WO2015021793A1 - 半透半反式液晶面板及显示装置 - Google Patents

半透半反式液晶面板及显示装置 Download PDF

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Publication number
WO2015021793A1
WO2015021793A1 PCT/CN2014/076435 CN2014076435W WO2015021793A1 WO 2015021793 A1 WO2015021793 A1 WO 2015021793A1 CN 2014076435 W CN2014076435 W CN 2014076435W WO 2015021793 A1 WO2015021793 A1 WO 2015021793A1
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liquid crystal
crystal panel
layer
polarizing film
film layer
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French (fr)
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鹿岛美纪
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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    • 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
    • G02F1/133536—Reflective polarizers
    • 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
    • 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
    • G02F1/133553—Reflecting elements
    • G02F1/133555—Transflectors
    • 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
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • 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
    • G02F1/133538—Polarisers with spatial distribution of the polarisation direction
    • 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
    • G02F1/133548—Wire-grid polarisers

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a transflective liquid crystal panel and a display device. Background technique
  • a typical transmi ssive display can reduce the contrast of an image due to ambient light when it is outdoors or under strong light.
  • reflective In contrast, reflective
  • the (reflective) display relies on external light sources to achieve the display effect, so it will display better display and contrast under outdoor or strong light, and reduce the large amount of power consumed when using the backlight, so it is very suitable for portable On electronic products.
  • the ambient light source is insufficiently bright, the contrast and brightness of the reflective display are greatly affected, so if a transflective display with a secondary backlight is used to make a transflective display, It has the advantages of both a transmissive display and a reflective display.
  • a transmissive region and a reflective region having a reflective layer are simultaneously provided in one pixel region.
  • the liquid crystal matrix can be generally classified into active and passive liquid crystal matrices. The direction in which the liquid crystal molecules are aligned is controlled by changing the voltage of the passive element, which is called a passive drive, and a passive liquid crystal matrix is utilized. The voltage is changed by the active component, which is called active drive.
  • a passive component commonly used to drive a liquid crystal is, for example, a capacitor, and an active component is, for example, a transistor. Therefore, the transflective liquid crystal display is not only suitable for passive driving, but also for utilizing amorphous silicon (a-Si) thin film transistor (Thin Film Transistor, hereinafter referred to as TFT) or low temperature polysilicon.
  • a-Si amorphous silicon
  • TFT Thin Film Transistor
  • the transflective liquid crystal display does not require a long-time use of the backlight, thereby having the advantage of reducing power consumption.
  • the Advanced Super Dimension Switch (ADS) type liquid crystal display has been widely used due to its wide viewing angle, high transmittance, and low chromatic aberration.
  • the ADS type liquid crystal display forms an electric field generated by the edge of the slit electrode in the same plane and an electric field generated between the slit electrode layer and the plate electrode layer, thereby forming a multi-dimensional electric field between the slit electrodes in the liquid crystal cell and directly above the electrode. All oriented liquid crystal molecules are capable of rotating, thereby improving liquid crystal working efficiency and increasing light transmission efficiency.
  • the TFT array substrate in the ADS type liquid crystal panel generally includes: a substrate, and a plurality of pixel units distributed in an array on the substrate.
  • Each of the pixel units includes: a TFT electrically connected to the gate line and the data line on the substrate, respectively, and a pixel electrode electrically connected to the source of the TFT through the via.
  • the pixel electrode is a slit electrode having a certain inclination angle.
  • the TFT array substrate further includes a common electrode that forms an electric field with the pixel electrode, and the degree of deflection of the liquid crystal molecules is controlled by a change in electric field intensity formed between the pixel electrode and the common electrode.
  • ADS type liquid crystal displays have the advantages of high contrast, wide viewing angle, high definition and the like. Therefore, it is very important to develop a transflective ADS type liquid crystal display.
  • Fig. 1 shows a prior art transflective ADS type liquid crystal display.
