WO2012162990A1 - 像素电极和液晶显示阵列基板 - Google Patents

像素电极和液晶显示阵列基板 Download PDF

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Publication number
WO2012162990A1
WO2012162990A1 PCT/CN2011/080349 CN2011080349W WO2012162990A1 WO 2012162990 A1 WO2012162990 A1 WO 2012162990A1 CN 2011080349 W CN2011080349 W CN 2011080349W WO 2012162990 A1 WO2012162990 A1 WO 2012162990A1
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Prior art keywords
strip
branches
pixel electrode
branch
staggered
Prior art date
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Ceased
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PCT/CN2011/080349
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English (en)
French (fr)
Inventor
张鑫
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Shanghai Tianma Microelectronics Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Shanghai Tianma Microelectronics Co Ltd
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Priority to US13/381,887 priority Critical patent/US20120307190A1/en
Publication of WO2012162990A1 publication Critical patent/WO2012162990A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/1337—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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134336—Matrix
    • 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
    • G02F1/133757—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 with different alignment orientations
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/40—Arrangements for improving the aperture ratio

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 array substrate.
  • a liquid crystal display is one of the most widely used flat panel displays, and the LCD includes a pair of panels provided with field generating electrodes such as pixel electrodes and common electrodes, and a liquid crystal (LC) disposed between the two panels.
  • field generating electrodes such as pixel electrodes and common electrodes
  • LC liquid crystal
  • the LCD displays an image when the polarization of light incident on the liquid crystal layer is adjusted.
  • PSVA Polymer Stabilized Vertical Alignment
  • the liquid crystal display device generally includes a backlight module, oppositely disposed first and second substrates, and a liquid crystal layer filling between the two substrates.
  • a pixel electrode (or a pixel electrode) is disposed in the second substrate.
  • FIG. 1 is a schematic diagram showing the structure of a unit pixel electrode in the liquid crystal display panel 100 of the prior art. As shown in FIG. 1, the liquid crystal display panel has a data line DL, a scan line SL, a thin film transistor 114, and a pixel electrode 110.
  • the pixel electrode 110 is located in the pixel area and is a "snow-flake like" font layout.
  • the pixel electrode 110 includes a central vertical main trunk 111, a central horizontal trunk 112, and an X.
  • the angle of the shaft is ⁇ 45 degrees
  • the branch portion 113 of ⁇ 135 degrees is three parts.
  • the vertical trunk 111 and the horizontal trunk 112 divide the area of one pixel into four regions, and each region is obliquely It is composed of a 45-degree branch portion 113.
  • Each strip is located on the same plane as the vertical trunk and the horizontal trunk.
  • the vertical trunk and the horizontal trunk center intersect perpendicularly, the so-called center perpendicularly intersects, that is, the vertical trunk and the horizontal trunk are perpendicular to each other, and the region near the center of the vertical intersection is the central region of the unit pixel electrode, the vertical trunk and The horizontal trunk divides the entire pixel area equally into four regions, each of which is composed of strip branches that are at an angle to the vertical stem or horizontal stem.
  • the electrode design of the "meter" shape which is mirror-symmetrical to the top, bottom, left and right is formed as shown in Fig. 1.
  • the partial branch of the branch portion 113 is electrically connected to the transistor 114 to transfer the voltage from the scan line SL to the pixel electrode 110.
  • the liquid crystal reversal in the cross section taken along the line A-B-C in Fig. 1 can be referred to.
  • Fig. 2 is a view showing the liquid crystal tilting obtained after a certain voltage (about 0 to 4 V, an arrow indicates an applied voltage) is applied to the pixel electrode structure shown in Fig. 1.
  • a certain voltage about 0 to 4 V, an arrow indicates an applied voltage
  • the liquid crystal tilting directions of the four regions are ⁇ 45 degrees and ⁇ 135 degrees, respectively, all pointing to the central area of the pixel.
  • the angle between the liquid crystal reversal and the X-axis (scanning line) in the four regions is: first quadrant -135 degrees, second quadrant -45 degrees, third quadrant 45 degrees, fourth quadrant 135 degrees.
  • a reversed view of the liquid crystal in the cross section taken along the line A-B-C of Fig. 1 is shown.
