WO2021042471A1 - 像素电极结构及显示装置 - Google Patents

像素电极结构及显示装置 Download PDF

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Publication number
WO2021042471A1
WO2021042471A1 PCT/CN2019/114179 CN2019114179W WO2021042471A1 WO 2021042471 A1 WO2021042471 A1 WO 2021042471A1 CN 2019114179 W CN2019114179 W CN 2019114179W WO 2021042471 A1 WO2021042471 A1 WO 2021042471A1
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WIPO (PCT)
Prior art keywords
electrode
branch
width
electrode portion
pixel
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PCT/CN2019/114179
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English (en)
French (fr)
Inventor
曹武
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深圳市华星光电半导体显示技术有限公司
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Priority to US16/616,987 priority Critical patent/US20210364866A1/en
Publication of WO2021042471A1 publication Critical patent/WO2021042471A1/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
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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 display technology, in particular to a pixel electrode structure and a display device.
  • the orientation of the liquid crystal molecules is significantly related to the efficiency of the liquid crystal, which is specifically expressed in its tilt angle and rotation azimuth angle (specifically related to the positive and negative polarities of the liquid crystal molecules).
  • the liquid crystal efficiency refers to the transmission and rotation of the incident light direction so that it can be emitted from The ability to emit light at the direction of the polarizer.
  • L refers to the width of the branch electrode 102' in the pattern area of the pixel electrode
  • S refers to the width of the gap 100' between two adjacent branch electrodes 102'
  • P the difference between S and L
  • the ratio of the width L of the branch electrode 102' to the width S of the gap 100' between the branch electrodes 102' or the sum P of S and L remains unchanged, that is, it does not vary with the region. Variety.
  • the liquid crystal efficiency analysis when the upper and lower polarizers of the pixel unit are rotated by 45° (the liquid crystal parts with unsatisfactory deflection are reflected), it is found that the main electrode 101' of the border main area and the two sides of the data line 2, or at the border The liquid crystal lodging state of the main electrode 101' is inconsistent; the liquid crystal molecules at the main electrode 101' in the cross main area are completely down and rotated in the horizontal and vertical directions; while the state of the boundary main electrode molecules is complex, except that the plane azimuth is not confused. , Its lodging degree is relatively poor, and the latter accounted for the main part, resulting in a significant drop in efficiency/penetration rate.
  • the present invention provides a pixel electrode structure and a display device.
  • the proportional relationship between L and S of the branch electrodes is changed to improve the liquid crystal efficiency. And penetration rate.
  • the present invention provides a pixel electrode structure, which includes a border main region and a branch region; wherein the border main region has a main electrode; the branch region has a plurality of branch electrodes, and the branch electrodes are mutually connected. Are arranged in parallel and connected to the main electrode; there is a gap between two adjacent branch electrodes; at least one branch electrode has a first electrode part and a second electrode part, and the second electrode part is connected to the first electrode Between the portion and the main electrode; the width of the first electrode portion is smaller than the width of the second electrode portion.
  • the central axis of the first electrode part is staggered and parallel to the central axis of the second electrode part.
  • the central axis of the first electrode part coincides with the central axis of the second electrode part.
  • the width of one second electrode portion is the same as the width of the other second electrode.
  • the width of one second electrode portion is different from the width of the other second electrode.
  • the width of one gap is the same as or different from the width of the other gap.
  • the included angle there is an included angle between the branch electrode and the main electrode, and the included angle is 30°-60°.
  • the branch electrode further includes a third electrode part connected between the first electrode part and the second electrode part, wherein the first electrode part
  • the cross section is a rectangle
  • the cross section of the second electrode part is a rectangle
  • the cross section of the third electrode part is a trapezoid with a wide top and a narrow bottom.
  • the difference between the width of the second electrode portion and the width of the first electrode portion is less than or equal to 2um.
  • the present invention also provides a display device including the pixel electrode structure described above.
  • the pixel electrode structure and display device of the present invention by increasing the width of the branch electrode at the pixel boundary area, effectively improves the serious deterioration of the liquid crystal tilt angle, causing problems such as low actual efficiency or transmittance in these areas, and can improve lodging.
  • the purpose of efficiency thereby effectively improving the transmittance of the liquid crystal.
  • FIG. 1 is a structural diagram of a branch electrode and a main electrode of a pixel electrode structure in the prior art.
