WO2019144482A1 - 显示面板的Mura修补方法 - Google Patents

显示面板的Mura修补方法 Download PDF

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WO2019144482A1
WO2019144482A1 PCT/CN2018/079522 CN2018079522W WO2019144482A1 WO 2019144482 A1 WO2019144482 A1 WO 2019144482A1 CN 2018079522 W CN2018079522 W CN 2018079522W WO 2019144482 A1 WO2019144482 A1 WO 2019144482A1
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area
boundary
image
width dimension
display panel
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PCT/CN2018/079522
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English (en)
French (fr)
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张华�
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深圳市华星光电半导体显示技术有限公司
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Priority to US16/077,422 priority Critical patent/US10970846B1/en
Publication of WO2019144482A1 publication Critical patent/WO2019144482A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/13—Edge detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/12—Edge-based segmentation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • 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
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20112—Image segmentation details
    • G06T2207/20132—Image cropping
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30121—CRT, LCD or plasma display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70—SSIS architectures; Circuits associated therewith
    • H04N25/71—Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a Mura repairing method for a display panel of a liquid crystal display device.
  • the liquid crystal display panel Due to factors such as process offset and characteristics difference between liquid crystal molecules in the production process of the liquid crystal display panel (LCD/OLED panel), the liquid crystal display panel will show differences in the brightness of each area under the solid color fixed gray scale screen to form a display.
  • the phenomenon that the panel brightness is uneven (Mura).
  • the Mura repairing system of the related art liquid crystal display panel is mainly composed of a camera and a corresponding software algorithm.
  • the camera captures the gray level Mura condition of the liquid crystal display panel, and the software performs image processing calculation, and compares the surrounding area and the central area with the brightness of the central area of the panel as a reference.
  • the compensation gray scale value required for the brightness adjustment of the Mura position under the current gray level is calculated (the gray scale value of the dark area needs to be increased, and the compensation data is Positive number; the gray level value of the bright area needs to be reduced, the compensation data is negative), and finally the Mura compensation data of the fixed position pixel is stored in the flash according to the format required by the screen driver board chip (TCON IC), and the TCON IC starts working.
  • TCON IC screen driver board chip
  • the Mura compensation data is read from the flash, and the Mura compensation data is internally calculated corresponding to the input signal (gray scale value), and the brightness is changed by adjusting the gray scale value of each area, thereby improving the brightness and darkness of the overall screen of the panel. Sex.
  • the Mura repair effect in the related art depends on the accuracy of the Mura compensation data, that is, the software accurately converts the gray scale value to be adjusted according to the light and dark contrast, and another important factor is to accurately locate the effective display area of the panel, so that the software can Correctly calculate the exact position of Mura in the panel display area to avoid matching the correct Mura compensation data to the wrong position.
  • the software locates the display area of the liquid crystal display panel according to the grayscale image captured by the camera (positioned with bright and dark borders)
  • the light leakage area is also incorrectly calculated as the display of the liquid crystal display panel.
  • the displayed display area of the liquid crystal display panel is larger than the actual size, and the calculated compensation data of the light leakage area will eventually act on the actual display area of the liquid crystal display panel, resulting in compensation error, thereby affecting the overall Mura repair effect of the liquid crystal display panel.
  • the present invention provides a Mura repair method for a display panel, and a Mura repair method for a display panel, the method comprising the following steps:
  • Step S1 When positioning the display area of the display panel, using the first image display within the boundary of the display area of the display panel, the first image includes a first white area having a rectangular shape in the middle and a rectangular band shape around the first a black area, and setting a width dimension of the long axis of the first black area of the first image and a width dimension of the short axis side as a width dimension of the first preset pixel;
  • Step S2 capturing an image of the display panel processed by the step S1 by using a CCD, determining a boundary of the first white area of the first image according to a light-dark boundary of the first image, and defining a The first white area boundary is a;
  • Step S3 using a second image display in the display area of the display panel, the second image includes a second black area having a rectangular shape in the middle and a second white area surrounded by a rectangular band shape, and the The long axis side and the width dimension and the width dimension of the short axis side of the second white area of the two images are set to a width size of the second preset pixel, and the width dimension of the second preset pixel is different from the first pre Let the width of the pixels be different;
  • Step S4 capturing an image of the display panel processed by the step S3 by using a CCD, and determining a boundary of the second black area of the second image according to a light-dark boundary of the second image, defining a The boundary of the two black areas is b;
  • Step S5 using the Mura compensation system, according to the difference between the boundary a and the boundary b of the positioning, the screen area of the width dimension of the long axis side and the width dimension of the short axis side being the width dimension of the third preset pixel are obtained.
