WO2015018191A1 - 一种液晶显示面板 - Google Patents

一种液晶显示面板 Download PDF

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Publication number
WO2015018191A1
WO2015018191A1 PCT/CN2014/071091 CN2014071091W WO2015018191A1 WO 2015018191 A1 WO2015018191 A1 WO 2015018191A1 CN 2014071091 W CN2014071091 W CN 2014071091W WO 2015018191 A1 WO2015018191 A1 WO 2015018191A1
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WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
display panel
slit
panel according
Prior art date
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Ceased
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PCT/CN2014/071091
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English (en)
French (fr)
Inventor
郝思坤
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/240,372 priority Critical patent/US20150153618A1/en
Publication of WO2015018191A1 publication Critical patent/WO2015018191A1/zh
Anticipated expiration legal-status Critical
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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular to a liquid crystal display panel which improves liquid crystal efficiency. Background technique
  • the liquid crystal display has become a display terminal of mobile communication devices, personal computers, televisions, etc. due to its high display quality, low price, and convenient carrying.
  • Liquid crystal displays currently in common use are usually composed of upper and lower substrates and an intermediate liquid crystal layer, and the substrate is composed of glass and electrodes.
  • a display capable of forming a vertical electric field mode, such as a twisted nematic (TN) mode, a vertical alignment (VA) mode, and a plurality of developed to solve the narrow viewing angle can be formed.
  • a vertical electric field mode such as a twisted nematic (TN) mode, a vertical alignment (VA) mode, and a plurality of developed to solve the narrow viewing angle.
  • TN twisted nematic
  • VA vertical alignment
  • the electrodes are only located on one side of the substrate, forming a display of a transverse electric field mode, such as an in-piane switching (IPS) mode, Fringe Field Switching (FFS). Mode, etc.
  • IPS in-piane switching
  • FFS Fringe Field Switching
  • VA mode thin-film transistor displays are used for large-sized panels such as LCD TVs with high aperture, high resolution, wide viewing angle, etc., but in small-sized, high-resolution panels,
  • the pixel liquid crystal designed by the method is low in efficiency, and the vertical alignment (VA) mode is not commonly used.
  • the electrodes of a conventional LCD panel are shown in Figure 2 and Figure 2.
  • the pixel electrode of the thin film transistor (TFT) array substrate is set to be "fishbone", that is, the entire electrode is divided into a plurality of electrodes by vertically intersecting strip-shaped main electrodes (keel) a display area in which strip-shaped branch electrodes spaced apart from each other are disposed in each display area;
  • electrodes of a color filter substrate (CF) are in a common film shape as a common pixel electrode.
  • the prior art has the following disadvantages: In a small-sized high-resolution panel, the pixel liquid crystal which is set by the conventional method is low in efficiency, and the vertical alignment (VA) display mode is not generally used.
  • the present invention proposes a liquid crystal display panel manufactured by a novel pixel design method suitable for a vertical alignment (VA) display mode, which narrows the dark line caused in the prior art.
  • the liquid crystal display panel according to the present invention can improve the liquid crystal efficiency of a pixel, and broaden the application range of the vertical alignment (VA) display mode in a small-sized high-resolution panel.
  • the present invention provides a liquid crystal display panel comprising an array substrate and a color filter substrate, wherein a liquid crystal layer is interposed between the array substrate and the color filter substrate, wherein the pixel electrode of the array substrate
  • the multi-domain structure includes a main thousand portion and a branch portion, and a common electrode of the color filter substrate is provided with a slit. This slit can narrow the dark line caused in the prior art. In this way, the technical solution improves liquid crystal efficiency, light transmittance, ultraviolet curing speed, and response time.
  • the slit corresponds to the main thousand portion setting.
  • Embodiment 3 modified according to Embodiment 1 or 2, the shape of the slit coincides with the shape of the trunk portion. In this way, the effect of narrowing the dark line is optimal.
  • the slit includes one or more first slits extending in a first direction and one or more seconds extending in a second direction a slit, the first direction being perpendicular to the second direction.
  • Embodiment 5 which is improved according to any one of Embodiments 4 to 4, the slit is formed in a zigzag shape or a double cross shape.
  • Embodiment 6 which is improved according to any one of Embodiments 1 to 4, the slit is presented in a king shape or a double king shape.
  • Such an embodiment is particularly suitable for liquid crystal display panels provided with multi-domain electrodes.
