WO2012171273A1 - 一种液晶显示面板及其像素电极 - Google Patents

一种液晶显示面板及其像素电极 Download PDF

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Publication number
WO2012171273A1
WO2012171273A1 PCT/CN2011/079127 CN2011079127W WO2012171273A1 WO 2012171273 A1 WO2012171273 A1 WO 2012171273A1 CN 2011079127 W CN2011079127 W CN 2011079127W WO 2012171273 A1 WO2012171273 A1 WO 2012171273A1
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WIPO (PCT)
Prior art keywords
frame
pixel electrode
liquid crystal
crystal display
display panel
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Ceased
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PCT/CN2011/079127
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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
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Shenzhen China Star Optoelectronics Technology Co Ltd
Shanghai Tianma Microelectronics Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Shanghai Tianma Microelectronics Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to DE112011105261.8T priority Critical patent/DE112011105261T5/de
Priority to US13/381,365 priority patent/US8610854B2/en
Publication of WO2012171273A1 publication Critical patent/WO2012171273A1/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
    • G02F1/1343—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
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a liquid crystal display panel and a pixel electrode. 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 comprises 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.
  • the manufacturing process of the liquid crystal display panel is various, and a liquid crystal display panel of a vertical alignment (VA) is currently common.
  • VA vertical alignment
  • FIG. 1 is a schematic view showing a structure of a VA mode liquid crystal display panel in the prior art.
  • the unit pixel electrode structure 1 of the liquid crystal display panel has a data line DL, a scanning line SL, a thin film transistor 114, and a pixel electrode (not shown).
  • the pixel electrode is located in the pixel area and is a "snow-flake like" type of pattern.
  • the pixel electrode includes a central vertical main trunk 111, a central horizontal trunk 112, and a x-axis clip.
  • the branch electrode 113 having an angle of ⁇ 45 degrees and ⁇ 135 degrees is composed of three parts.
  • the vertical trunk 111 and the horizontal trunk 112 divide the area of one pixel into four regions (domains), and each region is composed of a branch electrode 113 obliquely 45 degrees. In this way, an electrode design of a "meter" shape in which the upper and lower sides and the left and right sides are mirror-symmetrical is formed.
  • a portion of the branch electrode 113 is electrically connected to the thin film transistor 114 to transfer the voltage from the data line DL to the pixel electrode via the thin film transistor 114.
  • FIG. 2 is a schematic diagram showing the reverse direction of the liquid crystal after a voltage is applied to the pixel electrode as shown in FIG. 1.
  • the liquid crystal 120 is reversed by the pixel electrode.
  • the outer side begins to tilt toward the inner side, and the angle of the tilting is along the extending direction of the branch electrodes.
  • the liquid crystal tilting directions of the four regions are ⁇ 45 degrees and ⁇ 135 degrees, respectively, all pointing to the central region 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, The four quadrants are 135 degrees.
  • the angle at which the liquid crystal of Figure 1 is tilted is poured from the outside to the inside, and its direction is directed to the inside of the pixel.
  • the vertical stem 111 and the horizontal stem 112 in the middle of the pixel electrode belong to the opaque region, which makes it possible to know that the transmittance of the trunk regions 111, 112 is zero. Therefore, such a design reduces the aperture ratio of the liquid crystal display panel.
  • FIG. 3 is another schematic diagram of the structure of the VA mode liquid crystal display panel in the prior art.
  • the liquid crystal display panel unit The pixel electrode structure 400 has a data line DL, a scan line SL, a thin film transistor 414, and a pixel electrode (not shown).
  • the pixel electrode is still located in the pixel area, but its pattern is different from the pattern of the aforementioned pixel electrode.
  • the pixel electrode includes a square frame 411 and a branch electrode 413 located inside the frame, and the center of the plurality of branch electrodes 413 has an opening 412.
  • FIG. 4 is a schematic diagram of the reverse direction of the liquid crystal after the voltage is applied to the pixel electrode as shown in FIG. 3, referring to FIG. 4, when the pixel electrode is energized.
  • the reverse direction of the liquid crystal 420 is gradually tilted outward from the inner side of the pixel electrode, and the angle of the tilting of the liquid crystal 420 is also along the extending direction of the branch electrode, and the liquid crystal tilting directions of the four regions are ⁇ 45 degrees and ⁇ 135 degrees, respectively.
