WO2019056678A1 - 一种液晶显示装置 - Google Patents

一种液晶显示装置 Download PDF

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Publication number
WO2019056678A1
WO2019056678A1 PCT/CN2018/073365 CN2018073365W WO2019056678A1 WO 2019056678 A1 WO2019056678 A1 WO 2019056678A1 CN 2018073365 W CN2018073365 W CN 2018073365W WO 2019056678 A1 WO2019056678 A1 WO 2019056678A1
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Prior art keywords
electrode
liquid crystal
display device
crystal display
insulating layer
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PCT/CN2018/073365
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English (en)
French (fr)
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时陶
陈钢
王志军
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南京中电熊猫液晶显示科技有限公司
南京中电熊猫平板显示科技有限公司
南京华东电子信息科技股份有限公司
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Priority claimed from CN201710850463.0A external-priority patent/CN107544183B/zh
Priority claimed from CN201710850682.9A external-priority patent/CN107664880B/zh
Application filed by 南京中电熊猫液晶显示科技有限公司, 南京中电熊猫平板显示科技有限公司, 南京华东电子信息科技股份有限公司 filed Critical 南京中电熊猫液晶显示科技有限公司
Publication of WO2019056678A1 publication Critical patent/WO2019056678A1/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

Definitions

  • the present application relates to the field of display, and in particular to a liquid crystal display device. .
  • the liquid crystal display device is currently the most widely used flat panel display device, and the FFS (Fringe Field Switching) liquid crystal display device is popular among users because of its wide viewing angle and high aperture ratio.
  • FFS Flexible Field Switching
  • the FFS liquid crystal display device generally includes an array substrate 200 and a color filter substrate 300 disposed opposite to each other, and a liquid crystal molecular layer 30 disposed between the array substrate 200 and the color filter substrate 300.
  • the array substrate 200 is generally provided with a first electrode 40 that is flattened over the entire surface of the glass substrate 10 and a second electrode 50 that has a slit structure.
  • the insulating layer 60 is disposed between the first electrode 40 and the second electrode 50.
  • the color filter substrate 300 is provided with a color resist layer 90, a black matrix 80, and a flat layer 100 on the glass substrate 20.
  • a transparent conductive material ITO (Indium Tin Oxide) 70 is plated on the back surface of the color filter substrate 300 to shield an external electric field from being prevented.
  • ITO Indium Tin Oxide
  • the role of electrostatic mura Generally, an FFS liquid crystal display panel, when a voltage is applied to drive to a white state, as the voltage increases, the electric field at the edge of the second electrode causes the liquid crystal here to be excessively twisted, so that dark lines appear here to cause a decrease in overall transmittance.
  • 2a-2c are simulations of the transmittance of each point of the panel under different voltages, the abscissa is the position of the point on the panel, and the ordinate is the transmittance of the panel.
  • An object of the present invention is to reduce a fringe field effect during display by forming a second electrode having a slit structure in an array substrate of a liquid crystal display device through a halftone mask, thereby improving the liquid crystal display device. Over rate.
  • the present invention provides a liquid crystal display device comprising an array substrate and a color filter substrate disposed opposite to each other, and a liquid crystal sandwiched between the array substrate and the color filter substrate, wherein the array substrate is provided with a first electrode and a second electrode, and is located at the first An insulating layer between the electrode and the second electrode, the second electrode is disposed on a side close to the liquid crystal and the second electrode has a slit structure, and the second electrode has a step structure.
  • the method further includes: at least one groove disposed in the insulating layer, the step structure comprises at least one second portion located in the groove and a first portion located on the insulating layer, a height of a plane where the first portion is located Higher than the height of the plane in which the second part is located.
  • the step structure has a convex shape, and the second portion and the groove are respectively provided with two, each second portion is located in one groove, and the first portion is located in two second portions. between.
  • the step structure is stepped, and the second portion and the groove are each provided with one.
  • the insulating layer has a flat surface, and the stepped structure is located above the insulating layer.
  • the step structure is convex.
  • the step structure is stepped.
  • the step structure is a stepped or two stepped structure.
  • the first electrode is one of a common electrode or a pixel electrode
  • the second electrode is the other of the common electrode or the pixel electrode.
  • the step structure is formed by a halftone mask method.
  • the materials of the first electrode and the second electrode are both ITO.