  • Embodiment 7 modified according to any one of Embodiments i to 6, a bridge is provided between different portions of the common electrode divided by slits. Bridging reduces the increase caused by setting the gap The resistor further optimizes the liquid crystal display panel. This technical solution improves the resistance, image uniformity, charging properties, and transmittance of the common electrode.
  • Embodiment 8 modified according to any one of Embodiments 7 to 7, the slit has a width in the range of 3 ⁇ to 5 ⁇ . The benefits are described below in conjunction with the chart.
  • the slit has a width in the range of 4 ⁇ to 5 ⁇ m.
  • the multi-domain structure is four domains or eight domains.
  • the invention improves the width of the dark line caused by the prior art by improving the common electrode of the color filter substrate by dividing the gap, thereby improving the liquid crystal efficiency of the pixel in the vertically aligned display mode and widening the vertical alignment.
  • Display mode is used in high resolution LCD panels.
  • the modified embodiment according to the present invention by providing a bridge between the portions of the common electrode divided by the gap, the increased resistance caused by the provision of the gap is reduced, and the common electrode of the liquid crystal display panel is further optimized.
  • FIG. 1 is a schematic view showing a pixel electrode structure of a thin film transistor (TFT) array substrate of a liquid crystal display panel in the prior art
  • FIG. 2 is a schematic view showing a common electrode structure of a color filter substrate (CF) of a liquid crystal display panel in the prior art
  • FIG. 3 is a view showing an optical effect of an electrode structure of the liquid crystal display panel shown in FIGS. 1 and 2; and
  • FIG. 4 is a view showing a pixel electrode structure of a thin film transistor (TFT) array substrate of a liquid crystal display panel according to the present invention;
  • TFT thin film transistor
  • FIG. 5 is a schematic view showing a common electrode structure of a color filter substrate (CF) of a liquid crystal display panel according to the present invention
  • FIG. 6 is a view showing an electrode and an effect diagram of a liquid crystal display panel according to the present invention
  • Figure 7 is a view showing a display size of a liquid crystal display panel according to the present invention for explaining liquid crystal efficiency in conjunction with the specification;
  • Figure 8 is a view showing the liquid crystal alignment effect caused by the liquid crystal display panel according to the present invention.
  • Figure 9 shows the light transmittance and azimuth angle of a new pixel brought by the liquid crystal display panel according to the present invention.
  • Fig. 10 shows a partially modified embodiment of a common electrode of a liquid crystal display panel according to the present invention
  • Fig. 11 shows a partially modified embodiment of a common electrode of a liquid crystal display panel according to the present invention.
  • the same components are denoted by the same reference numerals. The drawings are not drawn to the actual ratio. detailed description
  • Fig. 4 is a view showing the structure of a pixel electrode of a thin film transistor (TFT) array substrate of a liquid crystal display panel according to the present invention.
  • the pixel electrode is disposed on a side of the liquid crystal layer on which the thin film transistor is provided for the array substrate.
  • the pixel electrode of the thin film transistor (TFT) array substrate is designed to be "fishbone", that is, the entire electrode is divided into a plurality of display areas by vertically intersecting strip-shaped main electrode portions, and each display area is arranged to be spaced apart from each other. Strip-shaped branch electrodes.
  • Fig. 5 is a view showing the structure of a common electrode of a color filter substrate (CF) of a liquid crystal display panel according to the present invention.
  • the common electrode is disposed on a side of the liquid crystal layer provided with a color filter (CF).
  • the common electrode has a slit that divides the common electrode into different portions. The slit may be provided corresponding to the strip-shaped stem electrode portion of the pixel electrode shown in Fig. 4.
  • the slit may include one or more first slits extending in a first direction and one or more second slits extending in a second direction, the first direction being perpendicular to the second direction.
  • the shape of the slit coincides with the shape of the strip-shaped trunk electrode portion of the pixel electrode shown in Fig. 4.
  • the slit may, for example, comprise two intersecting, in particular perpendicular, linear slits.
  • Fig. 6 shows an electrode and an effect diagram of a liquid crystal display panel according to the present invention.
  • the keel of all pixels ie, the main thousand of the pixel electrode
  • Tnmkwidth As the width of the slit of the common electrode increases, the width of the dark line decreases. When there is no slit, the width of the dark line is 7 4 ⁇ m ; when the width of the slit is 3 ⁇ m , the width of the dark line is 4.2 ⁇ m ; and when the width of the slit is 5 ⁇ m, the width of the dark line is 2 ⁇ m.