  • a size on the image captured by the CCD wherein a width dimension of the third preset pixel is a difference between a width dimension of the second preset pixel and a width dimension of the first preset pixel;
  • Step S6 on the basis of the obtained boundary a, extending a preset compensation area outwardly, the size of the width of the compensation area pixel on the image captured by the CCD, according to the third preset pixel
  • the size of the screen area of the width dimension is determined on the image taken by the CCD to obtain the boundary of the actual display of the display panel, and the boundary of the actual display of the display panel is defined as c;
  • Step S7 cutting the image captured by the CCD along the boundary c by using the Mura compensation system, and performing Mura repair processing on the cut image.
  • the width dimension of the compensation area pixel is a width dimension of the third preset pixel.
  • the second preset pixel has a width dimension that is twice the width dimension of the first preset pixel.
  • the width of the first predetermined pixel is 100 pixels on the long axis side and 100 pixels on the short axis side.
  • the width of the second predetermined pixel is 200 pixels on the long axis side and 200 pixels on the short axis side.
  • the Mura repairing method of the display panel of the present invention determines by displaying the first image and setting its black area to the width dimension of the first preset pixel in the display area of the display panel.
  • the boundary a of its black area; and the boundary b of its white area is determined by displaying the second image and setting its white area to the width dimension of the second predetermined pixel.
  • the boundary C that determines the actual display of the display panel is then calculated from the boundary a and the boundary b using the Mura compensation system.
  • the Mura repairing method of the above display panel of the present invention can accurately locate the boundary of the actual display area of the display panel in the case where the display panel has light leakage, thereby avoiding erroneous Mura repair caused by light leakage, so that the display panel is Mura repair results are more accurate.
  • FIG. 1 is a flow chart of a method for repairing a Mura of a display panel of the present invention
  • FIG. 2 is a schematic structural view corresponding to step S1 of the Mura repairing method of the display panel of the present invention
  • FIG. 3 is a schematic structural view corresponding to step S3 of the Mura repairing method of the display panel of the present invention
  • FIG. 4 is a schematic structural view corresponding to step S5 of the Mura repairing method of the display panel of the present invention.
  • FIG. 5 is a schematic structural diagram corresponding to step S7 of the Mura repairing method of the display panel of the present invention.
  • FIG. 1 is a flow chart of a method for repairing a Mura of a display panel according to the present invention.
  • the invention provides a Mura repairing method for a display panel, the method comprising the following steps:
  • Step S1 When positioning the display area of the display panel, display is performed using a first image having a rectangle in the display area of the display panel.
  • the first image includes a first white area 21 having a rectangular shape in the middle and a first black area 22 surrounded by a rectangular band, that is, the first black area 22 surrounds the first white area.
  • 21 shows that the rectangular band shape refers to a rectangular structure in which a rectangular cutout region is disposed in the middle; and the width dimension L1 and the minor axis edge 222 of the long axis edge 221 of the first black region 22 of the first image are made.
  • the width dimension L2 is set to the width dimension of the first preset pixel.
  • all of the liquid crystal display images have a rectangular shape.
  • the square is a special rectangle. If the display area is a square, the lengths of the long axis and the short axis are the same, which is also achievable.
  • the width dimension L2 of the first preset pixel may be a fixed pixel value.
  • the long axis edge 221 of the first black region 22 has a width dimension of 100 pixels, and the first black region.
  • the width dimension short edge side 222 of 22 is 100 pixels.
  • the width dimension of the long axis side 221 and the short axis side 222 is not limited to the same.
  • Step S2 capturing an image of the display panel processed by the step S1 by using a CCD, according to the light and dark boundary of the first image, that is, the alternating of the first black area 22 and the first white area 21.
