WO2017101180A1 - 曲面液晶显示面板及其阵列基板 - Google Patents

曲面液晶显示面板及其阵列基板 Download PDF

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Publication number
WO2017101180A1
WO2017101180A1 PCT/CN2016/070305 CN2016070305W WO2017101180A1 WO 2017101180 A1 WO2017101180 A1 WO 2017101180A1 CN 2016070305 W CN2016070305 W CN 2016070305W WO 2017101180 A1 WO2017101180 A1 WO 2017101180A1
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region
width
sub
pixel unit
array substrate
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French (fr)
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叶成亮
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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 US14/906,727 priority Critical patent/US20170322438A1/en
Publication of WO2017101180A1 publication Critical patent/WO2017101180A1/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
    • 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
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133757—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different alignment orientations
    • 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
    • G02F1/136222—Colour filters incorporated in the active matrix substrate

Definitions

  • the present invention relates to a curved liquid crystal display panel and an array substrate thereof, and more particularly to a curved liquid crystal display panel having an asymmetric design of a sub-region of a pixel unit and an array substrate thereof.
  • the liquid crystal display panel has a liquid crystal layer sandwiched between two glass substrates, and the upper glass is a color filter (Color) The filter, CF) substrate, and the lower layer of glass is an array (Array) substrate in which a thin film transistor (TFT) is embedded.
  • TFT thin film transistor
  • the array substrate adopts COA (Color Filter on The Array technology is to move the color resistance of the three colors of red, green and blue (RGB) on the side of the color filter substrate to the array substrate, while the opposite substrate only retains the black matrix (BM, Black).
  • Matrix Elements such as film layers and transparent conductive film (ITO) electrodes.
  • a further step is to move the black matrix film layer onto the array substrate, called BOA (Black Matrix on Array) technology.
  • FIG. 1 discloses a side cross-sectional view of a conventional curved liquid crystal display panel.
  • a panel 90 of a conventional curved LCD mainly includes an array substrate 91 and a pair of substrates 92, and the panel 90 has light leakage or the like.
  • the main reason is that after the panel 90 is bent, the array substrate Due to the difference in the radius of curvature of the opposite substrate 92, the relative position of the array substrate 91 and the opposite substrate 92 occurs in the long direction along the panel 90, that is, in the direction of bending. Caused by the offset. As shown in FIG.
  • a position of the opposite substrate 92 relative to the array substrate 91 is shifted to the left by a distance d1 from the front of the curved surface; at the right side of the panel 90 On the side, a position of the opposite substrate 92 relative to the array substrate 91 is offset from the front to the right by a distance d2.
  • the panel 90 is a COA technology
  • the pixels on the array substrate 91 and the BM film layer on the opposite substrate 92 may be displaced, thereby causing problems such as light leakage and crosstalk.
  • the panel 90 is BOA technology, since the black matrix film layer is also formed on the array substrate, there is no problem such as light leakage or crosstalk caused by relative positional deviation.
  • Ultraviolet is irradiated to fix the pretilt angle.
  • the angle of alignment is related to the direction in which the liquid crystal is tilted, the liquid crystal molecules may be tumbling when the panel is bent due to the angle of the phase of the upper and lower substrates.
  • UVVA UV2A, Ultraviolet Induced
  • Multi-domain Vertical Alignment The optical alignment technology, that is, the PIs of the upper and lower substrates are first phase-matched separately, and then the liquid crystal cell is assembled and the liquid crystal is dripped.
  • FIG 2A-2C discloses a schematic diagram of an existing UVVA optical alignment technology applied to a curved LCD panel. Specifically, a pixel unit is taken as an example, and a pixel electrode on an array substrate 91 is used to represent the whole. The array substrate 91 is illustrated by a color resisting unit on a counter substrate 92 to represent the entire counter substrate 92.
  • the UVVA optical alignment technique is to respectively align the array substrate 91 in the vertical direction and to align the opposite substrate 92 in the horizontal direction, and then assemble the two substrates into a liquid crystal cell, and drip the liquid crystal inside thereof to obtain a curved LCD.
  • Panel 90 if UVVA technology is used in theory, the pixel design of the curved panel can be completed by the general panel design, and the transmittance of the liquid crystal will also be high.
  • liquid crystal molecules are generated with four domains under the combined force of the upper and lower substrates PI. The effect of domain), so using UVVA does not require setting the ITO slit (Slit), so there is no risk of liquid crystal collapse between sub-regions of adjacent pixels.
  • the optical alignment technique can avoid the problem of liquid crystal collapse, there are some pixels on the left and right sides of the liquid crystal panel using the COA technology, that is, where the relative position of the panel is shifted after bending.