  • Production process, CF The slit of the side common electrode requires an additional mold.
  • the slit width of the common electrode is 4 m, it is also effective.
  • Fig. 7 is a view showing a display size of a liquid crystal display panel according to the present invention.
  • the liquid crystal efficiency will be described below in conjunction with the figure, where w is the display width, 1 is the display length, and d is the dark line width.
  • the liquid crystal (LC) efficiency of the non-keel portion is 100%, and the liquid crystal (LC) efficiency of the keel portion is zero.
  • Fig. 8 shows the liquid crystal alignment effect caused by the liquid crystal display panel according to the present invention. It can be seen that as the width of the slit increases, the transmittance curve becomes narrow and sharp. The slit width strongly affects the electric field near the ITO and affects the orientation of the liquid crystal.
  • Figure 9 shows the transmittance and azimuth of a new pixel brought about by the liquid crystal display panel according to the present invention; it can be seen that as the width of the slit increases, the width of the dark line decreases.
  • the dark line mainly depends on the orientation of the liquid crystal
  • the F table can be used to explain the effects brought about by the liquid crystal display panel according to the present invention.
  • Figures 10 and 11 show a partially modified embodiment of a common electrode in accordance with the present invention.
  • Figure 10 shows the slit pattern for the 4-domain common electrode.
  • the slits may appear in a cross or a chevron shape.
  • Figure l i shows the slit pattern for the 8-domain common electrode.
  • the slit can be presented as a double cross or a double king.
  • bridging can be provided between the different portions of the common electrode divided by the slits, as shown in Figs. 10 and 11.
  • the improved scheme can improve the following properties of the common electrode: resistance of the common electrode, image uniformity, charging property, and transmittance.