  • FIG. 2 is a structural diagram of a pixel electrode according to Embodiment 1 of the present invention.
  • FIG. 3 is a structural diagram of the branch electrode and the main electrode of Embodiment 1 of the present invention, which mainly reflects the structure of the branch electrode.
  • FIG. 4 is a structural diagram of the branch electrode and the main electrode of Embodiment 1 of the present invention, which mainly reflects a distributed structure of the branch electrodes with varying widths.
  • FIG. 5 is a structural diagram of the branch electrode and the main electrode of Embodiment 2 of the present invention, which are mainly embodied in the same branch electrode, and the central axis of the first electrode part is staggered and parallel to the central axis of the second electrode part.
  • FIG. 6 is a structural diagram of the branch electrode and the main electrode of Embodiment 3 of the present invention.
  • the width of one second electrode is different from the width of the other second electrode.
  • FIG. 7 is a structural diagram of the branch electrode and the main electrode of Embodiment 4 of the present invention, which mainly reflects the structure of the branch electrode.
  • this embodiment uses an eight-domain pixel structure as an example to describe the pixel electrode structure 1 of the present invention.
  • the pixel electrode structure 1 of the present invention includes a main area 11 and a sub area 12 and a transistor distribution area 13 connected between the main area 11 and the sub area 12.
  • the data lines 2 are distributed on both sides of the main area 11 and the secondary area 12; common electrodes 3 are also distributed on the main area 11 and the secondary area 12.
  • the main area 11 and the sub-area 12 both have pixel electrodes, and the pixel electrodes include a border main area 14, a cross main area 15 and a branch area 16.
  • the boundary backbone area 14 surrounds the cross backbone area 15, and the branch area 16 is formed between the boundary backbone area 14 and the cross backbone area 15.
  • Both the boundary main area 14 and the cross main area 15 have main electrodes 101; the branch areas 16 have several branch electrodes 102.
  • the branch electrodes 102 are arranged parallel to each other and connected to the main electrode 101.
  • At least one branch electrode 102 has a first electrode portion 1021 and a second electrode portion 1022.
  • the second electrode portion 1022 is connected between the first electrode portion 1021 and the main electrode 101; the width of the first electrode portion 1021 is smaller than the width of the second electrode portion 1022, wherein the width of the first electrode portion 1021 is It is marked as L1 in FIG. 3, the width of the second electrode portion 1022 is marked as L2 in FIG. 3, that is, L1 is smaller than L2, and the gap 100 between the second electrode portion 1022 and an adjacent branch electrode 102
  • the width of is S1, and the width of the gap 100 between the second electrode portion 1022 and the adjacent branch electrode 102 is S2.
  • the width of the gap 100' between two adjacent branch electrodes 102' is generally equal, that is, the width of the gap 100' is both S.
  • the width of the first electrode portion 1021 is smaller than the width of the second electrode portion 1022, that is, L1 is smaller than L2, which changes
  • the width of the gap 100 between the second electrode portion 1022 and the adjacent branch electrode 102 is such that the points on the edge of the branch electrodes 102 whose width is changed to between the adjacent branch electrodes 102 The distance formed by the difference, effectively improved the efficiency and transmittance of the liquid crystal.
  • a part of the width S1 of the gap 100 is greater than another part of the width S2 of the gap 100.
  • the central axis 1001 of the first electrode part overlaps the central axis 1002 of the second electrode part.
  • the difference between the width L2 of the second electrode portion 1022 and the width L1 of the first electrode portion 1021 is less than or equal to 2um.
  • the width increase of the second electrode portion 1022 should not be too large, and is generally controlled within 2um, preferably 1-1.5um; and in order to ensure that the gap 100 between two adjacent branch electrodes 102 can meet the requirements of the actual production process Therefore, the gap 100 between two adjacent branch electrodes 102 needs to have a sufficient width, which is generally greater than 1um and less than 3um.
  • the connection between the branch electrode 102 and the main electrode 101 will eventually become a relatively smooth boundary due to the passivation effect of the actual etching process, which is beneficial to the orientation of the liquid crystal.
  • the width of all the branch electrodes 102 can be changed to form a structure having a first electrode and a second electrode.
  • the width of the second electrode portion 1022 of one branch electrode is the same as the width of the second electrode portion of the other branch electrode.
  • the width of one gap 100 is the same as or different from the width of the other gap 100.
