WO2013010350A1 - 一种像素电极及液晶显示面板 - Google Patents

一种像素电极及液晶显示面板 Download PDF

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Publication number
WO2013010350A1
WO2013010350A1 PCT/CN2011/080392 CN2011080392W WO2013010350A1 WO 2013010350 A1 WO2013010350 A1 WO 2013010350A1 CN 2011080392 W CN2011080392 W CN 2011080392W WO 2013010350 A1 WO2013010350 A1 WO 2013010350A1
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Prior art keywords
strip
pixel electrode
trunk
vertical
pixel
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PCT/CN2011/080392
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English (en)
French (fr)
Inventor
张鑫
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深圳市华星光电技术有限公司
上海天马微电子有限公司
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Application filed by 深圳市华星光电技术有限公司, 上海天马微电子有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to DE112011105381.9T priority Critical patent/DE112011105381T5/de
Priority to US13/381,888 priority patent/US20130021570A1/en
Publication of WO2013010350A1 publication Critical patent/WO2013010350A1/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
    • G02F1/1343—Electrodes
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a pixel electrode and a liquid crystal display panel. Background technique
  • Liquid crystal displays have gradually become display devices widely used in various electronic devices such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens, or notebook computer screens.
  • the liquid crystal display includes a backlight module and a liquid crystal display panel, and the liquid crystal display panel is composed of two substrates and a liquid crystal layer filled between the two substrates.
  • Liquid crystal display panels are manufactured in a variety of processes. Currently, Ploymer Stabilized Vertical Alignment (PSVA) liquid crystal display panels are commonly used.
  • PSVA Ploymer Stabilized Vertical Alignment
  • FIG. 1 is a schematic structural view of a PSVA mode liquid crystal display panel in the prior art.
  • the pixel electrode of the conventional PSVA mode liquid crystal display panel is designed as a "meter" type, consisting of a strip-shaped vertical stem 20, a strip-shaped horizontal stem 10, and a strip with an angle of ⁇ 45 degrees and ⁇ 135 degrees with the X-axis.
  • the branch is composed of three parts.
  • the vertical trunk 10 and the horizontal trunk 20 divide the pixel area into four regions (domains), and each region is composed of a strip of obliquely 45-degree branches 30.
  • Figure 1 shows the electrode design of the "meter” shape with mirror symmetry on the top and bottom and left and right.
  • FIG. 2 is a schematic view showing the reverse direction of the liquid crystal after applying a certain voltage (0 to 4 V) to the pixel electrode shown in FIG. 1.
  • the commonly used "meter" type electrode is designed to be energized.
  • the reverse direction of the liquid crystal is gradually tilted from the outside of the pixel electrode toward the inside of the pixel electrode, and the tilting angle is in the strip direction, and the angle between the liquid crystal tilting direction of the four regions and the horizontal trunk 10 is ⁇ 45 degrees, respectively. , ⁇ 135 degrees, both point to the central area of the pixel.
  • the angle between the liquid crystal reverse and the horizontal trunk (X-axis) is: -135 degrees in the first quadrant, -45 degrees in the second quadrant, 45 degrees in the third quadrant, and 135 degrees in the fourth quadrant.
  • the two trunks are not The area of light transmission, because the liquid crystals in the two trunks are reversed along the trunk direction, respectively, at an angle of 0 degrees and 90 degrees with the horizontal trunk, and the upper and lower polarizers are respectively set at an angle of 0 degrees and 90 degrees with the horizontal trunk. Degree, therefore, the transmittance of this region can be calculated from the general VA liquid crystal transmittance formula, which results in a decrease in the aperture ratio; since the liquid crystal orientation in the two trunks is at an angle of 0 degrees and 90 degrees with the horizontal trunk.
  • the discontinuous lines are prone to occur, that is, the liquid crystals at the center of the pixel near the left and right sides of the vertical trunk are pressed against each other to form discontinuous lines, which affects the efficiency of the liquid crystal.
  • the present invention provides a pixel electrode and a liquid crystal display panel including the same, which can effectively solve the problem that the liquid crystals are affected by the liquid crystals which are squeezed by the liquid crystals on the left and right sides of the pixel center near the vertical trunk in the prior art.
  • Technical problem is a pixel electrode and a liquid crystal display panel including the same, which can effectively solve the problem that the liquid crystals are affected by the liquid crystals which are squeezed by the liquid crystals on the left and right sides of the pixel center near the vertical trunk in the prior art.