  • the difference in height of the second electrode is different, thereby reducing the fringe field effect during display and improving the transmittance of the liquid crystal display device.
  • FIG. 1 is a schematic structural view of a conventional FFS liquid crystal display device
  • 2a-2c are simulation diagrams of transmittance of each point of the panel under different voltages
  • FIG. 3 is a top plan view of a pixel unit of an array substrate according to an embodiment of a liquid crystal display device of the present invention
  • FIG. 4 is a cross-sectional structural view showing a liquid crystal display device according to an embodiment of the present invention.
  • FIG. 5 is a simulation diagram of transmittance of a liquid crystal display device according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of a pixel unit of an array substrate according to Embodiment 2 of the liquid crystal display device of the present invention.
  • FIG. 7 is a cross-sectional structural view showing a second embodiment of a liquid crystal display device of the present invention.
  • FIG. 8 is a top plan view of a pixel unit of an array substrate according to Embodiment 3 of the liquid crystal display device of the present invention.
  • FIG. 9 is a cross-sectional structural view showing a third embodiment of a liquid crystal display device of the present invention.
  • FIG. 10 is a simulation diagram of transmittance of a third embodiment of the present invention and a conventional liquid crystal display device
  • FIG. 11 is a cross-sectional structural view showing a fourth embodiment of a liquid crystal display device of the present invention.
  • FIG. 12 is a cross-sectional structural view showing a fifth embodiment of a liquid crystal display device of the present invention.
  • the present invention provides an FFS liquid crystal display device comprising an array substrate 200 and a color filter substrate 300 disposed opposite to each other, and liquid crystal molecules 30 sandwiched between the array substrate 200 and the color filter substrate 300.
  • 3 is a schematic view of a pixel unit of an array substrate according to an embodiment of a liquid crystal display device of the present invention
  • FIG. 4 is a cross-sectional view taken along line AA' of FIG.
  • the color film substrate 300 is provided with a black matrix 80, a color resist layer 90 and a flat layer 100 on the glass substrate 20.
  • the display brightness unevenness (mura) is also plated on the back surface of the color filter substrate 300 to prevent static electricity.
  • the upper layer of transparent conductive material ITO70 is also plated on the back surface of the color filter substrate 300 to prevent static electricity.
  • the array substrate 200 includes criss-crossing scan lines and data lines on the glass substrate 10, pixel regions defined by interlacing scan lines and data lines, TFT switches at intersections of scan lines and data lines, first electrodes 40, and The second electrode 51 and the insulating layer 60 between the first electrode 40 and the second electrode 51.
  • the first electrode 40 is entirely flat on the glass substrate 10 of the array substrate (the first electrode 40 may also be disposed only in the pixel region according to actual design requirements), and the first electrode 40 may be located according to design requirements.
  • the data line can also be located on the scan line.
  • the second electrode 51 is adjacent to the liquid crystal layer 30 side, and the second electrode 51 has a slit structure, that is, there is a gap between the second electrodes, and the second electrode 51 is located in the pixel region.
  • a fringe electric field that drives the liquid crystal molecules 30 is generated between the first electrode 40 and the second electrode 51.
  • the second electrode has a step structure, and the step structure means that the different segments of the second electrode have a height difference in a direction perpendicular to the slit.
  • the step structure may be implemented in different manners.
  • the second electrode having the stepped structure may be formed by using an insulating layer having a height difference.
  • the step structure is formed by using an insulating layer having a height difference in combination with a specific embodiment. Describe.
  • the insulating layer 60 is provided with two grooves, and the second electrode 51 includes two second portions 512 and a first portion 511 between the two second portions 512, each of the second portions 512 being located The first portion 511 is located on the insulating layer 60 in a recess.
  • the second electrode 51 has a convex shape, and the height of the plane of the first portion 511 is higher than the height of the plane of the second portion 512, that is, the first portion 511 of the second electrode 51 is higher than the second portion 512 located at two sides of the first portion 511, forming A step structure.
  • the first electrode 40 is a common electrode
  • the second electrode 51 is a pixel electrode
  • the first electrode 40 is a pixel electrode
  • the second electrode 51 is a common electrode.
  • the first electrode 40 and the second electrode 51 are both indium tin metal oxide (ITO).
  • the convex second electrode 51 can be formed by a halftone mask.