  • the liquid crystal molecules are affected by the stray electric field, and their lodging state is not as good as the center area of the pixel electrode, that is, the deterioration of the liquid crystal tilt angle is serious, causing the actual situation in these areas.
  • the efficiency or transmittance is low; therefore, in order to change the problem of low liquid crystal efficiency in the pixel boundary area; increase the width of the branch electrode 102, through the formation of a pressure difference and electric field with the upper plate, to improve the lodging effect; increase the pixel boundary area by design
  • the width of the branch electrode 102 can achieve the purpose.
  • the width L2 of the branch electrode 102 connected to the main electrode 101 at the boundary increases, according to the change of the width of the gap 100 between the branch electrodes 102, that is, the change of S1 and S2.
  • the symmetry axes of the second electrode portion 1022 and the first electrode portion 1021 may overlap or form dislocations, and the widened branch electrodes 102 may be implemented to each or a specific number.
  • the branch electrodes 102 can be selected to form the structure of the first electrode portion and the second electrode portion.
  • these branch electrodes 102 with changed widths and these branches with unchanged widths The electrodes 102' can be arranged at intervals.
  • the branch electrodes 102 connected to the main electrode 101 are provided with a first electrode portion and a second electrode portion, and in the secondary area 12, the branch electrode 101 is connected to the main electrode 101.
  • the branch electrodes 102 with changed widths and the branch electrodes 102' with unchanged widths are arranged at intervals.
  • the difference between the second embodiment and the first embodiment is that in the same branch electrode 102 of the second embodiment, the central axis of the first electrode portion 1021
  • the central axes 1001 and 1002 of the second electrode portion 1022 are staggered and are parallel to each other.
  • the width increase on both sides of the second electrode portion is different, so that the central axis 1002 of the second electrode portion can be aligned with the first electrode portion 1021.
  • the central axis 1001 is staggered.
  • the difference between this embodiment 3 and embodiment 1 or 2 lies in: in any two different branch electrodes 102 of this embodiment 3, the width of one second electrode portion 1022 is different from that of the other second electrode.
  • the width of the part is different. That is, the width of one of the second electrode portions 1022 is L2', and the width of the other second electrode portion 1022 is L2'', and L2' is not equal to L2''. In this way, it is easier to make a difference in the distance between each point on the edge of a branch electrode 102 and an adjacent branch electrode 102, which effectively improves the liquid crystal efficiency and transmittance.
  • the branch electrode 102 of this embodiment 4 further includes a third electrode portion 1023, and the third electrode portion 1023 is connected to the third electrode portion 1023.
  • the third electrode portion 1023 has an upper base and a lower base, the upper base is smaller than the lower base, and the upper base of the third electrode portion 1023 is connected to the first electrode portion 1021 , The bottom of the third electrode portion 1023 is connected to the second electrode portion 1022.
  • the present invention also provides a display device 10, referring to FIG. 3, including the pixel electrode structure 1 described in any one of Embodiments 1-4. Since the main design point of the present invention lies in the pixel electrode structure 1, other devices or structures in the display device, such as the light-emitting layer, will not be repeated.

