WO2017071317A1 - 液晶显示面板 - Google Patents

液晶显示面板 Download PDF

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Publication number
WO2017071317A1
WO2017071317A1 PCT/CN2016/090831 CN2016090831W WO2017071317A1 WO 2017071317 A1 WO2017071317 A1 WO 2017071317A1 CN 2016090831 W CN2016090831 W CN 2016090831W WO 2017071317 A1 WO2017071317 A1 WO 2017071317A1
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WO
WIPO (PCT)
Prior art keywords
substrate
liquid crystal
compensation film
display panel
crystal display
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PCT/CN2016/090831
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English (en)
French (fr)
Inventor
杨亚锋
李鑫
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京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/501,942 priority Critical patent/US10564476B2/en
Publication of WO2017071317A1 publication Critical patent/WO2017071317A1/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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133634—Birefringent elements, e.g. for optical compensation the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell substrates
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/02—Number of plates being 2
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/06—Two plates on one side of the LC cell

Definitions

  • Embodiments of the present invention relate to a liquid crystal display panel.
  • a liquid crystal display panel cooperates with a polarizer to perform image display.
  • the polarizer may be disposed inside or outside the liquid crystal display panel. Compared with the structure in which the polarizer is disposed outside the liquid crystal display panel, the structure in which the polarizer is disposed inside the liquid crystal display panel is thinner, and is suitable for the development trend of thinning and thinning of the liquid crystal display panel.
  • a liquid crystal display panel includes: first and second substrates opposite to each other; and a liquid crystal layer disposed between the first substrate and the second substrate; an alignment film disposed inside the first substrate; a compensation film on the inner side or the outer side of the second substrate; wherein an inner side of the first substrate and an inner side of the second substrate are opposite sides, and an outer side of the second substrate is opposite to the second substrate The opposite side of the inside.
  • a first polarizer is disposed between the first substrate and the alignment film; and in a case where the compensation film is disposed inside the second substrate, the second substrate and the compensation film A second polarizer is disposed between the two.
  • the compensation film is a viewing angle compensation film.
  • the first substrate is a counter substrate and the second substrate is an array substrate.
  • the first substrate is an array substrate
  • the second substrate is an opposite substrate
  • the first substrate is disposed without a compensation film.
  • the second substrate is disposed without an alignment film.
  • the polarization directions of the first polarizer and the second polarizer are parallel to each other or perpendicular to each other.
  • FIG. 1 is a schematic view of a liquid crystal display panel according to a technique
  • FIG. 2 is a schematic view of a liquid crystal display panel according to an embodiment of the present invention.
  • FIG. 3 is another schematic view of a liquid crystal display panel in accordance with an embodiment of the present invention.
  • the liquid crystal display panel includes a color film substrate 10 and an array substrate 20 disposed opposite to each other, and a liquid crystal layer 60 disposed between the color filter substrate 10 and the array substrate 20.
  • the inner side of the color filter substrate 10 is polarized layer by layer.
  • the sheet 30 and the alignment film 40, the polarizer 30 and the alignment film 40 are provided layer by layer on the inner side of the array substrate 20. Since the liquid crystal is an optically anisotropic substance and the extinction ratio of the polarizer is different at different polar angles, the liquid crystal display panel is prone to light leakage at an oblique viewing angle.
  • the liquid crystal display panel needs to add a compensation film between the polarizer and the alignment film for optical compensation, so as to reduce the light leakage and increase the range of the viewing angle.
  • the alignment film 40 is used to make liquid crystal
  • the liquid crystal molecules in the layer 60 are oriented, and therefore the alignment film 40 must be in contact with the liquid crystal layer 60; in this case, it is necessary to form the compensation film 50 and then form the alignment film 40.
  • the compensation film 50 is not resistant to high temperatures and the alignment film 40 requires a high temperature process to be formed, thereby causing a high temperature process of forming the alignment film 40 to degrade or fail the performance of the compensation film 50 that has been formed.
  • a liquid crystal display panel provided by an embodiment of the present invention, as shown in FIG. 2, includes:
