cell
  • 2 panel protective film
  • 3 prism film
  • 4 diffusing film
  • 5 light guide plate
  • 6 reflective film
  • 7 lamp tube
  • 8 polarizer
  • 9 prism film substrate
  • 10 polarizing layer
  • 11 protective layer
  • 901 prism surface.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the prism film used in the liquid crystal display device of the present invention comprises a prism film substrate 9 and a polarizing layer 10, the upper surface of the prism film substrate 9 is a prism surface 901, and the lower surface is a bonding surface, and the polarizing is performed.
  • the layer 10 is coated on the bonding surface; in order to protect the polarizing layer 10, the prism film further includes a protective layer 11 on the surface of the polarizing layer 10 opposite to the bonding surface; A protective layer 11 may be formed on the lower surface of the polarizing layer 10.
  • the polarizing layer 10 is coated on the lower surface of the prism film substrate 9 to ensure the prism.
  • the problem of poor adhesion of the polarizer to the liquid crystal cell 1 can be avoided, for example, bubbles, stains and foreign matter are easily generated in the polarizer.
  • the problem can also avoid the problem that the polarizer which is formed in the liquid crystal panel is scratched in other processes.
  • the prism film substrate comprises a plurality of base material layers having a rib structure; the base material layer is made of polyethylene terephthalate. Since each of the substrate layers has a prismatic structure, there is a gap between the edges of the adjacent substrate layers; when the prism film is heated, the amount of expansion of the substrate layer is mainly filled first between the edges; when the gap is filled Only the whole of the prism film substrate is expanded, thereby reducing the overall expansion amount of the prism film after being heated, and solving the problem that the prism film is uneven when heated.
  • the material of the polarizing layer 10 is polyvinyl alcohol (PVA); the material of the protective layer 11 is cellulose triacetate (TAC).
  • PVA polyvinyl alcohol
  • TAC cellulose triacetate
  • the polarizing layer 10 can also be used with other
  • the protective layer 11 may also be selected from other suitable protective materials.
  • a prism film manufacturing method provided by another aspect of the present invention includes the following steps:
  • a polarizing layer 10 is formed on the lower surface of the prism film substrate 9, and specifically, a polyvinyl alcohol material is applied as a polarizing layer 10 on the lower surface of the prism film substrate 9.
  • the prism film manufacturing method may further include:
  • a protective layer 11 is formed on the lower surface of the polarizing layer 10, specifically, a layer of triacetylcellulose material is applied as a protective layer 11 on the lower surface of the polarizing layer 10.
  • the liquid crystal display device comprises a liquid crystal cell and a backlight module matched with the liquid crystal cell, the backlight module comprising the prism film described above;
  • the backlight module further includes a diffusion film; the prism film is located between the liquid crystal cell and the diffusion film.
  • a panel protective film is further provided, and the panel protective film is disposed between the prism film and the liquid crystal cell to prevent a bad result of direct contact between the prism film and the liquid crystal cell.
  • the liquid crystal display device of the prism film of the embodiment of the present invention since the problem of poor adhesion of the polarizer and the problem of being scratched does not occur, the yield of the product is greatly improved; and when the polarizing layer 10 of the prism film appears When the problem is solved, the prism film can be directly replaced, which reduces the daily maintenance of the polarizer.
  • the polarizing layer 10 is formed on the lower surface of the prism film substrate 9, and the polarizing film is ensured by the prism film and the polarizing film is polarized.
  • the problem of poor adhesion of the polarizer applied to the liquid crystal cell can be avoided, and the problem that the polarizer which is formed by assembling the liquid crystal panel in other processes is scratched can be avoided; by the polarizing layer 10 of the prism film
  • the lower surface is coated with a protective layer 11 to insulate moisture and air, and the polarizing layer 10 can be protected from loss of polarization due to easy absorption and fading of the polarizing layer 10; when a problem occurs in the polarizing layer 10 of the prism film, the prism is directly replaced.
  • the film can be used to reduce the daily maintenance of the polarizer.