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

Abstract

一种像素电极结构(1)及显示装置(10)，像素电极结构(1)包括边界主干区域(14)以及分支区域(16)；其中边界主干区域(14)具有主干电极(101)；分支区域(16)中具有若干分支电极(102)，分支电极(102)相互平行排列且连接于主干电极(101)；相邻两根分支电极(102)之间具有一间隙(100)；至少一分支电极(102)具有第一电极部(1021)和第二电极部(1022)，第二电极部(1022)连接于第一电极部(1021)和主干电极(101)之间；第一电极部(1021)的宽度小于第二电极部(1022)的宽度。

Description

像素电极结构及显示装置 技术领域
本发明涉及显示技术领域，具体为一种像素电极结构及显示装置。
 背景技术
液晶分子的取向与液晶效率显著相关，具体表现为其倾倒角度和旋转方位角度(具体与液晶分子正负极性有关)，液晶效率是指透过并旋转入射光方向，以使其能从出射方向的偏光片处出射的能力。
像素电极结构的分布是重要设计项，图1中L指像素电极的图形区的分支电极102’的宽度，S指两相邻分支电极102’之间的间隙100’的宽度，S与L的两者之和为P。一般P越小，显示面板的显示效果越优，目前常见P已经到5um甚至更低。
现有技术中，S与L的两者之和P相同，L与S的比例关系非常微妙；从理论上看，L越大，给予的垂直电场强，倾角改善明显，液晶效率越高；而从模拟结果看，由于分支电极102’与主干电极101’的边界处受复杂电场影响，一般L越小其液晶效率越高，但存在峰值设计。
在整颗像素中，分支电极102’的宽度L与分支电极102’之间的间隙100’的宽度S的比例或者S与L的两者之和P保持不变，即不随着区域不同而发生变化。而在液晶效率分析中，当将像素单元上下偏光片旋转45°后(将偏转不理想的液晶部分体现出来)，发现，边界主干区的主干电极101’及数据线2两侧，或者边界处的主干电极101’的液晶倒伏状态不一致；其中十字主干区域的主干电极101’处的液晶分子完全倒伏，且旋转排列在水平垂直方向；而边界主干电极分子状态复杂，除了平面方位角未混乱外，其倒伏程度较差，且后者占主要部分，造成效率/穿透率下降明显。
 技术问题
为解决上述技术问题：本发明提供一种像素电极结构及显示装置，通过改变分支电极的部分宽度或者分支电极之间的间隙的宽度，改变分支电极是L与S的比例关系，以提高液晶效率和穿透率。
 技术解决方案
解决上述问题的技术方案是：本发明提供一种像素电极结构，包括边界主干区域以及分支区域；其中所述边界主干区域具有主干电极；所述分支区域中具有若干分支电极，所述分支电极相互平行排列且连接于所述主干电极；相邻两根分支电极之间具有一间隙；至少一分支电极具有第一电极部和第二电极部，所述第二电极部连接于所述第一电极部和所述主干电极之间；所述第一电极部的宽度小于所述第二电极部的宽度。
在本发明的一实施例中，在同一分支电极中，所述第一电极部的中心轴线相错且平行于所述第二电极部的中心轴线。
在本发明的一实施例中，在同一分支电极中，所述第一电极部的中心轴线重合于所述第二电极部的中心轴线。
在本发明的一实施例中，在任意两个不同分支电极中，其中一个第二电极部的宽度与另一个第二电极的宽度相同。
在本发明的一实施例中，在任意两个不同分支电极中，其中一个第二电极部的宽度与另一个第二电极的宽度不同。
在本发明的一实施例中，在任意两个不同间隙中，其中一个间隙的宽度与另一个间隙的宽度相同或不同。
在本发明的一实施例中，所述分支电极与所述主干电极之间具有一夹角，所述夹角为30°-60°。
在本发明的一实施例中，所述分支电极还包括第三电极部，所述第三电极部连接在所述第一电极部和第二电极部之间，其中，所述第一电极部截面为长方形，所述第二电极部截面为长方形，所述第三电极部截面为上宽下窄的梯形。
在本发明的一实施例中，所述第二电极部的宽度与所述第一电极部的宽度之间的差值小于或等于2um。
本发明还提供了一种显示装置，包括所述的像素电极结构。
 有益效果
本发明的像素电极结构及显示装置，通过增大像素边界区处的分支电极的宽度，有效的改善了液晶倾角恶化严重，造成这些区域实际效率或穿透率偏低等问题，可以达到改善倒伏效率的目的，从而有效地提升了液晶穿透率。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
下面结合附图和实施例对本发明作进一步解释。
图1是现有技术中的像素电极结构的分支电极和主干电极的结构图。
图2是本发明实施例1的像素电极结构图。
图3是本发明实施例1的分支电极和主干电极的结构图，主要体现分支电极的结构。
图4是本发明实施例1的分支电极和主干电极的结构图，主要体现改变宽度的分支电极的一种分布结构。
