WO2018201534A1 - 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
WO2018201534A1
WO2018201534A1 PCT/CN2017/085758 CN2017085758W WO2018201534A1 WO 2018201534 A1 WO2018201534 A1 WO 2018201534A1 CN 2017085758 W CN2017085758 W CN 2017085758W WO 2018201534 A1 WO2018201534 A1 WO 2018201534A1
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Prior art keywords
compensation value
display panel
compensation
gray level
gray
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PCT/CN2017/085758
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English (en)
French (fr)
Inventor
张华�
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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 EP17908686.3A priority Critical patent/EP3640932A4/en
Priority to US15/552,289 priority patent/US10276111B2/en
Priority to KR1020197034741A priority patent/KR20190141735A/ko
Priority to JP2019558456A priority patent/JP2020518849A/ja
Publication of WO2018201534A1 publication Critical patent/WO2018201534A1/zh
Anticipated expiration legal-status Critical
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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
    • G09G3/20—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
    • G09G3/2007—Display of intermediate tones
    • 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
    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • 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. CN201710305909.1, 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, the high-resolution camera captures the mura form of some gray scales in the 0-255 gray scale, and these gray scales are generally low.
  • a grayscale mura form is selected for each of the grayscale region, the middle grayscale region, and the high grayscale region.
  • the gray level value of the mura position (the area brighter than the center position, lowering the gray scale value to reduce the brightness; the darker area than the center position, increasing the gray scale value to increase the brightness), and the compensation values of the remaining gray levels pass
  • the compensated values of the low, medium and high gray scales are linearly interpolated to achieve a uniform brightness of the display panel as a whole.
  • the existing linear interpolation calculation method is relatively accurate for low-medium, medium-high gray-scale compensation values, and the calculation method for the compensation value between 0 gray-scale-measured low gray-scale is: default 0 gray scale (most The compensation value of the dark is 0, and then the linear interpolation calculation is performed by the compensation value of 0 gray scale and the compensation value measured by the low gray scale to obtain other low gray scale compensation values.
  • default 0 gray scale most The compensation value of the dark is 0, and then the linear interpolation calculation is performed by the compensation value of 0 gray scale and the compensation value measured by the low gray scale to obtain other low gray scale compensation values.
  • a, b, and c represent the measured minimum gray scale g min , intermediate gray scale g mid , and the highest gray scale g max compensation value
  • g min is the phase between the relative gray scale g mid and the highest gray scale g max .
  • the mura degree of each gray scale is serious, but the compensation value of 0 gray scale is set to 0 (default value, inaccurate value)
  • the calculated compensation data of the lowest gray scale g min ⁇ 0 gray scale is smaller and smaller, and the actual gray scale compensation value is larger and larger. (See Figure 1), the severe mura compensation for the lowest gray scale g min ⁇ 0 gray scale measured is not good.
  • 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.
  • the problem of uneven brightness of the screen of the liquid crystal display panel can be alleviated.
  • a mura phenomenon compensation method for a display panel including:
  • the first target compensation value y k corresponding to the current gray level kth gray level between the 0 gray scale and the lowest gray scale g min is calculated as:
  • the head end compensation coefficient x is stored in the timing controller or stored in the data memory.
  • the compensation value corresponding to the highest gray level g max of the different gray levels is the third compensation value c, and the method further includes:
  • the linear interpolation calculation is performed according to the end compensation value n and the third compensation value c to obtain the current gray level corresponding to the first Two target compensation value;
  • n yc, where y is the end compensation coefficient, 0 ⁇ y ⁇ 1.
  • the different gray scales further include an intermediate gray scale g mid and a highest gray scale g max , wherein the intermediate gray scale g mid is located between the lowest gray scale g min and the highest gray scale g max , the intermediate gray The second compensation value corresponding to the order g mid is b, and the highest gray level g max corresponds to the third compensation value c.
  • the method further includes:
  • the linear interpolation calculation is performed according to the first compensation value a and the second compensation value b to obtain the current gray level Corresponding third target compensation value, and compensating the current gray level of the display panel according to the third target compensation value;
  • the linear interpolation calculation is performed according to the second compensation value b and the third compensation value c to obtain the current gray level corresponding And a fourth target compensation value, and compensating the current gray level of the display panel according to the fourth target compensation value.
  • a second aspect of the present invention provides a display panel, including:
  • a first storage unit configured to store a plurality of compensation values for gray scale compensation of the mura phenomenon by the display panel, where the plurality of compensation values are compensated according to different gray levels of the display panel, wherein the lowest gray level g min of different gray levels Corresponding said compensation value is a first compensation value a;
  • a first acquiring unit configured to acquire a head end compensation value m corresponding to a gray scale of 0, where m is not 0;
  • a second acquiring unit configured to acquire a current gray level of the display panel
  • a processing unit configured to: if the current gray level of the display panel acquired by the second obtaining unit is between the 0 gray scale and the lowest gray level g min , according to the first compensation value a and the first end compensation The value m is linearly interpolated to obtain a first target compensation value corresponding to the current gray level;
  • a compensation unit configured to compensate the current gray level of the display panel according to the first target compensation value.
  • the display panel further includes a second storage unit for storing the head end compensation coefficient x.
  • the first storage unit is a data storage
  • the second storage unit is a data storage. Or timing controller.
  • the head end compensation value corresponding to the 0 gray scale is not set to 0, but is close to the actual value or is the head end compensation value m of the actual value, thereby obtaining 0 gray scale - the lowest gray scale g min between the linear interpolation calculations
  • the first target compensation value is closer to the actual compensation value, so that the mura compensation effect between the gray levels of the lowest gray level g min -0 is better, so that the display effect is better.
  • FIG. 1 is a comparison diagram of a mura compensation curve (solid curve) actually obtained in the prior art and a mura compensation curve (solid line) obtained by a prior art linear interpolation calculation;
  • FIG. 2 is a flow chart of a first embodiment of a mura phenomenon compensation method of a display panel of the present invention
  • FIG. 3 is a comparison diagram of obtaining a mura compensation curve (solid line), a mura compensation curve (dashed line) obtained by a prior art linear interpolation calculation, and an actual required mura compensation curve (solid curve) according to the first embodiment of the present invention
  • FIG. 4 is a schematic view showing the functional structure of a display panel of the present invention.