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

Abstract

一种棱镜膜、棱镜膜制作方法及液晶显示装置。该棱镜膜包括棱镜膜基体（9）和偏光层（10），棱镜膜基体（9）的上表面为棱镜面（901），下表面为结合面，所述偏光层（10）形成于棱镜膜基体（9）的结合面上，从而可避免现有液晶面板制造技术中偏光片（8）贴敷在液晶盒（1）上易出现的贴敷不良问题，同时也可避免其他工序中组装液晶面板出现的偏光片（8）被划伤的问题。

Description

棱镜膜、棱镜膜制作方法及液晶显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种棱镜膜、棱镜膜制作方法及液晶显示装置。
背景技术
目前，液晶显示器已经成为计算机显示器和高端电视显示器的主流产品，而在小尺寸显示器领域中，比如手机、PAD(平板电脑)、数码相框等，液晶显示器更是占统治性的地位。
现有的液晶显示器需要背光模组提供光源。图1为现有的液晶显示器基本光学结构剖面图，其包括：液晶盒1(LCD面板)，其中偏光片8置于液晶盒1的上下两侧；保护膜2；棱镜膜3；扩散膜4；导光板5；反射膜6；以及灯管7。
然而，现有的液晶面板的制造技术中，在将偏光片贴敷在液晶盒的上、下表面时，偏光片中易产生气泡、污渍和粘结异物等贴敷不良问题；并且，在进行其它工序时，偏光片易被划伤，进而导致不合格液晶显示装置的产生。
因此，针对以上不足，本发明提供了一种棱镜膜、棱镜膜制作方法及液晶显示装置。
发明内容
(一)要解决的技术问题
本发明的目的是提供一种棱镜膜、棱镜膜制作方法及液晶显示装置，以解决现有液晶面板制造技术中存在的偏光片因贴敷于液晶盒上而产生的贴敷不良问题和易被划伤的问题。
(二)技术方案
为了解决上述技术问题，本发明一方面提供了一种用于液晶显示装置中的棱镜膜，其包括棱镜膜基体和偏光层，棱镜膜基体的上表面为棱镜面，下表面为结合面，所述偏光层形成于棱镜膜基体的结合面上。
优选地，所述棱镜膜基体包括多层具有棱结构的基材层。
优选地，所述基材层的材质为聚对二苯甲酸乙二醇酯。
优选地，所述棱镜膜还包括保护层，所述保护层位于偏光层的与所述结合面相对的表面上。
优选地，所述偏光层的材质为聚乙烯醇。
优选地，所述保护层的材质为三醋酸纤维素。
本发明另一方面提供了一种棱镜膜制作方法，其包括以下步骤：
S1、在棱镜膜基体的下表面形成偏光层；
S2、在偏光层的下表面形成保护层。
本发明再一方面提供了一种液晶显示装置，其包括液晶盒和与液晶盒相配合的背光模组，所述背光模组包括上述的棱镜膜。
其中，所述棱镜膜位于液晶盒和扩散膜之间。
其中，还包括面板保护膜，所述面板保护膜设置在所述棱镜膜与所述液晶盒之间。
(三)有益效果
本发明的上述技术方案具有如下优点：本发明提供的棱镜膜、棱镜膜制作方法及液晶显示装置中，在棱镜膜基体的下表面形成偏光层，在保证棱镜膜汇聚光线的作用和偏光片形成偏振光作用的前提下，可避免现有液晶面板制造技术中偏光片贴敷在液晶盒上易出现的贴敷不良问题，同时也可避免其他工序中组装液晶面板出现的偏光片被划伤的问题。
附图说明
图1是现有的液晶显示器基本光学结构示意图；
图2是本发明实施例用于液晶显示装置中的棱镜膜的结构示意图。
图中，1：液晶盒；2：面板保护膜；3：棱镜膜；4：扩散膜；5：导光板；6：反射膜；7：灯管；8：偏光片；9：棱镜膜基体；10：偏光层；11：保护层；901：棱镜面。
具体实施方式
下面结合附图和实施例对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
如图2所示，本发明提供的用于液晶显示装置中的棱镜膜包括棱镜膜基体9和偏光层10，棱镜膜基体9的上表面为棱镜面901，下表面为结合面，所述偏光层10涂敷形成于结合面上；为了对偏光层10起到一定的保护作用，棱镜膜还包括保护层11，所述保护层11位于偏光层10的与所述结合面相对的表面上；可以在偏光层10的下表面涂敷形成保护层11。
在液晶显示装置中，采用上述技术方案，取代现有的将偏光片贴敷于液晶盒1上、下表面的方式，而在棱镜膜基体9的下表面涂敷形成偏光层10，在保证棱镜膜汇聚光线的作用和偏光片形成偏振光作用的前提下，可避免偏光片贴敷在液晶盒1上易出现的贴敷不良问题，例如，偏光片中易产生气泡、污渍和粘结异物的问题，同时也可避免其他工序中组装液晶面板出现的偏光片被划伤的问题。
优选地，所述棱镜膜基体包括多层具有棱结构的基材层；该基材层的材质为聚对二苯甲酸乙二醇酯。由于每个基材层都具有棱结构，相邻基材层的棱之间存在空隙；棱镜膜受热时，基材层的膨胀量主要先对棱之间的空隙进行填充；当空隙填充满后，才会对棱镜膜基体的整体产生膨胀，从而减小了棱镜膜受热后整体的膨胀量，解决棱镜膜在受热时不平整的问题。
优选地，所述偏光层10的材质为聚乙烯醇(PVA)；所述保护层11的材质为三醋酸纤维素(TAC)。当然，偏光层10也可选用其他具有 相同功能的材料，保护层11也可选用其他适宜的具有保护功能的材料。
本发明另一方面还提供的棱镜膜制作方法包括以下步骤：
S 1、在棱镜膜基体9的下表面形成偏光层10，具体为在棱镜膜基体9的下表面涂敷一层聚乙烯醇材料作为偏光层10。
优选地，所述棱镜膜制作方法还可以包括：
S2、在偏光层10的下表面形成保护层11，具体为在偏光层10的下表面涂敷一层三醋酸纤维素材料作为保护层11。
另外，本发明提供的液晶显示装置包括液晶盒和与液晶盒相配合的背光模组，所述背光模组包括上述的棱镜膜；
优选地，所述背光模组还包括扩散膜；该棱镜膜位于液晶盒和扩散膜之间。
优选地，还包括面板保护膜，所述面板保护膜设置在所述棱镜膜与所述液晶盒之间，防止棱镜膜与液晶盒直接接触发生的不良结果。
采用本发明实施例的棱镜膜的液晶显示装置，由于不会出现偏光片贴敷不良的问题和被划伤的问题，因而产品合格率得到极大提升；并且，当棱镜膜的偏光层10出现问题时，直接更换棱镜膜即可，减少了偏光片的日常维护。
综上所述，本发明提供的棱镜膜、棱镜膜制作方法及液晶显示装置中，在棱镜膜基体9的下表面形成偏光层10，在保证棱镜膜汇聚光线的作用和偏光片形成偏振光作用的前提下，可避免偏光片贴敷在液晶盒上易出现的贴敷不良问题，同时也可避免其他工序中组装液晶面板出现的偏光片被划伤的问题；通过在棱镜膜偏光层10的下表面涂敷形成保护层11以隔绝水分和空气，可对偏光层10形成保护，避免因偏光层10易吸水、褪色而丧失偏光性能；当棱镜膜的偏光层10出现问题时，直接更换棱镜膜即可，减少了偏光片的日常维护。
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来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。