图5是本发明实施例2的分支电极和主干电极的结构图，主要体现在同一分支电极中，第一电极部的中心轴线相错且平行于第二电极部的中心轴线。
图6是本发明实施例3的分支电极和主干电极的结构图，在任意两个不同分支电极中，其中一个第二电极部的宽度与另一个第二电极的宽度不同。
图7是本发明实施例4的分支电极和主干电极的结构图，主要体现分支电极的结构。
附图标记：
1像素电极结构；2数据线；3公共电极；
11主区；12次区；13晶体管分布区；
14边界主干区域；15十字主干区域；16分支区域；
101’、101主干电极；102’、102分支电极；100’、100间隙；
1021第一电极部；1022第二电极部；1023第三电极部；
1001第一电极部的中心轴线；1002第二电极部的中心轴线；
10显示装置。
 本发明的实施方式
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
以下实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「顶」、「底」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
实施例1
为了更加清楚的阐述本案的设计要点，本实施例以八畴像素结构为例对本发明的像素电极结构1进行说明。
如图2所示，本发明的像素电极结构1，包括主区11和次区12以及连接在主区11和次区12之间的晶体管分布区13。数据线2分布在所述主区11和所述次区12的两侧；主区11和次区12上还分布有公共电极3。
所述主区11和所述次区12，均具有像素电极，所述像素电极包括边界主干区域14、十字主干区域15以及分支区域16。其中，所述边界主干区域14包围所述十字主干区域15，所述边界主干区域14与所述十字主干区域15之间形成所述分支区域16。
所述边界主干区域14和所述十字主干区域15均具有主干电极101；所述分支区域16中具有若干分支电极102。所述分支电极102相互平行排列且连接于所述主干电极101。所述分支电极102与所述主干电极101之间具有一夹角，所述夹角为30°-60°。优选为45°。
如图3所示，本实施例中，相邻两根分支电极102之间具有一间隙100，其中至少一个分支电极102具有第一电极部1021和第二电极部1022，所述第二电极部1022连接于所述第一电极部1021和所述主干电极101之间；所述第一电极部1021的宽度小于所述第二电极部1022的宽度，其中所述第一电极部1021的宽度在图3中标记为L1，所述第二电极部1022的宽度在图3中标记为L2,即L1小于L2，所述第二电极部1022到其相邻的一分支电极102之间的间隙100的宽度为S1, 所述第二电极部1022到相邻的这一分支电极102之间的间隙100的宽度为S2。在现有的分支电极102’的结构中，相邻两根分支电极102’之间的间隙100’的宽度一般相等，即间隙100’宽度均为S。但是，在本实施例中，通过改变所述第二电极部1022的宽度，使得所述第一电极部1021的宽度小于所述第二电极部1022的宽度，即L1小于L2，这样就改变了所述第二电极部1022到其相邻的一分支电极102之间的间隙100的宽度，使得改变了宽度的这些分支电极102上的边缘各点，到其相邻的一分支电极102之间的距离形成差异，有效的改善了液晶效率和穿透率。例如：所述间隙100的其中一部分宽度S1大于所述间隙100的另一部分宽度S2。
本实施例中，如图3所示，在同一分支电极102中，所述第一电极部的中心轴线1001重合于所述第二电极部的中心轴线1002。
本实施例中，所述第二电极部1022的宽度L2与所述第一电极部1021的宽度L1之间的差值小于或等于2um。所述第二电极部1022的宽度增大幅度不宜过大，一般控制在2um以内，优选为1-1.5um；而为了保证相邻两根分支电极102之间的间隙100能够满足实际生产工艺的要求，因此相邻两根分支电极102之间的间隙100需要足够宽度，一般大于1um小于3um。在实际制作工艺中，分支电极102与主干电极101之间的连接处，因为实际刻蚀的工艺钝化效果，最终变为相对平滑的边界，因而对于液晶的取向是有利的。
参见图2所示，在分支区域16，可以改变所有的分支电极102的宽度，使之形成具有第一电极和第二电极的结构。
在本实施例中，在任意两个不同分支电极102中，其中一个分支电极的第二电极部1022的宽度与另一个分支电极的第二电极部的宽度相同。在任意两个不同间隙100中，其中一个间隙100的宽度与另一个间隙100的宽度相同或不同。
由于在像素边界区，尤其是在数据线2或栅极走线两侧区域，液晶分子受逸散电场等影响，其倒伏状态不如像素电极的中心区，即液晶倾角恶化严重，造成这些区域实际效率或穿透率偏低；因此，为了改变像素边界区液晶效率过低的问题；提高分支电极102宽度，经过与上板形成压差和电场，改善倒伏效果；通过设计增大像素边界区处的分支电极102的宽度，即可达成目的。