  • Fig. 5 is a flow chart showing a second embodiment of the mura phenomenon compensation method of the display panel of the present invention.
  • the present invention provides a mura phenomenon compensation method for a display panel.
  • the display panel can be a liquid crystal display panel or other display panel. Referring to FIG. 2 and FIG. 3, the method includes the following steps:
  • the display panel stores a plurality of compensation values for performing gray scale compensation on the mura phenomenon, and the plurality of compensation values respectively compensate for different gray levels.
  • the plurality of compensation values are at least three compensation values, and more At least three of the compensation values respectively correspond to a low gray level, a medium gray level, and a high gray level.
  • the plurality of compensation values are three compensation values, respectively being the first compensation.
  • the value a, the second compensation value b, the third compensation value c, the first compensation value a of the three compensation values a, b, c corresponds to a gray level (lowest gray level g min ) in the low gray level to compensate,
  • the second compensation value b is compensated for one gray scale (middle gray scale g mid ) of the middle gray scale, and the third compensation value c is compensated for one gray scale (highest gray scale g max ) of the high gray scale.
  • a first compensation value to compensate for different lowest gray gray value g min corresponding to a e.g., a first compensation value corresponding to the lowest gray level g min A 25 is gray
  • the maximum gray level g max The corresponding compensation value is the third compensation value c.
  • the highest gray level g max corresponding to the third compensation value c is 200 gray scale.
  • the gray scales corresponding to the other stored compensation values are located between the lowest gray level g min and the highest gray level g max , for example between 25 gray scale and 200 gray scale.
  • the display panel obtains the head end compensation value m corresponding to the gray scale of 0, and the head end compensation value m can be obtained through calculation or through Actually measured by the experiment, the head end compensation value m may be an actual compensation value, or may be close to the actual compensation value, and the head end compensation value m is not 0. In this embodiment, the head end compensation value may be the same for different display panels, or different display panels may have different head end compensation values.
  • the linear interpolation calculation is performed according to the first compensation value a and the first end compensation value m to obtain the first target compensation value corresponding to the current gray scale.
  • the first target compensation value y k corresponding to the current gray level may be linear according to the following Interpolation calculations get:
  • the first target compensation value between the 0 gray scale-lowest gray scale g min obtained by the calculation in this embodiment is closer to the actual required compensation value than the prior art.
  • S150 Compensating the current gray level of the display panel according to the first target compensation value.
  • the current gray level of the display panel is compensated according to the first target compensation value.
  • the head end compensation value corresponding to the 0 gray scale is not set to 0, but is close to the actual value or is the head end compensation value m of the actual value, thereby obtaining 0 gray scale-lowest by linear interpolation calculation.
  • the first target compensation value between the gray levels g min is closer to the actual compensation value, so that the mura compensation effect between the gray levels of the lowest gray level g min -0 is better, so that the display effect is better.
  • the head end compensation value m xa, where x is the head end compensation coefficient, 0 ⁇ x ⁇ 1, and thus, the first target compensation value y k corresponding to the kth gray level is calculated as follows:
  • the step of obtaining the head end compensation value corresponding to the 0 gray scale further includes the steps of:
  • the head end compensation value can be calculated based on the head end compensation coefficient x.
  • the value of the head end compensation coefficient x is obtained by the external mura system, and the external mura system increases the shooting of a low gray level j (the jth gray level is between the 0 gray scale and the lowest gray scale g min , preferably The jth gray scale is located between the 10th gray scale and the lowest gray scale g min , and the gray scale cannot be too low, because the camera has a certain limit of the mura form, and the compensation data p corresponding to the jth gray scale is obtained, according to the jth
  • the magnitude relationship between the compensation data p corresponding to the gray scale and the first compensation value a is calculated and stored in the first end compensation coefficient x, and the compensation data p corresponding to the jth gray scale is not stored in the flash, and is calculated by the following formula The value of the coefficient x.
  • the head end compensation coefficient x by storing the head end compensation coefficient x, since the head end compensation coefficient x is small, the storage space can be saved.
  • the head end compensation value m can also be directly stored.
  • the head end compensation coefficient x can be stored in a timing controller (Tcon IC), and a fixed parameter x is selected in the product debugging phase to be set inside the timing controller (Tcon IC).
  • the head end compensation coefficient x may also be stored in a data memory, so that different head end compensation coefficient x values may be selected according to the actual condition of each piece of the display panel.
  • a plurality of said compensation values for performing gray scale compensation on the mura phenomenon are stored in the data memory.
  • the compensation value of one of the gray levels in the low gray level (here, the gray level is called the lowest gray level g min ) is the first compensation value a
  • one of the gray levels in the middle gray level (here)
  • the compensation value of the gray scale called the intermediate gray scale g mid ) is the second compensation value b
  • the compensation value of one of the gray scales (here, the gray scale is called the highest gray scale g max ) is the third compensation.
  • a value c such that if the current grayscale kth grayscale of the display panel is between the lowest grayscale gmin -intermediate grayscale gmid , linear interpolation calculation is performed according to the first compensation value a and the second compensation value b to obtain the current a third target compensation value y k corresponding to the gray level of the gray level, and compensating the current gray level of the display panel according to the third target compensation value, and the third target compensation value y k is specifically calculated as:
  • y k a + (kg min ) * (ba) / (g mid - g min ).
  • the second compensation value b may not exist, and the compensation value between the lowest gray level g min - the highest gray level g max may also be obtained according to the linear interpolation settlement.
  • the invention also provides a display panel, please refer to FIG. 4, comprising:
  • the first storage unit 110 is configured to store a plurality of compensation values for gray scale compensation of the mura phenomenon by the display panel, and the plurality of compensation values are compensated according to different gray levels of the display panel, wherein the lowest gray level g of different gray levels
  • the compensation value corresponding to min is the first compensation value a;
  • the first obtaining unit 120 is configured to obtain a head end compensation value m corresponding to the gray scale of 0, where m is not 0;
  • the second obtaining unit 130 is configured to acquire a current gray level of the display panel.
