WO2015143735A1 - 液晶显示面板 - Google Patents

液晶显示面板 Download PDF

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Publication number
WO2015143735A1
WO2015143735A1 PCT/CN2014/074760 CN2014074760W WO2015143735A1 WO 2015143735 A1 WO2015143735 A1 WO 2015143735A1 CN 2014074760 W CN2014074760 W CN 2014074760W WO 2015143735 A1 WO2015143735 A1 WO 2015143735A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
glass substrate
substrate
crystal display
display panel
Prior art date
Application number
PCT/CN2014/074760
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English (en)
French (fr)
Inventor
吕城龄
萧宇均
Original Assignee
深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/356,601 priority Critical patent/US20150378203A1/en
Publication of WO2015143735A1 publication Critical patent/WO2015143735A1/zh

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Classifications

    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • 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
    • G02F1/133512—Light shielding layers, e.g. black 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
    • G02F1/1335—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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F1/133302—Rigid substrates, e.g. inorganic substrates
    • 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
    • G02F1/133368—Cells having two substrates with different characteristics, e.g. different thickness or material
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13396—Spacers having different sizes

Definitions

  • the present invention relates to the field of flat display, and in particular to a liquid crystal display panel. Background technique
  • Liquid crystal display has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptop screens. Wait.
  • PDAs personal digital assistants
  • LCD liquid crystal display
  • a conventional liquid crystal panel is composed of a color filter substrate, a thin film transistor array substrate (TFT Array Substrate), and a liquid crystal layer disposed between the two substrates.
  • TFT Array Substrate thin film transistor array substrate
  • the working principle is that the rotation of the liquid crystal molecules of the liquid crystal layer is controlled by applying a driving voltage on the two glass substrates, and the light of the backlight module is refracted to generate a picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module needs to be used to display the image normally.
  • the backlight module becomes one of the key components of the liquid crystal display device.
  • the backlight module is divided into a side-in type backlight module and a direct-type backlight module according to different incident positions of the light source.
  • the direct type backlight module is provided with a light source such as a cathode fluorescent lamp (CCFL) or a light emitting diode (LED) disposed behind the liquid crystal panel, and directly forms a surface light source to be supplied to the liquid crystal panel.
  • the side-lit backlight module has a backlight LED strip (Light bar) disposed at the edge of the back panel behind the liquid crystal panel, and the light emitted by the LED strip is from the side of the light guide plate (LGP). The smooth surface enters the light guide plate, is reflected and diffused, and is emitted from the light exit surface of the light guide plate, and then passes through the optical film group to form a surface light source to be supplied to the liquid crystal panel.
  • CCFL cathode fluorescent lamp
  • LED light emitting di
  • a conventional liquid crystal display panel generally includes a TFT (thin film transistor) substrate 100 , a CF substrate 300 disposed opposite to the TFT substrate 100 , and a liquid crystal layer 500 disposed between the TFT substrate 100 and the CF substrate 300 .
  • the TFT substrate 100 includes a first glass substrate 102 and a thin film transistor array 104 formed on the first glass substrate 102.
  • the CF substrate 300 includes a second glass substrate 302 and a color filter formed on the second glass substrate 302.
  • the light film 304, the thin film transistor array 104 drives the liquid crystal molecules in the liquid crystal layer 500 to be deflected to select light passing through the liquid crystal display panel, and the color filter 304 is used to realize color Color display.
  • the thickness of the first glass substrate and the second glass substrate are both equal to 0.5 mm or 0.7 mm.
  • the cost is low, but since the thickness of the glass substrate is small, in the large-sized liquid crystal display panel, the liquid crystal display panel is deformed due to an external force.
  • a misalignment occurs between the TFT substrate and the CF substrate (refer to FIG. 2, FIG. 3, FIG. 4, and FIG. 5, when a certain force is applied at the application point A, between the TFT substrate and the CF substrate at a measurement point of 8 cm apart)
  • the amount of misalignment is about 13 ⁇ ).
  • the black matrix 306 When the amount of misalignment exceeds the edge of the black matrix 306 (Black Matrix Margin), light leakage occurs, which affects the actual display effect.
