WO2018201512A1 - 一种显示面板的mura现象补偿方法及显示面板 - Google Patents

一种显示面板的mura现象补偿方法及显示面板 Download PDF

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Publication number
WO2018201512A1
WO2018201512A1 PCT/CN2017/083823 CN2017083823W WO2018201512A1 WO 2018201512 A1 WO2018201512 A1 WO 2018201512A1 CN 2017083823 W CN2017083823 W CN 2017083823W WO 2018201512 A1 WO2018201512 A1 WO 2018201512A1
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Prior art keywords
compensation value
pixels
mura
mura compensation
pixel
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PCT/CN2017/083823
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English (en)
French (fr)
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张华�
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深圳市华星光电技术有限公司
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Priority to EP17908113.8A priority Critical patent/EP3640930A4/en
Priority to JP2019560163A priority patent/JP2020522726A/ja
Priority to KR1020197035826A priority patent/KR102257160B1/ko
Priority to US15/552,273 priority patent/US10276112B2/en
Publication of WO2018201512A1 publication Critical patent/WO2018201512A1/zh

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    • 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
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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
    • G09G3/22—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 using controlled light sources
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present invention claims the prior application priority of the application No. CN201710305591.7, entitled “The mura phenomenon compensation method and display panel of a display panel”, which was filed on May 3, 2017, the contents of the above-mentioned prior application being introduced. The way is incorporated into this text.
  • the present invention belongs to the field of display technologies, and in particular, to a mura phenomenon compensation method and a display panel of a display panel.
  • a mura compensation method that is, a mura form in which a grayscale picture (a pure white picture of different brightness) is captured by an external camera, by comparing the brightness of the center position of the display panel, Calculate the difference between the brightness of the surrounding area and the center position, and then compensate the gray level of the mura position by reverse (the area brighter than the center position, lower the gray level to reduce the brightness; the darker area than the center position, increase the gray level to improve Brightness), so that the display panel as a whole achieves a relatively uniform brightness.
  • a grayscale picture a pure white picture of different brightness
  • the reverse compensation data is stored in the data memory.
  • the gray scale compensation data of each pixel is not stored in the data memory.
  • the general practice is to compress the area interval of n*n pixels (for example, 8*8 pixels), and each area generally stores gray scale compensation data of one pixel in the data memory, and gray scale compensation of other pixels in the area.
  • the data is calculated by linear interpolation calculation.
  • UHD (Ultra High Definition) resolution display panel (3840 * 2160 pixels, representing 3840 column pixels and 2160 rows of pixels) as an example, please refer to Figure 1, through 8 * 8 pixel interval Compression, forming 480 * 270 regions (the square dotted line in the figure forms an area), the data memory stores the first row of pixels, the ninth row of pixels, the 17th row of pixels, ...
  • the row pixel and the 2153th row pixel respectively correspond to the mura compensation corresponding to the first column pixel, the ninth column pixel, the 17th column pixel, ..., the 3825th column pixel, and the 3833th column pixel intersection position pixel (a circle is added to the pixel) Data, a total of 480*270 mura compensation data, in addition, in order to calculate the mura compensation data corresponding to the 3834th column pixel - the 3840th column pixel, and calculate the 2154th row pixel - the 2160th row pixel corresponding mura compensation data, by storing
  • the mura compensation data corresponding to the 3825th column pixel and the mura compensation data corresponding to the 3833th column pixel are calculated to obtain the compensation data corresponding to the 3841th column pixel (the circle is added to the virtual pixel in the figure), and there are 270 mura compensation data.
  • the data memory needs to store a total of 481*271 mura compensation data, and the mura compensation data of the remaining pixels is determined by the timing controller (Tcon IC) according to the existing 481*271 mura compensation numbers. Obtained by linear interpolation calculation.
  • the specific calculation method of the other pixels is as follows. Please continue to refer to FIG. 1 , and an area formed by 8*8 pixels in the first row to the eighth row and the first column to the eighth column will be described as an example.
  • the mura compensation value corresponding to the pixel of the first column and the pixel of the first row of pixel intersection is A'
  • the mura compensation value corresponding to the pixel of the ninth column and the pixel of the first row is B'
  • the mura compensation value corresponding to the 9-row pixel intersection position pixel is C'
  • the mura compensation value corresponding to the pixel of the 9th column pixel and the 9th row pixel intersection position is D'
  • Corresponding mura compensation value F', g' pixel corresponding mura compensation value G' after linear interpolation calculation E', F', G' are as follows:
  • X' and Y' are the number of rows and the number of columns of the pixel corresponding to the intersection of the first column and the first row, respectively.
  • the mura compensation data of the 3834 to 3840th row of pixels and the 2154th to 2160th row of pixels need to use the mura compensation data corresponding to the 3841th column and the 2161st row of pixels, so that 481*271 muras need to be stored.
  • the amount of stored data is relatively large, which results in a large storage space of the data memory, thereby increasing the cost.
  • a technical problem to be solved by the embodiments of the present invention is to provide a mura phenomenon compensation method and a display panel for a display panel. It can reduce the storage space of the display panel.