  • the liquid crystal panel of the display includes an upper polarizing layer 1, an upper substrate 2, a lower substrate 4, a lower polarizing layer 5, and a liquid crystal layer 3 disposed between the upper substrate 2 and the lower substrate 4.
  • Each of the pixel units of the liquid crystal panel can be divided into a transmissive area T and a reflective area R.
  • the display modes of the transmissive area T and the reflective area R are different (that is, the transmissive area T is a normally black display mode, and the reflective area R is a normally white display mode), an ADS is required.
  • the liquid crystal display adopts an in-cel retarder or a multi-domain structure, and the process is complicated and difficult.
  • static electricity generated on the upper substrate may cause an electric field defect in the inner region of the transflective ADS type liquid crystal display due to friction, touching the upper substrate, etc., resulting in poor liquid crystal alignment.
  • An object of the present invention is to provide a transflective liquid crystal panel and a display device,
  • the transflective liquid crystal panel prevents internal defects caused by externally generated static electricity, and the processing process for the transflective liquid crystal panel is simple and quick.
  • each of the pixel units of the transflective liquid crystal panel includes a transmissive area and a reflective area, and the transflective liquid crystal panel further includes a conductive polarizing film layer.
  • the conductive polarizing film layer has a first polarization direction on the reflective region, and the conductive polarizing film layer has a second polarization direction on the transmission region.
  • the liquid crystal layer disposed in the transmissive region is a transmissive liquid crystal layer
  • the liquid crystal layer disposed in the reflective region is a reflective region liquid crystal layer, wherein a thickness of the reflective region liquid crystal layer is a thickness of the transmissive region liquid crystal layer half.
  • the first polarizing direction of the conductive polarizing film layer on the reflective region is 45 degrees
  • the second polarizing direction of the conductive polarizing film layer on the transmissive region is 90 degrees
  • the conductive polarizing film layer may be disposed on one side of the display side substrate of the transflective liquid crystal panel, the one side of the display side substrate and the non-display side of the transflective liquid crystal panel The substrates are opposite each other.
  • the transflective liquid crystal panel may be an advanced super-dimensional field conversion (ADS) type liquid crystal panel.
  • ADS advanced super-dimensional field conversion
  • the present invention also provides a liquid crystal display device comprising a transflective liquid crystal panel according to the present invention.
  • the present invention has the following advantages:
  • the present invention can prevent the misalignment of liquid crystal molecules in the liquid crystal panel due to static electricity generated outside the liquid crystal panel by forming a conductive polarizing film layer on the upper surface of the upper substrate;
  • the conductive polarizing film layer provided by the present invention is formed on the outer side of the upper substrate, the use of the in-box retarder process for the ADS type transflective liquid crystal panel is avoided.
  • the processing technology is simple and fast.
  • the conductive polarizing film layer can adopt a single-layer film structure, the processing process of the upper polarizer (or the upper polarizing layer) is omitted, the processing efficiency is improved, and the processing cost is reduced.
  • FIG. 1 is a schematic view of a transflective ADS type liquid crystal panel according to the prior art
  • FIG. 2 is a schematic view of a transflective ADS type liquid crystal panel according to an embodiment of the present invention.
  • the present embodiment provides an ADS type transflective liquid crystal panel comprising a conductive polarizing film layer la disposed on the upper surface of the upper substrate 2 as an upper polarizing film layer of the liquid crystal panel.
  • the liquid crystal panel further includes a lower substrate 4 and a uniformly oriented liquid crystal layer 3 disposed between the upper substrate 1 and the lower substrate 4.
  • a lower polarizing layer 5 is provided on the lower surface of the lower substrate 4.
  • a color filter (not shown) may be formed over the upper substrate 2, and a thin film transistor (not shown) may be formed under the lower substrate 4.
  • Each of the pixel units of the transflective liquid crystal panel may include a transmissive area T and a reflective area R.