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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)
  • Geometry (AREA)
  • Liquid Crystal (AREA)

Abstract

一种液晶显示面板，包括阵列基板和彩膜基板，液晶层夹置于阵列基板和彩膜基板之间，其中，阵列基板的像素电极具有多域结构，多域结构包括主干部分和分支部分，彩膜基板的公共电极设置有狭缝。该狭缝能够使得暗线变窄。通过间隙将彩膜基板上的公共电极分割，以此大幅度降低了暗线的宽度，改善了垂直对齐模式的像素的液晶效率，扩宽了垂直对齐模式在高分辨率液晶面板中的使用。

Description

种液晶显示面板 技术领域
本发明涉及液晶显示技术领域， 特别是涉及一种改善液晶效率的液晶显示 面板。 背景技术
液晶显示器以其高显示品质、 价格低廉、 携带方便等优点， 成为移动通讯 设备、 个人电脑、 电视机等的显示终端。
目前普遍采用的液晶显示器通常由上下衬底和中间液晶层组成， 衬底由玻 璃和电极等组成。
如果上下衬底都具有电极， 可以形成纵向电场模式的显示器， 例如扭曲向 列 ( Twist N瞧 tic, TN)模式、 垂直对齐 (Vertical Alignment, VA)模式， 以及 为了解决视角过窄而研发的多域垂直对齐 ( Multidomain Vertical Alignment,
MVA) 模式。
另外一种类型与上述显示器不同， 其电极只位于衬底的一侧， 形成横向电 场模式的显示器，例如共面转换（In-piane switching, IPS)模式、边缘场开关（Fringe Field Switching, FFS) 模式等。
垂直对齐 （VA) 模式的薄膜晶体管显示器， 以其高开口、 高分辨率、 广视 角等特点而为液晶电视等大尺寸面板所采用， 但在小尺寸高分辨率的面板中， 使 ]¾传统方法设计的像素液晶效率低， 并未普遍采用垂直对齐 （VA ) 模式。
对于垂直对齐 （VA) 模式的显示器而言， 传统的液晶显示面板的电极如图 〗和图 2所示。 参照图】， 在传统的液晶显示面板中， 薄膜晶体管 （TFT) 阵列基 板的像素电极设 if为 "鱼骨状" ， 即通过垂直相交的条状主干电极 （龙骨） 将整 个电极分割为多个显示区域， 每个显示区域中布置有彼此间隔开的条状的分支电 极； 参照图 2， 在传统的液晶显示面板中， 彩膜基板 （CF) 的电极为通常的膜形 状， 作为像素的公共电极。
使用上述电极得到的像素， 其光学表现如图 3 所示。 其缺点是在像素的中 间区域处， 于液晶取向平行于偏光片的穿透轴或吸收轴， 该中间区域会出现垂 直相交的两条暗线。 通过缩短薄膜晶体管 （TFT) 阵列基板像素电极的条形主干 电极的宽度， 暗线的宽度可以得到缩短， 但是现有技术中的液晶显示面板的电极 所导致的暗线的宽度 然较宽， 影响液晶效率。 发明內容
根据前文的介绍， 现有技术中存在如下不足： 即在小尺寸高分辨率面板中， 使用传统方法设†的像素液晶效率低，也并未普遍采用垂直对齐（VA)显示模式。 本发明提出了一种采用新型的适用于垂直对齐（VA)显示模式的像素设计方法所 制造的液晶显示面板， 使得现有技术中造成的暗线变窄。 根据本发明的液晶显示 面板可以提高像素的液晶效率， 拓宽垂直对齐（VA )显示模式在小尺寸高分辨率 面板中的应用范围。
本发明提出了实施方案 1： 一种液晶显示面板，其包括阵列基板和彩膜基板， 液晶层夹置于所述阵列基板和所述彩膜基板之间， 其中， 所述阵列基板的像素电 极具有多域结构， 所述多域结构包括主千部分和分支部分， 所述彩膜基板的公共 电极设置有狭缝。 该狭缝能够使得现有技术中造成的暗线变窄。 以此方式， 该技 术方案改善了液晶效率、 透光率、 紫外线固化速度以及响应时间。
在根据实施方案 i所改进的实施方案 2中，所述狹缝对应于所述主千部分设 置。
在根据实施方案 1或 2所改进的实施方案 3中，所述狭缝的形状与所述主干 部分的形状相吻合。 如此地， 窄化暗线的效果为最佳。
在根据实施方案 1到 3中任一个所改进的实施方案 4中，所述狭缝包括沿第 一方向延伸的一个或多个第一狭缝和沿第二方向延伸的一个或多个第二狭缝， 所 述第一方向垂直于所述第二方向。
在根据实施方案〗到 4中任一个所改进的实施方案 5中，所述狭缝呈现为十 字形或双十字形。 在根据实施方案 1到 4中任一个所改进的实施方案 6中， 所述 狭缝呈现为王字形或双王字形。 此类实施方案尤其适合于设有多域电极的液晶显 示面板。