  • a mura phenomenon compensation method for a display panel including:
  • n*m pixels Compressing at an interval of n*m pixels, storing a mura compensation value corresponding to a central pixel of each region, wherein a mura compensation value of a central pixel of at least one region is an average mura compensation value of the corresponding region, the n, m An integer greater than or equal to 2;
  • the mura compensation value corresponding to the pixels other than the center pixel in the same region is obtained from the stored mura compensation value.
  • the mura compensation value corresponding to the central pixel of each region is the average mura compensation value of the corresponding region.
  • the step of obtaining the mura compensation value corresponding to the pixels other than the central pixel in the same region according to the stored mura compensation value includes:
  • the mura compensation value corresponding to the center pixel of the region in which the other pixel is located is used as the mura compensation value corresponding to the other pixel.
  • the mura compensation value corresponding to the other pixels is obtained according to the mura compensation value corresponding to the central pixel of the region where the other pixels are located and the mura compensation value corresponding to the central pixel of the adjacent region.
  • the edge of the display panel forms a plurality of special regions, and the special region includes pixels of n*a or b*m, wherein a is less than m and a is a positive integer, b is smaller than n and b is a positive integer.
  • the method further includes:
  • the mura compensation value corresponding to the central pixel of the special area is stored, wherein the mura compensation value corresponding to the central pixel is an average mura compensation value of the corresponding special area;
  • the mura compensation value corresponding to the pixels other than the center pixel of the special area is obtained according to the mura compensation value of the stored special area.
  • a second aspect of the present invention provides a display panel, including:
  • a storage unit for compressing a region of n*m pixels, and storing a mura compensation value corresponding to a central pixel of each region, wherein a mura compensation value of a central pixel of at least one region is an average mura compensation value of the corresponding region,
  • n and m are integers greater than or equal to 2;
  • a processing unit configured to obtain a mura compensation value corresponding to other pixels in the same region except the center pixel according to the stored mura compensation value.
  • the mura compensation value corresponding to the central pixel of each region is the average mura compensation value of the corresponding region.
  • the processing unit specifically includes:
  • a judging unit configured to determine whether the other pixels are located outside a row or column where the outermost center pixel of the display panel is located;
  • a processing subunit configured to: when the determination result of the determining unit is YES, the mura compensation value corresponding to the central pixel of the region where the other pixels are located is used as the mura compensation value corresponding to the other pixels; When the determination result is no, the mura compensation value corresponding to the other pixels is obtained according to the mura compensation value corresponding to the central pixel of the region where the other pixels are located and the mura compensation value corresponding to the central pixel of the adjacent region.
  • the storage space of the display panel can be reduced, thereby reducing the cost.
  • FIG. 1 is an arrangement diagram of pixels of a display panel of the prior art (a mura compensation value corresponding to a pixel circled in a panel storage map);
  • FIG. 2 is a flow chart of a mura phenomenon compensation method for a display panel according to an embodiment of the present invention
  • FIG. 3 is a view showing an arrangement of pixels of a display panel according to an embodiment of the present invention (a mura compensation value corresponding to a pixel surrounded by a circle in a memory panel of the display panel);
  • FIG. 4 is a flowchart of a mura phenomenon compensation method of a panel according to another embodiment of the present invention.
  • FIG. 5 is a mura compensation line (solid line representation) of one row/column pixel, one row/column mura compensation line (indicated by a dotted line), and one row/column pixel of the display panel are actually needed in another embodiment of the present invention.
  • a comparison map of the mura compensation lines shown by dashed lines;
  • FIG. 6 is a flowchart of a mura phenomenon compensation method of a panel according to still another embodiment of the present invention.
  • FIG. 7 is a schematic view showing the composition of a display panel according to an embodiment of the present invention.
  • the embodiment of the present invention provides a mura phenomenon compensation method for a display panel.
  • the display panel may be a liquid crystal display panel or other display panel.
  • the display panel is UHD (Ultra High Definition).
  • the display panel is taken as an example for description, that is, the resolution of the display panel reaches 3840*2160 (the following description takes the resolution 3840*2160 as an example for description.
  • the resolution of the display panel is not limited to the above resolution, and may also be a resolution of 1920*1080 or other resolution. Referring to FIG. 2 and FIG. 3, the method includes the following steps:
  • n and m be integers greater than or equal to 2;
  • n m
  • n and m are both 8.
  • the n and m may also be unequal, and the n and m may also be greater than or equal to 2 other integers.
  • the frame is an area, and the display panel stores the mura compensation value corresponding to the center pixel of each area (the center pixel in FIG. 3 is circled by a circle). Since there are only 480*270 areas, the display panel only needs to store 480*270 mura. Compensation value. Please continue to refer to FIG. 3 , which is an example of an area in the upper left corner of the display panel.
  • the area is defined by the first column of pixels C1 - the eighth column of pixels C8 and the first row of pixels R1 - the eighth row of pixels R8.