  • the liquid crystal layer 3 disposed in the transmissive region T is a transmissive region liquid crystal layer 321
  • the liquid crystal layer 3 disposed in the reflective region R is a reflective region liquid crystal layer 311.
  • a reflective layer 312 and a resin layer 313 are sequentially disposed between the liquid crystal layer 311 and the lower substrate 4 of the reflective region.
  • the conductive polarizing film layer 1a may be disposed on the upper surface of the upper substrate 2, that is, the display side substrate (upper substrate 2) of the transflective liquid crystal panel and the non-display side substrate of the transflective liquid crystal panel ( Lower substrate 4) opposite side.
  • the conductive polarizing film layer 1a has a first polarization direction on the reflection region R, and the conductive polarizing film layer 1a has a second polarization direction on the transmission region T.
  • the conductivity can be applied to the upper substrate 2 by printing Polarized film layer la.
  • the conductive polarizing film layer 1a is provided on the upper substrate 2, static electricity generated on the upper substrate 2 can be guided to the outside of the upper substrate 2 through the conductive polarizing film layer 1a without causing the liquid crystal layer 3
  • the orientation of the internal liquid crystal molecules is poor.
  • the conductive polarizing film layer provided by the embodiment can be applied to liquid crystal panels of various display modes, such as a twisted nematic (TN) mode panel, an In-Plane Switching (IPS) mode panel, etc. .
  • TN twisted nematic
  • IPS In-Plane Switching
  • the liquid crystal layer 3 includes a reflective region liquid crystal layer 311 and a transmissive region liquid crystal layer 321 .
  • the thickness of the reflective region liquid crystal layer 312 may be half the thickness of the transmissive liquid crystal layer 311.
  • the thickness of the reflective region liquid crystal layer 311 can be controlled by the thickness of the resin layer 313.
  • the reflective region liquid crystal layer 311 included in the liquid crystal layer 3 may have a thickness of about 2. 1 ⁇ m
  • the transmissive region liquid crystal layer 321 may have a thickness of about 4.2 ⁇ m. It should be noted that the thickness of the liquid crystal layer 311 and the liquid crystal layer 321 of the transmissive region are not limited as long as the transflective liquid crystal panel of the normally white mode can be realized.
  • the conductive polarizing film layer may have a layered superposed structure which is a layered structure including a combination of a conductive film layer and a polarizing film layer, but this structure makes the processing process cumbersome.
  • a conductive polarizing film layer having a single-layer film structure can be used, thereby eliminating the processing process of the upper polarizer (or the upper polarizing layer), improving the processing efficiency and reducing the processing cost.
  • a conductive transparent layer can be used to process the conductive polarizing layer, and the reference is made to JP 2009-230130, the entire contents of which is incorporated herein by reference.
  • the conductive polarizing film layer 1a may include a portion 11 disposed on the reflective region R and a portion 12 disposed on the transmissive region T (hereinafter referred to as a polarizing film layer reflecting portion 11 and a polarizing film layer transmitting portion 12, respectively).
  • the polarizing film layer reflecting portion 11 is disposed above the reflective region liquid crystal layer 311, and the first polarizing direction of the polarizing film layer reflecting portion 11 corresponds to the polarizing direction of the reflective region liquid crystal layer 311.
  • the polarizing film layer transmitting portion 12 is disposed above the transmissive region liquid crystal layer 321, and the second polarizing direction of the polarizing film layer transmitting portion 12 corresponds to the polarizing direction of the transmissive region liquid crystal layer 321.
  • a first polarizing direction of the polarizing film layer reflecting portion 11 corresponding to the reflective region liquid crystal layer 311 and a polarizing film layer corresponding to the transmissive region liquid crystal layer 321 The second polarization direction of the transmissive portion 12 may be different.
  • the first polarizing direction of the polarizing film layer reflecting portion 11 may be 45 degrees, and the second polarizing direction of the polarizing film layer transmitting portion 12 may be 90 degrees, so that the reflective region R and the transmissive region T are both normally white mode.