  • the present invention provides a pixel electrode including vertically intersecting strip-shaped horizontal trunks and strip-shaped vertical trunks, and intersections of the horizontal trunks and the vertical trunks are a coincidence of a center point of the horizontal trunk and a center point of the vertical trunk; wherein each of the four pixel regions is divided by the vertical intersection of the horizontal trunk and the vertical trunk a plurality of strip-shaped branches, each of the plurality of strip-shaped branches extending outwardly at the same angle with respect to the horizontal trunk, the plurality of strip-shaped branches having a space between the two The width of the connecting portion of the strip-shaped branch to the horizontal stem or the vertical stem is smaller than the width of the body portion of the strip-shaped branch.
  • the connecting portion of the strip branches is a polygon whose width gradually decreases along a direction in which the strip branches extend toward the center.
  • the polygon is a quadrangle, and a width of the junction of the quadrilateral with the horizontal trunk or the vertical trunk is smaller than a width of a joint with the body portion.
  • the connecting portions of the different strip branches are different in size or the same.
  • the plurality of strip branches respectively have an angle of 45 degrees with the horizontal trunk and the vertical trunk, and a plurality of strip branches in each of the pixel regions are distributed in parallel.
  • the spacing between the plurality of strips in each of the pixel regions is the same.
  • the spacing between the plurality of strips in each of the pixel regions is different.
  • the four pixel regions which are equally divided by the vertical intersection of the horizontal trunk and the vertical trunk are respectively mirror-symmetrical.
  • the pixel electrode has a "meter" shape as a whole.
  • an embodiment of the present invention further provides a liquid crystal display panel including the pixel electrode as described above.
  • the width of one end of the strip-shaped branch intersecting the horizontal trunk or the vertical trunk is smaller than the width of the strip-shaped branch, that is, the end of the strip-shaped branch near the trunk is thinned, so that the liquid crystal at the place can be better poured.
  • the squeezing in the opposite direction is not easy to occur, thereby helping to suppress the occurrence of discontinuous lines in the center of the pixel, and effectively solving the discontinuity of the liquid crystals on the left and right sides of the center of the pixel near the vertical trunk in the prior art.
  • the line the technical problem affecting the liquid crystal efficiency, improves the liquid crystal efficiency.
  • FIG. 1 is a schematic structural view of a PSVA mode liquid crystal display panel in the prior art
  • FIG. 2 is a schematic diagram of a liquid crystal reversed after a voltage is applied to a pixel electrode as shown in FIG. 1;
  • FIG. 3 is a schematic plan view showing a planar structure of a pixel electrode according to an embodiment of the present invention.
  • Figure 4 is an enlarged schematic view showing a broken line portion of Figure 3;
  • FIG. 5 is a schematic plan view showing a liquid crystal display panel according to an embodiment of the present invention. detailed description
  • the liquid crystal display includes a backlight module and a liquid crystal display panel.
  • the liquid crystal display panel is composed of a first substrate and a second substrate disposed opposite to each other and a liquid crystal layer filled between the two substrates.
  • the display area on the second substrate includes a plurality of pixels. a region in which a thin film transistor and a pixel electrode are disposed, and the present invention is directed to a problem in which a liquid crystal is efficiently squeezed by liquid crystals on the left and right sides of a pixel center near a vertical stem in a pixel electrode of the prior art, which affects liquid crystal efficiency, and provides A novel pixel electrode and a liquid crystal display panel including the pixel electrode can effectively solve the problem.
  • the pixel electrode 6 includes vertically intersecting strip-shaped horizontal stems 62 and strip-shaped vertical stems 64, horizontal stems 62 and vertical masters
  • the intersection of the stem 64 is the coincidence of the center point of the horizontal trunk 62 and the center point of the vertical trunk 64; among the four pixel regions which are equally divided by the horizontal trunk 62 and the vertical trunk 64, each pixel region has a plurality of tiled strip branches 66, a plurality of strip branches 66 in each pixel region extending outwardly at the same angle with respect to the horizontal stem 62, the plurality of strip branches 66 having a space between the two
  • the width of the connecting portion 661 of the strip branch 66 to the horizontal stem 62 or the vertical stem 64 is less than the width of the body portion of the strip branch 66.
  • the connecting portion 661 of the strip branch 66 and the horizontal trunk 62 or the vertical trunk 64 that is, the strip branch 66 is close to the end 661 of the trunk, is a width along the edge.
