CN105278154A - 液晶显示装置及其液晶显示面板 - Google Patents

液晶显示装置及其液晶显示面板 Download PDF

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CN105278154A
CN105278154A CN201510836023.0A CN201510836023A CN105278154A CN 105278154 A CN105278154 A CN 105278154A CN 201510836023 A CN201510836023 A CN 201510836023A CN 105278154 A CN105278154 A CN 105278154A
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polaroid
liquid crystal
display panels
light
reflection
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谢畅
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US14/898,080 priority patent/US20180031914A1/en
Priority to PCT/CN2015/096266 priority patent/WO2017088204A1/zh
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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
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    • 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 
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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
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    • G02F1/133553—Reflecting elements
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    • 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
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    • G02F1/133553—Reflecting elements
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    • 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 
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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
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Abstract

本发明提供一种液晶显示装置及其液晶显示面板，设置于阵列基板一侧的偏光片包括偏光片基底和散射层，该偏光片的一侧设置有仅与光反射区对应的反射层，且该反射层邻近该偏光片的反射面为平面，反射面用于对入射的光进行镜面反射，散射层用于对反射面反射的光进行漫反射。本发明能够采用较少的光罩制程实现透反式的显示效果，简化制造工艺、降低制造成本的同时确保反射效果。

Description

液晶显示装置及其液晶显示面板
技术领域
本发明涉及液晶显示技术领域，特别是涉及一种半透半反的液晶显示面板以及具有该液晶显示面板的液晶显示装置。
背景技术
基于液晶分子自身不发光，液晶显示面板需要光源以显示图像，且根据光源类型分为透射式、反射式和透反式。其中，透射式液晶显示面板采用背光源，像素电极为透明电极以利于光透射液晶层以显示图像；反射式液晶显示面板采用前光源或外界光源，反射层反射光并使光透射液晶层以显示图像；透反式液晶显示面板可视为透射式和反射式的结合，可同时采用背光源、前光源或外界光源显示图像。
透反式液晶显示面板兼具透射式和反射式液晶显示面板的优点，既可以在暗的环境下显示明亮的图像以便于室内使用，也可以在室外使用。为了使观看者能在各个视角都能观看到均匀的反射效果，现有的透反式液晶显示面板的反射层需设计采用漫反射的反射方式，因此反射层的反射面具有凹凸结构以实现漫反射。该反射层的制造方法一般是：首先制作一层树脂层基底，由于反射层只需设置于反射区而无需设置于透射区，因此该工序需要增加一道光罩(Mask)制程；然后进行曝光、显影、刻蚀等制程以在树脂层基底上形成凹凸结构，该工序也需要增加一道光罩制程；最后在凹凸结构上形成反射层即可。
可见，现有技术需要至少两道光罩制程才能制得反射层，导致制造工艺较多且制造成本较高，另外，制造凹凸结构时需确保较高的尺寸精度才能保证漫反射的效果，而极易出现的误差会影响反射效果。
发明内容
有鉴于此，本发明实施例所要解决的技术问题是提供一种液晶显示装置及其液晶显示面板，采用较少的光罩制程实现透反式的显示效果，简化制造工艺、降低制造成本的同时确保反射效果。
本发明实施例提供的液晶显示面板，包括相对间隔设置的阵列基板和彩膜基板及夹持于两者之间的液晶层，阵列基板包括交错设置的光反射区和光透射区，液晶显示面板还包括：第一偏光片，位于阵列基板的一侧，且与光反射区和光透射区对应设置，第一偏光片包括偏光片基底和散射层；反射层，位于第一偏光片背向阵列基板的一侧，且与光反射区对应设置，反射层邻近第一偏光片的反射面为平面；其中，反射面用于对入射的光进行镜面反射，包括从液晶显示面板外射向彩膜基板并入射至反射层的光，散射层用于对反射面反射的光进行漫反射。
其中，反射层包括直接形成于第一偏光片上的不透光的金属层。
其中，反射层包括透明基底和光反射片，光反射片形成于透明基底上，透明基底固定于第一偏光片上。