当与边界处的主干电极101相连的分支电极102的宽度L2增大后，根据分支电极102之间间隙100的宽度变化，即S1和S2的变化，。第二电极部1022和第一电极部1021的对称轴可重合亦可形成位错，且增宽的分支电极102可以实施到每一条抑或是特定条数。
如图4所示，当然也可以选择一部分分支电极102使之形成第一电极部和第二电极部的结构，在电极排布时，改变了宽度的这些分支电极102和未改变宽度的这些分支电极102’可以间隔设置，本实施例中，在主区11中，与主干电极101连接的分支电极102均设置第一电极部和第二电极部，而在次区12，与主干电极101连接的分支电极102，其中改变了宽度的这些分支电极102和未改变宽度的这些分支电极102’间隔设置。
实施例2
如图5所示，为了进一步改善液晶效率和穿透率，本实施例2与实施例1的区别在于，在本实施例2的同一分支电极102中，所述第一电极部1021的中心轴线1001与所述第二电极部1022的中心轴线1002错开设置且相互平行。在具体实施时，在第二电极部1022的宽度方向上，第二电极部的两侧的宽度增幅不同，这样就使得所述第二电极部的中心轴线1002能够与所述第一电极部1021的中心轴线1001错开。
实施例3
如图6所示，本实施例3与实施例1或2的区别在于：在本实施例3的任意两个不同分支电极102中，其中一个第二电极部1022的宽度与另一个第二电极部的宽度不同。即其中一个第二电极部1022的宽度为L2’,另一个第二电极部1022的宽度为L2’’，且L2’不等于L2’’。如此，可以更容易使得一个分支电极102上的边缘各点，到其相邻的一分支电极102之间的距离形成差异，有效的改善了液晶效率和穿透率。
实施例4
如图7所示，本实施例4与实施例1-3的区别在于，本实施例4的所述分支电极102还包括第三电极部1023，所述第三电极部1023连接在所述第一电极部1021和第二电极部1022之间，其中，所述第一电极部1021的截面为长方形，所述第二电极部1022的截面为长方形，所述第三电极部1023的截面为上宽下窄的梯形，所述第三电极部1023具有一上底和下底，所述上底小于所述下底，所述第三电极部1023的上底连接于所述第一电极部1021，所述第三电极部1023的下底连接于所述第二电极部1022。
本发明还提供了一种显示装置10，参见图3，包括实施例1-4中的任意一种所述的像素电极结构1。由于本发明的主要设计要点在于像素电极结构1，因此，对于显示装置中的其他器件或结构，如发光层等就不再一一赘述。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种像素电极结构，其包括边界主干区域以及分支区域；其中
    所述边界主干区域具有主干电极；
    所述分支区域中具有若干分支电极，所述分支电极相互平行排列且连接于所述主干电极；相邻两根分支电极之间具有一间隙；
    至少一分支电极具有第一电极部和第二电极部，所述第二电极部连接于所述第一电极部和所述主干电极之间；所述第一电极部的宽度小于所述第二电极部的宽度。
  2. 根据权利要求1所述的像素电极结构，其中，在同一分支电极中，所述第一电极部的中心轴线与所述第二电极部的中心轴线的错开设置且相互平行。
  3. 根据权利要求1所述的像素电极结构，其中，在同一分支电极中，所述第一电极部的中心轴线重合于所述第二电极部的中心轴线。
  4. 根据权利要求1所述的像素电极结构，其中，在任意两个不同分支电极中，其中一个分支电极的第二电极部的宽度与另一个分支电极的第二电极的宽度相同。
  5. 根据权利要求1所述的像素电极结构，其中，在任意两个不同分支电极中，其中一个分支电极的第二电极部的宽度与另一个分支电极的第二电极的宽度不同。
  6. 根据权利要求1所述的像素电极结构，其中，在任意两个不同间隙中，其中一个间隙的宽度与另一个间隙的宽度相同或不同。
  7. 根据权利要求1所述的像素电极结构，其中，所述分支电极与所述主干电极之间具有一夹角，所述夹角为30°-60°。
  8. 根据权利要求1所述的像素电极结构，其中，所述分支电极还包括第三电极部，所述第三电极部连接在所述第一电极部和第二电极部之间，其中，所述第一电极部截面为长方形，所述第二电极部截面为长方形，所述第三电极部截面为上宽下窄的梯形。
  9. 根据权利要求1所述的像素电极结构，其中，所述第二电极部的宽度与所述第一电极部的宽度之间的差值小于或等于2um。
  10. 一种显示装置，其特征在于，包括如权利要求1所述的像素电极结构。
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