  • ADS type transflective liquid crystal panel may be 45 degrees, and the second polarizing direction of the polarizing film layer transmitting portion 12 may be 90 degrees, so that the reflective region R and the transmissive region T are both normally white mode.
  • first and second polarizing elements are not limited as long as the transflective liquid crystal panel of the normally white mode can be realized.
  • the liquid liquid may be applied by coating the PI liquid on the upper substrate 2 and the lower substrate 4 of the ADS type transflective liquid crystal panel provided according to the present embodiment, and rubbing to prepare a liquid crystal alignment layer.
  • the rubbing direction of the upper substrate 2 may be 45 degrees, and the rubbing direction of the lower substrate 4 may be 225 degrees.
  • the lower polarizing layer 5 may be disposed under the lower substrate 4, and the polarizing direction of the lower polarizing layer 5 may be 0 degree.
  • liquid crystal panel according to the present embodiment can be applied to various liquid crystal display devices and electronic devices including liquid crystal display devices, for example, liquid crystal displays, 0 LED displays, mobile phones, tablets, televisions, notebook computers, digital photo frames, navigators, and any A product or part that has a display function.
  • liquid crystal display devices for example, liquid crystal displays, 0 LED displays, mobile phones, tablets, televisions, notebook computers, digital photo frames, navigators, and any A product or part that has a display function.

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

Abstract

一种半透半反液晶面板及包括该液晶显示面板的液晶显示装置，该半透半反液晶面板的每个像素单元可以包括透射区域（T）和反射区域（R），该半透半反液晶面板还包括导电性偏光膜层（1a），导电性偏光膜层（1a）在反射区域（R）为第一偏光方向，导电性偏光膜层（1a）在透射区域（T）为第二偏光方向。通过在上基板（2）上表面形成导电性偏光膜层（1a），能够防止液晶面板外部产生的静电对液晶面板内液晶分子的排列不良；导电性偏光膜层（1a）形成在上基板（2）外侧，加工简单快捷；导电性偏光膜层（1a）采用一层薄膜结构，提高了加工效率，节省了加工成本。