  • the angle at which the liquid crystal is poured is poured from the outside to the inside, and the direction thereof is directed to the inside of the pixel.
  • the pixel electrode 110 is very dependent on the intermediate vertical trunk 111 and the horizontal trunk 112, and the trunks 111, 112 are substantially opaque regions, because the liquid crystal in the trunk 111/112 is reversed along the edge.
  • the main direction which is respectively 0 and 90 degrees from the X-axis, and the upper and lower polarizers are set to be 0 degrees and 90 degrees from the X-axis, respectively. Therefore, the penetration rate formula can be used to know the wear of the main area. The penetration rate is zero.
  • the area occupied by the trunk area is large, such a design lowers the aperture ratio of the liquid crystal display panel.
  • a technical problem to be solved by embodiments of the present invention is to provide a pixel electrode and a liquid crystal display array.
  • Column substrate
  • An embodiment of the present invention provides a pixel electrode, where the pixel electrode includes four portions divided by a central region in a horizontal direction and a vertical direction, and the four portions respectively include a plurality of strip branches, wherein the plurality of strip branches are The strips that are adjacent to each other are separated by a slit, and the plurality of strip branches extend outward relative to the central region;
  • strip-like branches of the four portions adjacent to each other are connected to each other to form a staggered connecting portion extending in the vertical direction and a staggered connecting portion extending in the horizontal direction, and causing all the strip-like branches to be electrically connected to each other.
  • the embodiment of the present invention further provides a liquid crystal display array substrate, the liquid crystal display array substrate includes a plurality of pixel electrodes, and the pixel electrodes include:
  • a four-part divided by a central area in a horizontal direction and a vertical direction, the four parts respectively comprising a plurality of strip-shaped branches, wherein the adjacent strip-shaped branches of the plurality of strip-shaped branches are separated by a slit, a plurality of strip branches extending outward relative to the central region;
  • the strip-like branches adjacent to each other at the four portions are connected to each other to form a staggered connecting portion extending in the vertical direction and a staggered connecting portion extending in the horizontal direction, and causing all the strip-like branches to be electrically connected to each other.
  • strip branches in the above embodiments may have an angle of 45 degrees with respect to the horizontal and vertical directions of the cross.
  • the other strip-like branches extending to the central region are satisfied, and the ends of the left-hand branch and the right side are a non-terminal connection of a strip of branches, the end of the strip of the right side being connected to the non-end of the other strip of the left side;
  • the other horizontal strips extending to the central region are satisfied, and the ends of the upper one and the lower side are The non-end of the branch is connected, and the end of the lower branch is connected to the non-end of the other strip on the upper side.
  • the staggered width of the staggered connections between the strip branches is greater than or equal to the width of the branches. Further, the staggered widths of the staggered branches are the same or different.
  • the pixel electrode further includes an electrode ring that surrounds the four portions and is connected to each of the strip branches.
  • the liquid crystal panel mode is a vertical alignment mode.
  • the material of the pixel electrode in the pixel electrode structure is indium tin oxide or indium zinc oxide or amorphous indium tin oxide.
  • the main trunk in the existing pixel electrode structure is removed, and the strip branches are connected in the central region by alternate arrangement. Since there is no design of the intermediate trunk, the area of the central "ten" black area will become smaller, so that a higher aperture ratio can be obtained, and the occurrence of discontinuous lines can be suppressed.
  • FIG. 1 is a schematic structural view of a unit pixel electrode in a PSVA mode LCD in the prior art
  • FIG. 2 is a schematic diagram of a liquid crystal reverse direction after a voltage is applied to a pixel electrode as shown in FIG.
  • Figure 3 is a reversed view of the liquid crystal in the cross section of the broken line shown in Figure 1;
  • Figure 4 is a schematic diagram of the discontinuous line caused by the intermediate trunk in the simulation result
  • Figure 5 is a schematic view of a discontinuous line due to an intermediate trunk in a micrograph of an experimental product manufactured according to the prior art
  • FIG. 6 is a schematic structural view of a first embodiment of a pixel electrode of the present invention.
  • Figure 7 is a detailed view of the pixel electrode of Figure 6;
  • FIG. 8 is a schematic structural view showing a second embodiment of a pixel electrode of the present invention.