  • a boundary a boundary of the first white area 21 of the first image at the center of the display panel is determined, and a boundary of the first white area 21 is defined as a.
  • step S3 similarly to step S1, the second image display is used in the display area of the display panel.
  • the second image includes a second black area 31 having a rectangular shape in the middle and a second white area 32 surrounded by a rectangular band, that is, the second white area 32 surrounds the second black area. 31 is displayed; and the width dimension L3 of the long-axis side 321 and the width dimension L4 of the minor-axis side 322 of the second white region 32 of the second image are set to the width dimension of the second predetermined pixel.
  • the width dimension of the second preset pixel is different from the width dimension of the first preset pixel.
  • the width dimension of the second preset pixel may be larger or smaller than the width dimension of the first preset pixel.
  • the width dimension of the second preset pixel may be greater than the size of the first preset pixel width.
  • the width of the second predetermined pixel is twice the width of the first predetermined pixel.
  • the width of the long axis 321 of the second white region 32 is 200 pixels
  • the width of the minor axis 322 of the second white region 32 is 200 pixels.
  • Step S4 capturing an image of the display panel processed by the step S3 by using a CCD, according to the light and dark boundary of the second image, that is, the alternating of the second black area 31 and the second white area 32 a boundary, a boundary of the second black region 31 of the second image is determined, and a boundary of the second black region 31 is defined as b.
  • Step S5 referring to FIG. 4, using the Mura compensation system, according to the difference between the boundary a and the boundary b of the positioning, the screen area where the long axis side and the short axis side are the width of the third preset pixel is obtained.
  • the size of the third preset pixel is the difference between the width dimension of the second preset pixel and the width dimension of the first preset pixel.
  • the first axis has a long axis width dimension L1 of 100 pixels, a short axis edge width dimension L2 of 100 pixels, and the second predetermined pixel has a long axis edge width dimension L3 of 100 pixels.
  • the pixel and the short-axis side width dimension L4 are 100 pixels, and the width dimension of the long-axis side and the width dimension of the short-axis side of the third preset pixel are both 100 pixels. According to the difference between the boundary a and the boundary b of the CCD captured image, the size of the screen region of the third preset pixel on the image taken by the CCD is obtained.
  • step S6 on the basis of the obtained boundary a, the preset compensation area is extended outwardly, and the actual display boundary of the display panel is obtained, and the boundary actually displayed by the display panel is defined as c.
  • the size of the width of the preset compensation area on the image captured by the CCD is determined according to the size of the picture area of the width of the third preset pixel on the image taken by the CCD.
  • the preset compensation area is the area between the boundary a and the actual display boundary of the display panel.
  • the width of the compensation area is known for most pixels, but the size of the compensation area is unknown on the image taken by the CCD.
  • the previous steps S1-S5 are for determining the size of the width of the compensation area on the image taken by the CCD.
  • step S5 the size of the third preset pixel having a long axis width of 100 pixels and a short axis width of 100 pixels is obtained on the image captured by the CCD, if the length of the long axis of the compensation region is The width of the third predetermined pixel is 100 pixels, and the width of the third predetermined pixel is exactly equal to the width of the compensation area, as shown in FIG.
  • the width dimension of the compensation area may not be equal to the width dimension of the third preset pixel, and the image of the compensation area captured by the CCD needs to be determined according to the proportional relationship between the width dimension of the compensation area and the width dimension of the third preset pixel. The size on the top.
  • Step S7 as shown in FIG. 5, the image captured by the CCD is cut along the boundary c by using the Mura compensation system, thereby obtaining an actual display area of the display panel (as shown in FIG. 5), and The cut image is subjected to Mura repair processing. Since the Mura repair process is the actual display area size of the display panel, the accuracy of the Mura repair is improved, the repair effect is improved, and the Mura repair method is not affected by light leakage.
  • the Mura repairing method of the display panel of the present invention determines by displaying the first image and setting its black area to the width dimension of the first preset pixel in the display area of the display panel.
  • the boundary a of its black area; and the boundary b of its white area is determined by displaying the second image and setting its white area to the width dimension of the second predetermined pixel.
  • the boundary C that determines the actual display of the display panel is then calculated from the boundary a and the boundary b using the Mura compensation system.