  • the processing unit 140 is configured to perform linear interpolation calculation according to the first compensation value a and the head end compensation value m if the current gray level of the display panel acquired by the second obtaining unit 130 is between 0 gray scale and lowest gray scale g min Obtain a first target compensation value corresponding to the current gray level.
  • the processing unit 140 performs linear interpolation calculation according to the first compensation value a and the head end compensation value m to obtain the current gray scale corresponding a first target compensation value, specifically, assuming that the current gray level is the kth gray level, and the kth gray level is between the 0 gray level and the lowest gray level g min , the first target compensation value corresponding to the current gray level y k can be obtained from the following linear interpolation calculations:
  • the compensation unit 150 is configured to compensate the current gray level of the display panel according to the first target compensation value.
  • the first obtaining unit 120, the second obtaining unit 130, the processing unit 140, and the compensation unit 150 may all be integrated in a timing controller (Tcon IC), or may be separate electronic components.
  • Tcon IC timing controller
  • the end compensation coefficient x in this embodiment, the first storage unit and the second storage unit may be the same memory, or may be separate memories.
  • the first storage unit is a data memory (flash)
  • the second storage unit is a bit data memory (flash) or a timing controller (Tcon IC).
  • the compensation value of one of the gray levels in the low gray level (here, the gray level is called the lowest gray level g min ) is the first compensation value a
  • one of the middle gray levels (here The compensation value of the gray scale called the intermediate gray scale g mid ) is the second compensation value b
  • the compensation value of one of the gray scales (where the gray scale is called the highest gray scale g max ) is the third compensation value.
  • the processing unit 140 performs according to the first compensation value a and the second compensation value b.
  • the linear interpolation calculation obtains the third target compensation value y k corresponding to the kth gray level of the current gray level, and the specific calculation formula is:
  • the compensation unit 150 compensates the current gray level of the display panel according to the third target compensation value.
  • the processing unit 140 performs the linear interpolation according to a second compensation value b and the third compensation value c Obtain a fourth target compensation value y k corresponding to the gray scale of the current gray level, and the specific calculation formula is:
  • the compensation unit 150 compensates the current gray level of the display panel according to the fourth target compensation value.
  • the second compensation value b may not exist, and the compensation value processing unit 140 between the lowest gray level g min - the highest gray level g max may also be obtained according to the linear interpolation settlement.
  • the compensation value of the 255 gray scale is set to 0 (default value, inaccurate value)
  • the compensation value of the gray scale of the highest gray scale g max -255 is obtained according to the linear interpolation calculation, generally speaking,
  • the highest gray scale g max -255 gray scale panel has few mura problems, but in order to further improve the display quality of the display panel, the second embodiment is described below for further improving the display quality of the display.
  • FIG. 5 is a flowchart of a second embodiment of a mura phenomenon compensation method for a display panel according to the present invention.
  • the method flow of FIG. 5 is similar to the method flow of FIG. 2, and the main difference between this embodiment and the first embodiment is that the highest is improved.
  • the embodiment includes steps S210-S250.
  • the storage display panel performs a plurality of compensation values for performing gray scale compensation on the mura phenomenon, and the plurality of compensation values are compensated according to different gray levels of the display panel, wherein the compensation value corresponding to the lowest gray level g min of different gray levels is a first compensation value a, the compensation value corresponding to the highest gray level g max of different gray levels is a third compensation value c;
  • the compensation value corresponding to the lowest gray level g min in different gray levels is the first compensation value a
  • the compensation value corresponding to the highest gray level g max in different gray levels is the third compensation value c
  • the different gray levels include the lowest gray level g min and the highest gray level g max
  • the stored plurality of compensation values include the first compensation value a and the third compensation value c.
  • This step is the same as S120, and will not be described here.
  • the display panel obtains the end compensation value n corresponding to the gray level of 255, and the n is not 0, and the end compensation value n can be calculated. Obtained, can also be actually measured by experiments, the end compensation value n can be the actual compensation value, or can be close to the actual compensation value.
  • the end compensation values may be the same for different display panels, or different display panels may have different head end compensation values.
  • This step is the same as S130, and will not be described here.
  • the display panel if the current k-th gray gray gray gray at 0 - time between the lowermost gray g min, linear interpolation is performed according to a first compensation value and the compensation value m headend Obtain the first target compensation value y k corresponding to the current gray level kth gray scale, and the calculation formula is as follows:
  • the linear interpolation calculation is performed according to the end compensation value n and the third compensation value c to obtain the second target compensation value corresponding to the current gray level, specifically For example, assuming that the current gray level is the kth gray level, and the kth gray level is between the 255th gray level and the highest gray level g max , the second target compensation value y k corresponding to the current gray level kth gray level It can be calculated according to the following formula:
  • Y 240 n + (255 - 240 ) * (cn) / (255 - 200).
  • the current gray level of the display panel is compensated according to the first target compensation value or the second target compensation value.
  • the 255 gray scale-highest gray scale is obtained by linear interpolation calculation.
  • the second target compensation value between g max is closer to the actual compensation value, so that the mura compensation effect between the gray scales of the highest gray scale g max -255 is better, and the display effect is further improved.
  • the first embodiment does not set the head end compensation value to 0, but sets the actual value or the value close to the actual value, and does not set the end compensation value to 0, but sets it to
  • the actual value is close to the actual value n, so that when the current gray level is at the 0 gray scale-lowest gray level g min , the first target compensation value corresponding to the current gray scale obtained by the calculation is closer to the actual compensation value, so that the mura compensation effect is better. Therefore, when the current gray level is at 255 gray scale-highest gray scale g max , the second target compensation value corresponding to the current gray scale obtained by the calculation is closer to the actual compensation value, so that the mura compensation effect is better, and the overall mura compensation effect is better.
  • the display effect is further improved.
  • the end compensation value n yc, where y is the end compensation coefficient, 0 ⁇ y ⁇ 1, and the end compensation coefficient y can be obtained as the head end compensation coefficient x, and the end compensation coefficient can be Stored in a timing controller (Tcon IC) or in a data memory (flash).