  • the size of the subdomains will be inconsistent. Due to the offset of the upper and lower substrates, in the sub-region of the leftmost pixel unit of the panel, the right sub-region is smaller than the left sub-region (as shown in FIG. 2B); and the pixel unit at the far right of the panel In the area, the left sub-area is smaller than the right sub-area (as shown in FIG. 2C), thereby affecting the viewing angle and color shift of the LCD panel.
  • the main object of the present invention is to provide a curved liquid crystal display panel and an array substrate thereof.
  • the array substrate is arranged with a plurality of pixel units, each pixel unit having a left sub-region and a right sub-region, and the array substrate is divided into a central section, a left section, and a right section; a width of a right sub-region of the pixel unit of the left section is greater than a width of a left sub-region thereof; and a pixel unit of the right section
  • the width of the left sub-region is greater than the width of its right sub-region to compensate for the positional deviation of the curved panel during molding.
  • the present invention provides a curved liquid crystal display panel comprising:
  • An array substrate is arranged with a plurality of pixel units, each pixel unit having a left sub-region and a right sub-region;
  • liquid crystal layer disposed between the array substrate and the opposite substrate
  • the array substrate is divided into a central section, a left section, and a right section; wherein a width of a right sub-region of the pixel unit of the central section is equal to a width of a left sub-region thereof;
  • the width of the right sub-region of the pixel unit of the segment is greater than the width of the left sub-region thereof, and the difference between the width of the right sub-region of the leftmost pixel unit of the left segment is greater than the width of the width of the left sub-region thereof is a first compensation value; and a width of a left sub-region of the pixel unit of the right segment is greater than a width of a right sub-region thereof, and a width of a left sub-region of a rightmost pixel unit of the right segment A difference greater than the width of the right sub-region is a second compensation value; the first compensation value is equal to the second compensation value.
  • the first compensation value is a deviation value of a cell of a leftmost side of the left side segment and a cell of a corresponding opposite substrate when the panel is bent; and the second The compensation value is a deviation value of the cell of the rightmost side of the right side segment and the cell of the corresponding opposite substrate when the panel is bent.
  • the difference between the width of the right sub-region of the pixel unit and the width of the left sub-region is decreasing from the first compensation value to the right.
  • the difference between the width of the left sub-region of the pixel unit and the width of the right sub-region is decreasing from the second compensation value to the left.
  • the present invention further provides a curved liquid crystal display panel, comprising: an array substrate, a plurality of pixel units arranged in a row, each pixel unit having a left sub-region and a right sub-region; a pair of substrates a plurality of cells are arranged corresponding to the pixel unit; and a liquid crystal layer is disposed between the array substrate and the opposite substrate; the array substrate is divided into a central segment, a left segment, and a right a side segment; wherein a width of a right sub-region of a pixel unit of the central segment is equal to a width of a left sub-region thereof; a width of a right sub-region of a pixel unit of the left segment is greater than a width of a left sub-region thereof Width; and the width of the left sub-region of the pixel unit of the right segment is greater than the width of its right sub-region.
  • a difference between a width of a right sub-region of a leftmost pixel unit of the left side segment and a width of a left sub-region thereof is a first compensation value;
  • the difference between the width of the left sub-region of the rightmost pixel unit of the right side segment and the width of the right sub-region is a second compensation value;
  • the first compensation value is the leftmost side of the left side segment.
  • the second compensation value is the cell of the rightmost segment of the right segment and the cell of the corresponding opposite substrate The deviation value when the panel is bent.
  • the first compensation value is equal to the second compensation value.
  • the difference between the width of the right sub-region of the pixel unit and the width of the left sub-region is decreasing from the first compensation value to the right.
  • the difference between the width of the left sub-region of the pixel unit and the width of the right sub-region is decreasing from the second compensation value to the left.
  • the difference decrement is decremented according to a linear relationship or decreased according to a functional relationship.
  • the present invention further provides an array substrate of a curved liquid crystal display panel, which is arranged with a plurality of pixel units, each pixel unit having a left sub-region and a right sub-region, wherein the pixel unit corresponds to one a plurality of cells facing the substrate; the array substrate is divided into a central segment, a left segment, and a right segment; a width of a right sub-region of the pixel unit of the central segment is equal to a width of a left sub-region thereof Width; the width of the right sub-region of the pixel unit of the left segment is greater than the width of its left sub-region; the width of the left sub-region of the pixel unit of the right segment is greater than the width of its right sub-region.