  • 5 is a simulation diagram of transmittance of a liquid crystal display device according to Embodiment 1 of the present invention.
  • the transmittance of the liquid crystal display device at the edge of the second electrode 51 is 0.140738, and the liquid crystal display of the structure of Embodiment 1 is used.
  • the transmittance of the device is 0.142997. It can be seen that by forming the second electrode having the slit structure in the array substrate into different step structures, the fringe field effect during display can be reduced, and the transmittance of the liquid crystal display device can be improved. .
  • FIG. 6 is a schematic diagram of a pixel unit of an array substrate according to a second embodiment of the present invention
  • FIG. 7 is a schematic structural view of a second embodiment of the liquid crystal display device according to the present invention.
  • the second embodiment is different from the first embodiment in that one side of the second electrode 52 is
  • the insulating layer 60 is provided with a recess, and the second electrode 52 includes a first portion 521 on the insulating layer and a second portion 522 located in the recess.
  • the second electrode 52 is stepped, that is, the first portion 521 of the second electrode 52. It is higher than the second portion 522 located on one side of the first portion.
  • the stepped second electrode can also be formed by a halftone mask.
  • the first portion and the second portion of the second electrode are formed with a height difference, thereby reducing the fringing field effect during display and improving the liquid crystal display.
  • the transmittance of the device by providing a groove on the insulating layer of the array substrate, the first portion and the second portion of the second electrode are formed with a height difference, thereby reducing the fringing field effect during display and improving the liquid crystal display. The transmittance of the device.
  • a second electrode having a height difference may be formed on the insulating layer having a substantially flat surface, that is, on the insulating layer having no height difference, and the insulating layer on the flat surface will be combined with the specific embodiment below.
  • the step formation structure is described above. .
  • FIG. 8 is a schematic view of a pixel unit of an array substrate of a liquid crystal display device of the present invention
  • FIG. 9 is a cross-sectional view taken along line AA' of FIG.
  • the surface of the insulating layer 60 between the first electrode 40 and the second electrode 51 is substantially flat, and the second electrode 51 on the insulating layer 60 itself has a step structure.
  • the step structure is convex, that is, the central area of the second electrode is higher than the side edge areas of the second electrode.
  • the first electrode 40 is a common electrode
  • the second electrode 51 is a pixel electrode
  • the first electrode 40 is a pixel electrode
  • the second electrode 51 is a common electrode.
  • the first electrode 40 and the second electrode 51 are both indium tin metal oxide ITO.
  • the embossed step structure can be formed by a halftone mask.
  • 10 is a simulation diagram of transmittance of a liquid crystal display device according to Embodiment 3 of the present invention.
  • the transmittance of the liquid crystal display device at the edge of the second electrode is 0.140738, and the liquid crystal display device of the first embodiment is used.
  • the transmittance is 0.142492. It can be seen that by forming the second electrode having the slit structure in the array substrate into a step structure, the fringe field effect during display can be reduced, and the transmittance of the liquid crystal display device can be improved.
  • FIG. 11 is a schematic structural view of a liquid crystal display device according to a fourth embodiment of the present invention.
  • FIG. 12 is a schematic structural view of a liquid crystal display device according to a fifth embodiment of the present invention.
  • the fourth embodiment and the fifth embodiment are different from the third embodiment:
  • the step structure of the second electrodes 52, 53 is formed in a stepped shape, that is, the thickness of the second electrode increases from the one end of the second electrode to the other end of the second electrode, and the step structure is one step or two stages. Stepped structure or multi-stepped structure.
  • the stepped step structure can also be formed by a halftone mask.
  • the second electrode of the stepped structure is formed on the surface of the planar insulating layer of the array substrate, so that different segments of the second electrode have a height difference, thereby reducing the fringe field effect during display and improving The transmittance of the liquid crystal display device.
  • the second electrode having the slit structure in the array substrate of the liquid crystal display device can be formed into a step structure by using a halftone mask, thereby reducing the fringe field effect during display and improving the liquid crystal display device. Transmittance.