  • the direction is directed by the central area of the pixel to the four corners of the pixel area. Therefore, in the case where the pixel electrode receives the voltage, the liquid crystal molecules are tilted from the inside to the outside without squeezing the intermediate portion, so the circuit designer can minimize the area of the central opening 412, thus, The area of the non-opening area can be greatly reduced, thereby obtaining a higher aperture ratio.
  • FIG. 5 further shows a display pattern in the display area of the pixel electrode as shown in FIG. 3.
  • the structure of the pixel electrode of FIG. 3 can solve the problem of the aperture ratio, but the pixel electrode of FIG.
  • the pattern presented in the region shows that there are opaque regions in the four regions formed by the pixel electrodes, indicating that the angle between the liquid crystal reversal and the X-axis in the opaque region may be 0 or 90 degrees.
  • the pattern presented by the entire pixel electrode produces a disclination line phenomenon, which reduces the transmittance of the panel. Summary of the invention
  • the present invention provides a pixel electrode and a liquid crystal display panel including the same, which can effectively solve the technical problem of lowering the transmittance of the liquid crystal display panel in the prior art.
  • the pixel electrode of the liquid crystal display panel of the present invention includes: a frame electrically connected to one end of the switching unit of the liquid crystal display panel; and a plurality of branch electrodes connected to the frame, each branch The electrode extends from the frame body toward the inside of the frame body at a fixed angle; adjacent branch electrodes are arranged at intervals in a slit; the tail portions of the plurality of branch electrodes form a mirror image inside the frame body a symmetrical structure opening; a steering layer covering the frame is disposed under the frame.
  • the turning layer is disposed on a glass substrate, and an insulating passivation layer is disposed on the turning layer, and a frame of the pixel electrode is disposed on the insulating passivation layer.
  • the edge of the turning layer is a sloped surface, and the inclined surface is at an angle of less than 90 degrees with respect to a horizontal plane.
  • the opening of the mirror-symmetrical structure formed by the tail portion of the branch electrode in the frame body is a "ten"-shaped opening, a “one"-shaped opening, and a “meter”-shaped opening.
  • the size of the slits between the plurality of branch electrodes is not completely the same, and the widths of the plurality of branch electrodes are not completely the same.
  • the plurality of branch electrodes extend from the frame toward the inside of the frame at an angle of 45 degrees.
  • the liquid crystal display panel provided by the present invention comprises a data line, a scan line, a switch unit and a pixel area, wherein the pixel area is provided with a pixel electrode, and the pixel electrode is the above-mentioned pixel electrode of the present invention.
  • the liquid crystal display panel and the pixel electrode provided by the embodiments of the present invention change the steering of the liquid crystal molecules by providing a turning layer under the frame of the pixel electrode, so that the opaque region that is originally 0 degrees and 90 degrees from the X axis is transformed into a transparent Light area. Therefore, the embodiment of the present invention avoids the defect of black lines generated by the liquid crystal display panel and enhances the transparency of the liquid crystal display panel.
  • FIG. 1 is a schematic structural view of a VA mode liquid crystal display panel in the prior art
  • FIG. 2 is a schematic view showing the reverse direction of the liquid crystal after a voltage is applied to the pixel electrode shown in FIG. 1;
  • Figure 3 is a reversed view of the liquid crystal in the cross section of the broken line shown in Figure 1;
  • FIG. 3 is another schematic structural view of a VA mode liquid crystal display panel in the prior art
  • FIG. 4 is a schematic diagram showing the reverse of liquid crystal after voltage is applied to the pixel electrode shown in FIG. 3;
  • FIG. 5 is a display pattern presented in a display area of the pixel electrode shown in FIG. 3;
  • FIG. 6 is a schematic structural view of an embodiment of a liquid crystal display panel provided by the present invention.
  • FIG. 7 is a schematic structural view of the liquid crystal display panel of FIG. 6 after the pixel electrode is removed;
  • Figure 8 is a schematic cross-sectional view showing a partial structure of a liquid crystal display panel of the present invention.