  • both the TFT substrate and the CF substrate are 0.5 mm, and the light-shielding width of the data line 106 region is 16 ⁇ m.
  • the black matrix 306 is designed on the data line 106 side.
  • the distribution of the support body (PS) 700 to be disposed is dense (the distribution rate of the main support body 701 is 0.0246%; the distribution ratio of the auxiliary support body 703 is 0.688%). ) (as shown in Figure 6), which is not conducive to cost control.
  • the thicknesses of the first glass substrate and the second glass substrate are both 0.7 mm, although the amount of misalignment is reduced (refer to FIGS. 2 and 3, when a certain force is applied at the application point A, the TFT at the measurement point of 8 cm apart)
  • the amount of misalignment between the substrate and the CF substrate is about 8 ⁇ m, but the material cost is increased, which is not conducive to cost control. Summary of the invention
  • An object of the present invention is to provide a liquid crystal display panel which can effectively reduce the amount of misalignment between a TFT substrate and a CF substrate during stress deformation, reduce light leakage, improve optical taste, and facilitate cost control.
  • a liquid crystal display panel includes: a TFT substrate; a CF substrate disposed opposite to the TFT substrate; and a TFT substrate and a CF substrate liquid crystal layer, wherein the TFT substrate includes a first glass substrate and a thin film transistor array disposed on the first glass substrate, the CF substrate includes a second glass substrate, a black matrix disposed on the second glass substrate, a main support and an auxiliary support, and the first glass substrate It has a different thickness than the second glass substrate.
  • the thickness of the first glass substrate is greater than the thickness of the second glass substrate.
  • the first glass substrate has a thickness of 0.7 mm; and the second glass substrate has a thickness of 0.5 mm.
  • the liquid crystal display panel is a 55-inch liquid crystal display panel, and the width of the black matrix is 30 ⁇ ; the distribution rate of the main support is 0.0123%; the distribution ratio of the auxiliary support is 0.55%.
  • the thickness of the second glass substrate is greater than the thickness of the first glass substrate.
  • the first glass substrate has a thickness of 0.5 mm; and the second glass substrate has a thickness of 0.7 mm.
  • the liquid crystal display panel is a 55-inch liquid crystal display panel, the width of the black matrix is 26.5 ⁇ m; the distribution ratio of the main support is 0.0123%; and the distribution ratio of the auxiliary support is 0.55%.
  • the TFT substrate further includes a first polarizer disposed on a side of the first glass substrate away from the thin film transistor array.
  • the CF substrate further includes a second polarizer disposed on a side of the second glass substrate away from the black matrix.
  • the present invention also provides a liquid crystal display panel, comprising: a TFT substrate, a CF substrate disposed opposite to the TFT substrate, and a liquid crystal layer disposed on the TFT substrate and the CF substrate, wherein the TFT substrate includes a first glass substrate and is disposed at the first a thin film transistor array on a glass substrate, the CF substrate comprising a second glass substrate and a black matrix, a main support and an auxiliary support disposed on the second glass substrate, the first glass substrate and the second glass substrate being different Thickness
  • the thickness of the first glass substrate is greater than the thickness of the second glass substrate.
  • the first glass substrate has a thickness of 0.7 mm; and the second glass substrate has a thickness of 0.5 mm.
  • the liquid crystal display panel is a 55-inch liquid crystal display panel, the width of the black matrix is 30 ⁇ m; the distribution ratio of the main support is 0.0123%; and the distribution ratio of the auxiliary support is 0.55%.
  • the TFT substrate further includes a first polarizer disposed on a side of the first glass substrate away from the thin film transistor array.
  • the CF substrate further includes a second polarizer disposed on a side of the second glass substrate away from the black matrix.
  • the liquid crystal display panel of the present invention can effectively reduce the amount of misalignment between the TFT substrate and the CF substrate when the liquid crystal panel is subjected to force deformation by setting the TFT substrate and the glass substrate of the CF substrate to different thicknesses, and
  • the utility model can effectively reduce the light leakage area, reduce the width of the black matrix, increase the aperture ratio of the liquid crystal display panel, and increase the strength of the liquid crystal display panel, thereby effectively improving the quality of the liquid crystal display panel.