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  • Mathematical Physics (AREA)
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Abstract

一种液晶显示装置，包括相对设置的阵列基板（200）和彩膜基板（300）、以及夹在阵列基板（200）与彩膜基板（300）之间的液晶分子（30），其中阵列基板（200）上设有第一电极（40）和第二电极（51）、以及位于第一电极（40）和第二电极（51）之间的绝缘层（60），第二电极（51）设置于靠近液晶一侧且第二电极（51）具有狭缝结构，第二电极（51）具有段差结构。通过在阵列基板（200）的绝缘层（60）上设置段差结构的第二电极（51），使第二电极（51）不同段具有高度差，以此来减小显示时的边缘场效应，提高液晶显示装置的透过率。

Description

一种液晶显示装置
本申请要求于2017年09月20日提交中国专利局、申请号为201710850463.0、发明名称为“一种液晶显示装置”以及2017年09月20日提交中国专利局、申请号为201710850682.9、发明名称为“一种液晶显示装置”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
本申请涉及显示领域，尤其涉及一种液晶显示装置。。
背景技术
液晶显示装置是目前使用最广泛的一种平板显示装置，其中FFS(Fringe Field Switching，边缘场开关技术)液晶显示装置以其观看视角广以及开口率高等特点受到广大用户的喜爱。
图1为现有FFS液晶显示装置的结构示意图，FFS液晶显示装置通常包括相对设置的阵列基板200和彩膜基板300，以及设置在阵列基板200和彩膜基板300之间的液晶分子层30。其中，阵列基板200一般在玻璃基板10设置有整面平铺的第一电极40以及具有狭缝(slit)结构的第二电极50，第一电极40与第二电极50之间具有绝缘层60。彩膜基板300在玻璃基板20上设有色阻层90、黑色矩阵80以及平坦层100。通常为了防止静电导致的显示亮度不均匀(mura)还会在彩膜基板300的背面镀上一层透明导电材料ITO(Indium Tin Oxide，铟锡金属氧化物)70以起到屏蔽外部电场，防止静电mura的作用。通常FFS液晶显示面板，当施加电压进行驱动到白态时，随着电压的增大，第二电极边缘的电场导致此处的液晶过扭曲，使得此处出现暗纹导致整体透过率降低。图2a-图2c为不同电压下面板各点的透过率模拟图，横坐标为面板上点的位置，纵坐标为面板的透过率。从模拟图来看在3.5V电压时，第二电极边缘的液晶先达到透过率最高状态，待驱动电压继续上升至4.0V和4.5V后，随着第二电极边缘的液晶的过扭曲，导致此处的透过率发生下降。
发明内容
本发明的目的在于通过将液晶显示装置的阵列基板中具有狭缝结构的第 二电极通过半色调掩膜制作成段差结构，以此来减小显示时的边缘场效应，提高液晶显示装置的透过率。
本发明提供一种液晶显示装置，包括相对设置的阵列基板和彩膜基板、以及夹在阵列基板与彩膜基板的液晶，其中阵列基板上设有第一电极和第二电极、以及位于第一电极和第二电极之间的绝缘层，第二电极设置于靠近液晶一侧且第二电极具有狭缝结构，所述第二电极具有段差结构。
可选地，还包括：设置于所述绝缘层中的至少一个凹槽，所述段差结构包括位于凹槽内的至少一个第二部分和位于绝缘层上的第一部分，第一部分所在平面的高度高于第二部分所在平面的高度。
可选地，所述段差结构呈凸字形，所述第二部分和所述凹槽均设有两个，每个第二部分位于一个凹槽内，所述第一部分位于两个第二部分之间。
可选地，所述段差结构呈台阶状，所述第二部分和所述凹槽均设有一个。
可选地，所述绝缘层具有平整表面，所述段差结构位于所述绝缘层之上。
可选地，所述段差结构呈凸字形。
可选地，所述段差结构呈台阶状。
可选地，所述段差结构为一级台阶状或者两级台阶状结构。
可选地，所述第一电极为公共电极或像素电极中的一个，所述第二电极为公共电极或像素电极中的另一个。
可选地，所述段差结构通过半色调掩膜法制作形成。