  • Figure 9 is a schematic view showing the structure of a third embodiment of the pixel electrode of the present invention.
  • the pixel electrode design of the prior art PSVA is a "m"-shaped structure, that is, the shaded area (the area having indium tin oxide ITO) shown in FIG. 1 is "meter,”, and the liquid crystal is applied with a voltage. It will be tilted toward the inside of the pixel electrode along the direction of the stripe of the pixel electrode. Therefore, there is a horizontal and vertical two trunks in the middle of the pixel electrode, which belong to the non-opening area, and this area occupies a large area (the whole pixel) They are all filled with liquid crystal, regardless of the light transmission area or the non-light transmission area. The difference is that the liquid crystals are reversed after the voltage is applied.
  • the main trunk is removed, and the slits are connected in the central region by alternate arrangement.
  • the central region of the pixel electrode may not be strictly arranged vertically and evenly, as long as Make sure that all the branches are connected to each other. Since there is no design of the intermediate trunk, the area of the central "ten" black area will become small, so that a higher opening rate can be obtained and the occurrence of discontinuous lines can be suppressed.
  • the pixel electrode includes four portions divided by a central region in a horizontal direction and a vertical direction (A, B, C, and D as shown). Four regions), the four portions respectively include a plurality of strip branches, wherein the strip branches adjacent to each other are separated by a slit, and the plurality of strip branches are opposite to the strip
  • the central area extends outward.
  • the strip 3 in Fig. 6 is spaced apart from the strip below it by a slit 4.
  • the strip branches inside the respective portions of the four portions A, B, C, and D may be parallel to each other, and the strip branches are at an angle of 45 degrees with respect to the horizontal direction and the vertical direction, respectively.
  • it can be at other angles; for example, in the B region, the strip 3 is at an angle of 30 degrees to the horizontal direction, and in the A region, the strip 3 is at an angle of 150 degrees to the horizontal direction, such that the A region and the B region
  • the strip branches can be symmetrical along the vertical direction passing through the center point 0.
  • the direction of the strip branches of the C area and the D area can be set correspondingly, so that the A area and the C area, the B area, and the D area pass along the center point 0.
  • the horizontal direction is symmetrical, and the strip branches of the C area and the C area are symmetrical along the vertical direction passing through the center point 0.
  • the strips inside the respective portions of the four portions A, B, C, and D may also be non-parallel. That is, there is a certain angle between adjacent strip branches in the same portion, and the angle can be determined according to the design needs or the actual production process.
  • strip-like branches of the four portions adjacent to each other are connected to each other to form a staggered connecting portion extending in the vertical direction and a staggered connecting portion extending in the horizontal direction, and causing all the strip-like branches to be electrically connected to each other.
  • the staggered connection portion in the vertical direction except for the strip-shaped branches at the uppermost end and the lowermost end, the other strip-like branches extending to the central region are satisfied, and the ends of the left-hand branch are right and right. a non-terminal connection of the side of the strip, the end of the strip of the right side being connected to the non-end of the other strip of the left side;
  • the staggered connection portion in the horizontal direction except for the leftmost and rightmost strip branches, the other horizontal strips extending to the central region are satisfied, and the ends of the upper one and the lower side are The non-end of the branch is connected, and the end of the lower branch is connected to the non-end of the other strip on the upper side.
  • " in the cross-shaped structure formed by the staggered connection portion in the horizontal direction and the staggered connection portion in the vertical direction is alternately formed “y” between the left and right strips.
  • the glyphs are arranged and connected, and the "" of the previous "y” character is on the “ ⁇ ” of the next "y” character, and the cross-shaped "one” glyph is interlaced between the left and right strips.
  • the "y"-shaped arrangement after the rotation of 90 degrees is formed so that all the strip branches are electrically connected to each other.
  • Fig. 6 it is a detailed view of the pixel electrode in the liquid crystal panel of Fig. 6.
  • the strip branch 5 of the B region is located at the upper right of the strip branch 6 of the A region, but In other embodiments of the present invention, it may also be as shown in FIG. 8.
  • the strip branch 5 of the B area is located at the lower right of the strip branch 6 of the A area.