  • first substrate 110 and a second substrate 120 opposite to each other and a liquid crystal layer 130 disposed between the first substrate 110 and the second substrate 120;
  • An alignment film 300 disposed on the inner side of the first substrate 110;
  • a compensation film 400 disposed on the inner side or the outer side of the second substrate 120;
  • the inner sides of the first substrate 110 and the second substrate 120 are opposite sides, and the outer side of the second substrate 120 is a side opposite to the inner side of the second substrate 120.
  • the inner side of the first substrate 110 is the side of the first substrate 110 facing the liquid crystal layer 130
  • the outer side of the first substrate 110 is the side of the first substrate 110 away from the liquid crystal layer 130
  • the inner side of the second substrate 120 is the first
  • the outer side of the second substrate 120 is the side of the second substrate 120 remote from the liquid crystal layer 130.
  • an alignment film is disposed inside the first substrate, and a compensation film is disposed inside or outside the second substrate, that is, an alignment film is formed on the inner side of the first substrate without forming on the inner side or the outer side of the first substrate.
  • the compensation film forms a compensation film on the inner side or the outer side of the second substrate without forming an alignment film on the inner side of the second substrate.
  • the first substrate is an opposite substrate, and correspondingly, the second substrate is an array substrate; in this case, the alignment film may be formed only on the inner side of the opposite substrate, and correspondingly, the compensation film is formed on the inner side of the array substrate. Or outside.
  • the first substrate is an array substrate, and correspondingly, the second substrate is an opposite substrate; in this case, the alignment film is formed only on the inner side of the array substrate, and correspondingly, the compensation film is formed on the inner side of the opposite substrate or Outside.
  • the opposite substrate is a color film substrate.
  • the compensation film 400 is disposed inside the second substrate 120; a first polarizer 210 is disposed between the first substrate 110 and the alignment film 300; A second polarizer 220 is disposed between the 120 and the compensation film 400.
  • the compensation film, the first polarizer and the second polarizer are both built in, which makes the liquid crystal display panel relatively thin, and is suitable for the development trend of thinning and thinning of the liquid crystal display panel.
  • the compensation film is a viewing angle compensation film.
  • the viewing angle compensation film can reduce light leakage and expand the viewing angle.
  • the compensation film that meets the above requirements can better reduce light leakage and expand the viewing angle.
  • the ADS mode is an abbreviation of the Advanced Super Dimension Switch mode; in the ADS mode liquid crystal display panel, the pixel electrode and the common electrode are both formed on the array substrate and the pixel electrode and the common electrode are disposed in different layers. One of the pixel electrode and the common electrode located in the lower layer is a plate electrode, and one of the pixel electrode and the common electrode located in the upper layer is a slit electrode.
  • the IPS mode is an abbreviation of the In-Plane-Switching mode; in the IPS mode liquid crystal display panel, the pixel electrode and the common electrode are both disposed on the array substrate and may be disposed in the same layer or different layers, and The pixel electrode and the common electrode are both slit electrodes.
  • the compensation film is two layers; the compensation film disposed inside the second polarizer is a first compensation film 410, and the first compensation film
  • the compensation film disposed inside the first compensation film is a second compensation film, and the retardation amount of the second compensation film is equal to the absolute value of the retardation amount of the liquid crystal layer
  • the delay is reversed.
  • the compensation film that meets the above requirements can better reduce light leakage and expand the viewing angle.
  • the inner side of the second polarizer is the side of the second polarizer facing the liquid crystal layer
  • the inner side of the first compensation film is the side of the first compensation film facing the liquid crystal layer.
  • the VA mode is an abbreviation of the Vertical Alignment mode
  • the TN mode is an abbreviation of the Twisted Nematic mode
  • the common electrode is disposed on the opposite substrate.
  • the pixel electrode is disposed on the array substrate.
  • the X-axis, Y-axis and Z-axis of the compensation film are the coordinate axes along the length, width and thickness direction of the compensation film, respectively.
  • the polarization directions of the first polarizer 210 and the second polarizer 220 are parallel to each other or perpendicular to each other.
  • the first polarizer and the second polarizer are formed using an organic substance. Further, the first polarizer and the second polarizer are formed by stretching an organic material.