  • Fig. 9 is a view showing a display pattern in a display area of the pixel electrode shown in Fig. 6. detailed description
  • the present invention provides a novel pixel electrode and a liquid crystal display panel including the pixel electrode, which have the defects of low transmittance and unsatisfactory display effect in a local region of the pixel electrode structure of the conventional liquid crystal display. Effectively overcome this drawback.
  • FIG. 6 is a schematic structural view of an embodiment of a liquid crystal display panel provided by the present invention.
  • FIG. 6 is a schematic cross-sectional view showing a liquid crystal display panel provided by the present invention.
  • VA vertical alignment
  • the liquid crystal display panel provided by the embodiment of the present invention is described by taking a vertical alignment (VA) liquid crystal display panel as an example.
  • the pixel electrode structure of the present invention can also be referred to other display panels having similar functions. Or other devices.
  • the liquid crystal display panel unit pixel electrode structure 700 of the embodiment of the present invention includes a data line DL, a scan line SL, a switching unit 714, and a pixel electrode (not shown).
  • the switch unit 714 can be specifically a thin film transistor or other unit having a similar switch function.
  • the pixel electrode of the embodiment includes a frame body 711 and a plurality of branch electrodes 713 located inside the frame body 711. The lower portion of the frame body 711 covers the turn layer 716 of the frame body, and the plurality of branch electrodes 713 are strips.
  • the strip structure is connected to the frame body, and is at an angle of 45 degrees (the specific implementation is not limited to an angle of 45 degrees, and may be any other angle) from the frame 711
  • the inner portion of the frame body 711 extends, and the adjacent branch electrodes 713 are arranged at intervals in a slit, and the tails of the plurality of branch electrodes 713
  • An opening 712 having a mirror symmetrical structure is formed inside the frame, and the opening 712 substantially divides the area of the pixel into four regions, and each region is formed by tiling the branch electrodes 713 inclined at 45 degrees.
  • the frame 711 is electrically connected to one end of the switching unit 714, and the switching unit 714 is electrically connected to the scanning line SL. Therefore, the voltage transmitted by the scanning line SL can be transmitted to the pixel electrode through the switching unit 714 and the housing 711.
  • the angles correspond to ⁇ 45 degrees and ⁇ 135 degrees, respectively.
  • the direction of the branch electrodes 713 are directed to the center of the pixel region. In other words, as shown in FIG.
  • the branch electrodes 713 of the first quadrant are The angle of the scanning line SL is -135 degrees, the angle between the branch electrode 713 of the first quadrant and the scanning line SL is -135 degrees, and the angle between the branch electrode 713 of the second quadrant and the scanning line SL is -45 degrees, The angle between the branch electrode 713 of the three quadrants and the scanning line SL is 45 degrees, and the angle between the branch electrodes 713 of the fourth quadrant and the scanning line SL is 135 degrees.
  • the clip between each branch electrode and the scanning line SL The angles can be designed by the circuit designer to other angles, and such corresponding changes are also within the scope of the present invention.
  • FIG. 7 is a schematic structural view of the liquid crystal display panel of FIG. 6 after the pixel electrode is removed.
  • Fig. 7 it is a schematic structural view after the pixel electrode of Fig. 6 is removed.
  • the turning layer 716 of the present invention is located inside the rectangular frame formed by the data line DL and the scanning line SL, and has the same shape as the frame of the pixel electrode, and the thickness and the edge thereof need to satisfy the upper and lower sides of the liquid crystal display panel.
  • the turning layer 716 is an electrode on a slope of an angle of less than 90 degrees with respect to a horizontal plane (specifically, the transparent conductive glass ITO, the edge of the turning layer has an angle of 20-70 between the inclined surface and the horizontal plane.
  • a power line capable of generating an inward direction of the power line, wherein the power line can adjust the steering of the liquid crystal molecules in the opaque region of the pixel electrode such that the liquid crystal molecules in the opaque region and the X axis of the scan line SL are The angle does not exhibit a state of 0 or 90 degrees, and the opaque region is converted into a light-transmitting region.
  • the turning layer 716 can be metal or other material.
  • Fig. 8 is a schematic cross-sectional view showing a part of the structure of a liquid crystal display panel of the present invention.
  • the liquid crystal display panel of the present invention is, in order from the top to the bottom, a pixel electrode layer 91 (transparent conductive glass ITO layer), an insulating passivation layer 92, a turning layer 93, and a glass substrate 94.