  • the central pixel of the region may be a pixel at the intersection of the fourth row of pixels R4 and the fourth column of pixels C4, or may be a pixel at the intersection of the fourth row of pixels R4 and the fifth column of pixels C5, or may be the fifth row of pixels R5 and
  • the pixel at the intersection of the fourth column pixel C4 may be a pixel at the intersection of the fifth row pixel R5 and the fifth column pixel C5.
  • the pixel at the intersection of the fourth row pixel R4 and the fourth column pixel C4 is The center pixel (circled by a circle in Fig. 3), the setting of the center pixel of other areas of the display panel also refers to the central pixel position of the area.
  • the central pixel is the most central pixel when there is a most central pixel in the region.
  • the mura compensation value corresponding to the central pixel of at least one region is an average mura compensation value of the corresponding region, for example, the mura compensation value of the central pixel is all of the region.
  • the sum of the mura compensation values of the pixels is divided by 64.
  • the mura compensation value of the central pixel of each region is the average mura compensation value of the corresponding region, and the average mura compensation value is obtained by the external mura patching system, and then correspondingly stored in the display panel.
  • the mura compensation value of the center pixel may also be the actual mura compensation value of the pixel instead of the average mura compensation value of the corresponding region.
  • the pixels of the same area in which the display panel is compressed include a center pixel and other pixels.
  • the mura compensation values corresponding to other pixels can be obtained, for example, the mura compensation values corresponding to other pixels are obtained by a linear interpolation calculation method, or the mura compensation values corresponding to other pixels of some special positions are obtained.
  • the mura compensation value corresponding to the central pixel of the region is directly assigned. At this time, the mura compensation value of the central pixel of the region is the average mura compensation value of the corresponding region.
  • the mura compensation value stored in the display panel is reduced compared with the prior art, the mura compensation value stored in the embodiment is 480*270, and the prior art needs to store 481*271, thereby storing the display panel. Space can be reduced, which can reduce costs.
  • step S120 the step of obtaining a mura compensation value corresponding to other pixels in the same region except the center pixel according to the stored mura compensation value includes:
  • the display panel is square, and the outermost side of the display panel includes a left outer side, a right outer side, an upper outer side, and a lower outer side, and the row or column where the central pixel is located at the outermost side of the display panel is the fourth column on the left outer side.
  • the right outer side is the 3836th column
  • the upper outer side is the 4th row
  • the lower outer side is the 2156th row
  • it is determined whether the other pixels are located outside the row or column where the central pixel is located at the outermost side of the display panel that is, Determining whether the other pixels are located outside the region of the fourth column of the display panel, the third row of pixels, the fourth row of pixels, and the second row of pixels, that is, whether the other pixels are located at the first of the display panel
  • the mura compensation value corresponding to the central pixel of the region where the other pixels are located is used as the mura compensation value corresponding to the other pixels.
  • the coordinates of the other pixels are (1, 1) (representing the pixel at the intersection of the first column of pixels and the first row of pixels, that is, the pixel at the top left corner), (1, 2160) ( Represents column coordinates, rows Coordinates), (3840, 1), (3840, 2160), (3, 4), (4, 3), etc.
  • the mura compensation value corresponding to the center pixel of the region in which the other pixel is located is corresponding to the other pixels
  • the mura compensation value for example, if the coordinates of the other pixels are (1, 1), the mura compensation value corresponding to the center pixel of the uppermost left region is given to the mura compensation value corresponding to the (1, 1) coordinate pixel, that is, The mura
  • the mura compensation value corresponding to the center pixel is the average mura compensation value of the corresponding region
  • the mura compensation value is used as the compensation value corresponding to the other pixels, and the unevenness is not caused, and the image is not
  • the mura compensation data of the 3834 to 3840th pixel and the 2154th to 2160th row of pixels is obtained by using the mura compensation corresponding to the 3841th column and the 2161th row of pixels (the circled pixel).
  • the mura compensation data of the 3841th column and the 2161th row of pixels are not accurate themselves (the pixels themselves are virtual pixels, which are obtained by calculation), resulting in the 3834-3840 column, the first The mura compensation data calculated by other pixels at 2154 to 2160 is more inaccurate, causing uneven brightness.
  • the mura compensation effect of the embodiment is better, and the mura compensation value that is actually needed is relatively close, which can improve the picture effect of the display panel, and because the row or column of the center pixel of the outermost side of the display panel is The other pixels are processed in this way, and the display panel does not need to store some compensation data as in the prior art.
  • the display panel can also undergo other processing, and it is also possible to store some compensation data without the like as in the prior art, for example, covering the other pixels through the frame.
  • the prior art is easy to leak light after the module is assembled, which also affects the calculation accuracy of the pixel mura compensation data of the first row and the first column.
  • the compensation value of the pixel at the edge of the display panel is It is the average mura compensation value directly assigned to the corresponding area, so that the edge is also relatively uniform.
  • S123 Calculate the mura compensation value corresponding to the other pixels according to the mura compensation value corresponding to the central pixel of the region where the other pixels are located and the mura compensation value corresponding to the central pixel of the adjacent region.