  • the strip branches may not be at an angle of 45 degrees between the staggered strip branches as shown in Figs. 7 and 8, or may be other angles.
  • the interleave width d between the strip branches 3 can be variously arranged (at the same strip branch, the corresponding interleave width d is equal to the corresponding slit 4 as shown in FIG. Width), for example, the staggered width of the staggered connections between the strip branches is greater than or equal to the width of the strip branches.
  • the interlaced widths of the staggered connections between the strip branches are the same or different.
  • the staggered width may also be set according to the varying strip branch pitch. The flexibility of this staggered width is related to the gap between adjacent strip branches. Depending on the actual design requirements and the needs of the production process, the gap between adjacent strip branches and the width of the strip branches, and different adjacent The gaps between the strips can have different proportional relationships, so the staggered width can be adjusted accordingly.
  • all strip branches have the same width.
  • different strip branches may have different widths, and the width of the strips may be different, for example, Strip-shaped branches of the fan shape.
  • FIG. 9 is a schematic structural view of a third embodiment of a pixel electrode in the present invention. Different from the foregoing two embodiments, in this example, a circle is surrounded by the strip electrodes at the periphery of the strip electrodes. The connected electrode, the thin film transistor is connected to the partial electrode. This structure makes the overall structure of the pixel electrode more stable and has better conduction performance.
  • the above liquid crystal panel mode may be a polymer stabilized vertical alignment PSVA mode.
  • the material of the pixel electrode in the above pixel electrode structure may be indium tin oxide or indium zinc oxide or amorphous indium tin oxide.