  • a pixel electrode layer 91 transparent conductive glass ITO layer
  • an insulating passivation layer 92 an insulating passivation layer 92
  • a turning layer 93 turning layer
  • a glass substrate 94 glass substrate
  • the turning layer 716 has an electrode on the inclined surface 931 of an angle of less than 90 degrees with respect to a horizontal plane (specifically, transparent conductive glass ITO, the steering
  • the edge of the layer is preferably an angle of 20-70 degrees with respect to the horizontal plane.
  • the power line can generate an inward power line in the direction of the power line, and the power line can adjust the steering of the liquid crystal molecules in the opaque region of the pixel electrode to make it impervious.
  • Fig. 9 is a view showing a display pattern in a display region of the pixel electrode shown in Fig. 6. Referring to Fig. 9, the display pattern produced by the present invention has no black streak phenomenon.
  • the frame 711 and the turning layer 716 are both rectangular structures, but in practical applications, they may have other shapes, such as a circular shape, a regular hexagon, and a positive eight. Edge and so on.
  • the opening 712 is not limited to the "ten" font of the embodiment, and may be, a, a font, or a snow-flake like font, or other branch electrodes 713 may be used. It is within the scope of the present invention to divide the openings into mirror images symmetrically up and down or left and right.
  • the slit sizes between the plurality of branch electrodes 713 are not completely the same, and the widths of the plurality of branch electrodes 713 are not completely the same.
  • the liquid crystal display panel and the pixel electrode provided by the embodiments of the present invention change the steering of the liquid crystal molecules by providing a turning portion under the frame of the pixel electrode, so that the opaque region that is originally 0 degrees and 90 degrees from the X axis is transformed into a transparent portion. Light area. Therefore, the embodiment of the present invention avoids the defect of black lines generated by the liquid crystal display panel and enhances the transparency of the liquid crystal display panel.