其中，光反射片包括不透光的金属层。
其中，反射层由涂覆、溅射、蒸镀及胶黏贴中的任意组合方式制得。
其中，阵列基板邻近液晶层的一侧设置有像素电极，彩膜基板邻近液晶层的一侧设置有公共电极，所述公共电极和所述像素电极均与光反射区和光透射区对应设置。
其中，阵列基板邻近液晶层的一侧设置有像素电极和公共电极，所述公共电极和所述像素电极均与光反射区和光透射区对应设置。
其中，液晶显示面板还包括设置于彩膜基板一侧的第二偏光片，所述第二偏光片和第一偏光片具有相同的结构。
本发明实施例提供的液晶显示装置，包括上述液晶显示面板。
其中，液晶显示装置还包括背光模组，所述背光模组发出的背光射向第一偏光片并穿射液晶层，而后入射至第二偏光片。
区别于现有技术，本发明实施例的液晶显示装置及其液晶显示面板，设计位于阵列基板一侧的偏光片具有散射层且在光反射区增加反射层，通过反射层对入射的光进行镜面反射、散射层对反射层反射的光进行漫反射，以此实现漫反射效果，制造平面结构的反射层和散射层时无需采用制造凹凸结构的光罩，从而能够采用较少的光罩制程实现透反式的显示效果，简化制造工艺、降低制造成本；同时，无需考虑确保漫反射效果的凹凸结构的尺寸精度，从而确保反射效果。
附图说明
图1是本发明的液晶显示面板一实施例的结构剖视图；
图2是图1所示的第一偏光片的结构剖视图；
图3是本发明的液晶显示面板另一实施例的结构剖视图；
图4是本发明的液晶显示装置一实施例的结构剖视图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明所提供的示例性的实施例的技术方案进行清楚、完整地描述。
图1是本发明的液晶显示面板一实施例的结构剖视图。请参阅图1所示，液晶显示面板10包括相对间隔设置的阵列基板(ArraySubstrate,又称ThinFilmTransistorSubstrate,TFT基板或薄膜晶体管基板)11和彩膜基板(ColorFilter，CF基板或彩色滤光片基板)12，以及夹持于阵列基板11和彩膜基板12之间的液晶层13，其中，液晶层13位于阵列基板11和彩膜基板12叠加组合成的液晶盒内。
本发明实施例的液晶显示面板10为透反式液晶显示面板，具有交错设置的光反射区A和光透射区B，需要说明的是，图1中仅示出一个光反射区A和与其相邻的一个光透射区B。如图1所示，与现有技术不同的是液晶显示面板10所设置的反射层14和第一偏光片15。
具体地，第一偏光片15设置于阵列基板11的一侧，且与光反射区A和光透射区B对应设置，结合图2所示，第一偏光片15包括偏光片基底151和散射层152，偏光片基底151和现有技术的偏光片的结构和作用相同；反射层14设置于第一偏光片15背向阵列基板11的一侧，且与光反射区A对应设置，反射层14邻近第一偏光片15的反射面为平面。在本发明实施例中，反射层14的反射面用于对入射的光(箭头所示)进行镜面反射，散射层152用于对反射面所反射的光进行漫反射，通过反射层14和散射层152的共同作用实现对光的漫反射，使得观看者能在更大的视角观看到均匀的反射效果，有利于广视角设计。
当然，液晶显示面板10还包括设置于彩膜基板12一侧的第二偏光片16，该第二偏光片16可以和第一偏光片15具有相同的结构。
本发明实施例由于制造平面结构的反射层14和散射层152时无需采用制造凹凸结构的光罩，从而能够采用较少的光罩制程实现透反式的显示效果，简化制造工艺、降低制造成本；同时，无需考虑确保漫反射效果的凹凸结构的尺寸精度，从而避免误差确保反射效果。
上述散射层152可以通过在第一偏光片15的最外层HC(Hardnesscoating,硬膜)层中加入散射粒子来制得，当然并不限于此。另外，反射面所反射的光包括从液晶显示面板10外射向彩膜基板12并入射至反射层14的光，反射层14可以为透光的金属层，该金属包括但不限于铝、银等，当然反射层14也可以由具有良好反光特性材料制得。
进一步，反射层14可邻近散射层152设置，也可邻近偏光片基底151设置。另外，反射层14可直接形成于第一偏光片15上，也可以具有图3所示的结构，如图3所示，反射层14包括透明基底141和形成于透明基底141上的光反射片142，该透明基底141可采用PET(PolyethyleneTerephthalate，聚对苯二甲酸乙二醇酯)，PE(Polyethylene，聚乙烯)，PVC(PolyvinylChloride，聚氯乙烯)或者其他透光材质制得，透明基底141用于将光反射片142固定于第一偏光片15上，光反射片142用于对光进行镜面反射，其中透明基底141可与光反射区A和光透射区B对应设置，也可仅与光反射区A对应设置。
另外，反射层14或光反射片142可以采用涂覆、溅射、蒸镀及胶黏贴中的任意组合方式制得，当然也可采用CVD(Chemicalvapordeposition，化学气相沉积)工艺等方法，但不限于此。
继续参阅图1所示，阵列基板11包括像素电极111，彩膜基板12包括公共电极121，该公共电极121可以设置为一整面透明电极层，并且像素电极111和公共电极121均与光反射区A和光透射区B对应设置，所谓对应设置指的是：光反射区A和光透射区B均设置有像素电极111和公共电极121，且像素电极111的区域尺寸可等于光反射区A和光透射区B的区域尺寸之和，公共电极121的尺寸可等于光反射区A和光透射区B的尺寸之和。换言之，像素电极111和公共电极121均对应位于光反射区A和光透射区B所限定的区域内。本发明全文所述的用语“对应设置”均可基于此进行理解，例如反射层14与光反射区A对应设置可理解为：反射层14对应位于光反射区A所限定的区域内。
当然，本发明实施例的反射层14和散射层152的设计还可以适用于具有其他结构设计的液晶显示面板10，例如上述像素电极111和公共电极121均设置用于阵列基板11上，此时像素电极111和公共电极121仍均与光反射区A和光透射区B对应设置。
本发明实施例还提供一种图4所示的液晶显示装置40，其包括上述图2和图3所示的液晶显示面板10以及其他组件，例如背光模组41、前框组件42，其中，背光模组41发出的背光从光透射区B射向第一偏光片15并穿射液晶层13，而后入射至第二偏光片16，从而显示图像。由于液晶显示装置40也具有液晶显示面板10的上述设计，因此亦具有相同的有益效果。其中，液晶显示装置40可以为智能手机、平板电脑、电视机、导航仪等具有显示功能的任何终端。
应理解，以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