  • a polygon of the strip branch 66 that gradually decreases toward a center extending direction, such as a quadrangle, a width of a joint of the quadrilateral with the horizontal stem or the vertical stem is smaller than a width of a joint with the body portion
  • it can be other polygons.
  • FIG. 3 and FIG. 4 are only one embodiment of the present invention.
  • the connecting portion 661 of the strip branch 66 and the horizontal trunk 62 or the vertical trunk 64 includes, but is not limited to, the above-mentioned quadrilateral structure. It can be any polygon, such as a triangle, a diamond, a rectangle, a square, a hexagon, etc., as long as it functions to reduce the connection portion of d and strip branches.
  • connecting portions of different strip branches may be different in size or the same size.
  • the spacing between the plurality of strips in each of the pixel regions may also be the same or different.
  • the material of the pixel electrode in the embodiment of the present invention includes, but is not limited to, indium tin oxide (ITO) or indium zinc oxide or amorphous indium tin oxide.
  • ITO indium tin oxide
  • the material of the pixel electrode is ITO, that is, the horizontal stem 62, the vertical stem 64, and the strip branch 66 in FIGS.
  • the liquid crystal is When a voltage is applied, it will be tilted toward the inside of the pixel (pixel) along the direction of the pixel electrode (stripe), that is, tilted toward the center side, due to the width of the end of the strip branch 66 intersecting the horizontal stem 62 or the vertical stem 64. It is smaller than the width of the strip branch 66, that is, the branch near the trunk becomes thinner, and the liquid crystal at the place can be better reversed, and the extrusion in the opposite direction is less likely to occur, thereby contributing to suppressing the discontinuous line in the center of the pixel.
  • the present invention effectively solves the technical problem that the liquid crystals in the center of the pixel near the vertical stem are pressed against each other and the discontinuous lines are formed in the center of the pixel, which affects the liquid crystal efficiency, thereby improving the liquid crystal efficiency.
  • the angle between the plurality of strip branches 66 in each pixel region relative to the horizontal stem 62 includes, but is not limited to, 45 degrees, and FIGS. 3 and 4 take the angle of 45 degrees as an example;
  • the horizontal trunk 62 and the vertical trunk 64 are perpendicularly intersected and equally divided.
  • the four regions are mirror-symmetrical, that is, the regions on both sides of the horizontal trunk 62 are mirror-symmetrical, and the regions on both sides of the vertical trunk 64 are mirror-symmetrical; the pixel electrode 6 has a "meter" shape as a whole.
  • the pixel electrode of the embodiment of the invention can be applied to a PSVA liquid crystal display panel, a Twisted Nematic (TN) liquid crystal display panel, or a Pattern Vertical Alignment (PVA) liquid crystal display panel.
  • TN Twisted Nematic
  • PVA Pattern Vertical Alignment
  • FIG. 5 is a schematic view showing a planar structure of a liquid crystal display panel according to an embodiment of the present invention.
  • the liquid crystal display panel 8 includes the pixel electrode 6 in the embodiment of the present invention.
  • the pixel electrode 6 For the description of the structure of the pixel electrode 6, reference may be made to the implementation of the pixel electrode 6 described above. For example, I won't go into details here.
  • the liquid crystal display panel 8 further includes a data line, a scan line, a switch unit, and the like.
  • the width of one end of the strip-shaped branch intersecting the horizontal trunk or the vertical trunk is smaller than the width of the strip-shaped branch, that is, the end of the strip-shaped branch near the trunk is thinned, so that the liquid crystal at the place can be
  • the better backward direction is obtained, and the extrusion in the opposite direction is not easy to occur, thereby helping to suppress the occurrence of discontinuous lines in the center of the pixel, and effectively solving the mutual squeezing of liquid crystals on the left and right sides of the pixel center near the vertical trunk in the prior art.
  • the discontinuous line is pressed and the technical problem affecting the liquid crystal efficiency is improved, and the liquid crystal efficiency is improved.