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Abstract

本发明提供一种像素电极及液晶显示面板，其中，所述像素电极包括：一框体（711），电连接于液晶显示面板的开关单元（714）的一端；多个分支电极（713），与所述框体（711）相连，每一分支电极（713）以固定的夹角自所述框体（711）向所述框体（711）内部延伸；相邻的分支电极（713）之间是以切口依序间隔排列；所述多个分支电极（713）的尾部在所述框体（711）内部形成镜像对称结构的开口（712）；在所述框体（711）的下方设置有一可覆盖所述框体的转向层（716）。应用本发明的像素电极，液晶显示面板的穿透性较高，显示效果好。

Description

一种液晶显示面板及其像素电极
本申请要求于 2011年 6月 13日提交中国专利局、申请号为 201110157455.0, 发明名称为 "一种液晶显示面板及其像素电极" 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
本发明涉及一种液晶显示技术领域， 尤其涉及一种液晶显示面板及一种像 素电极。 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 (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， 目前常见的是垂 直配向（Vertical Alignment, VA)的液晶显示面板。
在 VA的液晶显示面板中， 会在像素结构的像素电极中形成配向夹缝， 以使 液晶分子产生特定的配向方向。图 1是现有技术中 VA模式液晶显示面板的一结 构示意图。 如图 1所示， 液晶显示面板的单位像素电极结构 1具有数据线 DL、 扫描线 SL、薄膜晶体管 114以及像素电极（未图示）。像素电极位于像素区域内， 为一 "米" （snow-flake like)字型的图案 (layout), 像素电极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 的分支电极 113三部分组成。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（ domain ), 每个区域都由斜向 45度的分支电极 113平铺组 成。 如此， 便形成了上下和左右分别镜像对称的 "米" 字型的电极设计。 其中， 分支电极 113的部分分支电性连接至薄膜晶体管 114, 以将来自数据线 DL的电 压经由薄膜晶体管 114传递至像素电极上。
进一步， 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。 参阅图 2, 当米字型的像素电极在通电的情况下， 液晶 120的倒向由像素电极的 外侧开始逐渐向内侧倾倒， 且其倾倒的角度是沿分支电极的延伸方向， 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。 详细来说， 如图 2所示， 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。
图 1 的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 这种像素电极的设计结构中，像素电极中间的垂直主干 111与水平主干 112是属 于不透光区域， 这就使得可得知主干区域 111、 112的穿透率为零。 因此这样的 设计， 会降低液晶显示面板的开口率。
为解决图 1开口率的问题， 出现了图 3所示的像素电极的设计结构， 图 3 是现有技术中 VA模式液晶显示面板的另一结构示意图，如图 3所示， 液晶显示 面板单位像素电极结构 400具有数据线 DL、 扫描线 SL、 薄膜晶体管 414以及 像素电极（未图示）。 像素电极依然位于像素区域内， 但其图案与前述像素电极 的图案有所不同。 本设计中像素电极包含正方形的框体 411、 以及位于框体内部 的分支电极 413 , 而多个分支电极 413的中央， 具有一开口 412, 开口 412大致 将像素的面积平均分成 4个区域， 每个区域都由斜向 45度的分支电极 413平铺 组成， 进一步， 图 4是如图 3所示的像素电极上施加电压后的液晶倒向示意图， 参阅图 4, 当像素电极在通电的情况下， 液晶 420的倒向是由像素电极的内侧逐 渐向外侧倾倒， 且其倾倒的角度亦沿分支电极的延伸方向， 其四个区域的液晶 倾倒方向分别为 ±45度， ±135度， 其方向皆由像素的中央区域指向像素区域的 四个角落。 由此可之， 在像素电极接收电压的情况下， 液晶分子会由内向外倾 倒而不会因此挤压中间区域， 所以， 电路设计者可以将中央开口 412 的区域减 到最低， 如此一来， 非开口区的面积可以大幅下降， 进而得到更高的开口率。