  • an embodiment of the present invention further provides a liquid crystal display array substrate including a plurality of pixel electrodes as described above.
  • the main trunk in the existing pixel electrode is removed, and the slits are connected in the central region by alternate arrangement. Since there is no intermediate trunk design, the area of the central "ten" word black area will become smaller, so that a higher aperture ratio can be obtained, and the occurrence of discontinuous lines can be suppressed.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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  • Spectroscopy & Molecular Physics (AREA)
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Abstract

一种像素电极，包括由中心区域沿水平方向和垂直方向划分的四部分，所述四部分分别包括多个条状分支（3），所述多个条状分支(3)中互为相邻的条状分支（3）是以缝隙（4）隔开，所述多个条状分支（3）相对于所述中心区域向外延伸；其中，所述四部分相互邻接处的条状分支（3）相互连接，形成沿垂直方向延伸的交错连接部和沿水平方向的延伸的交错连接部，并使得所有的条状分支（3）相互导通。同时，使用该像素电极的液晶显示阵列基板也被提及。使用该像素电极能够去除像素电极结构中的主干部分，从而提高开口率；像素电极中四部分相互邻接处的条状分支（3）通过交替排列的方式，能够有效抑制该位置处"黑紋"现象。

Description

像素电极和液晶显示阵列基板 本申请要求于 2011年 6月 3 日提交中国专利局、申请号为 201110148719.6、 发明名称为 "像素电极和液晶显示阵列基板" 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和液晶显示阵列基 板。
背景技术
液晶显示（ Liquid Crystal Display, LCD ) 器是最广泛使用的平板显示器之 一， LCD 包括设置有场发生电极诸如像素电极和公共电极的一对面板以及设置 在两个面板之间的液晶 (LC)层。 当电压被施加到场发生电极从而在 LC层中产生 电场， 该电场决定了液晶层中的 LC分子的取向， 因此而调整入射到液晶层的光 的偏振时， LCD显示图像。
目前业界发展出一种称为高分子安定化垂直配向 (Polymer Stabilized Vertical Alignment, PSVA)的技术， 该技术是在液晶材料中掺入适当浓度的单体化合物 (monomer)并且震荡均匀。 接着， 将混合后的液晶材料置于加热器上加温到达等 向性 (Isotropy)状态。 当液晶混合物降至室温时， 液晶混合物会回到向列型 (nematic)状态。 然后， 将液晶混合物注入至液晶盒并施与电压。 当施加电压使液 晶分子排列稳定时， 则使用紫外光或加热的方式让单体化合物进行聚合反应已 成聚合物层， 由此达到稳定配向的目的。
液晶显示装置通常包括背光模块、 相对设置的第一基板和第二基板、 以及 填充两基板之间的液晶层。 在第二基板内设置有像素电极（或称为画素电极）。 如图 1所示， 为现有技术中液晶显示面板 100中一单位像素电极结构示意图。 如图 1所示， 液晶显示面板具有数据线 DL、 扫描线 SL、 薄膜晶体管 114以及 像素电极 110。 像素电极 110位于像素区域内， 为一 "米" (snow-flake like)字型 的图案 (layout), 像素电极 110包含中央垂直的主干（main trunk ) 111、 中央水平 的主干 112、 以及与 X轴夹角为 ± 45度， ± 135度的分支部 113三部分。 其中垂 直主干 111和水平主干 112将一像素的面积平均分成 4个区域，每个区域都由斜 向 45度的分支部 113平铺组成。