1.一种液晶显示面板，包括相对间隔设置的阵列基板和彩膜基板以及夹持于两者之间的液晶层，所述阵列基板包括交错设置的光反射区和光透射区，其特征在于，所述液晶显示面板还包括：
第一偏光片，位于所述阵列基板的一侧，且与所述光反射区和所述光透射区对应设置，所述第一偏光片包括偏光片基底和散射层；
反射层，位于所述第一偏光片背向所述阵列基板的一侧，且与所述光反射区对应设置，所述反射层邻近所述第一偏光片的反射面为平面；
其中，所述反射面用于对入射至其上的光进行镜面反射，所述光包括从所述液晶显示面板外射向所述彩膜基板并入射至所述反射层的光，所述散射层用于对所述反射面反射的光进行漫反射。
2.根据权利要求1所述的液晶显示面板，其特征在于，所述反射层包括直接形成于所述第一偏光片上的不透光的金属层。
3.根据权利要求1所述的液晶显示面板，其特征在于，所述反射层包括透明基底和光反射片，所述光反射片形成于所述透明基底上，所述透明基底固定于所述第一偏光片上。
4.根据权利要求3所述的液晶显示面板，其特征在于，所述光反射片包括不透光的金属层。
5.根据权利要求1所述的液晶显示面板，其特征在于，所述反射层由涂覆、溅射、蒸镀以及胶黏贴中的任意组合方式制得。
6.根据权利要求1所述的液晶显示面板，其特征在于，所述阵列基板邻近所述液晶层的一侧设置有像素电极，所述彩膜基板邻近所述液晶层的一侧设置有公共电极，所述公共电极和所述像素电极均与所述光反射区和所述光透射区对应设置。
7.根据权利要求1所述的液晶显示面板，其特征在于，所述阵列基板邻近所述液晶层的一侧设置有像素电极和公共电极，所述公共电极和所述像素电极均与所述光反射区和所述光透射区对应设置。
8.根据权利要求1所述的液晶显示面板，其特征在于，所述液晶显示面板还包括设置于所述彩膜基板一侧的第二偏光片，所述第二偏光片和所述第一偏光片具有相同的结构。
9.一种液晶显示装置，其特征在于，所述液晶显示装置包括权利要求1-8任意一项所述的液晶显示面板。
10.根据权利要求9所述的液晶显示装置，其特征在于，所述液晶显示装置还包括背光模组，所述背光模组发出的背光射向所述第一偏光片并穿射所述液晶层，而后入射至所述第二偏光片。
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