但是， 进一步图 5是如图 3所示的像素电极的显示区域中呈现显示图案， 参考图 5可知， 采用图 3的像素电极的结构虽然能够解决开口率的问题， 但是 由图 5 中像素电极区域中呈现的图案可知， 在像素电极所形成的四个区域中存 在不透光区域，表明在不透光区域中液晶倒向与 X轴的夹角可能为 0度或 90度， 由此， 造成整个像素电极呈现的图案产生黑纹（disclination line )现象， 降低了 面板的穿透率。 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液晶显示面板穿透率下降的技术问题。
为了解决上述技术问题， 本发明提供的液晶显示面板的像素电极， 包括： 一框体， 电连接于液晶显示面板的开关单元的一端； 多个分支电极， 与所述框 体相连， 每一分支电极以固定的夹角自所述框体向所述框体内部延伸； 相邻的 分支电极之间是以切口依序间隔排列； 所述多个分支电极的尾部在所述框体内 部形成镜像对称结构的开口； 在所述框体的下方设置有一可覆盖所述框体的转 向层。
较佳的， 所述转向层设置在一玻璃基板上， 在所述转向层之上设置一绝缘 钝化层 , 所述像素电极的框体设置在所述绝缘钝化层之上。
较佳的， 所述转向层的边缘为斜面， 所述斜面相对于水平面呈小于 90度夹 角。
较佳的， 所述分支电极的尾部在所述框体内部形成的镜像对称结构的开口 为 "十" 字型开口、 "一" 字型开口、 "米" 字型开口。
较佳的， 所述多个分支电极之间的切口大小不完全相同， 且所述多个分支 电极的宽度不完全相同。
较佳的，所述多个分支电极以 45度的夹角自所述框体向所述框体内部延伸。 相应的， 本发明提供的液晶显示面板， 包括数据线、 扫描线、 开关单元以 及一像素区域， 所述像素区域中设置像素电极， 所述像素电极为上述所提及的 本发明的像素电极。
实施本发明的实施例， 具有如下有益效果：
本发明实施例提供的液晶显示面板和像素电极通过在像素电极的框体的下 方设置转向层来改变液晶分子的转向，使得原来与 X轴呈 0度和 90度的不透光 区域转变为透光区域。 因此， 本发明实施例避免了液晶显示面板产生黑纹的缺 陷， 增强了液晶显示面板的穿透性。 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 VA模式液晶显示面板的的一结构示意图；
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 3是现有技术中 VA模式液晶显示面板的另一结构示意图；
图 4是如图 3所示的像素电极上施加电压后的液晶倒向示意图；
图 5是如图 3所示的像素电极的显示区域中呈现显示图案；
图 6是本发明提供的液晶显示面板的一实施例结构示意图；
图 7是图 6中的液晶显示面板去掉像素电极之后的结构示意图；
图 8是本发明的液晶显示面板的部分结构的截面示意图；
图 9是如图 6所示的像素电极的显示区域中呈现显示图案。 具体实施方式
本发明针对现有的液晶显示器的像素电极结构中局部区域仍存在的穿透率 低， 显示效果不理想的缺陷， 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， 以有效的克服该缺陷。
图 6是本发明提供的液晶显示面板的一实施例结构示意图。 如图 6所示， 为本发明提供的液晶显示面板的一剖面示意图。 需要说明的是， 本发明实施例 提供的液晶显示面板以垂直配向 （VA )液晶显示面板为例进行说明， 具体实现 中， 本发明的像素电极结构也可被引用到其他具有类似功能的显示面板或其他 设备中。
具体的， 如图 6所示， 本发明实施例的液晶显示面板单位像素电极结构 700 包括数据线 DL、 扫描线 SL、 开关单元 714以及像素电极（未图示）。 其中， 开 关单元 714具体可为一薄膜晶体管或是其它具有类似开关功能的单元。 进一步， 本实施例的像素电极包含框体 711、 位于框体 711内部的多个分支电极 713 , 位 于框体 711下部可覆盖所述框体的转向层 716,所述多个分支电极 713为条形结 构， 所述条形结构与所述框体相连， 并以 45度的夹角 （具体实现中并不限于 45 度夹角， 也可为其他任意夹角 ) 自所述框体 711 向所述框体 711 的内部延伸， 相邻的分支电极 713之间是以切口依序间隔排列， 所述多个分支电极 713的尾 部在所述框体内部形成镜像对称结构的开口 712,开口 712大致将像素的面积平 均分成 4个区域， 每个区域都由斜向 45度的分支电极 713平铺组成。
框体 711电连接至开关单元 714的一端，而开关单元 714则电连接至扫描线 SL, 因此， 由扫描线 SL传递的电压， 便可通过开关单元 714与框体 711传递至 像素电极上。 的夹角分别对应 ±45度以及 ±135度， 于本发明的较佳实施例， 分支电极 713的 方向皆指向像素区域的中央， 换言之， 如图 6 所示， 第一象限的分支电极 713 与扫描线 SL的夹角为 -135度， 第一象限的分支电极 713与扫描线 SL的夹角为 -135度， 第二象限的分支电极 713与扫描线 SL的夹角为 -45度， 第三象限的分 支电极 713与扫描线 SL的夹角为 45度， 第四象限的分支电极 713与扫描线 SL 的夹角为 135度， 具体实现中， 各分支电极与扫描线 SL之间的夹角可由电路设 计者设计为其它的角度， 如此的相对应变化， 亦属本发明的范畴。