  • the other pixels are not located in the first column of pixels of the display panel - the third column of pixels, the 3857th column of pixels - 3860 columns of pixels, the first row of pixels - the third row of pixels and the 2157th row In the pixel - 2160 rows of pixels, that is, the other pixels are located in the area of the fourth column of the display panel - the 3856th row of pixels, the 4th row of pixels - the 2156th row of pixels, according to the area where the other pixels are located
  • the mura compensation value corresponding to the central pixel of the domain and the mura compensation value corresponding to the central pixel of the adjacent region are linearly interpolated to obtain the mura compensation value corresponding to the other pixels.
  • the mura compensation values E, G, and F are as follows:
  • X and Y are the number of rows and the number of columns of the corresponding pixel relative to the central pixel (4, 4), respectively.
  • the first column pixel - the third column pixel, the 3857 column pixel - 3860 column pixel, the first row pixel - the third row pixel, and the 2157th row pixel - 2160 row pixel which are not located in the display panel can be obtained.
  • the other pixels correspond to the mura compensation value, so that the mura compensation value corresponding to the pixels in the entire display panel can be obtained.
  • the edge of the display panel forms a plurality of special areas, and the special area includes pixels of n*a or b*m.
  • the mura phenomenon compensation method of the display panel includes steps S110 and S120. Also includes:
  • S130 storing a mura compensation value corresponding to a central pixel of the special area, where the mura compensation value corresponding to the central pixel is an average mura compensation value of the corresponding special area;
  • the coordinates of the central pixel may be (4, 3) or (5, 3), that is, the pixel of the fourth column intersects with the pixel of the third row.
  • the pixels or the pixels of the fifth column of pixels intersecting the pixels of the third row, the average mura compensation value is the sum of the mura compensation values corresponding to all the pixels of the corresponding special region divided by 40.
  • S140 Calculate, according to the mura compensation value of the stored special area, the mura compensation value corresponding to the pixels of the special area except the center pixel.
  • the mura compensation value corresponding to other pixels in the special area can be calculated by referring to S122 and S123, and will not be described here.
  • an embodiment of the present invention further provides a display panel.
  • the display panel package include:
  • a storage unit 110 configured to compress a region of n*m pixels, and store a mura compensation value corresponding to a central pixel of each region, wherein a mura compensation value of a central pixel of at least one region is an average mura compensation value of the corresponding region,