  • Tcon IC timing controller
  • flash data memory
  • the present invention has the following advantages:
  • the head end compensation value corresponding to the 0 gray scale is not set to 0, but is close to the actual value or is the head end compensation value m of the actual value, thereby obtaining 0 gray scale - the lowest gray scale g min between the linear interpolation calculations
  • the first target compensation value is closer to the actual compensation value, so that the mura compensation effect between the gray levels of the lowest gray level g min -0 is better, so that the display effect is better.

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Abstract

一种显示面板的mura现象补偿方法，包括：（S110），存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶g min对应的补偿值为第一补偿值a；（S120），获取0灰阶对应的首端补偿值m，其中，m不为0；（S130），获取显示面板的当前灰阶；（S140），若显示面板的当前灰阶处于0灰阶-最低灰阶g min之间时，则根据第一补偿值a和首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值；（S150），根据第一目标补偿值对显示面板的当前灰阶进行补偿。一种显示面板，具有可减轻液晶显示面板画面亮度不均的优点。

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CN201710305909.1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：高分辨率相机拍摄出0-255灰阶中某几个灰阶的mura形态，这几个灰阶一般从低灰阶区域、中灰阶区域、高灰阶区域各选出一个灰阶的mura形态进行拍摄，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位置的灰阶值(比中心位置亮的区域，降低灰阶值，以降低亮度；比中心位置暗的区域，提高灰阶值，以提高亮度)，其余各灰阶的补偿值，则通过所拍摄的低、中、高灰阶的补偿值进行线性插值计算得出，以使显示面板整体达到比较一致的亮度。
现有的线性插值计算方法低-中、中-高的灰阶补偿值是比较准确的，0灰阶-测出的低灰阶之间的补偿值的计算方法为：默认0灰阶(最暗)的补偿值为0，然后通过0灰阶的补偿值0、低灰阶测出的补偿值进行线性插值计算得出其他低灰阶的补偿值，然而，请参见图1(在此图中a、b、c分别代表测出的最低灰阶gmin、中间灰阶gmid、最高灰阶gmax的补偿值)，对于0灰阶-测出的最低灰阶gmin(最低灰阶gmin是相对中间灰阶gmid、最高灰阶gmax)之间的阶段，各灰阶的mura程度都比较严重，但是由于0灰阶的补偿值设定为0(默 认值，非准确值)，由补偿数据a和0进行线性插值计算后，计算得出的测出的最低灰阶gmin～0灰阶的补偿数据越来越小，与实际的灰阶补偿值相差越来越大(请参见图1)，对测出的最低灰阶gmin～0灰阶的严重mura补偿效果不佳。
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。可减轻液晶显示面板画面亮度不均的问题。
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：
存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶gmin对应的所述补偿值为第一补偿值a；
获取0灰阶对应的首端补偿值m，其中，m不为0；
获取显示面板的当前灰阶；
若显示面板的当前灰阶处于所述0灰阶-所述最低灰阶gmin之间，则根据所述第一补偿值a和所述首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值；
根据所述第一目标补偿值对所述显示面板的当前灰阶进行补偿。
其中，m＝xa，其中所述x是首端补偿系数，0＜x＜1。
其中，位于0灰阶-最低灰阶gmin之间的当前灰阶第k灰阶对应的第一目标补偿值yk计算公式为：
yk＝m+(k-0)*(a-m)/(gmin-0)。
其中，所述首端补偿系数x存储在时序控制器中或者存储在数据存储器中。
其中，不同灰阶中最高灰阶gmax对应的所述补偿值为第三补偿值c，所述方法还包括：
获取255灰阶对应的末端补偿值n，其中，所述n不为0；
若显示面板的当前灰阶处于所述最高灰阶gmax-所述255灰阶之间时，则根据所述末端补偿值n和第三补偿值c进行线性插值计算获得当前灰阶对应的 第二目标补偿值；
根据所述第二目标补偿值对所述显示面板的当前灰阶进行补偿。
其中，n＝yc，其中所述y是末端补偿系数，0＜y＜1。
其中，不同灰阶中还包括中间灰阶gmid和最高灰阶gmax，所述中间灰阶gmid位于所述最低灰阶gmin和所述最高灰阶gmax之间，所述中间灰阶gmid对应的第二补偿值为b，所述最高灰阶gmax对应第三补偿值c，所述方法还包括：
若显示面板的当前灰阶处于所述最低灰阶gmin-所述中间灰阶gmid之间时，则根据所述第一补偿值a和第二补偿值b进行线性插值计算获得当前灰阶对应的第三目标补偿值，并根据所述第三目标补偿值对所述显示面板的当前灰阶进行补偿；或者，
若显示面板的当前灰阶处于所述中间灰阶gmid-所述最高灰阶gmax之间时，则根据第二补偿值b和第三补偿值c进行线性插值计算获得当前灰阶对应的第四目标补偿值，并根据所述第四目标补偿值对所述显示面板的当前灰阶进行补偿。
本发明第二方面提供了一种显示面板，包括：
第一存储单元，用于存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶gmin对应的所述补偿值为第一补偿值a；