在根据实施方案 i到 6中任一个所改进的实施方案 7中，在所述公共电极的 由狹缝所分割的不同部分之间设置有桥接。 桥接降低了设置间隙所导致的增大的 电阻， 进一步优化了液晶显示面板。 该技术方案改善了公共电极的电阻、 图像均 匀度、 充电性质以及透光度。
在根据实施方案〗到 7中任一个所改进的实施方案 8中，所述狭缝的宽度处 于 3μη 到 5μηι的范围內。 其有益效果在下文将结合图表说明。
在根据实施方案 1到 8中任一个所改进的实施方案 9中，所述狭缝的宽度处 于 4μΐϋ到 5μπι的范围 W。
在根据实施方案 1到 9中任一个所改进的实施方案 10中， 所述多域结构为 四域或八域。
本发明通过改善彩膜基板的公共电极，通过间隙将其分割， 以此大幅度降低 了现有技术所造成的暗线的宽度， 改善了垂直对齐显示模式的像素的液晶效率， 扩宽了垂直对齐显示模式在高分辨率液晶面板中的使用。
在根据本发明的改进的实施方案中，通过在公共电极的被间隙所分割的部分 之间设置桥接， 降低了设置间隙导致的增大的电阻， 进一歩优化了液晶显示面板 的公共电极。
上述技术特征可以各种适合的方式组合或由等效的技术特征来替代，只要能 够达到本发明的目的。 附图说明
在下文中将基于仅为非限定性的实施例并参考附图来对本发明迸行更详细 的描述。 其中- 图 1显示了现有技术中的液晶显示面板的薄膜晶体管（TFT)阵列基板的像 素电极结构的示意图；
图 2显示了现有技术中的液晶显示面板的彩膜基板 （CF) 的公共电极结构 的示意图；
图 3显示了图 1和图 2所示的液晶显示面板的电极结构的光学效果图； 图 4显示了根据本发明的液晶显示面板的薄膜晶体管（TFT)阵列基板的像 素电极结构的示意图；
图 5显示了根据本发明的液晶显示面板的彩膜基板 （CF) 的公共电极结构 的示意图- 图 6显示了根据本发明的液晶显示面板的电极和效果图； 图 7 显示了根据本发明的液晶显示面板的显示尺寸图， 用于结合说明书说 明液晶效率；
图 8显示了根据本发明的液晶显示面板造成的液晶排列效果；
图 9 显示了通过根据本发明的液晶显示面板带来的新像素的透光率和方位 角；
图 10显示了根据本发明的液晶显示面板的公共电极的部分改进的实施例； 图 11显示了根据本发明的液晶显示面板的公共电极的部分改迸的实施例。 在图中， 相同的构件由相同的對图标记标示。 附图并未按照实际的比 ^绘 制。 具体实施方式
下面将参照附图来详细地介绍本发明。
图 4显示了根据本发明的液晶显示面板的薄膜晶体管 （TFT) 阵列基板的像 素电极结构的示意图。 该像素电极设置在液晶层的设有薄膜晶体管的一侧， 用于 阵列基板。 该薄膜晶体管 （TFT) 阵列基板的像素电极设计为 "鱼骨状" ， 即通 过垂直相交的条状主千电极部分将整个电极分割为多个显示区域， 每个显示区域 中布置有彼此间隔开的条状的分支电极。
图 5 显示了根据本发明的液晶显示面板的彩膜基板 （CF) 的公共电极的结 构示意图。 所述公共电极设置在液晶层的设有彩色滤光片 （CF) 的一侧。 所述公 共电极具有狭缝， 所述狭缝将所述公共电极分为不同的部分。 所述狹缝可以对应 于图 4所示的像素电极的条状主干电极部分而设置。
所述狭缝可以包括沿第一方向延伸的一个或多个第一狭缝和沿第二方向延 伸的一个或多个第二狭缝， 所述第一方向垂直于所述第二方向。
在图 5所示的实施例中，所述狭缝的形状与图 4所示的像素电极的条状主干 电极部分的形状相物合。 狭缝例如可以包括两条相交的、 尤其是相互垂直的直线 型狭缝。
图 6 显示了根据本发明的液晶显示面板的电极和效果图。 所有像素的龙骨 (即像素电极的主千部分） 宽度 （Tnmkwidth) 为 9μηι。 随着公共电极的狭缝的 宽度增加， 暗线的宽度减少。 没有狹缝时， 暗线宽度为 7 4μπι; 狹缝宽度为 3μπι 时， 暗线宽度为 4.2μηι; 狭缝宽度为 5μιη时， 暗线宽度为 2μηι。 制作工艺上， CF 侧公共电极的狭缝需要另外的模子。
例如当公共电极的狭缝宽度为 4 m时， 也能够带来效果。
图 7显示了根据本发明的液晶显示面板的显示尺寸图。 下面结合图 Ί来说 明液晶效率， 其中 w为显示宽度， 1为显示长度， d为暗线宽度。
Figure imgf000007_0002
, , 、 —h- I w - (/ + >v) X d + dl
效卒 X
/ X W 根据模拟， 无狭缝 ITO的 dmax=4 m, 带狹缝 ITO的 dmax=2^mi。