  • the Mura repairing method of the above display panel of the present invention can accurately locate the boundary of the actual display area of the display panel in the case where the display panel has light leakage, thereby avoiding erroneous Mura repair caused by light leakage, so that the display panel is Mura repair results are more accurate.

Abstract

一种显示面板的Mura修补方法，该方法包括如下步骤：使所述第一图像的所述第一黑色区域设置为第一预设像素的宽度尺寸；确定所述第一白色区域的边界a；使所述第二图像的所述第二白色区域设置为第二预设像素的宽度尺寸；确定所述第二黑色区域的边界b；利用Mura补偿系统根据定位的所述边界a和所述边界b的差异，确定长轴边和短轴边均为第三预设像素的宽度尺寸的画面区域在CCD拍摄的图像上的大小；在得到的所述边界a的基础上，围绕其往外扩展预设的补偿区域；利用所述Mura补偿系统沿所述边界c切割所述CCD拍摄的图像，并对该切割后的图像进行Mura修补处理（S7）。与相关技术相比，该显示面板的Mura修补方法修补精确度更高。

Description

显示面板的Mura修补方法 技术领域
本发明涉及一种液晶显示技术领域，尤其涉及一种用于液晶显示装置的显示面板的Mura修补方法。
背景技术
随着立体显示技术的发展，对于电视、电影等，人们越来越多的追求立体显示的高清逼真体验效果，而液晶面板则是实现该目的的主要部件。
由于液晶显示面板(LCD/OLED panel)在生产过程中存在制程偏移、液晶分子之间特性差异等因素，液晶显示面板在纯色固定灰阶画面下会显现各区域位置的亮度存在差异，形成显示面板亮度不均匀(Mura)的现象。
相关技术的液晶显示面板的Mura修补系统主要由相机搭配相应软体算法组成，相机拍摄液晶显示面板灰阶Mura状况，软体进行图像处理计算，以面板中心区域亮度为基准，比对周围区域与中心区域的亮度差异，根据面板gamma曲线(亮度与灰阶的一一对应关系曲线)换算出当前灰阶下Mura位置亮度调整需要的补偿灰阶数值(偏暗区域的灰阶值需要提高，补偿数据为正数；偏亮区域的灰阶值需要降低，补偿数据为负数)，最后将固定位置像素的Mura补偿数据按照屏驱动板芯片(TCON IC)需求的格式存储在flash中，TCON IC开始工作时会从flash中读取Mura补偿数据，内部将Mura补偿数据与输入信号(灰阶值)作相应运算，通过调整各区域的灰阶值来改变亮度，以此提高面板整体画面的亮、暗均一性。
相关技术中Mura修补效果取决于Mura补偿数据的准确性，即软体要根据亮暗对比准确换算出需要调整的灰阶数值，另一个重要因素是要准确定位出面板有效显示区域位置，这样软体才能正确计算Mura在面板显 示区域的准确位置，避免将正确的Mura补偿数据对应到了错误的位置。
然而，由于液晶显示面板四周存在漏光现象，软体根据相机拍摄到的灰阶图片定位液晶显示面板的显示区域时(以亮暗边界定位)，会错误的将漏光区域也计算成液晶显示面板的显示区域，定位出的液晶显示面板显示区域比实际偏大，计算出的漏光区域的补偿数据最终会作用于液晶显示面板实际显示区域，导致补偿错误，从而影响液晶显示面板的整体Mura修补效果。
因此，有必要提供一种新的显示面板的Mura修补方法以解决上述问题。
发明内容
本发明的目的在于提供一种修补效果准确的显示面板的Mura修补方法。