  • n and m are integers greater than or equal to 2;
  • the storage unit 110 is a data memory (flash), but the present invention is not limited thereto. In other embodiments of the present invention, the storage unit may also be a timing controller (TconIC). In the present embodiment, the mura compensation value of the center pixel of each region is the average mura compensation value of the corresponding region.
  • the processing unit 120 is configured to obtain a mura compensation value corresponding to other pixels in the same region except the center pixel according to the stored mura compensation value.
  • the processing unit 120 is a timing controller (Tcon IC).
  • the processing unit specifically includes:
  • a determining unit 121 configured to determine whether the other pixels are located outside a row or column where the outermost center pixel of the display panel is located;
  • the processing sub-unit 122 is configured to: when the determination result of the determining unit 121 is YES, the mura compensation value corresponding to the central pixel of the region where the other pixels are located is used as the mura compensation value corresponding to the other pixels; When the determination result of the unit 121 is NO, the mura compensation value corresponding to the other pixels is obtained according to the mura compensation value corresponding to the central pixel of the region where the other pixels are located and the mura compensation value corresponding to the central pixel of the adjacent region.
  • the present invention has the following advantages:
  • the storage space of the display panel can be reduced, thereby reducing the cost.

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Abstract

一种显示面板的mura现象补偿方法，包括以n*m像素的区域间隔做压缩，存储每个区域的中心像素对应的mura补偿值，其中，至少一个区域的中心像素的mura补偿值为相应区域的平均mura补偿值， n、m为大于或等于2的整数（S110）；根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值（S120）。还公开了一种显示面板。该mura现象补偿方法具有节省存储空间的优点。

Description

一种显示面板的mura现象补偿方法及显示面板
本发明要求2017年5月3日递交的发明名称为“一种显示面板的mura现象补偿方法及显示面板”的申请号CN201710305591.7的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明属于显示技术领域，具体地讲，涉及一种显示面板的mura现象补偿方法及显示面板。
背景技术
由于液晶显示器(Liquid Crystal Display，LCD)制程上的瑕疵，经常会导致生产出来的液晶显示器的显示面板亮度不均匀，形成各种各样的mura(mura是指显示器亮度不均匀,造成各种痕迹的现象)。
为了提升显示面板(panel)亮度的均匀性，目前已有mura补偿方法，即通过外置相机拍摄出灰阶画面(不同亮度的纯白画面)的mura形态，通过对比显示面板中心位置的亮度，计算出四周区域与中心位置亮度的差异，然后通过反向补偿mura位置的灰阶(比中心位置亮的区域，降低灰阶，以降低亮度；比中心位置暗的区域，提高灰阶，以提高亮度)，使显示面板整体达到比较一致的亮度。
一般反向的补偿数据都是存储在数据存储器(flash)中，同时，为了降低设计成本，数据存储器中并不会存储每一个像素的灰阶补偿数据。目前一般的做法是以n*n像素(例如8*8像素)的区域间隔做压缩，每个区域在数据存储器中一般存储其中一个像素的灰阶补偿数据，区域中的其他像素的灰阶补偿数据则通过线性插值计算算出。