第一获取单元，用于获取0灰阶对应的首端补偿值m，其中，m不为0；
第二获取单元，用于获取显示面板的当前灰阶；
处理单元，用于若第二获取单元获取显示面板的当前灰阶处于所述0灰阶-所述最低灰阶gmin之间时，则根据所述第一补偿值a和所述首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值；
补偿单元，用于根据所述第一目标补偿值对所述显示面板的当前灰阶进行补偿。
其中，m＝xa，其中x是首端补偿系数，0＜x＜1，所述显示面板还包括第二存储单元，用于存储所述首端补偿系数x。
其中，所述第一存储单元为数据存储器，所述第二存储单元为数据存储器 或者时序控制器。
实施本发明实施例，具有如下有益效果：
由于0灰阶对应的首端补偿值不是设定为0，而是接近实际值或者就为实际值的首端补偿值m，从而通过线性插值计算获得0灰阶-最低灰阶gmin之间的第一目标补偿值比较接近实际补偿值，从而最低灰阶gmin-0灰阶之间mura补偿效果较好，从而显示效果较佳。
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是现有技术实际所需mura补偿曲线(实曲线)和现有技术线性插值计算获得mura补偿曲线(实线)对比图；
图2是本发明显示面板的mura现象补偿方法的第一实施例流程图；
图3是本发明第一实施例获得mura补偿曲线(实直线)、现有技术线性插值计算获得的mura补偿曲线(虚线)、实际所需mura补偿曲线(实曲线)的对比图；
图4是本发明显示面板的功能结构示意图；
图5是本发明显示面板的mura现象补偿方法的第二实施例流程图。
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。
第一实施例
本发明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，请参见图2和图3，所述方法包括如下步骤：
S110，存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶gmin对应的补偿值为第一补偿值a；
其中，显示面板存储对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值分别对应不同灰阶进行补偿，一般而言，多个所述补偿值至少为三个补偿值，多个所述补偿值中至少有三个补偿值分别对应低灰阶、中灰阶、高灰阶，例如，在本实施例中，多个所述补偿值为三个补偿值，分别为第一补偿值a、第二补偿值b、第三补偿值c，三个补偿值a、b、c中第一补偿值a对应低灰阶中的一个灰阶(最低灰阶gmin)进行补偿，第二补偿值b对应中灰阶中的一个灰阶(中间灰阶gmid)进行补偿，第三补偿值c对应高灰阶中的一个灰阶(最高灰阶gmax)进行补偿。
在本实施例中，不同灰阶中最低灰阶gmin对应的补偿值为第一补偿值a，例如，第一补偿值a对应的最低灰阶gmin为25灰阶，最高灰阶gmax对应的补偿值为第三补偿值c，例如第三补偿值c对应的最高灰阶gmax为200灰阶。其他存储的补偿值对应的灰阶位于最低灰阶gmin和最高灰阶gmax之间，例如位于25灰阶和200灰阶之间。
S120，获取0灰阶对应的首端补偿值m，其中，m不为0；
由于现有技术将0灰阶对应的补偿值设定为0，从而0灰阶不需要补偿，后续根据0和最低灰阶gmin对应的补偿值计算0灰阶-最低灰阶gmin之间的补偿值，从而造成mura补偿效果不佳。实际情况为0灰阶仍然需要进行灰阶补偿，从而，在本实施例中，显示面板获取0灰阶对应的首端补偿值m，所述首 端补偿值m可以通过计算获得，也可以通过实验实际测量出来，所述首端补偿值m可以为实际补偿值，也可以为接近实际补偿值，所述首端补偿值m不为0。在本实施例中，所述首端补偿值针对不同的显示面板可以是相同，也可以是不同的显示面板具有不同的首端补偿值。
S130,获取显示面板的当前灰阶；
由于显示面板进行显示时当前灰阶在进行动态变化，从而需要获取当前灰阶才好进行灰阶补偿，只有当前灰阶位于0灰阶-最低灰阶gmin之间时，才要用到首端补偿值m计算获得补偿值。
S140，若显示面板的当前灰阶处于0灰阶-最低灰阶gmin之间，则根据第一补偿值a和首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值。
若显示面板获得当前灰阶处于0灰阶-最低灰阶gmin之间时，则根据第一补偿值a和首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值，具体而言，假设当前灰阶为第k灰阶，所述第k灰阶位于0灰阶-最低灰阶gmin之间，则当前灰阶对应的第一目标补偿值yk可以根据以下线性插值计算获得：
yk＝m+(k-0)*(a-m)/(gmin-0)
假设最低灰阶gmin为第20灰阶，第k灰阶为第10灰阶，则：
y10＝m+(10-0)*(a-m)/(20-0)
从而，参照图3，可以对比知道本实施例计算获得的0灰阶-最低灰阶gmin之间的第一目标补偿值相对现有技术更接近实际所需的补偿值。
S150：根据所述第一目标补偿值对所述显示面板的当前灰阶进行补偿。
在本实施例中，通过计算获得第一目标补偿值后，根据所述第一目标补偿值对所述显示面板的当前灰阶进行补偿。
在本实施例中，由于0灰阶对应的首端补偿值不是设定为0，而是接近实际值或者就为实际值的首端补偿值m，从而通过线性插值计算获得0灰阶-最低灰阶gmin之间的第一目标补偿值比较接近实际补偿值，从而最低灰阶gmin-0灰阶之间mura补偿效果较好，从而显示效果较佳。
在本实施例中，所述首端补偿值m＝xa，其中x是首端补偿系数，0＜x＜1，从而，第k灰阶对应的第一目标补偿值yk的计算公式如下：
yk＝xa+(k-0)*(a-xa)/(gmin-0)
从而，获取0灰阶对应的首端补偿值的步骤之前还包括步骤：
存储首端补偿系数x。
从而，首端补偿值可以根据首端补偿系数x计算获得。在此处，首端补偿系数x的取值由外部mura系统处理得出，外部mura系统增加拍摄一个低灰阶j(第j灰阶位于0灰阶-最低灰阶gmin之间，较佳第j灰阶位于第10灰阶～最低灰阶gmin之间，此灰阶不能太低，因为相机感光有一定限制)的mura形态，得到第j灰阶对应的补偿数据p，根据第j灰阶对应的补偿数据p和第一补偿值a的大小关系计算出首端补偿系数x的数值并进行存储，第j灰阶对应的补偿数据p则不需要存储在flash中，由下面公式计算出系数x的数值。
(p-x*a)/(a-x*a)＝m/gmin
在本实施例中，通过存储首端补偿系数x，由于首端补偿系数x较小，从而可以节省存储空间，当然，在本发明的其他实施例中，也可以直接存储首端补偿值m。