为了达到上述目的，本发明提供了一种显示面板的Mura修补方法，一种显示面板的Mura修补方法，该方法包括如下步骤：
步骤S1、定位显示面板的显示区域时，在所述显示面板的显示区域边界内使用第一图像显示，所述第一图像包括中间呈矩形的第一白色区域和四周呈矩形环带状的第一黑色区域，并使所述第一图像的所述第一黑色区域的长轴这的宽度尺寸和短轴边的宽度尺寸设置为第一预设像素的宽度尺寸；
步骤S2、利用CCD拍摄经所述步骤S1处理后的所述显示面板的图像，根据所述第一图像的亮暗边界，确定所述第一图像的所述第一白色区域的边界，定义所述第一白色区域边界为a；
步骤S3、在所述显示面板的显示区域内使用第二图像显示，所述第二图像包括中间呈矩形的第二黑色区域和四周呈矩形环带状的第二白色区域，并使所述第二图像的所述第二白色区域的长轴边和宽度尺寸和短轴边的宽度尺寸设置为第二预设像素的宽度尺寸，所述第二预设像素的宽度尺寸与所述第一预设像素的宽度尺寸相异；
步骤S4、利用CCD拍摄经所述步骤S3处理后的所述显示面板的图像，根据所述第二图像的亮暗边界，确定所述第二图像的所述第二黑色区域的边界，定义第二黑色区域的边界为b；
步骤S5、利用Mura补偿系统根据定位的所述边界a和所述边界b的差异，得出长轴边的宽度尺寸和短轴边的宽度尺寸为第三预设像素的宽度尺寸的画面区域在CCD拍摄的图像上的大小，所述第三预设像素的宽度尺寸为所述第二预设像素的宽度尺寸与所述第一预设像素的宽度尺寸之差；
步骤S6、在得到的所述边界a的基础上，围绕其往外扩展预设的补偿区域，所述补偿区域像素的宽度尺寸在CCD拍摄的图像上的大小，根据所述第三预设像素的宽度尺寸的画面区域在CCD拍摄的图像上的大小确定得到所述显示面板的实际显示的边界，定义所述显示面板实际显示的边界为c；
步骤S7、利用所述Mura补偿系统沿所述边界c切割所述CCD拍摄的图像，并对该切割后的图像进行Mura修补处理。
优选的，所述补偿区域像素的宽度尺寸为所述第三预设像素的宽度尺寸。
优选的，所述第二预设像素的宽度尺寸为所述第一预设像素的宽度尺寸的两倍。
优选的，所述第一预设像素的宽度尺寸为长轴边为100个像素，短轴边为100个像素。
优选的，所述第二预设像素的宽度尺寸为长轴边为200个像素，短轴边为200个像素。
与相关技术相比，本发明的显示面板的Mura修补方法通过在所述显示面板的显示区域内通过显示所述第一图像并使其黑色区域设置为第一预设像素的宽度尺寸，以确定其黑色区域的所述边界a；并通过显示所述第二图像并使其白色区域设置为第二预设像素的宽度尺寸，以确定其白色 区域的所述边界b。再利用所述Mura补偿系统根据所述边界a和所述边界b计算确定所述显示面板的实际显示的所述边界c。本发明的上述显示面板的Mura修补方法在所述显示面板存在漏光的情况下，仍能准确定位所述显示面板实际显示区域的边界，避免因漏光导致错误的Mura修补，使得所述显示面板的Mura修补效果更准确。
附图说明
图1为本发明显示面板的Mura修补方法的流程框图；
图2为本发明显示面板的Mura修补方法步骤S1对应的结构示意图；
图3为本发明显示面板的Mura修补方法步骤S3对应的结构示意图；
图4为本发明显示面板的Mura修补方法步骤S5对应的结构示意图；
图5为本发明显示面板的Mura修补方法步骤S7对应的结构示意图。
具体实施方式
下面结合附图和实施方式对本发明作进一步说明。
请参阅图1，为本发明显示面板的Mura修补方法的流程框图。本发明提供了一种显示面板的Mura修补方法，该方法包括如下步骤：
步骤S1、定位显示面板的显示区域时，在所述显示面板的显示区域内使用呈矩形的第一图像实现显示。
请结合参阅图2，所述第一图像包括中间呈矩形的第一白色区域21和四周呈矩形环带状的第一黑色区域22，即所述第一黑色区域22环绕所述第一白色区域21显示，所述矩形环带状是指中间设置矩形镂空区域的矩形结构；并使所述第一图像的所述第一黑色区域22的长轴边221的宽度尺寸L1和短轴边222的宽度尺寸L2设置为第一预设像素的宽度尺寸。本实施方式中，液晶显示图像全部为矩形形状。