以UHD(Ultra High Definition，超高清)分辨的显示面板(3840*2160个像素，代表3840列像素和2160行像素组成的区域)为例进行说明，请参见图1，通过8*8像素间隔做压缩，形成480*270个区域(图示中方形虚线形成一个区域)，数据存储器存储第1行像素、第9行像素、第17行像素、…第2145 行像素、第2153行像素分别与第1列像素、第9列像素、第17列像素、…、第3825列像素、第3833列像素交叉位置像素(像素外面加了个圆圈)对应的mura补偿数据，总共480*270个mura补偿数据，另外，为了计算获得第3834列像素-第3840列像素对应的mura补偿数据，以及计算第2154行像素-第2160行像素对应的mura补偿数据，通过存储的第3825列像素对应的mura补偿数据、第3833列像素对应的mura补偿数据计算获得第3841列像素对应的补偿数据(图示中虚像素外面加了个圆圈)，有270个mura补偿数据，通过第2145行像素对应的mura补偿数据、第2153行像素对应的补偿数据计算获得第2161行像素对应的mura补偿数据(图示中虚像素外面加了个圆圈)，有480个mura补偿数据，从而数据存储器一共需要存储481*271个mura补偿数据，其余像素的mura补偿数据则由时序控制器(Tcon IC)根据已有的481*271个mura补偿数据通过线性插值计算得出。
上述其他像素的具体计算方法如下，请继续参见图1，以第1行-第8行、第1列-第8列的8*8个像素形成的区域为例进行说明，在该区域中，已知第1列像素和第1行像素交叉位置像素对应的mura补偿值为A’，第9列像素和第1行像素交叉位置像素对应的mura补偿值为B’,第1列像素和第9行像素交叉位置像素对应的mura补偿值为C’,第9列像素和第9行像素交叉位置像素对应的mura补偿值为D’,e’像素对应的mura补偿值E’，f’像素对应的mura补偿值F’，g’像素对应的mura补偿值G’，经过线性插值计算E’、F’、G’如下：
E’＝[(8-Y’)*A’+Y’*C’]/8；
F’＝[(8-Y’)*B’+Y’*D’]/8；
G’＝[(8-X’)*E’+X’*F’]/8。
其中，X’、Y’分别为相应像素相对第1列和第1行交叉位置像素的行数目、列数目。
进一步参考上述计算方法可知，第3834～3840列像素、第2154～2160行像素的mura补偿数据计算需要用到第3841列、第2161行像素对应的mura补偿数据，从而需要存储481*271个mura补偿数据，由于数据存储器中需要存储481*217个mura补偿数据，存储的数据量比较大，导致数据存储器的存储空间需要较大，从而增加了成本。
发明内容
本发明实施例所要解决的技术问题在于，提供一种显示面板的mura现象补偿方法及显示面板。可减少显示面板的存储空间。
为了解决上述技术问题，本发明第一方面提供了一种显示面板的mura现象补偿方法，包括：
以n*m像素的区域间隔做压缩，存储每个区域的中心像素对应的mura补偿值，其中，至少一个区域的中心像素的mura补偿值为相应区域的平均mura补偿值，所述n、m为大于或等于2的整数；
根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值。
其中，每个区域的中心像素对应的mura补偿值为相应区域的平均mura补偿值。
其中，根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值的步骤具体包括：
判断所述其他像素是否位于显示面板最外侧中心像素所在的行或列之外的位置；
若是，则将该其他像素位于的区域的中心像素对应的mura补偿值作为该其他像素对应的mura补偿值。
其中，还包括步骤：
若否，则根据该其他像素位于的区域的中心像素对应的mura补偿值和相邻区域中心像素对应的mura补偿值线性插值计算获得所述其他像素对应的mura补偿值。
其中，所述n＝m。
其中，所述显示面板的边缘形成多数个特殊区，所述特殊区包含的像素为n*a或b*m，其中，a小于m且a为正整数，b小于n且b为正整数，所述方法还包括：
存储特殊区的中心像素对应的mura补偿值，其中，该中心像素对应的mura补偿值为相应特殊区的平均mura补偿值；
根据存储的特殊区的mura补偿值计算获得特殊区除中心像素之外的其他像素对应的mura补偿值。
其中，所述显示面板的分辨率为3840*2160，n＝m＝8，所述显示面板形成480*270个单独的区域。
本发明第二方面提供了一种显示面板，包括：
存储单元，其用于以n*m像素的区域做压缩，存储每个区域的中心像素对应的mura补偿值，其中，至少一个区域的中心像素的mura补偿值为相应区域的平均mura补偿值，所述n、m为大于或等于2的整数；
处理单元，其用于根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值。
其中，每个区域的中心像素对应的mura补偿值为相应区域的平均mura补偿值。
其中，所述处理单元具体包括：
判断单元，其用于判断所述其他像素是否位于显示面板最外侧中心像素所在的行或列之外的位置；
处理子单元，其用于当判断单元的判断结果为是时，则将该其他像素位于的区域的中心像素对应的mura补偿值作为该其他像素对应的mura补偿值；其用于当判断单元的判断结果为否时，则根据该其他像素位于的区域的中心像素对应的mura补偿值和相邻区域中心像素对应的mura补偿值线性插值计算获得所述其他像素对应的mura补偿值。
实施本发明实施例，具有如下有益效果：
由于显示面板存储的mura补偿值相对现有技术得到了减少，从而，显示面板的存储空间可以得到减少，从而可以降低成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述 中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术显示面板像素的排列图(显示面板存储图中圆圈圈住的像素对应的mura补偿值)；
图2是本发明一实施显示面板的mura现象补偿方法的流程图；
图3是本发明一实施例显示面板像素的排列图(显示面板存储图中圆圈圈住的像素对应的mura补偿值)；
图4是本发明另一实施例示面板的mura现象补偿方法的流程图；
图5是本发明另一实施例其中一行/列像素的mura补偿线(实线表示)、现有技术其中一行/列mura补偿线(点划线表示)与显示面板其中一行/列像素实际需要的mura补偿线(虚线表示)的比较图；
图6是本发明又一实施例示面板的mura现象补偿方法的流程图；
图7是本发明一实施例显示面板的组成示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本申请说明书、权利要求书和附图中出现的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，术语“第一”、“第二”和“第三”等是用于区别不同的对象，而并非用于描述特定的顺序。
本发明实施例提供了一种显示面板的mura现象补偿方法，所述显示面板可以为液晶显示面板或者其他显示面板，在以下的描述中以所述显示面板为UHD(Ultra High Definition，超高清)显示面板为例进行说明，也即所述显示面板的分辨率达到了3840*2160(以下描述以分辨率3840*2160为例进行描 述)，当然，在本发明的其他实施例中，所述显示面板的分辨率不限于上述分辨率，还可以为1920*1080的分辨率或者其他分辨率。请参见图2和图3，所述方法包括如下步骤：