在本实施例中，所述首端补偿系数x可以存储在时序控制器(Tcon IC)中，在产品调试阶段选择一个固定的参数x设置在时序控制器(Tcon IC)内部。在本发明的其他实施例中，所述首端补偿系数x还可以存储在数据存储器(flash)中，这样可以根据每片显示面板的实际状况，选择不同的首端补偿系数x数值。在本实施例中，对mura现象进行灰阶补偿的多个所述补偿值是存储在数据存储器中。
在本实施例中，由于低灰阶中其中一个灰阶(在这里该灰阶称作最低灰阶gmin)的补偿值为第一补偿值a，中灰阶中其中一个灰阶(在这里该灰阶称作中间灰阶gmid)的补偿值为第二补偿值b，高灰阶中其中一个灰阶(在这里该灰阶称作最高灰阶gmax)的补偿值为第三补偿值c，从而若显示面板的当前灰阶第k灰阶处于最低灰阶gmin-中间灰阶gmid之间时，则根据第一补偿值a和第二补偿值b进行线性插值计算获得当前灰阶第k灰阶对应的第三目标补偿值 yk，并根据所述第三目标补偿值对所述显示面板的当前灰阶进行补偿，第三目标补偿值yk具体计算公式为：
yk＝a+(k-gmin)*(b-a)/(gmid-gmin)。
若显示面板的当前灰阶第k灰阶处于中间灰阶gmid-最高灰阶gmax之间时，则根据第二补偿值b和第三补偿值c进行线性插值计算获得当前灰阶第k灰阶对应的第四目标补偿值yk，并根据所述第三目标补偿值对所述显示面板的当前灰阶进行补偿，第四目标补偿值yk具体计算公式为：
yk＝b+(k-gmid)*(c-b)/(gmax-gmid)
另外，在本发明的其他实施例中，还可以不存在第二补偿值b，则最低灰阶gmin-最高灰阶gmax之间的补偿值同样可以根据线性插值结算获得。
本发明还提供一种显示面板，请参见图4，包括：
第一存储单元110，用于存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶gmin对应的补偿值为第一补偿值a；
第一获取单元120，用于获取0灰阶对应的首端补偿值m，其中，m不为0；
第二获取单元130，用于获取显示面板的当前灰阶；
处理单元140，用于若第二获取单元130获取显示面板的当前灰阶处于0灰阶-最低灰阶gmin之间时，则根据第一补偿值a和首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值。
若第二获取单元130获得当前灰阶处于0灰阶-最低灰阶gmin之间时，则处理单元140根据第一补偿值a和首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值，具体而言，假设当前灰阶为第k灰阶，所述第k灰阶位于0灰阶-最低灰阶gmin之间，则当前灰阶对应的第一目标补偿值yk可以根据以下线性插值计算获得：
yk＝m+(k-0)*(a-m)/(gmin-0)
补偿单元150，用于根据所述第一目标补偿值对所述显示面板的当前灰阶进行补偿。
在本实施例中，所述第一获取单元120、第二获取单元130、处理单元140、补偿单元150可以都集成在时序控制器(Tcon IC)中，也可以为分别单独的电子元器件。
在本实施例中，第一获取单元120获取的首端补偿值m＝xa，其中x是首端补偿系数，0＜x＜1，所述显示面板还包括第二存储单元，用于存储首端补偿系数x，在本实施例中，所述第一存储单元和第二存储单元可以为同一个存储器，也可以为分别的存储器。在本实施例中，所述第一存储单元为数据存储器(flash)，所述第二存储单元位数据存储器(flash)或者时序控制器(Tcon IC)。
本实施例中，由于低灰阶中其中一个灰阶(在这里该灰阶称作最低灰阶gmin)的补偿值为第一补偿值a，中灰阶中其中一个灰阶(在这里该灰阶称作中间灰阶gmid)的补偿值为第二补偿值b，高灰阶中其中一个灰阶(在这里该灰阶称作最高灰阶gmax)的补偿值为第三补偿值c，从而若第二获取单元130获得当前灰阶第k灰阶处于最低灰阶gmin-中间灰阶gmid之间时，则处理单元140根据第一补偿值a和第二补偿值b进行线性插值计算获得当前灰阶第k灰阶对应的第三目标补偿值yk，具体计算公式为：
yk＝a+(k-gmin)*(b-a)/(gmid-gmin)
所述补偿单元150根据所述第三目标补偿值对所述显示面板的当前灰阶进行补偿。
若第二获取单元130获得当前灰阶第k灰阶处于中间灰阶gmid-最高灰阶gmax之间时，则处理单元140根据第二补偿值b和第三补偿值c进行线性插值计算获得当前灰阶第k灰阶对应的第四目标补偿值yk，具体计算公式为：
yk＝b+(k-gmid)*(c-b)/(gmax-gmid)
所述补偿单元150根据所述第四目标补偿值对所述显示面板的当前灰阶进行补偿。
另外，在本发明的其他实施例中，还可以不存在第二补偿值b，则最低灰阶gmin-最高灰阶gmax之间的补偿值处理单元140同样可以根据线性插值结算获得。
另外，在本实施例中，由于255灰阶的补偿值设定为0(默认值，非准确 值)，然后最高灰阶gmax-255灰阶的补偿值根据线性插值计算获得，一般说来最高灰阶gmax-255灰阶面板出现mura问题不多，但是为了进一步提高显示面板的显示质量，以下描述第二实施例用于进一步提高显示的显示质量。
第二实施例
图5为本发明显示面板的mura现象补偿方法的第二实施例流程图，图5的方法流程与图2的方法流程相似，本实施例与第一实施例的主要不同点为改善了对最高灰阶gmax-255灰阶之间的补偿，请参见图5，本实施例包括步骤S210-S250。
S210，存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶gmin对应的补偿值为第一补偿值a，不同灰阶中最高灰阶gmax对应的补偿值为第三补偿值c；
其中，本实施例中，除了不同灰阶中最低灰阶gmin对应的补偿值为第一补偿值a外，不同灰阶中最高灰阶gmax对应的补偿值为第三补偿值c，也即不同灰阶包括最低灰阶gmin和最高灰阶gmax，存储的多个补偿值包括第一补偿值a和第三补偿值c。
S220,获取0灰阶对应的首端补偿值m，其中，所述m不为0。
该步骤同S120，在此就不再赘述。
S260，获取255灰阶对应的末端补偿值n，其中，所述n不为0；
由于现有技术将255灰阶对应的补偿值设定为0(此补偿值非准确值)，从而255灰阶不需要补偿，后续根据0和最高灰阶gmax对应的补偿值计算255灰阶-最高灰阶gmax之间的第二目标补偿值，会造成mura补偿效果不佳。实际情况为255灰阶仍然需要进行灰阶补偿，从而，在本实施例中，显示面板获取255灰阶对应的末端补偿值n，所述n不为0，所述末端补偿值n可以通过计算获得，也可以通过实验实际测量出来，所述末端补偿值n可以为实际补偿值，也可以为接近实际补偿值。在本实施例中，所述末端补偿值针对不同的显示面板可以是相同，也可以是不同的显示面板具有不同的首端补偿值。