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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)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种像素电极（6）以及一种液晶显示面板（8），像素电极（6）包括垂直相交的条状的水平主干（62）和条状的竖直主干（64），水平主干（62）与竖直主干（64）的交点为水平主干（62）的中心点及竖直主干（64）的中心点的重合；由水平主干（62）与竖直主干（64）垂直相交所均分而成的四个像素区域中，每个像素区域具有多个平铺的条状分支（66），每个像素区域中的多个条状分支（66）相对于水平主干（62）以相同的夹角向外延伸，多个条状分支（66）两两之间具有间隔，条状分支（66）与水平主干（62）或竖直主干（64）的连接部分（661）的宽度小于条状分支（66）的主体部分的宽度。本发明解决了现有技术中像素中心靠近竖直主干（64）处左右两侧的液晶相互挤压而出现不连续线的技术问题。

Description

一种像素电极及液晶显示面板 本申请要求于 2011年 7月 18日提交中国专利局、 申请号为 201110200370.6、 发明名称为 "一种像素电极及液晶显示面板" 的中国专利申请的优先权， 其全 部内容通过引用结合在本申请中。 技术领域
本发明涉及液晶显示技术领域， 尤其涉及一种像素电极及液晶显示面板。 背景技术
液晶显示器已经逐渐成为各种电子设备如移动电话、 个人数字助理 ( Personal Digital Assistant, PDA), 数字相机、 计算机屏幕或笔记本计算机屏幕 所广泛应用的显示器件。 液晶显示器包括背光模块以及液晶显示面板， 液晶显 示面板是由两基板以及填充于两基板之间的液晶层所构成。 液晶显示面板的制 造工艺多种多样， 目前常见的是高分子安定化垂直配向 （Ploymer Stabilized Vertical Alignment, PSVA ) 的液晶显示面板。
如图 1所示， 图 1是现有技术中 PSVA模式液晶显示面板的结构示意图。 通常的 PSVA模式的液晶显示面板的像素电极设计为 "米" 字型， 由条状的竖 直主干 20、条状的水平主干 10及与 X轴夹角为 ± 45度， ± 135度的条状分支（ slit ) 30三部分组成。 其中竖直主干 10和水平主干 20将像素 （pixel ) 面积平均分成 4个区域（domain ), 每个区域都由斜向 45度的条状分支 30平铺组成。 图 1所 示的是关于上下和左右分别镜像对称的 "米" 字型的电极设计。
图 2是对图 1所示的像素电极施加一定电压（0 ~ 4V )后的液晶倒向的示意 图， 如图 2所示， 通常所采用的 "米" 字型的电极设计在通电的情况下， 液晶 的倒向是由像素电极外侧开始逐渐向像素电极内侧倾倒， 倾倒的角度是沿条状 分支（slit )方向， 4个区域的液晶倾倒方向与水平主干 10的夹角分别为 ± 45度， ± 135度， 都指向像素的中央区域。 如图 2所示， 液晶倒向与水平主干 （X轴） 的夹角为： 第一象限 -135度， 第二象限 -45度， 第三象限 45度， 第四象限 135 度。
由于现有设计十分依赖于中间的竖直主干和水平主干， 而这两个主干是不 透光的区域， 因为这两个主干内的液晶倒向沿主干方向， 分别与水平主干夹角 为 0度和 90度， 而上下偏光片分别设定为与该水平主干夹角 0度和 90度， 因 此由一般的 VA液晶的穿透率公式可以计算出此区域的穿透率为 0, 导致开口率 降低； 由于这两个主干内的液晶指向与水平主干夹角为 0度和 90度， 与条状分 支出的指向不同， 导致容易出现不连续线， 即， 像素中心靠近竖直主干处左右 两侧的液晶相互挤压而出现不连续线， 影响了液晶的效率。 发明内容
本发明提供一种像素电极以及包括所述像素电极的液晶显示面板， 可以有 效的解决现有技术中像素中心靠近竖直主干处左右两侧的液晶相互挤压而出现 不连续线， 影响液晶效率的技术问题。
为了解决上述技术问题， 本发明提供一种像素电极， 所述像素电极包括垂 直相交的条状的水平主干和条状的竖直主干， 所述水平主干与所述竖直主干的 交点为所述水平主干的中心点及所述竖直主干的中心点的重合； 由所述水平主 干与所述竖直主干垂直相交所均分而成的四个像素区域中， 每个所述像素区域 具有多个平铺的条状分支， 所述每个像素区域中的多个条状分支相对于所述水 平主干以相同的夹角向外延伸， 所述多个条状分支两两之间具有间隔， 所述条 状分支与所述水平主干或所述竖直主干的连接部分的宽度小于所述条状分支的 主体部分的宽度。