  • FIG. 1 is a schematic cross-sectional structural view of a conventional liquid crystal display panel
  • FIG. 2 is a schematic view showing a force application test on a liquid crystal display panel of an existing equal-thickness glass substrate
  • Figure 3 is a schematic diagram of the test results of Figure 2;
  • FIG. 4 is a schematic view showing light leakage of a liquid crystal display panel of a conventional equal-thickness glass substrate
  • FIG. 5 is a schematic view showing an open area of a liquid crystal display panel of a conventional equal-thickness glass substrate
  • FIG. 6 is a liquid crystal of a conventional equal-thickness glass substrate.
  • FIG. 7 is a schematic cross-sectional structural view of a liquid crystal display panel of the present invention.
  • FIG. 8 is a schematic diagram of light leakage of a liquid crystal display panel of the present invention.
  • FIG. 9 is a schematic view of an open area of a liquid crystal display panel of the present invention.
  • FIG. 10 is a schematic view showing the distribution of a support body of a liquid crystal display panel of the present invention.
  • FIG. 11 is a cross-sectional structural view showing a second embodiment of a liquid crystal display panel of the present invention.
  • FIG. 12 is a schematic view showing a force application test of the liquid crystal display panel of the present invention.
  • Figure 13 is a schematic diagram of the test results of Figure 12. detailed description
  • the present invention provides a liquid crystal display panel, including: a TFT substrate
  • the CF substrate 4 disposed opposite to the TFT substrate 2 and the liquid crystal layer 6 disposed on the TFT substrate 2 and the CF substrate 4, the TFT substrate 2 including the first glass substrate 22 and a film disposed on the first glass substrate 22.
  • the transistor substrate 24 includes a second glass substrate 42 and a black matrix 422 disposed on the second glass substrate 42 .
  • the substrate 42 has a different thickness.
  • the invention can effectively reduce the amount of misalignment between the TFT substrate 2 and the CF substrate 4 when the liquid crystal display panel is deformed by force, and can effectively reduce the light leakage region, reduce the width W3 of the black matrix 422, and improve the opening area 423 of the liquid crystal display panel.
  • the width W4 and the aperture ratio increase the strength of the liquid crystal display panel, thereby effectively improving the shield of the liquid crystal display panel.
  • the thickness of the first glass substrate 22 is greater than the thickness of the second glass substrate 42.
  • the thickness of the first glass substrate 22 is 0.7 mm; and the thickness of the second glass substrate 42 is 0.5 mm.
  • the liquid crystal display panel of the present invention Compared with the liquid crystal display panel of the conventional first glass substrate 102 and the second glass substrate 302 having a thickness of 0.5 mm as shown in FIG. 1, first, the liquid crystal display panel of the present invention has a thickness of the first glass substrate 22 0.7 mm, which is larger than the existing 0.5 mm, the strength of the liquid crystal display panel of the present invention is increased. Secondly, since the liquid crystal display panel of the present invention is subjected to the same external force, the TFT substrate 2 and the CF substrate 4 are The amount of misalignment between the two is relatively small (refer to FIG. 12 and FIG.
  • the width W3 of the black matrix 48 on the side of the data line 226 can be appropriately reduced (as shown in FIG. 8). ), thereby increasing the aperture ratio of the liquid crystal display panel (as shown in FIG. 9), improving the display effect of the liquid crystal display panel; again, due to the strength of the liquid crystal display panel of the present invention If it is increased, the distribution density of the support can be appropriately reduced when designing the liquid crystal display panel (as shown in Figure 10).
  • the design width W3 of the black matrix 422 is 30 ⁇ m.
  • the width of the main support 424 is 0.0123%; the distribution of the auxiliary support 426 is 0.55%, which is 0.5 compared to the existing first and second glass substrates. In mm, the distribution rate of the main support is 0.0246%, and the distribution ratio of the auxiliary support is 0.688%, which can effectively reduce the production cost.
  • the cost of the liquid crystal display panel of the present invention is greatly reduced, and the cost reduction rate is in accordance with the size of the liquid crystal display panel. Increase and increase.