  • a difference between a width of a right sub-region of a leftmost pixel unit of the left side segment and a width of a left sub-region thereof is a first compensation value;
  • the difference between the width of the left sub-region of the rightmost pixel unit of the right side segment and the width of the right sub-region is a second compensation value;
  • the first compensation value is the leftmost side of the left side segment.
  • the second compensation value is the cell of the rightmost segment of the right segment and the cell of the corresponding opposite substrate The deviation value when the panel is bent.
  • the first compensation value is equal to the second compensation value.
  • the difference between the width of the right sub-region of the pixel unit and the width of the left sub-region is decreasing from the first compensation value to the right.
  • the difference between the width of the left sub-region of the pixel unit and the width of the right sub-region is decreasing from the second compensation value to the left.
  • the difference decrement is decremented according to a linear relationship or decreased according to a functional relationship.
  • the invention makes an asymmetric design of the sub-regions of the pixel unit to compensate for the positional deviation during the forming of the curved panel, thereby improving the viewing angle and color shift of the curved panel.
  • Figure 1 Schematic cross-sectional view of a conventional curved liquid crystal display panel.
  • 2A-2C are schematic views of a conventional UVVA optical alignment technique applied to a curved liquid crystal display panel.
  • FIG 3 is a side cross-sectional view showing a curved liquid crystal display panel in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a front elevational view of an array substrate in accordance with a preferred embodiment of the present invention.
  • FIG. 3 is a side cross-sectional view of a curved liquid crystal display panel according to a preferred embodiment of the present invention.
  • a curved liquid crystal display panel 100 of the present invention comprises: an array substrate 10, a pair of substrates 20 and a liquid crystal layer 30.
  • the array substrate 10 is arranged with a plurality of pixel units 11 (11a, 11b, 11c), the pixel unit is defined by a color photoresist layer and a plurality of pixel electrodes on the inner surface thereof, and the opposite substrate 20 is provided with a plurality of cells 21 corresponding to the pixel unit 11 .
  • the cell is for example defined by a black matrix layer on its inner surface.
  • the curved liquid crystal display panel 100 adopts COA (Color)
  • the filter on Array technology is to shift the color resistance of the red, green and blue colors on the side of the color filter substrate to the array substrate 10, while the opposite substrate 20 only retains components such as a black matrix film layer and a transparent conductive film electrode.
  • the pixel unit referred to in the present invention is actually a sub-pixel (Sub Pixel), generally a sub-pixel of three colors by red, blue, green (RGB) (Sub) Pixel) constitutes a pixel on the display.
  • the UVVA optical alignment technique is to respectively align the array substrate in the vertical direction and to align the opposite substrate in the horizontal direction, and then assemble the two substrates into a liquid crystal cell, and The internal drip irrigation liquid crystal, in which each pixel thus forms a total of four sub-regions of up and down, left and right 2x2 (4 Domains).
  • the light alignment technique can avoid the problem of liquid crystal collapse, in the left and right sides of the liquid crystal panel, that is, where the relative position of the panel is shifted after bending, there are four sub-regions of some pixels (4) The size of domains) will be inconsistent.
  • the two sub-regions on the right side are smaller than the two sub-regions on the left side; and in the pixel unit on the far right side of the panel, the two sub-pixels on the left side
  • the area is smaller than the two sub-areas on the right side, thereby affecting the viewing angle and color shift of the LCD panel.
  • the present invention collectively refers to the right two sub-regions of the four sub-regions in each pixel as the "right sub-region", and the left two sub-regions of the four sub-regions in each pixel are collectively referred to as the "left sub-region". "This is a combination of the first.
  • FIG. 4 is a front projection view of an array substrate according to a preferred embodiment of the present invention
  • 5A-5C is a partial enlarged view of Fig. 4.
  • the present invention divides the array substrate 10 into a central segment 10a, a left segment 10b, and The right side section 10c, wherein the width of the right sub-region R1 of the pixel unit 11a of the central section 10 is equal to the width of its left sub-region L1 (FIG.
  • the pixel unit 11b of the left section 10b The width of the right sub-region R2 is greater than the width of its left sub-region L2 (FIG. 5B); the width of the left sub-region L3 of the pixel unit 11c of the right segment 10c is greater than the width of its right sub-region R3 (FIG. 5C) ).
  • the sub-area of 11c is asymmetrically designed to compensate for the positional deviation of the array substrate 10 and the opposite substrate 20 when the curved liquid crystal display panel 100 is bent, thereby improving the viewing angle and color of the curved liquid crystal display panel 100. Partial.