S110,以n*m像素的区域间隔做压缩，存储每个区域的中心像素对应的mura补偿值，其中，至少一个区域的所述中心像素的mura补偿值为相应区域的平均mura补偿值，所述n、m为大于或等于2的整数；
在本实施例中，n＝m，且n和m均为8，当然，在本发明的其他实施例中，所述n和m也可以不相等，所述n和m也可以为大于或等于2的其他整数。
在本实施中，所述显示面板以8*8像素的区域间隔做压缩形成480(3840/8＝480)*270(2160/8＝270)个区域，请参见图3，在图3中虚线框就为一个区域，显示面板存储每个区域中心像素对应的mura补偿值(图3中中心像素用圆圈圈起来)，由于只有480*270个区域，从而显示面板只需要存储480*270个mura补偿值。请继续参见图3，以显示面板最左上角的一个区域为例进行说明，此区域由第1列像素C1-第8列像素C8和第1行像素R1-第8行像素R8围成，该区域的中心像素可以为第4行像素R4与第4列像素C4交叉处的像素，也可以为第4行像素R4与第5列像素C5交叉处的像素，也可以为第5行像素R5与第4列像素C4交叉处的像素，也可以为第5行像素R5与第5列像素C5交叉处的像素，在本实施例中第4行像素R4与第4列像素C4交叉处的像素为中心像素(图3中用圆圈圈起来了)，显示面板其他区域中心像素的设置也参照该区域的中心像素位置。当然，在本发明的其他实施例中，当区域中存在最中心的像素时，所述中心像素为最中心的像素。
在本实施例中，在形成的480*270个区域中，至少一个区域所述中心像素对应的mura补偿值为相应区域的平均mura补偿值，例如所述中心像素的mura补偿值为该区域所有像素的mura补偿值之和除以64。在本实施例中，每个区域的中心像素的mura补偿值均为相应区域的平均mura补偿值，该平均mura补偿值是通过外置mura修补系统获得的，然后对应存储到显示面板内。当然，在本发明的其他实施例中，所述中心像素的mura补偿值有些还可以是该像素的实际mura补偿值，而不是相应区域的平均mura补偿值。
S120，根据存储的mura补偿值获得同区域除中心像素之外的其他像素对 应的mura补偿值。
在本实施例，显示面板被压缩的同一个区域的像素包括中心像素和其他像素。根据存储的480*270个mura补偿值，可以获得其他像素对应的mura补偿值，例如通过线性插值计算方法获得其他像素对应的mura补偿值，或者将某些特殊位置的其他像素对应的mura补偿值直接赋予该区域中心像素对应的mura补偿值，此时，该区域中心像素的mura补偿值为相应区域的平均mura补偿值。
由于显示面板存储的mura补偿值相对现有技术得到了减少，具体在本实施例中存储的mura补偿值为480*270个，而现有技术需要存储481*271个，从而，显示面板的存储空间可以得到减少，从而可以降低成本。
请参见图4，可选的，步骤S120、根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值的步骤具体包括：
S121:判断所述其他像素是否位于显示面板最外侧所述中心像素所在的行或列之外的位置，若是，则执行步骤S122，若否，则执行步骤S123。
在本实施例中，显示面板为方形，显示面板的最外侧包括左外侧、右外侧、上外侧、下外侧，显示面板最外侧所述中心像素所在的行或者列在左外侧为第4列，在右外侧为第3836列，在上外侧为第4行，在下外侧为第2156行，判断所述其他像素是否位于显示面板最外侧所述中心像素所在的行或列之外的区域，也即判断所述其他像素是否位于显示面板第4列像素、第3846列像素、第4行像素、第2156行像素围城的区域之外的位置，也即判断所述其他像素是否位于显示面板的第1列像素-第3列像素内、第3837列像素-3840列像素内、第1行像素-第3行像素内或第2157行像素-2160行像素内。
S122：将该其他像素位于的区域的中心像素对应的mura补偿值作为该其他像素对应的mura补偿值。
在本实施例中，如果该其他像素是位于显示面板的第1列像素-第3列像素内、第3837列像素-3840列像素内、第1行像素-第3行像素内或第2157行像素-2160行像素内，例如该其他像素的坐标为(1,1)(代表第一列像素与第一行像素交叉处的像素，也即最左上角的像素)、(1，2160)(代表列坐标，行 坐标)、(3840,1)、(3840,2160)、(3,4)、(4,3)等，则将该其他像素位于的区域的中心像素对应的mura补偿值作为该其他像素对应的mura补偿值，例如，该其他像素的坐标为(1,1)，则将最左上角的区域的中心像素对应的mura补偿值赋予该(1,1)坐标像素对应的mura补偿值，也即将坐标为(4,4)的中心像素对应的mura补偿值赋予坐标为(1,1)像素对应的mura补偿值。
在本实施例中，由于中心像素对应的mura补偿值为相应区域的平均mura补偿值，从而，将该mura补偿值作为该其他像素对应的补偿值，不会造成明暗不均，而不会像现有技术(请参见图1)那样第3834～3840列像素、第2154～2160行像素的mura补偿数据获得需要用到对应第3841列、第2161行像素(圆圈圈出来的像素)的mura补偿数据，由于第3841列、第2161行像素(圆圈圈出来的像素)的mura补偿数据本身并不准确(本身该些像素为虚像素，是经过计算获得的)，导致第3834～3840列、第2154～2160行处的其他像素计算出的mura补偿数据更加不准确，造成明暗不均的问题。请参照图5，本实施例的mura补偿效果较好，比较接近实际需要的mura补偿值，可以提升显示面板的画面效果，而且，由于对显示面板最外侧所述中心像素所在的行或列之外的其他像素进行此种方式处理，显示面板不用像现有技术一样多存储一些补偿数据。另外，在本发明的其他实施例中，所述显示面板还可以经过其他处理，同样可以不用像现有技术一样多存储一些补偿数据，例如通过边框盖住该些其他像素。另外，现有技术由于模组组装后四周容易漏光，也会影响第1行和第1列像素mura补偿数据的计算准确性，而在本实施例中，由于显示面板边缘位置像素的补偿值都是直接赋予相应区域的平均mura补偿值，从而在边缘明暗也比较均匀。
S123：根据该其他像素位于的区域的中心像素对应的mura补偿值和相邻区域中心像素对应的mura补偿值线性插值计算获得所述其他像素对应的mura补偿值。
在本实施例中，若该其他像素不是位于显示面板的第1列像素-第3列像素内、第3857列像素-3860列像素内、第1行像素-第3行像素内和第2157行像素-2160行像素内，也即该其他像素是位于显示面板第4列像素-第3856列像素、第4行像素-第2156行像素围成的区域内，则根据该其他像素位于的区 域的中心像素对应的mura补偿值和相邻区域中心像素对应的mura补偿值线性插值计算获得所述其他像素对应的mura补偿值。
请继续参见图3，以下以图示中e像素、g像素、f像素为例计算其对应的mura补偿值E、G、F，mura补偿值E、G、F分别如下：
E＝[(8-Y)*A+Y*C]/8；