  • the TFT substrate 2 further includes a first polarizer 26 disposed on the side of the first glass substrate 22 away from the thin film transistor array 24.
  • the CF substrate 4 further includes a second polarizer 46 disposed on the side of the second glass substrate 42 away from the color filter 44.
  • the thickness of the second glass substrate 42' is greater than the thickness of the first glass substrate 22'.
  • the first glass substrate 22' has a thickness of 0.5 mm.
  • the second glass substrate 42' has a thickness of 0.7 mm.
  • a 55-inch liquid crystal display panel is taken as an example.
  • the width of the black matrix 422 can be reduced to increase the aperture ratio.
  • the width of the black matrix 422' is 1626.5 ⁇ m, which is 19.6% smaller than the existing width 33 ⁇ m; the main support 424' The distribution rate was 0.0123%; the distribution ratio of the auxiliary support 426' was 0.55%.
  • the distribution ratio of the main support is 0.0246%
  • the distribution ratio of the auxiliary support is 0.688%
  • the main support 424' and the auxiliary support 426 are compared. 'The distribution rate of 'significantly decreased, can effectively reduce the cost of production.
  • the liquid crystal display panel of the present invention can effectively reduce the amount of misalignment between the TFT substrate and the CF substrate when the liquid crystal display panel is subjected to force deformation by setting the glass substrate of the TFT substrate and the CF substrate to different thicknesses, and
  • the utility model can effectively reduce the light leakage area, reduce the width of the black matrix, increase the aperture ratio of the liquid crystal display panel, and increase the strength of the liquid crystal display panel, thereby effectively improving the quality of the liquid crystal display panel.