非龙骨部分的液晶 (LC)效率为 100%, 龙骨部分的液晶 (LC)效率为 0。 图 8 显示了根据本发明的液晶显示面板造成的液晶排列效果。 可见随着狭 缝的宽度增加， 透光度曲线变得狹窄而尖锐。狭缝宽度强烈影响着 ITO附近的电 场， 并旦影响着液晶的定向。
图 9 显示了通过根据本发明的液晶显示面板带来的新像素的透光度和方位 角； 可见随着狭缝的宽度增加， 暗线的宽度降低。 暗线主要取决于液晶定向的方
Figure imgf000007_0001
F表可用来解释根据本发明的液晶显示面板所带来的效果。
Figure imgf000007_0003
在表格中， X： 极差； 稍差； ο : —般； 较好。 可见带狭缝的〗 TO设计可以改善如下性能： 液晶效率、 透光率、 紫外线固 化速度以及响应时间。
图 10和图 11显示了根据本发明的公共电极的部分改进的实施例。
图 10显示了 4域公共电极的狭缝样式。 狭缝可以呈现为十字形或王字形。 图 l i显示了 8域公共电极的狭缝样式。 狭缝可以呈现为双十字形或双王字 形。
由于狭缝的设置会相应导致电极电阻的升高， 为了更加优化电极， 可以在公 共电极的由狹缝所分割的不同部分之间设置桥接， 如图 10和图 11所示。
下表可用来解释根据本发明的公共电极的优选的实施例所带来的效果。
Figure imgf000008_0001
在表格中， X： 极差； 稍差； ο: —般； 较好。
可见改进的方案可以改善公共电极的如下性能： 公共电极的电阻、 图像均 匀度、 充电性质以及透光度。
虽然已经参考优选实施例对本发明进行了描述， 但在不脱离本发明的范围 的情况下， 可以对其进行各种改迸并且可以 ffl等效物替换其中的部件。 本发明并 不局限于文中公开的特定实施例， 而是包括落入权利要求的范围内的所有技术方

Claims

权利要求书
L ·种液晶显示面板， 其包括阵列基板和彩膜基板， 液晶层夹置于所述阵列基板 和所述彩膜基板之间， 其中， 所述阵列基板的像素电极具有多域结构， 所述多域 结构包括主千部分和分支部分， 所述彩膜基板的公共电极设置有狭缝。
2. 根据权利要求 1所述的液晶显示面板， 其中， 所述狭缝对应于所述主千部分设 置。
3. 根据权利要求 2所述的液晶显示面板， 其中， 所述狭缝的形状与所述主千部分 的形状相吻合。
4. 根据权利要求 1所述的液晶显示面板， 其中， 所述狹缝包括沿第一方向延伸的 个或多个第一狭缝和沿第二方向延伸的一个或多个第二狭缝， 所述第一方向垂 直于所述第二方向。
5. 根据权利要求 2所述的液晶显示面板， 其中， 所述狭缝包括沿第一方向延伸的 一个或多个第一狭缝和沿第二方向延伸的一个或多个第二狭缝， 所述第一方向垂 直于所述第二方向。
6. 根据权利要求 3所述的液晶显示面板， 其中， 所述狭缝包括沿第一方向延伸的 一个或多个第一狭缝和沿第二方向延伸的一个或多个第二狭缝， 所述第一方向垂 直于所述第二方向。
7. 根据权利要求 1所述的液晶显示面板， 其中， 所述狭缝呈现为十字形或双十字 形。
8. 根据权利要求 2所述的液晶显示面板， 其中， 所述狹缝呈现为十字形或双十字 形》
9. 根据权利要求 3所述的液晶显示面板， 其中， 所述狭缝呈现为十字形或双十字 形。
〗0. 根据权利要求 1所述的液晶显示面板， 其中， 所述狭缝呈现为王字形或双王 字形。
： i i. 根据权利要求 2所述的液晶显示面板， 其中， 所述狭缝呈现为王字形或双王 字形。
12. 根据权利要求 3所述的液晶显示面板， 其中， 所述狭缝呈现为王字形或双 ΐ 字形。 】3. 根据权利要求 1所述的液晶显示面板， 其中， 在所述公共电极的 ώ狭缝所分 害 不同部分之间设置有桥接。
】4. 根据权利要求 2所述的液晶显示面板， 其中， 在所述公共电极的 ώ狭缝所分 害撤不同部分之间设置有桥接。
15. 根据权利要求 3所述的液晶显示面板， 其中， 在所述公共电极的由狭缝所分 割的不同部分之间设置有桥接。
16. 根据权利要求 1所述的液晶显示面板，其中，所述狹缝的宽度处于 3μιη到 5μπι 的范围内。
17. 根据权利要求 2所述的液晶显示面板,其中，所述狭缝的宽度处于 3μιη到 5μίη 的范围内。
18. 根据权利要求 3所述的液晶显示面板,其中，所述狭缝的宽度处于 3μιη到 5皿 的范围内。
19. 根据权利要求 16所述的液晶显示面板， 其中， 所述狭缝的宽度处于 4M.m到 5μΐΉ的范围內。
20. 根据权利要求 1所述的液晶显示面板， 其中， 所述多域结构为四域或八域。
PCT/CN2014/071091 2013-08-09 2014-01-22 一种液晶显示面板 Ceased WO2015018191A1 (zh)

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