F＝[(8-Y)*B+Y*D]/8；
G＝[(8-X)*E+X*F]/8。
其中，X、Y分别为相应像素相对中心像素(4,4)的行数目、列数目。
同样，依据线性插值计算可以获得不是位于显示面板的第1列像素-第3列像素、第3857列像素-3860列像素、第1行像素-第3行像素和第2157行像素-2160行像素的其他像素对应的mura补偿值，从而可以获得整个显示面板内像素对应的mura补偿值。
另外，在本发明的其他实施例中，当显示面板的分辨率不能整除n或m时，显示面板的边缘会形成多数个特殊区，所述特殊区包含的像素为n*a或者b*m，其中，a小于m且a为正整数，b小于n且b为正整数，为了对该些区域进行mura补偿，请参见图6，所述显示面板的mura现象补偿方法除了包括步骤S110、S120还包括：
S130:存储特殊区的中心像素对应的mura补偿值，其中，该中心像素对应的mura补偿值为相应特殊区的平均mura补偿值；
举例说来，当该特殊区包含的像素为8*5时，所述中心像素的坐标可以为(4，3)或者(5,3)，也即为第4列像素与第3行像素交叉的像素或者第5列像素与第3行像素交叉的像素，所述平均mura补偿值为相应特殊区所有像素对应的mura补偿值的和除以40。
S140:根据存储的特殊区的mura补偿值计算获得特殊区除中心像素之外的其他像素对应的mura补偿值。
计算特殊区其他像素对应的mura补偿值可以参考S122和S123处理，在此就不再赘述。
另外，本发明实施例还提供一种显示面板，请参见图7，所述显示面板包 括：
存储单元110，其用于以n*m像素的区域做压缩，存储每个区域中心像素对应的mura补偿值，其中，至少一个区域的中心像素的mura补偿值为相应区域的平均mura补偿值，所述n、m为大于或等于2的整数；
在本实施例中，所述存储单元110为数据存储器(flash)，但本发明不限于此，在本发明的其他实施例中，所述存储单元还可以为时序控制器(TconIC)。在本实施例中，每个区域中心像素的mura补偿值为相应区域的平均mura补偿值。
处理单元120，其用于根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值。
在本实施例中，所述处理单元120为时序控制器(Tcon IC)。
另外，在本实施例中，所述处理单元具体包括：
判断单元121，其用于判断所述其他像素是否位于显示面板最外侧中心像素所在的行或列之外的位置；
处理子单元122，其用于当判断单元121的判断结果为是时，则将该其他像素位于的区域的中心像素对应的mura补偿值作为该其他像素对应的mura补偿值；其用于当判断单元121的判断结果为否时，则根据该其他像素位于的区域的中心像素对应的mura补偿值和相邻区域中心像素对应的mura补偿值线性插值计算获得所述其他像素对应的mura补偿值。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于装置实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
通过上述实施例的描述，本发明具有以下优点：
由于显示面板存储的mura补偿值相对现有技术得到了减少，从而，显示面板的存储空间可以得到减少，从而可以降低成本。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之 权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (10)

  1. 一种显示面板的mura现象补偿方法，其中，包括
    以n*m像素的区域间隔做压缩，存储每个区域的中心像素对应的mura补偿值，其中，至少一个区域的中心像素的mura补偿值为相应区域的平均mura补偿值，所述n、m为大于或等于2的整数；
    根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值。
  2. 如权利要求1所述的显示面板的mura现象补偿方法，其中，每个区域的中心像素对应的mura补偿值为相应区域的平均mura补偿值。
  3. 如权利要求2所述的显示面板的mura现象补偿方法，其中，根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值的步骤具体包括：
    判断所述其他像素是否位于显示面板最外侧中心像素所在的行或列之外的位置；
    若是，则将该其他像素位于的区域的中心像素对应的mura补偿值作为该其他像素对应的mura补偿值。
  4. 如权利要求3所述的显示面板的mura现象补偿方法，其中，还包括步骤：
    若否，则根据该其他像素位于的区域的中心像素对应的mura补偿值和相邻区域中心像素对应的mura补偿值线性插值计算获得所述其他像素对应的mura补偿值。
  5. 如权利要求1所述的显示面板的mura现象补偿方法，其中，所述n＝m。
  6. 如权利要求1所述的显示面板的mura现象补偿方法，其中，所述显示 面板的边缘形成多数个特殊区，所述特殊区包含的像素为n*a或b*m，其中，a小于m且a为正整数，b小于n且b为正整数，所述方法还包括：
    存储特殊区的中心像素对应的mura补偿值，其中，该中心像素对应的mura补偿值为相应特殊区的平均mura补偿值；
    根据存储的特殊区的mura补偿值计算获得特殊区除中心像素之外的其他像素对应的mura补偿值。
  7. 如权利要求1所述的显示面板的mura现象补偿方法，其中，所述显示面板的分辨率为3840*2160，n＝m＝8，所述显示面板形成480*270个单独的区域。
  8. 一种显示面板，其中，包括：
    存储单元，其用于以n*m像素的区域做压缩，存储每个区域的中心像素对应的mura补偿值，其中，至少一个区域的中心像素的mura补偿值为相应区域的平均mura补偿值，所述n、m为大于或等于2的整数；
    处理单元，其用于根据存储的mura补偿值获得同区域除中心像素之外的其他像素对应的mura补偿值。
  9. 如权利要求8所述的显示面板，其中，每个区域的中心像素对应的mura补偿值为相应区域的平均mura补偿值。
  10. 如权利要求8所述的显示面板的mura现象补偿方法，其中，所述处理单元具体包括：
    判断单元，其用于判断所述其他像素是否位于显示面板最外侧中心像素所在的行或列之外的位置；
    处理子单元，其用于当判断单元的判断结果为是时，则将该其他像素位于的区域的中心像素对应的mura补偿值作为该其他像素对应的mura补偿值；其用于当判断单元的判断结果为否时，则根据该其他像素位于的区域的中心像素对应的mura补偿值和相邻区域中心像素对应的mura补偿值线性插值计算获得 所述其他像素对应的mura补偿值。
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