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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)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种液晶显示面板，包括：TFT基板（2）、与TFT基板（2）相对贴合设置的CF基板（4）及设于TFT基板（2）与CF基板（4）之间的液晶层（6），所述TFT基板（2）包括第一玻璃基板（22）及设于第一玻璃基板（22）上的薄膜晶体管阵列（24），所述CF基板（4）包括第二玻璃基板（42）及设于第二玻璃基板（42）上的黑色矩阵（422）、主支撑体（424）与辅支撑体（426），所述第一玻璃基板（22）与第二玻璃基板（42）具有不同厚度，可以有效减小液晶显示面板受力变形时TFT基板与CF基板之间的错位量，且能有效减小漏光区域，降低黑色矩阵的宽度，提高液晶显示面板的开口率，同时，增加液晶显示面板的强度，进而有效提高液晶显示面板的品质。

Description

液晶显示面板 技术领域
本发明涉及平面显示领域， 尤其涉及一种液晶显示面板。 背景技术
液晶显示装置 （Liquid Crystal Display, LCD )具有机身薄、 省电、 无 辐射等众多优点， 得到了广泛的应用， 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电脑屏幕等。
现有市场上的液晶显示装置大部分为背光型液晶显示装置， 其包括壳 体、 设于壳体内的液晶面板及设于壳体内的背光模组 （ Backlight module ) 。 传统的液晶面板的结构是由一彩色滤光片基板 （ Color Filter ) 、 一薄膜晶体管阵列基板 ( Thin Film Transistor Array Substrate , TFT Array Substrate ) 以及一配置于两基板间的液晶层 （ Liquid Crystal Layer )所构成， 其工作原理是通过在两片玻璃基板上施加驱动电压来控制 液晶层的液晶分子的旋转， 将背光模组的光线折射出来产生画面。 由于液 晶面板本身不发光， 需要借由背光模组提供的光源来正常显示影像， 因 此， 背光模组成为液晶显示装置的关键组件之一。 背光模组依照光源入射 位置的不同分成侧入式背光模组与直下式背光模组两种。 直下式背光模组 是将发光光源例如阴极萤光灯管 （ Cold Cathode Fluorescent Lamp， CCFL ) 或发光二极管 （Light Emitting Diode , LED )设置在液晶面板后 方， 直接形成面光源提供给液晶面板。 而侧入式背光模组是将背光源 LED 灯条（Light bar )设于液晶面板侧后方的背板边缘处， LED 灯条发出的光 线从导光板（Light Guide Plate, LGP )一侧的入光面进入导光板， 经反射 和扩散后从导光板出光面射出， 再经由光学膜片组， 以形成面光源提供给 液晶面板。
请参阅图 1， 现有的液晶显示面板一般包括： TFT (薄膜晶体管）基 板 100、 与 TFT基板 100相对贴合设置的 CF基板 300及设于 TFT基板 100与 CF基板 300之间的液晶层 500， 所述 TFT基板 100包括第一玻璃 基板 102、 形成于第一玻璃基板 102上的薄膜晶体管阵列 104， 所述 CF基 板 300包括第二玻璃基板 302及形成于第二玻璃基板 302上的彩色滤光片 304， 所述薄膜晶体管阵列 104驱动液晶层 500 中的液晶分子发生偏转， 以对透过液晶显示面板的光线进行选择， 所述彩色滤光片 304用于实现彩 色显示。
现有的液晶显示面板中， 第一玻璃基板与第二玻璃基板的厚度相等， 均为 0.5mm 或 0.7mm。 当第一玻璃基板与第二玻璃基板的厚度均为 0.5mm 时， 其成本较低， 但由于玻璃基板的厚度较小， 在大尺寸的液晶显 示面板中， 由于外力的作用使得液晶显示面板变形， 进而导致 TFT基板与 CF基板之间发生错位（请参阅图 2、 图 3、 图 4及图 5， 当在施力点 A施 加一定力时， 相距 8cm的测量点处 TFT基板与 CF基板之间的错位量约为 13μπι ) ， 当错位量超过黑色矩阵 306边缘（Black Matrix Margin ) 时， 就 会产生漏光， 对现实显示效果造成影响。 