Description

半透半反式液晶面板及显示装置 技术领域
本发明涉及液晶显示领域， 特别涉及一种半透半反式液晶面板 及显示装置。 背景技术
一般的透射式 （transmi ssive ) 显示器在室外或强光下， 会由 于环境光的影响而使得影像的对比度降低。 与之相比， 反射式
( reflective )显示器依赖于外来光源来达到显示效果， 因此在户外 或强光下反而会呈现出更佳的显示效果和对比度，并且可减少使用背 光时消耗的大量功率，所以非常适合用在可携带式电子产品上。然而， 当环境光源亮度不足时，反射式显示器的对比度与亮度会受到很大影 响，因此如果能配合具有辅助背光源的透射式技术来制作一种半透半 反式 （transflective ) 显示器， 则其可同时具有透射式显示器与反 射式显示器的优点。
对于半透半反式液晶显示器而言， 在一个像素区域内同时设有 透射区和具有反射层的反射区。在光线较暗的地方可以利用背光源并 且通过像素区域的透射区来显示影像；在光线较明亮的地方可以利用 环境光 （而不使用背光源） 并且通过像素区域的反射区来显示影像。 液晶矩阵 （l iqui d crystal matrix ) 一般可分为主动式和被动式液 晶矩阵。通过被动元件改变电压来控制液晶分子的排列方向，称为被 动式驱动 （passive drive ) ， 并利用被动式液晶矩阵。 而通过主动 元件改变电压， 则称为主动式驱动 （active drive ) 。 常见用于驱动 液晶的被动元件例如为电容， 主动元件例如为晶体管。 因此， 半透半 反式液晶显示器不但适用于被动式驱动，也适用于利用非晶硅（a-Si ) 薄膜晶体管 （Thin Fi lm Transi stor, 以下简称 TFT) 或低温多晶硅
( Low Temperature Polysi l icon, LTPS ) TFT等的主动式驱动技术。 半透半反式液晶显示器不需要长时间使用背光源，从而具有可以降低 功耗的优点。 目前， 高级超维场转换 ( Advanced super Dimension Switch, 以下简称 ADS )型液晶显示器因具备广视角、 高透射率、 低色差等优 点而得到广泛的应用。 ADS型液晶显示器通过同一平面内狭缝电极边 缘所产生的电场以及狭缝电极层与板状电极层间产生的电场来形成 多维电场，从而使液晶盒内狭缝电极之间和电极正上方的所有取向的 液晶分子都能够产生旋转，从而提高了液晶工作效率并增大了透光效 率。
ADS型液晶面板中的 TFT阵列基板一般包括： 衬底， 以及在衬底 上呈阵列状分布的多个像素单元。每一个像素单元包括：分别与衬底 上的栅线和数据线电连接的 TFT, 以及通过过孔与 TFT的源极电连接 的像素电极。具体地，像素电极为具有一定倾斜角度的狭缝电极。 TFT 阵列基板还包括与像素电极形成电场的公共电极，通过像素电极与公 共电极之间形成的电场强度的变化来控制液晶分子的偏转程度。 ADS 型液晶显示器有高对比度、 宽视角、 高清晰等的优点。 因此， 开发一 种半透半反式的 ADS型液晶显示器是非常重要的。
图 1示出了现有技术的半透半反式的 ADS型液晶显示器。如图 1 所示， 该显示器的液晶面板包括上偏光层 1、 上基板 2、 下基板 4、 下偏光层 5， 以及设置在上基板 2和下基板 4之间的液晶层 3。 该液 晶面板的每一个像素单元可分为透射区 T和反射区 R。通过现有技术 工艺来制备该液晶面板时，由于透射区 T和反射区 R的显示模式不同 (即， 透射区 T为常黑显示模式， 而反射区域 R为常白显示模式） ， 需要对 ADS型液晶显示器采用盒内式延迟器（In-cel l retarder)或 多畴结构等工艺， 过程较为复杂且难度较大。 此外， 由于摩擦、 触摸 上基板等原因，上基板上发生的静电会引起半透半反式的 ADS型液晶 显示器内部区域电场不良， 而致使液晶取向不良。
为了解决以上问题， 本发明做了有益改进。 发明内容
(一） 要解决的技术问题