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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)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

提供一种液晶显示面板。该液晶显示面板包括：相对而置的第一基板(110)和第二基板(120)以及设置在所述第一基板(110)和所述第二基板(120)之间的液晶层(130)；设置在所述第一基板(110)内侧的取向膜(300)；设置在所述第二基板(120)内侧或外侧的补偿膜(400)；其中，所述第一基板(110)的内侧和第二基板(120)的内侧是两者相对的侧面，所述第二基板(120)的外侧是与所述第二基板(120)的内侧相反的侧面。

Description

液晶显示面板 技术领域
本发明的实施例涉及到一种液晶显示面板。
背景技术
通常地，液晶显示面板与偏光片相配合以进行图像显示。偏光片可以设置在液晶显示面板的内部或外部。与偏光片设置在液晶显示面板外部的结构相比，偏光片设置在液晶显示面板内部的结构更薄，适合液晶显示面板轻薄化的发展趋势。
发明内容
根据本发明的实施例，提供一种液晶显示面板。该液晶显示面板包括：相对而置的第一基板和第二基板以及设置在所述第一基板和所述第二基板之间的液晶层；设置在所述第一基板内侧的取向膜；设置在所述第二基板内侧或外侧的补偿膜；其中，所述第一基板的内侧和第二基板的内侧是两者相对的侧面，所述第二基板的外侧是与所述第二基板的内侧相反的侧面。
例如，所述第一基板和所述取向膜之间设置有第一偏光片；并且在所述补偿膜设置在所述第二基板内侧的情形下，所述第二基板和所述补偿膜之间设置有第二偏光片。
例如，所述补偿膜是视角补偿膜。
例如，当所述液晶显示面板是高级超维场转换或平面方向转换模式的液晶显示面板时，所述补偿膜的相位延迟量Re＝λ/2，其中，λ为所述液晶显示面板背光源光线的主波长；所述补偿膜在X轴，Y轴和Z轴的折射率nx，ny和nz满足以下公式，(nx-nz)/(nx-ny)＝0.5。
例如，当所述液晶显示面板是垂直配向或扭曲向列模式的液晶显示面板时，所述补偿膜是两层；设置在所述第二偏光片内侧的补偿膜是第一补偿膜，第一补偿膜的相位延迟量Re＝λ/2，λ为液晶显示面板背光源光线的主波长；所述第一补偿膜在X轴，Y轴和Z轴的折射率nx，ny和nz满足以下公式， (nx-nz)/(nx-ny)＝0.5；设置在所述第一补偿膜内侧的补偿膜是第二补偿膜，所述第二补偿膜延迟量与液晶层的延迟量的绝对值相等，延迟方向相反。
例如，所述第一基板是对向基板，所述第二基板是阵列基板。
例如，所述第一基板是阵列基板，所述第二基板是对向基板。
例如，所述第一基板设置为不具有补偿膜。
例如，所述第二基板设置为不具有取向膜。
例如，所述第一偏光片和第二偏光片的偏振方向相互平行或相互垂直。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为根据一种技术的液晶显示面板的示意图；
图2为根据本发明实施例的液晶显示面板的示意图；以及
图3为根据本发明实施例的液晶显示面板的另一示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为根据一种技术的液晶显示面板的示意图，其中偏光片设置在液晶显示面板的内部。如图1所示，液晶显示面板包括相对而置的彩膜基板10和阵列基板20以及设置在彩膜基板10和阵列基板20之间的液晶层60，彩膜基板10的内侧逐层设置偏光片30和取向膜40，阵列基板20的内侧逐层设置偏光片30和取向膜40。由于液晶是光学各向异性的物质并且偏光片在不同的极角下消光比不同，所以液晶显示面板在斜视角下容易产生漏光现象。为了解决这一问题，液晶显示面板需要在偏光片和取向膜之间增加补偿膜进行光学补偿，以达到减少漏光、增加视角范围的作用。取向膜40用于使液晶 层60中的液晶分子取向，因此取向膜40必须与液晶层60接触；在此情形下，就需要先形成补偿膜50然后再形成取向膜40。补偿膜50不耐高温而取向膜40需要高温工艺形成，从而导致形成取向膜40的高温工艺使得已经形成的补偿膜50性能降低或失效。
本发明实施例提供的一种液晶显示面板，如图2所示，包括：