以 55 寸液晶面板为例， 其 TFT 基板与 CF基板均为 0.5mm， 数据线 106区域所需要遮光宽度为 16μπι， 然 而为了遮住可能的错位产生的漏光， 设计黑色矩阵 306在数据线 106侧的 宽度 W1需要设置为 33 urn ( 16+8.5+8.5=33 ) ， 每侧加宽 8.5μπι， 虽然这 样能减小漏光， 但这就影响了液晶显示面板的开口区 800的宽度 W2及开 口率。 同时， 由于第一玻璃基板与第二玻璃基板的厚度较薄， 需要设置的 支撑体（PS ) 700的分布较密 （主支撑体 701分布率为 0.0246%; 辅支撑 体 703 分布率为 0.688% ) (如图 6 所示） ， 不利于成本控制。 当第一玻 璃基板与第二玻璃基板的厚度均为 0.7mm时， 虽然减小了错位量（请参阅 图 2及图 3， 当在施力点 A施加一定力时， 相距 8cm的测量点处 TFT基 板与 CF基板之间的错位量约为 8μπι ) ， 但却增加了材料成本， 不利于成 本控制。 发明内容
本发明的目的在于提供一种液晶显示面板， 其能有效减小受力变形时 TFT基板与 CF基板之间的错位量， 减少漏光， 提高光学品味， 且利于成 本控制。
为实现上述目的， 本发明提供一种液晶显示面板， 包括： TFT基板、 与 TFT基板相对贴合设置的 CF基板及设于 TFT基板与 CF基板液晶层， 所述 TFT基板包括第一玻璃基板及设于第一玻璃基板上的薄膜晶体管阵 歹 |J， 所述 CF基板包括第二玻璃基板及设于第二玻璃基板上的黑色矩阵、 主支撑体与辅支撑体， 所述第一玻璃基板与第二玻璃基板具有不同厚度。
所述第一玻璃基板的厚度大于所述第二玻璃基板的厚度。
所述第一玻璃基板的厚度为 0.7mm ; 所述第二玻璃基板的厚度为 0.5mm。
所述液晶显示面板为 55 寸液晶显示面板， 所述黑色矩阵的宽度为 30μπι ; 所述主支撑体的分布率为 0.0123% ; 所述辅支撑体的分布率为 0.55%。
所述第二玻璃基板的厚度大于所述第一玻璃基板的厚度。
所述第一玻璃基板的厚度为 0.5mm ; 所述第二玻璃基板的厚度为 0.7mm。
所述液晶显示面板为 55 寸液晶显示面板， 所述黑色矩阵的宽度为 26.5μπι; 所述主支撑体的分布率为 0.0123%; 所述辅支撑体的分布率为 0.55%。
所述 TFT基板还包括设于第一玻璃基板远离薄膜晶体管阵列侧的第一 偏光片。
所述 CF 基板还包括设于第二玻璃基板远离黑色矩阵侧的第二偏光 片。
本发明还提供一种液晶显示面板， 包括： TFT基板、 与 TFT基板相对 贴合设置的 CF基板及设于 TFT基板与 CF基板液晶层， 所述 TFT基板包 括第一玻璃基板及设于第一玻璃基板上的薄膜晶体管阵列， 所述 CF基板 包括第二玻璃基板及设于第二玻璃基板上的黑色矩阵、 主支撑体与辅支撑 体， 所述第一玻璃基板与第二玻璃基板具有不同厚度；
其中， 所述第一玻璃基板的厚度大于所述第二玻璃基板的厚度。
所述第一玻璃基板的厚度为 0.7mm ; 所述第二玻璃基板的厚度为 0.5mm。
所述液晶显示面板为 55 寸液晶显示面板， 所述黑色矩阵的宽度为 30μπι ; 所述主支撑体的分布率为 0.0123% ; 所述辅支撑体的分布率为 0.55%。
所述 TFT基板还包括设于第一玻璃基板远离薄膜晶体管阵列侧的第一 偏光片。
所述 CF 基板还包括设于第二玻璃基板远离黑色矩阵侧的第二偏光 片。
本发明的有益效果： 本发明的液晶显示面板， 通过将 TFT基板与 CF 基板的玻璃基板设置为不同厚度， 可以有效减小液晶面板受力变形时 TFT 基板与 CF基板之间的错位量， 且能有效减小漏光区域， 降低黑色矩阵的 宽度， 提高液晶显示面板的开口率， 同时， 增加液晶显示面板的强度， 进 而有效提高液晶显示面板的品质。
为了能更进一步了解本发明的特征以及技术内容， 请参阅以下有关本 发明的详细说明与附图， 然而附图仅提供参考与说明用， 并非用来对本发 明加以限制。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其它有益效果显而易见。
附图中，
图 1为现有的液晶显示面板的剖面结构示意图；
图 2 为对现有的等厚度玻璃基板的液晶显示面板进行施力测试的示意 图；
图 3为图 2的测试结果示意图；