S230：获取显示面板的当前灰阶。
该步骤同S130，在此就不再赘述。
S240,若显示面板的当前灰阶处于0灰阶-最低灰阶gmin之间时，则根据第一补偿值a和首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值；若显示面板的当前灰阶处于最高灰阶gmax-255灰阶之间时，则根据末端补偿值n和第三补偿值c进行线性插值计算获得当前灰阶对应的第二目标补偿值。
其中，在本实施例中，若显示面板的当前灰阶第k灰阶处于0灰阶-最低灰阶gmin之间时，则根据第一补偿值a和首端补偿值m进行线性插值计算获得当前灰阶第k灰阶对应的第一目标补偿值yk，计算公式如下：
yk＝m+(k-0)*(a-m)/(gmin-0)
若显示面板的当前灰阶处于最高灰阶gmax-255灰阶之间时，则根据末端补偿值n和第三补偿值c进行线性插值计算获得当前灰阶对应的第二目标补偿值，具体而言，假设当前灰阶为第k灰阶，所述第k灰阶位于第255灰阶-最高灰阶gmax之间，则当前灰阶第k灰阶对应的第二目标补偿值yk可以根据以下公式计算获得：
yk＝n+(255-k)*(c-n)/(255-gmax)
假设最高灰阶gmax为200灰阶，第k灰阶为第240灰阶，则：
Y240＝n+(255-240)*(c-n)/(255-200)。
S250，根据所述第一目标补偿值或第二目标补偿值对所述显示面板的当前灰阶进行补偿。
在本实施例中，通过计算获得第一目标补偿值或第二目标补偿值后，根据所述第一目标补偿值或所述第二目标补偿值对所述显示面板的当前灰阶进行补偿。
在本实施例中，由于255灰阶对应的末端补偿值不是设定为0，而是接近实际值或者就为实际值的末端补偿值n，从而通过线性插值计算获得255灰阶-最高灰阶gmax之间的第二目标补偿值比较接近实际补偿值，从而最高灰阶gmax-255灰阶之间mura补偿效果较好，从而显示效果进一步改善。
本实施例相对第一实施例，既不将首端补偿值设置为0，而是设定为实际值或者接近实际值的m，也不将末端补偿值设定为0，而是设定为实际值或者 接近实际值的n，从而当前灰阶处于0灰阶-最低灰阶gmin时，计算获得的当前灰阶对应的第一目标补偿值比较接近实际补偿值，从而mura补偿效果较好；从而当前灰阶处于255灰阶-最高灰阶gmax时，计算获得的当前灰阶对应的第二目标补偿值比较接近实际补偿值，从而mura补偿效果较好，从而整体mura补偿效果较好，显示效果进一步改善。
在本实施例中，所述末端补偿值n＝yc，其中y是末端补偿系数，0＜y＜1，所述末端补偿系数y可以同首端补偿系数x一样获得，所述末端补偿系数可以存储在时序控制器(Tcon IC)中或者数据存储器(flash)中。
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0灰阶对应的首端补偿值不是设定为0，而是接近实际值或者就为实际值的首端补偿值m，从而通过线性插值计算获得0灰阶-最低灰阶gmin之间的第一目标补偿值比较接近实际补偿值，从而最低灰阶gmin-0灰阶之间mura补偿效果较好，从而显示效果较佳。
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：
    存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶gmin对应的所述补偿值为第一补偿值a；
    获取0灰阶对应的首端补偿值m，其中，m不为0；
    获取显示面板的当前灰阶；
    若显示面板的当前灰阶处于所述0灰阶-所述最低灰阶gmin之间，则根据所述第一补偿值a和所述首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值；
    根据所述第一目标补偿值对所述显示面板的当前灰阶进行补偿。
  2. 如权利要求1所述的显示面板的mura现象补偿方法，其中，m＝xa，其中所述x是首端补偿系数，0＜x＜1。
  3. 如权利要求1所述的显示面板的mura现象补偿方法，其中，位于0灰阶-最低灰阶gmin之间的当前灰阶第k灰阶对应的第一目标补偿值yk计算公式为：
    yk＝m+(k-0)*(a-m)/(gmin-0)。
  4. 如权利要求2所述的显示面板的mura现象补偿方法，其中，所述首端补偿系数x存储在时序控制器中或者存储在数据存储器中。
  5. 如权利要求1所述的显示面板的mura现象补偿方法，其中，不同灰阶中最高灰阶gmax对应的所述补偿值为第三补偿值c，所述方法还包括：
    获取255灰阶对应的末端补偿值n，其中，所述n不为0；
    若显示面板的当前灰阶处于所述最高灰阶gmax-所述255灰阶之间时，则根据所述末端补偿值n和第三补偿值c进行线性插值计算获得当前灰阶对应的 第二目标补偿值；
    根据所述第二目标补偿值对所述显示面板的当前灰阶进行补偿。
  6. 如权利要求5所述的显示面板的mura现象补偿方法，其中，n＝yc，其中所述y是末端补偿系数，0＜y＜1。
  7. 如权利要求1所述的显示面板的mura现象补偿方法，其中，不同灰阶中还包括中间灰阶gmid和最高灰阶gmax，所述中间灰阶gmid位于所述最低灰阶gmin和所述最高灰阶gmax之间，所述中间灰阶gmid对应的第二补偿值为b，所述最高灰阶gmax对应第三补偿值c，所述方法还包括：
    若显示面板的当前灰阶处于所述最低灰阶gmin-所述中间灰阶gmid之间时，则根据所述第一补偿值a和第二补偿值b进行线性插值计算获得当前灰阶对应的第三目标补偿值，并根据所述第三目标补偿值对所述显示面板的当前灰阶进行补偿；或者，
    若显示面板的当前灰阶处于所述中间灰阶gmid-所述最高灰阶gmax之间时，则根据第二补偿值b和第三补偿值c进行线性插值计算获得当前灰阶对应的第四目标补偿值，并根据所述第四目标补偿值对所述显示面板的当前灰阶进行补偿。
  8. 一种显示面板，其中，包括：
    第一存储单元，用于存储显示面板对mura现象进行灰阶补偿的多个补偿值，多个所述补偿值对应显示面板的不同灰阶进行补偿，其中，不同灰阶中最低灰阶gmin对应的所述补偿值为第一补偿值a；
    第一获取单元，用于获取0灰阶对应的首端补偿值m，其中，m不为0；
    第二获取单元，用于获取显示面板的当前灰阶；
    处理单元，用于若第二获取单元获取显示面板的当前灰阶处于所述0灰阶-所述最低灰阶gmin之间时，则根据所述第一补偿值a和所述首端补偿值m进行线性插值计算获得当前灰阶对应的第一目标补偿值；
    补偿单元，用于根据所述第一目标补偿值对所述显示面板的当前灰阶进行 补偿。
  9. 如权利要求8所述的显示面板，其中，m＝xa，其中x是首端补偿系数，0＜x＜1，所述显示面板还包括第二存储单元，用于存储所述首端补偿系数x。