图 7是图 6 中的液晶显示面板去掉像素电极之后的结构示意图。 参考图 7 所示， 其为将图 6中的像素电极去掉后的结构示意图。 如图 7所示， 本发明的 转向层 716位于数据线 DL和扫描线 SL所形成的矩形框内部， 其形状与像素电 极的框体形状相同， 其厚度及边缘需要满足当液晶显示面板的上下基板产生电 位差时， 该转向层 716对于水平面呈小于 90度角的斜面上的电极（具体可为透 明导电玻璃 ITO,所述转向层的边缘为斜面相对于水平面的夹角优先为 20-70度） 能产生电力线方向向内的电力线， 所述电力线可对像素电极中不透光区域的液 晶分子的转向进行调整 ,使不透光区域中的液晶分子与扫描线 SL所在的 X轴所 成夹角不会呈现 0度或 90度的状态， 进而将不透光区域转换为透光区域。 具体 实现中， 转向层 716可为金属或者其他材料。
图 8是本发明的液晶显示面板的部分结构的截面示意图。 如图 8所示， 本 发明的液晶显示面板从上至下依次为像素电极层 91 (透明导电玻璃 ITO层）、绝 缘钝化层 92, 转向层 93以及玻璃基板 94。 由图 9可知， 当液晶显示面板通电 后， 当其上下基板产生电位差时， 该转向层 716对于水平面呈小于 90度角的斜 面 931上的电极（具体可为透明导电玻璃 ITO,所述转向层的边缘为斜面相对于 水平面的夹角优先为 20-70度）能产生电力线方向向内的电力线， 所述电力线可 对像素电极中不透光区域的液晶分子的转向进行调整， 使不透光区域中的液晶 分子与扫描线 SL所在的 X轴所成夹角不会呈现 0度或 90度的状态， 进而将不 透光区域转换为透光区域。 进而解决了现有的液晶显示面板产生黑纹的缺陷。 图 9是如图 6所示的像素电极的显示区域中呈现显示图案， 参考图 9可知， 本 发明产生的显示图案没有黑纹现象。
另外， 需要说明的是， 在本发明实施例中， 框体 711和转向层 716均为一 矩形架构， 但于实际应用中， 它们亦可具有其它的形状， 例如圓形、 正六边形、 正八边形等等。 而开口 712也不限定于本实施例的 "十" 字型， 也可以是，，一，， 字型或是，，米" (snow-flake like)字型，或是其它可以将分支电极 713分成上下或左 右分别镜像对称的开口都属于本发明的范畴。 另外， 所述多个分支电极 713 之 间的切口大小不完全相同， 且所述多个分支电极 713的宽度不完全相同。
本发明实施例提供的液晶显示面板和像素电极通过在像素电极的框体的下 方设置转向部来改变液晶分子的转向，使得原来与 X轴呈 0度和 90度的不透光 区域转变为透光区域。 因此， 本发明实施例避免了液晶显示面板产生黑纹的缺 陷， 增强了液晶显示面板的穿透性。
综上所述， 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， 包括：
一框体， 电连接于液晶显示面板的开关单元的一端；
多个分支电极， 与所述框体相连， 每一分支电极以固定的夹角自所述框体 向所述才 II体内部延伸；
相邻的分支电极之间是以切口依序间隔排列；
所述多个分支电极的尾部在所述框体内部形成镜像对称结构的开口； 在所述框体的下方设置有一可覆盖所述框体的转向层。
2、 如权利要求 1所述的像素电极， 其特征在于， 所述转向层设置在一玻璃 基板上， 在所述转向层之上设置一绝缘钝化层， 所述像素电极的框体设置在所 述绝缘钝化层之上。
3、如权利要求 2所述的像素电极， 其特征在于， 所述转向层的边缘为斜面， 所述斜面相对于水平面呈小于 90度夹角。
4、 如权利要求 1所述的像素电极， 其特征在于， 所述分支电极的尾部在所 述框体内部形成的镜像对称结构的开口为 "十"字型开口、 "一"字型开口、 "米" 字型开口。
5、 如权利要求 1所述的像素电极， 其特征在于， 所述多个分支电极之间的 切口大小不完全相同， 且所述多个分支电极的宽度不完全相同。
6、 如权利要求 1 所述的像素电极， 其特征在于， 所述多个分支电极以 45 度的夹角自所述框体向所述框体内部延伸。
7、 一种液晶显示面板， 包括数据线、 扫描线、 开关单元以及一像素区域， 所述像素区域中设置像素电极， 其特征在于， 所述像素电极包括：
一框体， 电连接于所述液晶显示面板的开关单元的一端； 多个分支电极， 与所述框体相连， 每一分支电极以固定的夹角自所述框体 边缘向所述框体内部延伸， 相邻的分支电极之间是以切口依序间隔排列；
所述多个分支电极的尾部在所述框体内部形成镜像对称结构的开口； 在所述框体的下方设置有一可覆盖所述框体的转向层。
8、 如权利要求 7所述的液晶显示面板， 其特征在于， 所述转向层设置在一 玻璃基板上， 在所述转向层之上设置一绝缘钝化层， 所述像素电极的框体设置 在所述绝缘钝化层之上。
9、 如权利要求 8所述的液晶显示面板， 其特征在于， 所述转向层的边缘为 斜面， 所述斜面相对于水平面呈小于 90度夹角。
10、 如权利要求 7 所述的液晶显示面板， 其特征在于， 所述多个分支电极 以 45度的夹角自所述框体向所述框体的内部延伸。
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