本发明的目的是提供一种半透半反式液晶面板及显示装置， 该 半透半反式液晶面板可防止由于外部产生静电所引起的内部不良，并 且针对该半透半反式液晶面板的加工工艺简单、 快捷。
(二） 技术方案
本发明是通过以下技术方案实现的：
一种半透半反式液晶面板， 所述半透半反式液晶面板的每个像 素单元均包括透射区域和反射区域，所述半透半反式液晶面板还包括 导电性偏光膜层，所述导电性偏光膜层在所述反射区域上具有第一偏 光方向， 所述导电性偏光膜层在所述透射区域上具有第二偏光方向。
设置在所述透射区域的液晶层为透射区液晶层， 设置在所述反 射区域的液晶层为反射区液晶层，其中，所述反射区液晶层的厚度是 所述透射区液晶层的厚度的一半。
根据优选实施例， 所述导电性偏光膜层在所述反射区域上的第 一偏光方向为 45度， 并且所述导电性偏光膜层在所述透射区域上的 第二偏光方向为 90度。
所述导电性偏光膜层可以设置在所述半透半反式液晶面板的显 示侧基板的一面上，所述显示侧基板的所述一面与所述半透半反式液 晶面板的非显示侧基板相背。
所述半透半反式液晶面板可以为高级超维场转换（ADS )型液晶 面板。
本发明还提供一种液晶显示装置， 其包括根据本发明的半透半 反式液晶面板。
(三） 有益效果
与现有技术和产品相比， 本发明有如下优点：
1. 本发明通过在上基板的上表面形成导电性偏光膜层， 能够防 止由于液晶面板外部产生的静电所引起的液晶面板内液晶分子的取 向不良； 以及
2. 由于本发明提供的导电性偏光膜层形成在上基板的外侧， 从 而避免了对 ADS型半透半反式液晶面板采用盒内式延迟器工艺，使得 加工工艺简单快捷。此外， 由于该导电性偏光膜层可采用单层薄膜结 构， 从而省去了上偏光片（或上偏光层）的加工工艺， 提高了加工效 率并降低了加工成本。 附图说明
图 1是根据现有技术的半透半反式 ADS型液晶面板示意图； 图 2是根据本发明实施例的半透半反式 ADS型液晶面板示意图。 附图标记：
1、 上偏光层； la、 导电性偏光膜层； 11、 设置在反射区上的导 电性偏光膜层； 12、 设置在透射区上的导电性偏光膜层； 2、 上基板； 3、 液晶层； 311、 反射区液晶层； 312、 反射层； 313、 树脂层； 321、 透射区液晶层； 4、 下基板； 5、 下偏光层。 具体实施方式
下面结合附图对本发明的具体实施方式做一个详细的说明。 如图 2所示， 本实施例提供一种 ADS型半透半反式液晶面板， 其包括设置在上基板 2的上表面上的导电性偏光膜层 la， 作为液晶 面板的上偏光膜层。液晶面板还包括下基板 4和设置在上基板 1与下 基板 4之间的均匀定向的液晶层 3。在下基板 4的下表面上设置下偏 光层 5。 可以在上基板 2之上形成彩色滤光片 （未示出） ， 并且可以 在下基板 4之下形成薄膜晶体管（未示出）。半透半反式液晶面板的 每个像素单元可以包括透射区域 T和反射区域 R。设置在透射区 T的 液晶层 3为透射区液晶层 321，设置在反射区 R的液晶层 3为反射区 液晶层 311。在反射区液晶层 311与下基板 4之间依次设置有反射层 312和树脂层 313。
导电性偏光膜层 la可以设置在上基板 2的上表面上， 即设置在 半透半反式液晶面板的显示侧基板（上基板 2 )与半透半反式液晶面 板的非显示侧基板 （下基板 4) 相背的一面。 导电性偏光膜层 la在 反射区域 R上具有第一偏光方向， 导电性偏光膜层 la在透射区域 T 上具有第二偏光方向。可以采用印刷方式在上基板 2上面涂布导电性 偏光膜层 la。
根据本实施例， 由于在上基板 2上设置有导电性偏光膜层 la， 在上基板 2上发生的静电可通过导电性偏光膜层 la被引导至上基板 2之外而不会引起液晶层 3的内液晶分子的取向不良。根据本实施例 提供的导电性偏光膜层可适用于各种不同显示模式的液晶面板，比如 扭曲向列 （Twi sted Neraatic , TN) 模式面板、 平面转换（In-Plane Switching, IPS)模式面板等。 特别地， 对于 ADS型半透半反式液晶 面板而言，能够避免在其基板内采用盒内式延迟器工艺，使得加工工 艺简单快捷。