可选地，所述第一电极和第二电极的材料均为ITO。本发明通过在阵列基板的绝缘层上设置段差结构的第二电极，使第二电极不同段具有高度差，以此来减小显示时的边缘场效应，提高液晶显示装置的透过率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为现有FFS液晶显示装置的结构示意图；
图2a-图2c为不同电压下面板各点的透过率模拟图；
图3为本发明液晶显示装置实施例一阵列基板像素单元俯视示意图；
图4为本发明液晶显示装置实施例一剖面结构示意图；
图5为本发明实施例一与传统液晶显示装置透过率模拟图；
图6为本发明液晶显示装置实施例二阵列基板像素单元示意图；
图7为本发明液晶显示装置实施例二剖面结构示意图；
图8为本发明液晶显示装置实施例三阵列基板像素单元俯视示意图；
图9为本发明液晶显示装置实施例三的剖面结构示意图；
图10为本发明实施例三与传统液晶显示装置透过率模拟图；
图11为本发明液晶显示装置实施例四的剖面结构示意图；
图12为本发明液晶显示装置实施例五的剖面结构示意图。
具体实施方式
下面结合附图和具体实施例，进一步阐明本发明，应理解这些实施例仅用于说明本发明而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。
本发明提出一种FFS液晶显示装置，包括相对设置的阵列基板200和彩膜基板300，以及夹在阵列基板200和彩膜基板300之间的液晶分子30。图3为本发明液晶显示装置实施例一阵列基板像素单元示意图，图4为图3中沿AA’的剖面图。其中，彩膜基板300为在玻璃衬底20上设有黑色矩阵80、色阻层90和平坦层100，为防止静电导致的显示亮度不均匀(mura)还会在彩膜基板300的背面镀上一层透明导电材料ITO70。
阵列基板200包括位于玻璃衬底10上的纵横交错的扫描线和数据线、由扫描线和数据线交错限定的像素区域、位于扫描线和数据线交叉处的TFT开关、第一电极40、第二电极51、以及位于第一电极40和第二电极51之间的绝缘层60。
其中，第一电极40为整面平铺于阵列基板的玻璃衬底10上(根据实际设计的需求，第一电极40也可仅在像素区域中设置)，第一电极40根据设计 需求可以位于数据线上、也可以位于扫描线上。
第二电极51靠近液晶层30一侧，且第二电极51具有狭缝结构，也就是说，第二电极之间具有缝隙，第二电极51位于像素区域中。在本发明实施例中，第一电极40和第二电极51之间产生驱动液晶分子30的边缘电场。
在本发明实施例中，第二电极具有段差结构，段差结构是指，在沿与狭缝垂直方向上，第二电极的不同段具有高度差。该段差结构可以通过不同的方式实现，在一些实施例中，可以利用具有高度差的绝缘层来形成段差结构的第二电极，以下将结合具体实施例对利用具有高度差的绝缘层形成段差结构进行描述。
实施例一
参考图4所示，绝缘层60上设有两个凹槽，第二电极51包括两个第二部分512和位于两个第二部分512之间的第一部分511，每个第二部分512位于一个凹槽内，第一部分511位于绝缘层60上。
第二电极51呈凸字形，第一部分511所在平面的高度高于第二部分512所在平面的高度，即第二电极51的第一部分511高于位于第一部分511两侧的第二部分512，形成一种段差结构。第一电极40为公共电极，第二电极51为像素电极，也可以是第一电极40为像素电极，第二电极51为公共电极。第一电极40和第二电极51均为铟锡金属氧化物(ITO)。
凸字形第二电极51可以通过半色调掩膜法(halftone)制作形成。图5为本发明实施例一与传统液晶显示装置透过率模拟图，当电压为4.5V时，第二电极51边缘处液晶显示装置的透过率为0.140738，采用实施例一结构的液晶显示装置的透过率为0.142997，可见，通过将阵列基板中具有狭缝结构的第二电极制作成高低不同的段差结构，可减小显示时的边缘场效应，提高了液晶显示装置的透过率。
实施例二
图6为本发明液晶显示装置实施例二阵列基板像素单元示意图，图7为本发明液晶显示装置实施例二结构示意图，实施例二与实施例一的区别在于：第二电极52的一侧的绝缘层60上设有凹槽，第二电极52包括位于绝缘层上的第一部分521和位于凹槽内的第二部分522，第二电极52成台阶状，即第 二电极52的第一部分521高于位于第一部分一侧的第二部分522。台阶状的第二电极也可以通过半色调掩膜法(halftone)制作形成。