Claims (13)

  1. 一种棱镜膜，其特征在于：其包括棱镜膜基体和偏光层，棱镜膜基体的上表面为棱镜面，下表面为结合面，所述偏光层形成于棱镜膜基体的结合面上。
  2. 根据权利要求1所述的棱镜膜，其特征在于：所述棱镜膜基体包括多层具有棱结构的基材层。
  3. 根据权利要求2所述的棱镜膜，其特征在于：所述基材层的材质为聚对二苯甲酸乙二醇酯。
  4. 根据权利要求1所述的棱镜膜，其特征在于：所述棱镜膜还包括保护层，所述保护层位于偏光层的与所述结合面相对的表面上。
  5. 根据权利要求1所述的棱镜膜，其特征在于：所述偏光层的材质为聚乙烯醇。
  6. 根据权利要求4所述的棱镜膜，其特征在于：所述保护层的材质为三醋酸纤维素。
  7. 一种棱镜膜制作方法，其特征在于，其包括以下步骤：
    S1、在棱镜膜基体的下表面形成偏光层；其中棱镜膜基体的上表面为棱镜面。
  8. 根据权利要求7所述的棱镜膜制作方法，其特征在于，在偏光层的下表面形成保护层包括：在棱镜膜基体的下表面涂敷一层聚乙烯醇材料作为偏光层。
  9. 根据权利要求7或8所述的棱镜膜制作方法，其特征在于，还包括步骤：
    S2、在偏光层的下表面形成保护层。
  10. 根据权利要求9所述的棱镜膜制作方法，其特征在于，在偏光层的下表面形成保护层包括：在偏光层的下表面涂敷一层三醋酸纤维素材料作为保护层。
  11. 一种液晶显示装置，其特征在于：其包括液晶盒和与液晶盒相配合的背光模组，所述背光模组包括权利要求1-6任一项所述的棱镜膜。
  12. 根据权利要求11所述的液晶显示装置，其特征在于：所述背光模组还包括扩散膜；所述棱镜膜位于液晶盒和扩散膜之间。
  13. 根据权利要求12所述的液晶显示装置，其特征在于：还包括面板保护膜，所述面板保护膜设置在所述棱镜膜与所述液晶盒之间。
PCT/CN2015/074271 2014-10-27 2015-03-16 棱镜膜、棱镜膜制作方法及液晶显示装置 WO2016065794A1 (zh)

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