根据本实施例， 液晶层 3包括反射区液晶层 311与透射区液晶 层 321。反射区液晶层 312的厚度可以是透射区液晶层 311的厚度的 一半。 可以通过树脂层 313的厚度来控制反射区液晶层 311的厚度。 根据一个实施例，液晶层 3中包括的反射区液晶层 311可以具有约为 2. 1 μπι的厚度， 透射区液晶层 321可以具有约为 4. 2 μπι的厚度。 需 要说明的是，反射区液晶层 311和透射区液晶层 321的厚度没有被限 定， 只要能实现常白模式的半透半反型液晶面板即可。
导电性偏光膜层可采用层状叠加结构， 其为包括了导电薄膜层 和偏光膜层的组合的层状结构，但这种结构使加工工艺繁琐。优选地， 可以采用为单层薄膜结构的导电性偏光膜层， 从而省去了上偏光片 (或上偏光层）的加工工艺， 提高了加工效率并降低了加工成本。可 以选用导电性透明材料来加工导电性偏光层， 参考专利： JP 2009-230130, 其全部内容通过引用合并于此。
参见图 2， 导电性偏光膜层 la可以包括设置在反射区 R上的部 分 11和设置在透射区 T上的部分 12 (以下分别简称为偏光膜层反射 部分 11和偏光膜层透射部分 12 ) 。 偏光膜层反射部分 11设置在反 射区液晶层 311上方， 偏光膜层反射部分 11的第一偏光方向与反射 区液晶层 311的偏光方向相对应。 偏光膜层透射部分 12设置在透射 区液晶层 321上方， 偏光膜层透射部分 12的第二偏光方向与透射区 液晶层 321的偏光方向相对应。与反射区液晶层 311对应的偏光膜层 反射部分 11的第一偏光方向和与透射区液晶层 321对应的偏光膜层 透射部分 12的第二偏光方向可以是不同的。
优选的， 偏光膜层反射部分 1 1的第一偏光方向可以为 45度， 偏光膜层透射部分 12的第二偏光方向可以为 90度，从而得到反射区 域 R和透射区域 T都是常白模式的 ADS型半透半反式液晶面板。
需要说明的是， 上述第一和第二偏光方没有被限定， 只要能实 现常白模式的半透半反型液晶面板即可。
进一步， 可以在根据本实施例提供的 ADS型半透半反式液晶面 板的上基板 2和下基板 4上涂布 PI液， 并进行摩擦来制备液晶取向 层。 上基板 2的摩擦方向可以为 45度， 下基板 4的摩擦方向可以为 225度。
可以在下基板 4下设置下偏光层 5，下偏光层 5的偏光方向可以 为 0度。
根据本实施例的液晶面板可以应用于各种液晶显示装置以及包 括液晶显示装置的电子设备， 例如， 液晶显示器、 0LED 显示器、 手 机、 平板电脑、 电视机、 笔记本电脑、 数码相框、 导航仪以及任何具 有显示功能的产品或部件。
以上所述仅为本发明的优选实施例， 并不用以限制本发明， 凡 在本发明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权利要求
1. 一种半透半反式液晶面板， 所述半透半反式液晶面板的每个 像素单元均包括透射区域和反射区域， 其特征在于，
所述半透半反式液晶面板还包括导电性偏光膜层， 所述导电性 偏光膜层在所述反射区域上具有第一偏光方向，所述导电性偏光膜层 在所述透射区域上具有第二偏光方向。
2. 根据权利要求 1所述的半透半反式液晶面板， 其特征在于， 设置在所述透射区域的液晶层为透射区液晶层， 设置在所述反 射区域的液晶层为反射区液晶层，其中，所述反射区液晶层的厚度是 所述透射区液晶层的厚度的一半。
3. 根据权利要求 1所述的半透半反式液晶面板， 其特征在于， 所述导电性偏光膜层在所述反射区域上的第一偏光方向为 45 度， 并且所述导电性偏光膜层在所述透射区域上的第二偏光方向为 90度。
4. 根据权利要求 1所述半透半反式液晶面板， 其特征在于， 所述导电性偏光膜层设置在所述半透半反式液晶面板的显示侧 基板的一面上，所述显示侧基板的所述一面与所述半透半反式液晶面 板的非显示侧基板相背。
5. 根据权利要求 1所述半透半反式液晶面板， 其特征在于， 所述半透半反式液晶面板为高级超维场转换（ADS )型液晶面板。
6. 一种液晶显示装置， 其包括如权利要求 1-5任一项所述的半 透半反式液晶面板。
PCT/CN2014/076435 2013-08-16 2014-04-29 半透半反式液晶面板及显示装置 Ceased WO2015021793A1 (zh)

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