  • the difference between the width of the right sub-region R2 of the leftmost pixel unit 11b of the left side segment 10b and the width of the left sub-region L2 is at least a first compensation value D1;
  • the difference between the width of the left sub-region L3 of the rightmost pixel unit 11c of the right side segment 10c and the width of the right sub-region R3 is at least a second compensation value D2.
  • the first compensation value D1 is a deviation value of the leftmost pixel unit 11b of the left side section 10b and the cell 21 of the corresponding opposite substrate 20 when the panel is bent;
  • the second compensation value D2 is a deviation value of the rightmost pixel unit 11c of the right side section 10c and the cell 21 of the corresponding opposite substrate 20 when the panel is bent; and, assuming that the array substrate 10 is a completely symmetrical curved surface,
  • the first compensation value D1 is equal to the second compensation value D2.
  • the designer can obtain the first compensation value D1 and the second compensation value D2 according to an empirical value, a formula calculation or an experiment.
  • the difference between the width of the right sub-region R2 of the pixel unit 11b and the width of the left sub-region L2 is from the first compensation value D1 Right decreasing; and on the right side segment 10c of the array substrate 10, the difference between the width of the left sub-region L3 of the pixel unit 11c and the width of the right sub-region R3 is from the second compensation value D2 to the left Decrement.
  • the manner in which the above difference is decremented may be decremented according to a linear relationship or decreased according to a functional relationship.
  • the width of the right sub-region R2 of the pixel unit 11b of the left side segment 10b of the array substrate 10 is greater than the width of the left sub-region L2 thereof; the pixel unit of the right segment 10c of the array substrate 10
  • the width of the left sub-region L3 of 11c is greater than the width of the right sub-region R3.