各条状分支与竖直主干和水平主干位于同一平面上。 其中竖直主干和水平 主干中心垂直相交， 所谓的中心垂直相交， 即指竖直主干和水平主干相互垂直， 垂直相交的中心附近的区域即为该单位像素电极的中心区域， 该竖直主干和水 平主干将整个像素面积平均分成 4个区域， 每个区域都由与竖直主干或水平主 干呈一定角度的条状分支平铺组成。 如此形成图 1 所示的关于上下和左右分别 镜像对称的 "米" 字型的电极设计。 其中， 分支部 113 的部分分支电性连接至 晶体管 114,以将来自于扫描线 SL之电压传递至像素电极 110上。图 1中沿 A-B-C 虚线所截的横截面内的液晶倒向情况可参考图 3。
图 2是显示在图 1所示像素电极结构上施加一定电压（大约为 0〜4V, 箭头 表示有施加电压）后所得到的液晶倾倒的示意图。 如图 2所示， 当米字型的像 素电极 110在通电的情况下， 液晶的倒向是由像素电极 110的外侧开始逐渐向 内侧倾倒， 且其倾倒的角度是沿分支部的延伸方向， 4个区域的液晶倾倒方向分 别为 ± 45度， ± 135度，都指向像素的中央区域。四个区域中液晶倒向与 X轴 (扫 描线)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。
如图 3所示， 显示图 1沿 A-B-C虚线所截的横截面内的液晶倒向示意图。 如图 3所示， 在图 1虚线位置上的横截面内 （垂直于纸面的横截面）， 液晶倾倒 的角度是由外侧向内侧倾倒， 其方向指向像素的内部。
在现有技术中， 像素电极 110十分依赖于中间的垂直主干 111与水平主干 112, 而主干 111、 112基本上是不透光的区域， 这是由于主干 111/112内的液晶 倒向是沿主干方向， 其分别与 X轴夹 0度和 90度角， 而上下偏光片分别设定为 与 X轴夹角 0度和 90度， 因此， 由穿透率公式便可得知主干区域的穿透率为 0。 此外， 由于主干区域所占面积很大， 因此这样的设计， 会降低液晶显示面板的 开口率。
此外由于主干处的液晶指向与 X轴夹角 0度和 90度，与分支处的指向不同， 于是容易出现不连续线 （ disclination line ), 如图 4和图 5 中所示。 其中， 图 4 是模拟结果， 图 5是实验产品的显微镜照片。
发明内容
本发明实施例所要解决的技术问题在于， 提供一种像素电极和液晶显示阵 列基板。
本发明实施例提供了一种像素电极， 所述像素电极包括由中心区域沿水平 方向和垂直方向划分的四部分， 所述四部分分别包括多个条状分支， 所述多个 条状分支中互为相邻的条状分支是以缝隙隔开， 所述多个条状分支相对于所述 中心区域向外延伸；
其中， 所述四部分相互邻接处的条状分支相互连接， 形成沿垂直方向延伸 的交错连接部和沿水平方向的延伸的交错连接部， 并使得所有的条状分支相互 导通。
相应的， 本发明实施例还提供了一种液晶显示阵列基板， 所述液晶显示阵 列基板包括多个像素电极， 所述像素电极包括：
由中心区域沿水平方向和垂直方向划分的四部分， 所述四部分分别包括多 个条状分支， 所述多个条状分支中互为相邻的条状分支是以缝隙隔开， 所述多 个条状分支相对于所述中心区域向外延伸；
其中， 所述四部分相互邻接处的条状分支的相互连接， 形成沿垂直方向延 伸的交错连接部和沿水平方向的延伸的交错连接部， 并使得所有的条状分支相 互导通。
其中， 在上述各实施例中的条状分支与十字形的水平和垂直方向可成 45度 角。
在沿垂直方向的交错连接部中， 除最上端和最下端的条状分支外， 其他的 延伸至中心区域的垂直方向的条状分支均满足， 左侧的一条状分支的末端与右 侧的一条状分支的非末端连接， 所述右侧的一条状分支的末端与左侧的另一条 状分支的非末端连接；
在沿水平方面的交错连接部中， 除最左端和最右端的条状分支外， 其他的 延伸至中心区域的水平方向的条状分支均满足， 上侧的一条状分支的末端与下 侧的一条状分支的非末端连接， 所述下侧的一条状分支的末端与上侧的另一条 状分支的非末端连接。
所述条状分支之间交错排列连接的交错宽度大于等于所述分支的宽度。 进一步的， 所述条状分支之间交错排列连接的交错宽度相同或不同。
所述像素电极还包括环绕所述四个部分并与各条状分支连接的电极圈。 所述液晶面板模式为垂直配向模式。 所述像素电极结构中的像素电极的材料为氧化铟锡或氧化铟锌或非晶氧化 铟锡。
采用本发明实施例， 将现有的像素电极结构中的主干（main trunk )去除了， 使条状分支（slit )通过交替排列在中心区域相连。 由于没有中间主干的设计， 中心 "十"字黑区的面积会变的 [艮小， 从而可以得到较高的开口率， 并可抑制不 连续线的出现。
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 LCD中一单位像素电极结构示意图； 图 2是如图 1所示的像素电极上施加电压后的液晶倒向示意图；
图 3是图 1中所示虚线的所截横截面内的液晶倒向示意图；
图 4是模拟结果中由于中间主干引起的不连续线示意图；