本发明一些实施例中，通过在阵列基板的绝缘层上设有凹槽，使第二电极第一部分和第二部分形成有高度差，以此来减小显示时的边缘场效应，提高液晶显示装置的透过率。
在另一些实施例中，可以在具有基本平整表面的绝缘层上，也就是没有高度差的绝缘层上，形成具有高度差的第二电极，以下将结合具体实施例对在平整表面的绝缘层上形成段差结构进行描述。。
实施例三
图8为本发明液晶显示装置阵列基板一像素单元示意图，图9为图8中沿AA’的剖面图。与上述实施例不同的是，该实施例中，第一电极40和第二电极51之间的绝缘层60的表面基本为平整的，绝缘层60上的第二电极51本身具有段差结构。该实施例中，段差结构呈凸字形，即第二电极的中心区域高于第二电极的两侧边缘区域。第一电极40为公共电极，第二电极51为像素电极，也可以是第一电极40为像素电极，第二电极51为公共电极。第一电极40和第二电极51均为铟锡金属氧化物ITO。
凸字形段差结构可以通过半色调掩膜法(halftone)制作形成。图10为本发明实施例三与传统液晶显示装置透过率模拟图，当电压为4.5V时，第二电极边缘处液晶显示装置的透过率为0.140738，采用实施例一结构的液晶显示装置的透过率为0.142492，可见，通过将阵列基板中具有狭缝结构的第二电极制作成段差结构，可减小显示时的边缘场效应，提高了液晶显示装置的透过率。
实施例四和实施例五
图11为本发明液晶显示装置实施例四结构示意图，图12为本发明液晶显示装置实施例五结构示意图，实施例四、实施例五与实施例三的区别在于：也可以将阵列基板上的第二电极52,53的段差结构制作成台阶状，即第二电极的厚度从第二电极的一端至第二电极的另一端呈递增的趋势，所述段差结构为一级台阶状或者两级台阶状结构或者多级台阶状结构。台阶状的段差结构也可以通过半色调掩膜法(halftone)制作形成。
本发明另一些实施例中，通过在阵列基板的平整绝缘层表面上形成段差结构的第二电极，使得第二电极的不同段具有高度差，以此来减小显示时的边缘场效应，提高液晶显示装置的透过率。
本发明实施例中，液晶显示装置的阵列基板中具有狭缝结构的第二电极，可以通过半色调掩膜制作成段差结构，以此来减小显示时的边缘场效应，提高液晶显示装置的透过率。

Claims (11)

  1. 一种液晶显示装置，包括相对设置的阵列基板和彩膜基板、以及夹在阵列基板与彩膜基板的液晶，其中阵列基板上设有第一电极和第二电极、以及位于第一电极和第二电极之间的绝缘层，第二电极设置于靠近液晶一侧且第二电极具有狭缝结构，其特征在于：所述第二电极具有段差结构。
  2. 根据权利要求1所述的液晶显示装置，其特征在于，还包括：设置于所述绝缘层中的至少一个凹槽，所述段差结构包括位于凹槽内的至少一个第二部分和位于绝缘层上的第一部分，第一部分所在平面的高度高于第二部分所在平面的高度。
  3. 根据权利要求2所述的液晶显示装置，其特征在于：所述段差结构呈凸字形，所述第二部分和所述凹槽均设有两个，每个第二部分位于一个凹槽内，所述第一部分位于两个第二部分之间。
  4. 根据权利要求2所述的液晶显示装置，其特征在于：所述段差结构呈台阶状，所述第二部分和所述凹槽均设有一个。
  5. 根据权利要求1所述的液晶显示装置，其特征在于：所述绝缘层具有平整表面，所述段差结构位于所述绝缘层之上。
  6. 根据权利要求5所述的液晶显示装置，其特征在于：所述段差结构呈凸字形。
  7. 根据权利要求5所述的液晶显示装置，其特征在于：所述段差结构呈台阶状。
  8. 根据权利要求7所述的液晶显示装置，其特征在于：所述段差结构为一级台阶状或者两级台阶状结构。
  9. 根据权利要求1-8中任一项所述的液晶显示装置，其特征在于：所述第一电极为公共电极或像素电极中的一个，所述第二电极为公共电极或像素电极中的另一个。
  10. 根据权利要求1-8中任一项所述的液晶显示装置，其特征在于：所述段差结构通过半色调掩膜法制作形成。
  11. 根据根据权利要求1-8中任一项所述的液晶显示装置，其特征在于：所述第一电极和第二电极的材料均为ITO。
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