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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)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种曲面液晶显示面板（100）及其阵列基板（10），所述阵列基板（10）排列设有多个像素单元（11），每一像素单元（11）具有一左子区域（L1，L2，L3）及一右子区域（R1，R2，R3），所述阵列基板（10）分为中央区段（10a）、左侧区段（10b）及右侧区段（10c）；在所述左侧区段（10b）的像素单元（11b）的右子区域（R2）的宽度大于其左子区域（L2）的宽度；在所述右侧区段（10c）的像素单元（11c）的左子区域（L3）的宽度大于其右子区域（R3）的宽度。通过对像素单元（11）的子区域做不对称的设计，以补偿曲面面板成型时的位置偏差，从而改善曲面面板的视角以及色偏。

Description

曲面液晶显示面板及其阵列基板 技术领域
本发明涉及一种曲面液晶显示面板及其阵列基板，特别是涉及一种像素单元的子区域具有不对称设计的曲面液晶显示面板及其阵列基板。
 背景技术
液晶显示面板(LCD panel) 为两片玻璃基板中间夹着一液晶层，上层的玻璃是一彩色滤光片(Color Filter，CF)基板，下层的玻璃则是镶嵌有薄膜晶体管(TFT)的阵列(Array)基板。为了提高液晶显示面板(LCD panel)的开口率，降低生产成本，目前阵列基板采用COA（Color Filter on Array）技术，即是将彩色滤光片基板侧的红绿蓝(RGB)三色的色阻移至阵列基板上制作，而对向基板仅保留黑色矩阵(BM, Black Matrix)膜层及透明导电膜(ITO)电极等元件。更近一步的，是将黑色矩阵膜层也挪到阵列基板上制作，称之为BOA(Black Matrix on Array)技术。
请参照图1所示，图1揭示一种现有的曲面液晶显示面板的侧剖面示意图。一种现有的曲面LCD的面板90主要包含一阵列基板91与一对向基板92，而所述面板90之所以有漏光等现象，主要原因是在所述面板90弯曲后，所述阵列基板91与所述对向基板92由于曲率半径的差异，导致所述阵列基板91与所述对向基板92的相对位置在沿着所述面板90的长方向上，也就是弯曲的方向上，发生偏移所导致。如图1所示，在所述面板90的靠左侧，所述对向基板92的一个相对所述阵列基板91的位置较弯曲前向左偏移距离d1；在所述面板90的靠右侧，所述对向基板92的一个相对所述阵列基板91的位置较弯曲前向右偏移距离d2。
因此，所述面板90如果是采用COA技术，则所述阵列基板91上的像素与所述对向基板92上的BM膜层会发生偏移，于是造成漏光、串扰等问题。另外，所述面板90如果是采用BOA技术，则因为将黑色矩阵膜层也做到所述阵列基板上，因此就不会有相对位置偏移造成的漏光、串扰等不良问题。
但不论是采用COA技术或采用BOA技术还有一个问题不能解决，那就是所述面板90的光配向作业若使用的是垂直排列液晶(HVA)的光配向技术，则子像素的各个区域(domain)在下基板(阵列基板)和上基板(对向基板)之间的液晶因为预倾角不同而发生液晶乱倒。这是由于在HVA技术中，上下基板是通过聚酰亚胺(PI)配向膜给液晶分子配相，并在组装液晶盒(cell)之后，通过加电让液晶分子倾倒，然后以紫外线(UV, Ultraviolet)照射，使其预倾角固定，但由于配向的角度与液晶的加电倾倒方向有关，因此会出现上下基板由于配相角度的关系，在面板弯曲时使液晶分子产生乱倒的现象。
上述液晶乱倒问题的解决方法之一是采用UVVA(UV2A, Ultraviolet Induced Multi-domain Vertical Alignment )光配向技术，也就是采用的上下基板的PI先分别配相，然后才组装液晶盒，并滴灌液晶。请参照图 2A-2C所示，其揭示现有的UVVA光配向技术应用于曲面LCD面板的示意图，特别说明的是，图中是以一个像素单元为例，用一个阵列基板91上的像素电极来代表整个阵列基板91，用一个对向基板92上的色阻单元来代表整个对向基板92来进行解说。UVVA光配向技术是分别将阵列基板91在垂直方向上配向，以及将对向基板92在水平方向上配向，然后将两个基板组装为液晶盒，并在其内部滴灌液晶，即制得曲面LCD的面板90。所以理论上如果采用UVVA技术的话，可以用一般的面板的设计就能完成曲面面板的像素(pixel)设计，并且液晶的穿透率也会较高。如图2A所示，液晶分子会在上下基板PI的配向合力作用下，产生具有四畴(4 domain)的效果，所以采用UVVA不需要设置ITO 狭缝(Slit)，也就不存在相邻像素的子区域之间液晶乱倒的风险。
然而，如上所述，这种光配向技术虽然可避免产生液晶乱倒的问题，但是在采用COA技术的液晶面板的左右两侧，也就是面板弯曲后相对位置发生偏移的地方，有一些像素的子区域(domain)的大小会有不一致的情形。由于上下基板偏移的缘故，在面板最左侧的像素单元的子区域中，右边的子区域比左边的子区域小(如图2B所示)；而在面板最右侧的像素单元的子区域中，左边的子区域比右边的子区域小(如图2C所示)，从而影响LCD面板的视角以及色偏。
因此，有必要提供一种曲面液晶显示面板及阵列基板，以解决现有采用COA技术的液晶面板所存在的问题。
 技术问题