图 4为现有的等厚度玻璃基板的液晶显示面板的漏光示意图； 图 5为现有的等厚度玻璃基板的液晶显示面板的开口区的示意图； 图 6为现有的等厚度玻璃基板的液晶显示面板的支撑体分布示意图； 图 7为本发明液晶显示面板的剖面结构示意图；
图 8为本发明液晶显示面板的漏光示意图；
图 9为本发明液晶显示面板的开口区的示意图；
图 10为本发明液晶显示面板的支撑体的分布示意图；
图 11为本发明液晶显示面板的第二实施例的剖面结构示意图； 图 12为对本发明液晶显示面板进行施力测试的示意图；
图 13为图 12的测试结果示意图。 具体实施方式
为更进一步阐述本发明所釆取的技术手段及其效果， 以下结合本发明 的优选实施例及其附图进行详细描述。
请参阅图 7至图 10， 本发明提供一种液晶显示面板， 包括： TFT基板
2、 与 TFT基板 2相对贴合设置的 CF基板 4及设于 TFT基板 2与 CF基 板 4液晶层 6， 所述 TFT基板 2包括第一玻璃基板 22及设于第一玻璃基 板 22上的薄膜晶体管阵列 24， 所述 CF基板 4包括第二玻璃基板 42及设 于第二玻璃基板 42上的黑色矩阵 422、 主支撑体 424与辅支撑体 426， 所 述第一玻璃基板 22与第二玻璃基板 42具有不同厚度。 本发明可以有效减 小液晶显示面板受力变形时 TFT基板 2与 CF基板 4之间的错位量， 且能 有效减小漏光区域， 降低黑色矩阵 422 的宽度 W3， 提高液晶显示面板开 口区 423的宽度 W4及开口率， 同时， 增加液晶显示面板的强度， 进而有 效提高液晶显示面板的品盾。 具体地， 所述第一玻璃基板 22的厚度大于所述第二玻璃基板 42的厚 度。 在本实施例中， 所述第一玻璃基板 22 的厚度为 0.7mm; 所述第二玻 璃基板 42的厚度为 0.5mm。
与如图 1所示的现有的第一玻璃基板 102与第二玻璃基板 302的厚度 均为 0.5mm的液晶显示面板相比， 首先， 本发明的液晶显示面板由于第一 玻璃基板 22 的厚度为 0.7mm， 大于现有的 0.5mm， 所示使得本发明的液 晶显示面板的强度有所增加； 其次， 由于本发明的液晶显示面板在同样的 外力作用下， 其 TFT基板 2与 CF基板 4之间的错位量相对较小 （请参阅 图 12及图 13， 当施力点 A与测量点 B之间相距 8cm时， TFT基板 2与 CF基板 4之间的错位量约为 Ιΐμπι ) ， 使得本发明的液晶显示面板的漏光 区变小 （如图 7 所示） ， 所以， 在对液晶显示面板进行设计时， 可以适当 减小黑色矩阵 48在数据线 226侧的宽度 W3 (如图 8所示） ， 进而增大了 液晶显示面板的开口率 （如图 9 所示） ， 提升了液晶显示面板的显示效 果； 再次， 由于本发明的液晶显示面板的强度增大， 那么可以在对液晶显 示面板进行设计时， 适当的降低支撑体的分布密度（如图 10 所示） 。 以 55寸液晶显示面板为例， 当述第一玻璃基板 22的厚度为 0.7mm; 所述第 二玻璃基板 42的厚度为 0.5mm时， 所述黑色矩阵 422的设计宽度 W3为 30μπι , 比原有宽度 33μπι 减小 7.7% ; 所述主支撑体 424 的分布率为 0.0123%; 所述辅支撑体 426 的分布率为 0.55%， 相比现有的当第一与第 二玻璃基板均为 0.5mm时， 其主支撑体的分布率为 0.0246%， 辅支撑体的 分布率为 0.688%， 可以有效降低成产成本。
而与现有的第一玻璃基板与第二玻璃基板的厚度均为 0.7mm的液晶显 示面板相比， 本发明的液晶显示面板的成本大大降低， 且该成本降低率随 着液晶显示面板尺寸的增大而增大。
值得一提的是， 所述 TFT基板 2还包括设于第一玻璃基板 22远离薄 膜晶体管阵列 24侧的第一偏光片 26。 所述 CF基板 4还包括设于第二玻 璃基板 42远离彩色滤光片 44侧的第二偏光片 46。
请参阅图 11， 为本发明液晶显示面板的第二实施例的剖面示意图， 在 本实施例中， 所述第二玻璃基板 42'的厚度大于所述第一玻璃基板 22'的厚 度。 优选的， 所述第一玻璃基板 22'的厚度为 0.5mm。 所述第二玻璃基板 42'的厚度为 0.7mm。