需要说明的是，正方形为特殊的矩形，若显示区域为正方形时，其长轴边和短轴边长度相同，这也是同理可实现的。本实施方式中，所述第一预设像素的宽度尺寸L2可为固定像素值，比如，所述第一黑色区域22的长轴边221的宽度尺寸为100个像素，所述第一黑色区域22的宽度尺 寸短轴边222为100个像素当然，长轴边221和短轴边222的宽度尺寸并非限于相同。
步骤S2、利用CCD拍摄经所述步骤S1处理后的所述显示面板的图像，根据所述第一图像的亮暗边界，即所述第一黑色区域22与所述第一白色区域21的交替边界，确定所述显示面板中心的所述第一图像的所述第一白色区域21的边界，定义所述第一白色区域21的边界为a。
步骤S3、同理于步骤S1，在所述显示面板的显示区域内使用第二图像显示。
请结合参阅图3，所述第二图像包括中间呈矩形的第二黑色区域31和四周呈矩形环带状的第二白色区域32，即所述第二白色区域32环绕所述第二黑色区域31显示；并使所述第二图像的所述第二白色区域32的长轴边321的宽度尺寸L3和短轴边322的宽度尺寸L4设置为第二预设像素的宽度尺寸。
所述第二预设像素的宽度尺寸与所述第一预设像素的宽度尺寸相异。
即所述第二预设像素的宽度尺寸可大于或小于所述第一预设像素的宽度尺寸。
本实施方式中，使所述第二预设像素的宽度尺寸可大于所述第一预设像素宽度的尺寸。比如，使所述第二预设像素的宽度尺寸为所述第一预设像素的宽度尺寸的两倍。
即所述第二白色区域32的长轴边321的宽度尺寸为200个像素，所述第二白色区域32的短轴边322的宽度尺寸为200个像素。
步骤S4、利用CCD拍摄经所述步骤S3处理后的所述显示面板的图像，根据所述第二图像的亮暗边界，即所述第二黑色区域31与所述第二白色区域32的交替边界，确定所述第二图像的所述第二黑色区域31的边界，定义所述第二黑色区域31的边界为b。
步骤S5、请结合参阅图4，利用Mura补偿系统根据定位的所述边界a和所述边界b的差异，得出长轴边和短轴边均为第三预设像素的宽度尺 寸的画面区域在CCD拍摄的图像上的大小，所述第三预设像素的宽度尺寸为所述第二预设像素的宽度尺寸与所述第一预设像素的宽度尺寸之差。
例如，所述第一预设像素的长轴边宽度尺寸L1为100个像素，短轴边的宽度尺寸L2为100个像素；所述第二预设像素的长轴边宽度尺寸L3为100个像素，短轴边宽度尺寸L4为100个像素，则所述第三预设像素的长轴边的宽度尺寸和短轴边的宽度尺寸均为100个像素。根据CCD拍摄图像上边界a和边界b之间的差异，得到了所述第三预设像素的画面区域在CCD拍摄的图像上的大小。
步骤S6、在得到的所述边界a的基础上，围绕其往外扩展预设的补偿区域，得到所述显示面板的实际显示的边界，定义所述显示面板实际显示的边界为c，而所述预设的补偿区域的宽度尺寸在CCD拍摄的图像上的大小，是根据所述第三预设像素的宽度尺寸的画面区域在CCD拍摄的图像上的大小确定的。预设的补偿区域为边界a与显示面板的实际显示边界之间的区域，该补偿区域的宽度尺寸为多数像素是已知的，但补偿区域的宽度尺寸在CCD拍摄的图像上的大小是未知的，前面步骤S1-S5就是为了确定该补偿区域的宽度尺寸在CCD拍摄的图像上的大小。
例如步骤S5中得到了长轴边宽度尺寸为100个像素、短轴边宽度尺寸为100个像素尺寸的第三预设像素在CCD拍摄的图像上的大小，假如补偿区域的长轴边宽度尺寸为100个像素、短轴边宽度尺寸为100个像素，那么第三预设像素的宽度尺寸正好与补偿区域的宽度尺寸相等，如图4中的41。当然，补偿区域的宽度尺寸也可以不与第三预设像素的宽度尺寸相等，需要根据补偿区域的宽度尺寸与第三预设像素的宽度尺寸之间的比例关系确定补偿区域在CCD拍摄的图像上的大小。