本发明的主要目的是提供一种曲面液晶显示面板及其阵列基板，所述阵列基板排列设有多个像素单元，每一像素单元具有一左子区域及一右子区域，所述阵列基板分为中央区段、左侧区段及右侧区段；在所述左侧区段的像素单元的右子区域的宽度大于其左子区域的宽度；在所述右侧区段的像素单元的左子区域的宽度大于其右子区域的宽度，以补偿曲面面板成型时的位置偏差。
 技术解决方案
为达上述目的，本发明提供一种曲面液晶显示面板，其包含：
一阵列基板，排列设有多个像素单元，每一像素单元具有一左子区域及一右子区域；
一对向基板，对应所述像素单元排列设有多个单元格；及
一液晶层，设于所述阵列基板及所述对向基板之间；
所述阵列基板分为中央区段、左侧区段及右侧区段；其中在所述中央区段的像素单元的右子区域的宽度等于其左子区域的宽度；在所述左侧区段的像素单元的右子区域的宽度大于其左子区域的宽度，在所述左侧区段的最左侧的像素单元的右子区域的宽度大于其左子区域的宽度的一差值为一第一补偿值；及在所述右侧区段的像素单元的左子区域的宽度大于其右子区域的宽度，在所述右侧区段最右侧的像素单元的左子区域的宽度大于其右子区域的宽度的一差值为一第二补偿值；所述第一补偿值等于所述第二补偿值。
在本发明的一实施例中，所述第一补偿值为所述左侧区段最左侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值；及所述第二补偿值为所述右侧区段最右侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值。
在本发明的一实施例中，在所述阵列基板的左侧区段上，所述像素单元的右子区域的宽度大于其左子区域的宽度的差值是从第一补偿值向右递减；以及在所述阵列基板的右侧区段上，所述像素单元的左子区域的宽度大于其右子区域的宽度的差值是从第二补偿值向左递减。
为达上述目的，本发明还提供一种曲面液晶显示面板，其包含：一阵列基板，排列设有多个像素单元，每一像素单元具有一左子区域及一右子区域；一对向基板，对应所述像素单元排列设有多个单元格；及一液晶层，设于所述阵列基板及所述对向基板之间；所述阵列基板分为中央区段、左侧区段及右侧区段；其中在所述中央区段的像素单元的右子区域的宽度等于其左子区域的宽度；在所述左侧区段的像素单元的右子区域的宽度大于其左子区域的宽度；及在所述右侧区段的像素单元的左子区域的宽度大于其右子区域的宽度。
在本发明的一实施例中，在所述左侧区段的最左侧的像素单元的右子区域的宽度大于其左子区域的宽度的一差值为一第一补偿值；在所述右侧区段最右侧的像素单元的左子区域的宽度大于其右子区域的宽度的一差值为一第二补偿值；所述第一补偿值为所述左侧区段最左侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值；及所述第二补偿值为所述右侧区段最右侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值。
在本发明的一实施例中，所述第一补偿值等于所述第二补偿值。
在本发明的一实施例中，在所述阵列基板的左侧区段上，所述像素单元的右子区域的宽度大于其左子区域的宽度的差值是从第一补偿值向右递减；以及在所述阵列基板的右侧区段上，所述像素单元的左子区域的宽度大于其右子区域的宽度的差值是从第二补偿值向左递减。
在本发明的一实施例中，所述差值递减是依一线性关系递减或依一函数关系递减。
为达上述目的，本发明另提供一种曲面液晶显示面板的阵列基板，其排列设有多个像素单元，每一像素单元具有一左子区域及一右子区域，所述像素单元对应于一对向基板的多个单元格；所述阵列基板分为中央区段、左侧区段及右侧区段；在所述中央区段的像素单元的右子区域的宽度等于其左子区域的宽度；在所述左侧区段的像素单元的右子区域的宽度大于其左子区域的宽度；在所述右侧区段的像素单元的左子区域的宽度大于其右子区域的宽度。
在本发明的一实施例中，在所述左侧区段的最左侧的像素单元的右子区域的宽度大于其左子区域的宽度的一差值为一第一补偿值；在所述右侧区段最右侧的像素单元的左子区域的宽度大于其右子区域的宽度的一差值为一第二补偿值；所述第一补偿值为所述左侧区段最左侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值；及所述第二补偿值为所述右侧区段最右侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值。
在本发明的一实施例中，所述第一补偿值等于所述第二补偿值。
在本发明的一实施例中，在所述阵列基板的左侧区段上，所述像素单元的右子区域的宽度大于其左子区域的宽度的差值是从第一补偿值向右递减；以及在所述阵列基板的右侧区段上，所述像素单元的左子区域的宽度大于其右子区域的宽度的差值是从第二补偿值向左递减。
在本发明的一实施例中，所述差值递减是依一线性关系递减或依一函数关系递减。
 有益效果
本发明通过对像素单元的子区域做不对称的设计，以补偿曲面面板成型时的位置偏差，从而改善曲面面板的视角以及色偏。
附图说明
图1：一种现有的曲面液晶显示面板的侧剖面示意图。
图 2A-2C：现有的UVVA光配向技术应用于曲面液晶显示面板的示意图。
图3：本发明较佳实施例的一种曲面液晶显示面板的侧剖面示意图。