请参阅图 12及 13， 以 55 寸液晶显示面板为例， 当述第一玻璃基板 22'的厚度为 0.5mm; 所述第二玻璃基板 42'的厚度为 0.7mm时， 当施力点 A与测量点 B之间相距 8cm时， 错位量约为 7.2μπι， 具有更小的错位量， 这就可以减小黑色矩阵 422，的宽度， 以增大开口率， 在本实施例中， 黑色 矩阵 422'的宽度为 1626.5μπι， 比现有宽度 33μπι减小 19.6%; 主支撑体 424'的分布率为 0.0123%; 辅支撑体 426'的分布率为 0.55%。 相比现有的 当第一与第二玻璃基板均为 0.5mm时， 其主支撑体的分布率为 0.0246%， 辅支撑体的分布率为 0.688%， 主支撑体 424'与辅支撑体 426'的分布率显 著下降， 可以有效降低成产成本。
综上所述， 本发明的液晶显示面板， 通过将 TFT基板与 CF基板的玻 璃基板设置为不同厚度， 可以有效减小液晶显示面板受力变形时 TFT基板 与 CF 基板之间的错位量， 且能有效减小漏光区域， 降低黑色矩阵的宽 度， 提高液晶显示面板的开口率， 同时， 增加液晶显示面板的强度， 进而 有效提高液晶显示面板的品质。
以上所述， 对于本领域的普通技术人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明权利要求的保护范围。

Claims

权 利 要 求
1、 一种液晶显示面板， 包括： TFT基板、 与 TFT基板相对贴合设置 的 CF基板及设于 TFT基板与 CF基板液晶层， 所述 TFT基板包括第一玻 璃基板及设于第一玻璃基板上的薄膜晶体管阵列， 所述 CF基板包括第二 玻璃基板及设于第二玻璃基板上的黑色矩阵、 主支撑体与辅支撑体， 所述 第一玻璃基板与第二玻璃基板具有不同厚度。
2、 如权利要求 1 所述的液晶显示面板， 其中， 所述第一玻璃基板的 厚度大于所述第二玻璃基板的厚度。
3、 如权利要求 2 所述的液晶显示面板， 其中， 所述第一玻璃基板的 厚度为 0.7mm; 所述第二玻璃基板的厚度为 0.5mm。
4、 如权利要求 3 所述的液晶显示面板， 其中， 所述液晶显示面板为
55 寸液晶显示面板， 所述黑色矩阵的宽度为 30μπι; 所述主支撑体的分布 率为 0.0123%; 所述辅支撑体的分布率为 0.55%。
5、 如权利要求 1 所述的液晶显示面板， 其中， 所述第二玻璃基板的 厚度大于所述第一玻璃基板的厚度。
6、 如权利要求 5 所述的液晶显示面板， 其中， 所述第一玻璃基板的 厚度为 0.5mm; 所述第二玻璃基板的厚度为 0.7mm。
7、 如权利要求 6 所述的液晶显示面板， 其中， 所述液晶显示面板为 55 寸液晶显示面板， 所述黑色矩阵的宽度为 26.5μπι; 所述主支撑体的分 布率为 0.0123%; 所述辅支撑体的分布率为 0.55%。
8、 如权利要求 1 所述的液晶显示面板， 其中， 所述 TFT基板还包括 设于第一玻璃基板远离薄膜晶体管阵列侧的第一偏光片。
9、 如权利要求 1所述的液晶显示面板， 其中， 所述 CF基板还包括设 于第二玻璃基板远离黑色矩阵侧的第二偏光片。
10、 一种液晶显示面板， 包括： TFT基板、 与 TFT基板相对贴合设置 的 CF基板及设于 TFT基板与 CF基板液晶层， 所述 TFT基板包括第一玻 璃基板及设于第一玻璃基板上的薄膜晶体管阵列， 所述 CF基板包括第二 玻璃基板及设于第二玻璃基板上的黑色矩阵、 主支撑体与辅支撑体， 所述 第一玻璃基板与第二玻璃基板具有不同厚度；
其中， 所述第一玻璃基板的厚度大于所述第二玻璃基板的厚度。
11、 如权利要求 10 所述的液晶显示面板， 其中， 所述第一玻璃基板 的厚度为 0.7mm; 所述第二玻璃基板的厚度为 0.5mm。
12、 如权利要求 11 所述的液晶显示面板， 其中， 所述液晶显示面板 为 55寸液晶显示面板， 所述黑色矩阵的宽度为 30μπι; 所述主支撑体的分 布率为 0.0123%; 所述辅支撑体的分布率为 0.55%。
13、 如权利要求 10所述的液晶显示面板， 其中， 所述 TFT基板还包 括设于第一玻璃基板远离薄膜晶体管阵列侧的第一偏光片。
14、 如权利要求 10所述的液晶显示面板， 其中， 所述 CF基板还包括 设于第二玻璃基板远离黑色矩阵侧的第二偏光片。
PCT/CN2014/074760 2014-03-24 2014-04-03 液晶显示面板 WO2015143735A1 (zh)

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