图 5是按照现有技术制造的实验产品的显微镜照片中由于中间主干引起的 不连续线示意图；
图 6是本发明像素电极第一实施例的结构示意图；
图 7是图 6中的像素电极的细部示意图；
图 8是本发明像素电极第二实施例的细部结构示意图；
图 9是本发明像素电极第三实施例的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作出创造 性劳动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。
现有技术的 PSVA的像素电极设计是"米"字型的结构， 即图 1所示的阴影 区 （有氧化铟锡 ITO的区域） 呈"米，，字型， 液晶在施加电压的情形下会沿着像 素电极条纹的方向向像素电极内侧倾倒。 所以在像素电极的中间需要有一水平 一竖直的两个主干， 属于非开口区， 而且这个区域所占面积很大（整个像素内 都充满了液晶， 不论透光区还是非透光区， 区别在于加电压之后的液晶倒向不 同。
而在本发明实施例中的像素电极中将主干 （main trunk )去掉， 分支（slit ) 通过交替排列而在中心区域相连， 当然， 在像素电极的中心区域可以不是严格 的上下均匀交替排列， 只要保证所有的分支（slit )都相互导通就可以。 由于没 有中间主干的设计， 中心"十"字黑区的面积会变的很小，从而可以得到较高的开 口率， 并且抑制不连续线的出现。
如图 6所示， 为本发明像素电极的第一实施例的结构图， 该像素电极包括 由中心区域沿水平方向和垂直方向划分的四部分（如图所示的 A、 B、 C、 D四 个区域）， 所述四部分分别包括多个条状分支， 所述多个条状分支中互为相邻的 条状分支是以缝隙隔开， 所述多个条状分支相对于所述中心区域向外延伸。 如， 图 6中的条状分支 3与其下方的条状分支之间间隔有缝隙 4。
在图 6的示例中， A、 B、 C、 D四个部分的各部分内部的条状分支之间可 以是相互平行的， 同时这些条状分支分别与水平方向和垂直方向成 45度角， 当 然也可以成其他角度； 例如在 B区域内， 条状分支 3与水平方向呈 30度角， 则 在 A区域内， 条状分支 3与水平方向呈 150度角， 这样 A区域和 B区域的条状 分支可沿通过中心点 0的垂直方向保持对称， 同理可以相应的设置 C区域和 D 区域的条状分支的方向， 使得 A区域和 C区域、 B区域和 D区域沿通过中心点 0的水平方向对称， C区域和 C区域的条状分支沿通过中心点 0的垂直方向保 持对称。
另夕卜， A、 B、 C、 D 四个部分的各部分内部的条状分支之间也可以是不平 行的。 即同一部分内的相邻的条状分支之间有一定的角度， 这个角度的大小可 以根据设计的需要或实际的生产工艺来确定。
其中， 所述四部分相互邻接处的条状分支相互连接， 形成沿垂直方向延伸 的交错连接部和沿水平方向的延伸的交错连接部， 并使得所有的条状分支相互 导通。
比如， 在沿垂直方向的交错连接部中， 除最上端和最下端的条状分支外， 其他的延伸至中心区域的垂直方向的条状分支均满足， 左侧的一条状分支的末 端与右侧的一条状分支的非末端连接， 所述右侧的一条状分支的末端与左侧的 另一条状分支的非末端连接； 在沿水平方面的交错连接部中， 除最左端和最右端的条状分支外， 其他的 延伸至中心区域的水平方向的条状分支均满足， 上侧的一条状分支的末端与下 侧的一条状分支的非末端连接， 所述下侧的一条状分支的末端与上侧的另一条 状分支的非末端连接。
即， 如图 6所示， 由水平方向的交错连接部和垂直方向的交错连接部形成 的十字形结构中的 "|" 字形处左右两侧条状分支之间一上一下交错形成 "y" 字 形排列连接， 且上一个 "y" 字的 " " 处于下一个 "y" 字的 "\" 上， 所述十 字形的 "一"字形处上下两侧条状分支之间一左一右交错形成旋转 90度后的 "y" 字形排列连接， 使得所有条状分支相互导通。
如图 Ί所示， 为图 6中的液晶面板中的像素电极的细部示意图。 在如图 6 和图 7所示的具体实施例中 ， A区域与 B区域的相交的 条状分支中， B区域 的条状分支 5处在 A区域的条状分支 6的右上方， 但是在本发明的其他实施例 中， 也可以 ^^过来的， 如图 8所示。 在图 8的示例中， B 区域的条状分支 5 处在 A区域的条状分支 6的右下方。 当然， 在本发明的其他实施例中， 条状分 支之间也可以不是如图 7、 8所示的交错的条状分支之间为 45度角， 也可以是 成其他的角度。
同时， 如图 7所示， 条状分支 3之间的交错宽度 d可以有多种设置（在相 同的条状分支处， 其对应的交错宽度 d即等于如图 6所示的对应的缝隙 4的宽 度），如，条状分支之间交错排列连接的交错宽度大于等于所述条状分支的宽度。 同时， 所述条状分支之间交错排列连接的交错宽度相同或不同， 比如， 若条状 分支之间的间距不同时， 该交错宽度也可以按照变化的条状分支间距进行设置。 这种交错宽度的灵活性选择与相邻条状分支间的间隙有关， 根据实际设计要求 和生产工艺的需要， 相邻条状分支间的间隙与条状分支的宽度之间、 以及不同 相邻条状分支间的间隙之间可以有不同的比例关系， 因而可相应的调整交错宽 度。