优选的， 所述条状分支的连接部分为宽度沿所述条状分支的向中心延伸方 向逐渐减小的多边形。
优选的， 所述多边形为四边形， 所述四边形与所述水平主干或所述竖直主 干的连接处的宽度小于与所述主体部分连接处的宽度。
优选的， 不同条状分支的连接部分大小不同或相同。
优选的， 所述多个条状分支分别与所述水平主干和所述竖直主干的夹角均 为 45度， 且各个所述像素区域中的多个条状分支平行分布。
优选的， 各个所述像素区域中的多个条状两两之间的间隔是相同的。
优选的， 各个所述像素区域中的多个条状两两之间的间隔是不同的。
优选的， 所述由所述水平主干与所述竖直主干垂直相交所均分而成的四个 像素区域上下和左右分别镜像对称。 优选的， 所述像素电极整体呈 "米" 字型。
相应的， 本发明实施例还提供了一种液晶显示面板， 包括如上所述的像素 电极。
实施本发明的实施例， 具有如下有益效果：
通过设计条状分支与水平主干或竖直主干相交的一端的宽度小于该条状分 支的宽度， 即， 设计条状分支靠近主干出的一端变细， 使得该处的液晶可以得 到较好的倒向， 不容易出现反方向的挤压， 从而有助于抑制像素中央不连续线 的出现， 有效的解决现有技术中像素中心靠近竖直主干处左右两侧的液晶相互 挤压而出现不连续线， 影响液晶效率的技术问题， 提高了液晶效率。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付 出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1是现有技术中 PSVA模式液晶显示面板的结构示意图；
图 2是在如图 1所示的像素电极上施加电压后的液晶倒向示意图； 图 3是本发明实施例的像素电极的平面结构示意图；
图 4是图 3虚线部分的放大结构示意图；
图 5是本发明实施例的液晶显示面板的平面结构示意图。 具体实施方式
液晶显示器包括背光模块以及液晶显示面板， 液晶显示面板是由相对设置 的第一基板和第二基板以及填充于该两基板之间的液晶层所构成， 第二基板上 的显示区域包含多个像素区域， 其内设置有薄膜晶体管以及像素电极， 本发明 针对现有技术的像素电极中像素中心靠近竖直主干处左右两侧的液晶相互挤压 而出现不连续线， 影响液晶效率的问题， 提供了一种新型的像素电极以及包含 所述像素电极的液晶显示面板， 可以有效地解决该问题。
如图 3示出的本发明实施例的像素电极的平面结构示意图， 像素电极 6包 括垂直相交的条状的水平主干 62和条状的竖直主干 64, 水平主干 62与竖直主 干 64的交点为水平主干 62的中心点及竖直主干 64的中心点的重合； 由水平主 干 62与竖直主干 64垂直相交所均分而成的四个像素区域中， 每个像素区域具 有多个平铺的条状分支 66,每个像素区域中的多个条状分支 66相对于水平主干 62以相同的夹角向外延伸， 所述多个条状分支 66两两之间具有间隔， 条状分支 66与水平主干 62或竖直主干 64的连接部分 661的宽度小于条状分支 66的主体 部分的宽度。
具体地， 如图 4所示的图 3虚线部分的放大结构示意图， 条状分支 66与水 平主干 62或竖直主干 64的连接部分 661 , 即条状分支 66靠近主干的一端 661 , 为宽度沿所述条状分支 66的向中心延伸方向逐渐减小的多边形， 如为四边形， 所述四边形与所述水平主干或所述竖直主干的连接处的宽度小于与所述主体部 分连接处的宽度， 当然也可以是其他的多边形。
需要说明的是， 图 3和图 4只是本发明的其中一个实施例， 本发明实施例 中条状分支 66与水平主干 62或竖直主干 64的连接部分 661包括但不限于上述 的四边形结构， 可以为任意的多边形， 如为三角形、 菱形、 矩形、 正方形、 六 边形等， 只要起到减 d、条状分支的连接部分的效果即可。
进一步地， 不同条状分支的连接部分大小可以不同或相同。 各个所述像素 区域中的多个条状两两之间的间隔也可以相同或不同。