步骤S7、请结合图5所示，利用所述Mura补偿系统沿所述边界c切割所述CCD拍摄的图像，即得到所述显示面板的实际显示区域(如图5所示)，并对该切割后的图像进行Mura修补处理。因Mura修补处理为所述显示面板的实际显示区域大小，则提高了Mura修补的精确度，提高 了修补效果，且该Mura修补方法不受漏光影响。
与相关技术相比，本发明的显示面板的Mura修补方法通过在所述显示面板的显示区域内通过显示所述第一图像并使其黑色区域设置为第一预设像素的宽度尺寸，以确定其黑色区域的所述边界a；并通过显示所述第二图像并使其白色区域设置为第二预设像素的宽度尺寸，以确定其白色区域的所述边界b。再利用所述Mura补偿系统根据所述边界a和所述边界b计算确定所述显示面板的实际显示的所述边界c。本发明的上述显示面板的Mura修补方法在所述显示面板存在漏光的情况下，仍能准确定位所述显示面板实际显示区域的边界，避免因漏光导致错误的Mura修补，使得所述显示面板的Mura修补效果更准确。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (5)

  1. 一种显示面板的Mura修补方法，其中，该方法包括如下步骤：
    步骤S1、定位显示面板的显示区域时，在所述显示面板的显示区域内使用第一图像显示，所述第一图像包括中间呈矩形的第一白色区域和四周呈矩形环带状的第一黑色区域，并使所述第一图像的所述第一黑色区域的长轴边的宽度尺寸和短轴边的宽度尺寸设置为第一预设像素的宽度尺寸；
    步骤S2、利用CCD拍摄经所述步骤S1处理后的所述显示面板的图像，根据所述第一图像的亮暗边界，确定所述第一图像的所述第一白色区域的边界，定义所述第一白色区域的边界为a；
    步骤S3、在所述显示面板的显示区域内使用第二图像显示，所述第二图像包括中间呈矩形的第二黑色区域和四周呈矩形环带状的第二白色区域，并使所述第二图像的所述第二白色区域的长轴边的宽度尺寸和短轴边的宽度尺寸设置为第二预设像素的宽度尺寸，所述第二预设像素的宽度尺寸与所述第一预设像素的宽度尺寸相异；
    步骤S4、利用CCD拍摄经所述步骤S3处理后的所述显示面板的图像，根据所述第二图像的亮暗边界，确定所述第二图像的第二黑色区域的边界，定义所述第二黑色区域边界为b；
    步骤S5、利用Mura补偿系统根据定位的所述边界a和所述边界b的差异，得出长轴边的宽度尺寸和短轴边的宽度尺寸为第三预设像素的宽度尺寸的画面区域在CCD拍摄的图像上的大小，所述第三预设像素的宽度尺寸为所述第二预设像素的宽度尺寸与所述第一预设像素的宽度尺寸之差；
    步骤S6、在得到的所述边界a的基础上，围绕其往外扩展预设的补偿区域，所述预设的补偿区域的宽度尺寸在CCD拍摄的图像上的大小，根据所述第三预设像素的宽度尺寸的画面区域在CCD拍摄的图像上的大 小，得到所述显示面板的实际显示的边界，定义所述显示面板实际显示的边界为c；
    步骤S7、利用所述Mura补偿系统沿所述边界c切割所述CCD拍摄的图像，并对该切割后的图像进行Mura修补处理。
  2. 根据权利要求1所述的现实面板的Mura修补方法，其中，所述补偿区域像素的宽度尺寸为所述第三预设像素的宽度尺寸。
  3. 根据权利要求1所述的显示面板的Mura修补方法，其中，所述第二预设像素的宽度尺寸为所述第一预设像素的宽度尺寸的两倍。
  4. 根据权利要求1所述的显示面板的Mura修补方法，其中，所述第一预设像素的宽度尺寸为长轴边为100个像素，短轴边为100个像素。
  5. 根据权利要求4所述的显示面板的Mura修补方法，其中，所述第二预设像素的宽度尺寸为长轴边为200个像素，短轴边为200个像素。
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