相对而置的第一基板110和第二基板120以及设置在第一基板110和第二基板120之间的液晶层130；
设置在所述第一基板110的内侧的取向膜300；
设置在所述第二基板120的内侧或外侧的补偿膜400；
其中，所述第一基板110和第二基板120的内侧是两者相对的侧面，所述第二基板120外侧是与所述第二基板120的内侧相反的侧面。换言之，第一基板110的内侧是第一基板110的朝向液晶层130的一侧，第一基板110的外侧是第一基板110的远离液晶层130的一侧，第二基板120的内侧是第二基板120的朝向液晶层130的一侧，第二基板120的外侧是第二基板120的远离液晶层130的一侧。
本发明实施例提供的液晶显示面板，在第一基板内侧设置取向膜，在第二基板内侧或外侧设置补偿膜，即在第一基板的内侧形成取向膜而不在第一基板的内侧或外侧形成补偿膜，在第二基板的内侧或外侧形成补偿膜而不在第二基板的内侧形成取向膜。这样，第一基板不需要再形成取向膜，也就不需要形成取向膜的高温工艺，保证了补偿膜的补偿作用。
例如，第一基板是对向基板，相应的，所述第二基板是阵列基板；在此情形下，取向膜可以只形成在对向基板内侧，相对应的，补偿膜形成在阵列基板的内侧或外侧。例如，第一基板是阵列基板，相应的，所述第二基板是对向基板；在此情形下，取向膜只形成在阵列基板的内侧，相应的，补偿膜形成在对向基板的内侧或外侧。例如，对向基板是彩膜基板。
例如，如图2所示，所述补偿膜400设置在所述第二基板120内侧；所述第一基板110和所述取向膜300之间设置有第一偏光片210；所述第二基板120和所述补偿膜400之间设置有第二偏光片220。在图2所示的情况下，补偿膜，第一偏光片和第二偏光片都是内置的，可以使液晶显示面板比较薄，适合液晶显示面板轻薄化的发展趋势。
例如，所述补偿膜是视角补偿膜。视角补偿膜可以减少漏光，扩大视角。
例如，当所述液晶显示面板是ADS/IPS模式的液晶显示面板时，所述补偿膜的相位延迟量Re＝λ/2，其中，λ为所述液晶显示面板背光源光线的主波长；所述补偿膜在X轴，Y轴和Z轴的折射率nx，ny和nz满足以下公式，(nx-nz)/(nx-ny)＝0.5。符合上述要求的补偿膜，可以更好的减少漏光，扩大视角。
ADS模式是高级超维场转换(Advanced Super Dimension Switch)模式的简称；在ADS模式的液晶显示面板中，像素电极和公共电极均形成在阵列基板上并且像素电极和公共电极设置在不同的层，像素电极和公共电极中位于下层的一方为板状电极，像素电极和公共电极中位于上层的一方为狭缝电极。IPS模式是平面方向转换(In-Plane-Switching)模式的简称；在IPS模式的液晶显示面板中，像素电极和公共电极均设置在阵列基板上且可设置在相同的层或不同的层，并且像素电极和公共电极均为狭缝电极。
例如，当所述液晶显示面板是VA/TN模式的液晶显示面板时，所述补偿膜是两层；设置在所述第二偏光片内侧的补偿膜是第一补偿膜410，第一补偿膜的相位延迟量Re＝λ/2，λ为液晶显示面板背光源光线的主波长；所述第一补偿膜410在X轴，Y轴和Z轴的折射率nx，ny和nz满足以下公式，(nx-nz)/(nx-ny)＝0.5；设置在所述第一补偿膜内侧的补偿膜是第二补偿膜，所述第二补偿膜延迟量与液晶层的延迟量的绝对值相等，延迟方向相反。符合上述要求的补偿膜，可以更好的减少漏光，扩大视角。第二偏光片的内侧是第二偏光片的朝向液晶层的一侧，第一补偿膜的内侧是第一补偿膜的朝向液晶层的一侧。
VA模式是垂直配向(Vertical Alignment)模式的简称，TN模式是扭曲向列(Twisted Nematic)模式的简称；在VA模式的液晶显示面板和TN模式的液晶显示面板中，公共电极设置在对向基板上，像素电极设置在阵列基板上。
补偿膜的X轴，Y轴和Z轴分别是沿补偿膜的长度，宽度和厚度方向的坐标轴。
例如，所述第一偏光片210和第二偏光片220的偏振方向相互平行或相互垂直。
例如，所述第一偏光片和第二偏光片采用有机物形成。进一步地，所述第一偏光片和第二偏光片通过有机物拉伸的方式制作而成。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2015年10月28日递交的第201510716010.X号中国专利申请的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (10)