在图 6〜图 8的示例中， 所有的条状分支宽度均相同， 根据实际设计需要和 工艺要求， 不同的条状分支宽度可以不同， 同一条状分支本身的宽度也可以不 同， 如， 成扇形状的条状分支。
如图 9所示， 为本发明中的像素电极的第三实施例的结构示意图。 与前述 两个实施例相区别的是， 本例中， 在条状电极外围包围有一圈与各条状分支连 接的电极， 薄膜晶体管与该部分电极连接。 该结构使得像素电极的整体结构更 稳定， 导通性能更好。
且，上述的液晶面板模式可为高分子安定化垂直配向 PSVA模式。上述像素 电极结构中的像素电极的材料可为氧化铟锡或氧化铟锌或非晶氧化铟锡。
相应的， 本发明实施例还提供了一种液晶显示阵列基板， 其包括如上所述 的多个像素电极。
采用本发明实施例， 将现有的像素电极中的主干 （main trunk )去除了， 使 分支（slit )通过交替排列在中心区域相连。 由于没有中间主干的设计， 中心 "十" 字黑区的面积会变的艮小， 从而可以得到较高的开口率， 并可抑制不连续线的 出现。
以上所揭露的仅为本发明一种较佳实施例而已， 当然不能以此来限定本发 明之权利范围， 因此依本发明权利要求所作的等同变化， 仍属本发明所涵盖的 范围。

Claims

权 利 要 求
1、 一种像素电极， 其特征在于， 所述像素电极包括由中心区域沿水平方向 和垂直方向划分的四部分， 所述四部分分别包括多个条状分支， 所述多个条状 分支中互为相邻的条状分支是以缝隙隔开， 所述多个条状分支相对于所述中心 区域向外延伸；
其中， 所述四部分相互邻接处的条状分支相互连接， 形成沿垂直方向延伸 的交错连接部和沿水平方向延伸的交错连接部， 并使得所有的条状分支相互导 通。
2、 如权利要求 1所述的像素电极， 其特征在于， 所述条状分支与水平方向 和垂直方向均成 45度角。
3、 如权利要求 1所述的像素电极， 其特征在于， 在沿垂直方向的交错连接 部中， 除最上端和最下端的条状分支外， 其他的延伸至中心区域的垂直方向的 条状分支均满足， 左侧的一条状分支的末端与右侧的一条状分支的非末端连接， 所述右侧的一条状分支的末端与左侧的另一条状分支的非末端连接；
在沿水平方面的交错连接部中， 除最左端和最右端的条状分支外， 其他的 延伸至中心区域的水平方向的条状分支均满足， 上侧的一条状分支的末端与下 侧的一条状分支的非末端连接， 所述下侧的一条状分支的末端与上侧的另一条 状分支的非末端连接。
4、 如权利要求 1所述的像素电极， 其特征在于， 所述条状分支之间交错排 列连接的交错宽度大于等于所述分支的宽度。
5、 如权利要求 1所述的像素电极， 其特征在于， 所述条状分支之间交错排 列连接的交错宽度相同或各不同。
6、 如权利要求 1至 5中任一项所述的像素电极， 其特征在于， 所述像素电 极还包括环绕所述四个部分并与各条状分支连接的电极圈。
7、 如权利要求 1至 5中任一项所述的像素电极， 其特征在于， 液晶面板模 式为垂直配向模式。
8、 如权利要求 1至 5中任一项所述的像素电极， 其特征在于， 所述像素电 极结构中的像素电极的材料为氧化铟锡或氧化铟锌或非晶氧化铟锡。
9、 一种液晶显示阵列基板， 其特征在于， 所述液晶显示阵列基板包括多个 像素电极， 所述像素电极包括：
由中心区域沿水平方向和垂直方向划分的四部分， 所述四部分分别包括多 个条状分支， 所述多个条状分支中互为相邻的条状分支是以缝隙隔开， 所述多 个条状分支相对于所述中心区域向外延伸；
其中， 所述四部分相互邻接处的条状分支相互连接， 形成沿垂直方向延伸 的交错连接部和沿水平方向延伸的交错连接部， 并使得所有的条状分支相互导 通。
10、 如权利要求 9所述液晶显示阵列基板， 其特征在于， 所述条状分支与 水平方向和垂直方向均成 45度角。
11、 如权利要求 9 所述的液晶显示阵列基板， 其特征在于， 在沿垂直方向 的交错连接部中， 除最上端和最下端的条状分支外， 其他的延伸至中心区域的 垂直方向的条状分支均满足， 左侧的一条状分支的末端与右侧的一条状分支的 非末端连接， 所述右侧的一条状分支的末端与左侧的另一条状分支的非末端连 接；
在沿水平方面的交错连接部中， 除最左端和最右端的条状分支外， 其他的 延伸至中心区域的水平方向的条状分支均满足， 上侧的一条状分支的末端与下 侧的一条状分支的非末端连接， 所述下侧的一条状分支的末端与上侧的另一条 状分支的非末端连接。
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