图4：本发明较佳实施例的阵列基板的正投影示意图。
图 5A-5C：图4的局部放大图。
 本发明的最佳实施方式
为让本发明上述目的、特征及优点更明显易懂，下文特举本发明较佳实施例，并配合附图，作详细说明。为让本发明上述目的、特征及优点更明显易懂，下文特举本发明较佳实施例，并配合附图，作详细说明如下。再者，本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参照附加图式的方向。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。
请参照图3所示，图3是本发明较佳实施例的一种曲面液晶显示面板的侧剖面示意图。本发明的一种曲面液晶显示面板100，其包含：一阵列基板10、一对向基板20及一液晶层30。所述阵列基板10排列设有多个像素单元11(11a, 11b, 11c)，所述像素单元例如是由其内表面上的一彩色光阻层及多个像素电极所定义的；所述对向基板20对应所述像素单元11排列设有多个单元格21，所述单元格例如是由其内表面上的一黑色矩阵层所定义的。所述曲面液晶显示面板100采用COA（Color Filter on Array）技术，即是将彩色滤光片基板侧的红绿蓝三色的色阻移至阵列基板10上制作，而对向基板20仅保留黑色矩阵膜层及透明导电膜电极等元件 。另外，本发明中所称像素单元实际上为子像素(Sub Pixel)，一般是通过红蓝绿(RGB)三种颜色的子像素(Sub Pixel)组成一个显示上的像素。
如在本说明书背景技术中所叙述的，采用UVVA光配向技术是分别将阵列基板在垂直方向上配向，以及将对向基板在水平方向上配向，然后将两个基板组装为液晶盒，并在其内部滴灌液晶，其中每个像素皆因此形成上下、左右2x2共四个子区域(4 domains)。然而，这种光配向技术虽然可避免产生液晶乱倒的问题，但是在液晶面板的左右两侧，也就是面板弯曲后相对位置发生偏移的地方，有一些像素的四个子区域(4 domains)的大小会有不一致的情形。由于上下基板偏移的缘故，在面板最左侧的每一像素单元中，其右侧2个子区域比左侧2个子区域小；而在面板最右侧的像素单元中，其左侧2个子区域比右侧2个子区域小，从而影响LCD面板的视角以及色偏。在下文中，本发明将每一像素中四个子区域中的右侧2个子区域统称为「右子区域」，并将每一像素中四个子区域中的左侧2个子区域统称为「左子区域」，于此合先叙明。
请参照图4及图5A-5C 所示，图4是本发明较佳实施例的阵列基板的正投影示意图；图 5A-5C是图4的局部放大图。为了补偿上述曲面液晶显示面板100弯曲成型时造成的所述阵列基板10与所述对向基板20的偏差现象，本发明将所述阵列基板10分为中央区段10a、左侧区段10b及右侧区段10c，其中在所述中央区段10的像素单元11a的右子区域R1的宽度等于其左子区域L1的宽度(图5A)；在所述左侧区段10b的像素单元11b的右子区域R2的宽度大于其左子区域L2的宽度(图5B)；在所述右侧区段10c的像素单元11c的左子区域L3的宽度大于其右子区域R3的宽度(图5C)。通过将所述阵列基板10的左侧及右侧区段10b, 10c的像素单元11b, 11c的子区域做不对称的设计，可以补偿在所述曲面液晶显示面板100弯曲成型时所述阵列基板10与对向基板20的位置偏差，从而改善所述曲面液晶显示面板100的视角以及色偏。
如图5B所示，在所述左侧区段10b最左侧的像素单元11b的右子区域R2的宽度大于其左子区域L2的宽度的一差值至少为一第一补偿值D1；如图5C所示，在所述右侧区段10c最右侧的像素单元11c的左子区域L3的宽度大于其右子区域R3的宽度的一差值至少为一第二补偿值D2。
优选的，所述第一补偿值D1为所述左侧区段10b最左侧的像素单元11b与对应的对向基板20的单元格21在面板弯曲时的偏差值；所述第二补偿值D2为所述右侧区段10c最右侧的像素单元11c与对应的对向基板20的单元格21在面板弯曲时的偏差值；并且，假设所述阵列基板10为完全对称的曲面，则所述第一补偿值D1等于所述第二补偿值D2。
在本发明中，设计者可依经验值，公式计算或实验等方式获得所述第一补偿值D1与所述第二补偿值D2。并且，优选的，在所述阵列基板10的左侧区段10b上，所述像素单元11b的右子区域R2的宽度大于其左子区域L2的宽度的差值是从第一补偿值D1向右递减；以及在所述阵列基板10的右侧区段10c上，所述像素单元11c的左子区域L3的宽度大于其右子区域R3的宽度的差值是从第二补偿值D2向左递减。上述差值递减的方式可以是依照一线性关系递减或依一函数关系递减。
在本发明中，所述阵列基板10的左侧区段10b的像素单元11b的右子区域R2的宽度大于其左子区域L2的宽度；所述阵列基板10的右侧区段10c的像素单元11c的左子区域L3的宽度大于其右子区域R3的宽度，通过对像素单元11b,11c的子区域做不对称的设计，可以补偿曲面面板成型时的位置偏差，从而改善曲面面板的视角以及色偏。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。

Claims (17)

  1. 一种曲面液晶显示面板，其包含：