  1. 一种液晶显示面板，包括：
    相对而置的第一基板和第二基板以及设置在所述第一基板和所述第二基板之间的液晶层；
    设置在所述第一基板内侧的取向膜；
    设置在所述第二基板内侧或外侧的补偿膜；
    其中，所述第一基板的内侧和第二基板的内侧是两者相对的侧面，所述第二基板的外侧是与所述第二基板的内侧相反的侧面。
  2. 如权利要求1所述的液晶显示面板，其中，所述第一基板和所述取向膜之间设置有第一偏光片；并且在所述补偿膜设置在所述第二基板内侧的情形下，所述第二基板和所述补偿膜之间设置有第二偏光片。
  3. 如权利要求2所述的液晶显示面板，其中，所述补偿膜是视角补偿膜。
  4. 如权利要求3所述的液晶显示面板，其中，当所述液晶显示面板是高级超维场转换或平面方向转换模式的液晶显示面板时，
    所述补偿膜的相位延迟量Re＝λ/2，其中，λ为所述液晶显示面板背光源光线的主波长；
    所述补偿膜在X轴，Y轴和Z轴的折射率nx，ny和nz满足以下公式，(nx-nz)/(nx-ny)＝0.5。
  5. 如权利要求3所述的液晶显示面板，其中，当所述液晶显示面板是垂直配向或扭曲向列模式的液晶显示面板时，所述补偿膜是两层；
    设置在所述第二偏光片内侧的补偿膜是第一补偿膜，第一补偿膜的相位延迟量Re＝λ/2，λ为液晶显示面板背光源光线的主波长，第二偏光片的内侧是第二偏光片的朝向液晶层的一侧；
    所述第一补偿膜在X轴，Y轴和Z轴的折射率nx，ny和nz满足以下公式，(nx-nz)/(nx-ny)＝0.5；
    设置在所述第一补偿膜内侧的补偿膜是第二补偿膜，所述第二补偿膜延迟量与液晶层的延迟量的绝对值相等，延迟方向相反，第一补偿膜的内侧是第一补偿膜的朝向液晶层的一侧。
  6. 如权利要求1-5任一项所述的液晶显示面板，其中，所述第一基板是 对向基板，所述第二基板是阵列基板。
  7. 如权利要求1-5任一项所述的液晶显示面板，其中，所述第一基板是阵列基板，所述第二基板是对向基板。
  8. 根据权利要求1-5任一项所述的液晶显示面板，其中，所述第一基板设置为不具有补偿膜。
  9. 根据权利要求1-5任一项所述的液晶显示面板，其中，所述第二基板设置为不具有取向膜。
  10. 如权利要求2所述的液晶显示面板，其中，所述第一偏光片和第二偏光片的偏振方向相互平行或相互垂直。
PCT/CN2016/090831 2015-10-28 2016-07-21 液晶显示面板 WO2017071317A1 (zh)

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