需要说明的是， 本发明实施例中的像素电极的材料包括但不限于氧化铟锡 ( ITO )或氧化铟锌或非晶氧化铟锡等等。 下面以像素电极的材料是 ITO为例进 行说明， 即图 3和图 4中的水平主干 62、 竖直主干 64以及条状分支 66都属于 ITO构成的区域， 在 ITO构成的区域中， 液晶在施加电压的情况下会沿着画素 电极（条状分支） 的方向向像素 （pixel ) 内侧倾倒， 即向中心侧倾倒， 由于条 状分支 66与水平主干 62或竖直主干 64相交的一端的宽度小于条状分支 66的 宽度， 即， 靠近主干处的分支变细， 该处的液晶可以得到较好的倒向， 不容易 出现反方向的挤压， 从而有助于抑制像素中央不连续线的出现， 因而有效的解 决现有技术中像素中心靠近竖直主干处左右两侧的液晶相互挤压而出现不连续 线， 影响液晶效率的技术问题， 提高了液晶效率。
每个像素区域中平铺的多个条状分支 66相对于水平主干 62的夹角包括但 不限于 45度， 图 3和图 4以该夹角为 45度为例；
进一步地， 如图 3所示， 由水平主干 62与竖直主干 64垂直相交所均分而 成的四个区域上下和左右分别镜像对称，即，水平主干 62两侧的区域镜像对称， 竖直主干 64两侧的区域镜像对称； 像素电极 6整体呈 "米" 字型。
本发明实施例的像素电极可应用于 PSVA液晶显示面板、扭转向列（ Twisted Nematic, TN )液晶显示面板、 或是图案垂直排列 ( Pattern Vertical Alignment, PVA )液晶显示面板等。
如图 5 示出的本发明实施例的液晶显示面板的平面结构示意图， 液晶显示 面板 8包括本发明实施例中的像素电极 6,关于像素电极 6的结构描述可参见上 述关于像素电极 6 的实施例， 这里不再贅述。 需要说明的是， 液晶显示面板 8 还包括数据线、 扫描线以及开关单元等等。
综上所述， 通过设计条状分支与水平主干或竖直主干相交的一端的宽度小 于该条状分支的宽度， 即， 设计条状分支靠近主干出的一端变细， 使得该处的 液晶可以得到较好的倒向， 不容易出现反方向的挤压， 从而有助于抑制像素中 央不连续线的出现， 有效的解决现有技术中像素中心靠近竖直主干处左右两侧 的液晶相互挤压而出现不连续线， 影响液晶效率的技术问题， 提高了液晶效率。
虽然本发明已以较佳实施例揭露如上， 但该较佳实施例并非用以限制本发 明， 该领域的普通技术人员， 在不脱离本发明的精神和范围内， 均可作各种更 动与润饰， 因此本发明的保护范围以权利要求界定的范围为准。
以上所述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， 在不脱离本发明原理的前提下， 还可以做出若干改进和润饰， 这 些改进和润饰也视为本发明的保护范围。

Claims

权 利 要 求
1、 一种像素电极， 其特征在于， 所述像素电极包括垂直相交的条状的水平 主干和条状的竖直主干， 所述水平主干与所述竖直主干的交点为所述水平主干 的中心点及所述竖直主干的中心点的重合； 由所述水平主干与所述竖直主干垂 直相交所均分而成的四个像素区域中， 每个所述像素区域具有多个平铺的条状 分支， 所述每个像素区域中的多个条状分支相对于所述水平主干以相同的夹角 向外延伸， 所述多个条状分支两两之间具有间隔， 所述条状分支与所述水平主 干或所述竖直主干的连接部分的宽度小于所述条状分支的主体部分的宽度。
2、 如权利要求 1所述的像素电极， 其特征在于， 所述条状分支的连接部分 为宽度沿所述条状分支的向中心延伸方向逐渐减小的多边形。
3、 如权利要求 2所述的像素电极， 其特征在于， 所述多边形为四边形， 所 述四边形与所述水平主干或所述竖直主干的连接处的宽度小于与所述主体部分 连接处的宽度。
4、 如权利要求 1至 3中任一项所述的像素电极， 其特征在于， 不同条状分 支的连接部分大小不同或相同。
5、 如权利要求 1至 3中任一项所述的像素电极， 其特征在于， 所述多个条 状分支分别与所述水平主干和所述竖直主干的夹角均为 45度， 且各个所述像素 区域中的多个条状分支平行分布。
6、 如权利要求 5所述的像素电极， 其特征在于， 各个所述像素区域中的多 个条状两两之间的间隔是相同的。
7、 如权利要求 5所述的像素电极， 其特征在于， 各个所述像素区域中的多 个条状两两之间的间隔是不同的。
8、 如权利要求 1所述的像素电极， 其特征在于， 所述由所述水平主干与所 述竖直主干垂直相交所均分而成的四个像素区域上下和左右分别镜像对称。
9、 如权利要求 8所述的像素电极， 其特征在于， 所述像素电极整体呈 "米" 字型。
10、 一种液晶显示面板， 其特征在于， 所述液晶显示面板包括如权利要求 1 至 9任意一项所述的像素电极。
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