    一阵列基板，排列设有多个像素单元，每一像素单元具有一左子区域及一右子区域；
    一对向基板，对应所述像素单元排列设有多个单元格；及
    一液晶层，设于所述阵列基板及所述对向基板之间；
    其中，所述阵列基板分为中央区段、左侧区段及右侧区段；其中在所述中央区段的像素单元的右子区域的宽度等于其左子区域的宽度；在所述左侧区段的像素单元的右子区域的宽度大于其左子区域的宽度，在所述左侧区段的最左侧的像素单元的右子区域的宽度大于其左子区域的宽度的一差值为一第一补偿值；及在所述右侧区段的像素单元的左子区域的宽度大于其右子区域的宽度，在所述右侧区段最右侧的像素单元的左子区域的宽度大于其右子区域的宽度的一差值为一第二补偿值；所述第一补偿值等于所述第二补偿值。
  2. 如权利要求1所述的曲面液晶显示面板，其中所述第一补偿值为所述左侧区段最左侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值；及所述第二补偿值为所述右侧区段最右侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值。
  3. 如权利要求2所述的曲面液晶显示面板，其中在所述阵列基板的左侧区段上，所述像素单元的右子区域的宽度大于其左子区域的宽度的差值是从第一补偿值向右递减；以及在所述阵列基板的右侧区段上，所述像素单元的左子区域的宽度大于其右子区域的宽度的差值是从第二补偿值向左递减。
  4. 如权利要求3所述的曲面液晶显示面板，其中所述差值递减是依一线性关系递减。
  5. 如权利要求3所述的曲面液晶显示面板，其中所述差值递减是依一函数关系递减。
  6. 一种曲面液晶显示面板，其包含：
    一阵列基板，排列设有多个像素单元，每一像素单元具有一左子区域及一右子区域；
    一对向基板，对应所述像素单元排列设有多个单元格；及
    一液晶层，设于所述阵列基板及所述对向基板之间；
    其中，所述阵列基板分为中央区段、左侧区段及右侧区段；其中在所述中央区段的像素单元的右子区域的宽度等于其左子区域的宽度；在所述左侧区段的像素单元的右子区域的宽度大于其左子区域的宽度；及在所述右侧区段的像素单元的左子区域的宽度大于其右子区域的宽度。
  7. 如权利要求6所述的曲面液晶显示面板，其中在所述左侧区段的最左侧的像素单元的右子区域的宽度大于其左子区域的宽度的一差值为一第一补偿值；在所述右侧区段最右侧的像素单元的左子区域的宽度大于其右子区域的宽度的一差值为一第二补偿值；所述第一补偿值为所述左侧区段最左侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值；及所述第二补偿值为所述右侧区段最右侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值。
  8. 如权利要求7所述的曲面液晶显示面板，其中所述第一补偿值等于所述第二补偿值。
  9. 如权利要求7所述的曲面液晶显示面板，其中在所述阵列基板的左侧区段上，所述像素单元的右子区域的宽度大于其左子区域的宽度的差值是从第一补偿值向右递减；以及在所述阵列基板的右侧区段上，所述像素单元的左子区域的宽度大于其右子区域的宽度的差值是从第二补偿值向左递减。
  10. 如权利要求9所述的曲面液晶显示面板，其中所述差值递减是依一线性关系递减。
  11. 如权利要求9所述的曲面液晶显示面板，其中所述差值递减是依一函数关系递减。
  12. 一种曲面液晶显示面板的阵列基板，其排列设有多个像素单元，每一像素单元具有一左子区域及一右子区域，所述像素单元对应于一对向基板的多个单元格；其中，所述阵列基板分为中央区段、左侧区段及右侧区段；其中在所述中央区段的像素单元的右子区域的宽度等于其左子区域的宽度；在所述左侧区段的像素单元的右子区域的宽度大于其左子区域的宽度；及在所述右侧区段的像素单元的左子区域的宽度大于其右子区域的宽度。
  13. 如权利要求12所述的阵列基板，其中在所述左侧区段的最左侧的像素单元的右子区域的宽度大于其左子区域的宽度的一差值为一第一补偿值；在所述右侧区段最右侧的像素单元的左子区域的宽度大于其右子区域的宽度的一差值为一第二补偿值；所述第一补偿值为所述左侧区段最左侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值；及所述第二补偿值为所述右侧区段最右侧的像素单元与对应的对向基板的单元格在面板弯曲时的偏差值。
  14. 如权利要求13所述的阵列基板，其中所述第一补偿值等于所述第二补偿值。
  15. 如权利要求13所述的阵列基板，其中 在所述阵列基板的左侧区段上，所述像素单元的右子区域的宽度大于其左子区域的宽度的差值是从第一补偿值向右递减；以及在所述阵列基板的右侧区段上，所述像素单元的左子区域的宽度大于其右子区域的宽度的差值是从第二补偿值向左递减。
  16. 如权利要求15所述的阵列基板，其中所述差值递减是依一线性递减关系。
  17. 如权利要求15所述的阵列基板，其中所述差值递减是依一函数关系递减。
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