  10. 如权利要求9所述的显示面板，其中，所述第一存储单元为数据存储器，所述第二存储单元为数据存储器或者时序控制器。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111276089A (zh) * 2020-04-13 2020-06-12 昆山国显光电有限公司 一种灰阶补偿计算方法、装置和显示装置
CN114519984A (zh) * 2020-11-20 2022-05-20 Lx半导体科技有限公司 去除不匀补偿装置和用于驱动显示面板的数据处理电路

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* Cited by examiner, † Cited by third party
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CN115171605B (zh) * 2022-07-19 2025-07-25 京东方科技集团股份有限公司 画面补偿方法、装置及显示设备
CN115985216A (zh) * 2022-12-23 2023-04-18 Tcl华星光电技术有限公司 亮度补偿方法以及亮度补偿装置
CN117975907B (zh) * 2024-04-01 2024-06-07 昇显微电子(苏州)股份有限公司 一种提升低亮度Demura效果的方法和装置
CN119694238B (zh) * 2024-12-30 2026-02-27 合肥维信诺科技有限公司 老化数据确定方法、老化补偿方法、电子设备、存储介质

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1242557A (zh) * 1998-07-21 2000-01-26 明碁电脑股份有限公司 多段式灰阶补偿方法
CN101231830A (zh) * 2007-01-26 2008-07-30 群康科技(深圳)有限公司 液晶显示装置伽玛校正表的生成方法
KR20080079378A (ko) * 2007-02-27 2008-09-01 삼성전자주식회사 표시 장치
CN102855842A (zh) * 2012-09-04 2013-01-02 京东方科技集团股份有限公司 一种图像显示控制方法及装置
CN103943051A (zh) * 2013-01-17 2014-07-23 三星显示有限公司 显示图像的方法及执行该方法的显示装置
CN105913815A (zh) * 2016-04-15 2016-08-31 深圳市华星光电技术有限公司 显示面板Mura现象补偿方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3661584B2 (ja) * 2000-01-28 2005-06-15 セイコーエプソン株式会社 電気光学装置、画像処理回路、画像データ補正方法、および、電子機器
JP2006330312A (ja) * 2005-05-26 2006-12-07 Hitachi Ltd 画像表示装置
JP4770619B2 (ja) * 2005-09-29 2011-09-14 ソニー株式会社 表示画像補正装置、画像表示装置、表示画像補正方法
KR101323457B1 (ko) * 2008-12-10 2013-10-29 엘지디스플레이 주식회사 평판표시장치의 표시결함 보상방법 및 장치
KR101450949B1 (ko) * 2011-10-04 2014-10-16 엘지디스플레이 주식회사 유기발광 표시장치
KR101958634B1 (ko) * 2012-12-13 2019-03-15 엘지디스플레이 주식회사 디스플레이 장치의 무라 검출 장치 및 방법
KR102175702B1 (ko) * 2013-12-30 2020-11-09 삼성디스플레이 주식회사 표시 장치의 얼룩 보상 방법 및 이를 수행하는 비전 검사 장치
CN103854556B (zh) * 2014-02-19 2016-05-18 北京京东方显示技术有限公司 基色子像素的电压补偿装置及方法、显示装置
TWI525604B (zh) * 2014-05-30 2016-03-11 緯創資通股份有限公司 影像分析和影像顯示的裝置和方法
KR102181881B1 (ko) * 2014-11-21 2020-11-24 삼성디스플레이 주식회사 비전 검사 장치 및 이의 감마 및 얼룩 보정 방법
KR102281099B1 (ko) * 2014-12-10 2021-07-26 삼성디스플레이 주식회사 표시 장치, 이의 구동 방법 및 이를 위한 비젼 검사 장치
EP3264402A4 (en) * 2015-03-20 2018-01-17 Huawei Technologies Co., Ltd. Method for correcting screen asymmetry and device and system thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1242557A (zh) * 1998-07-21 2000-01-26 明碁电脑股份有限公司 多段式灰阶补偿方法
CN101231830A (zh) * 2007-01-26 2008-07-30 群康科技(深圳)有限公司 液晶显示装置伽玛校正表的生成方法
KR20080079378A (ko) * 2007-02-27 2008-09-01 삼성전자주식회사 표시 장치
CN102855842A (zh) * 2012-09-04 2013-01-02 京东方科技集团股份有限公司 一种图像显示控制方法及装置
CN103943051A (zh) * 2013-01-17 2014-07-23 三星显示有限公司 显示图像的方法及执行该方法的显示装置
CN105913815A (zh) * 2016-04-15 2016-08-31 深圳市华星光电技术有限公司 显示面板Mura现象补偿方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3640932A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111276089A (zh) * 2020-04-13 2020-06-12 昆山国显光电有限公司 一种灰阶补偿计算方法、装置和显示装置
CN114519984A (zh) * 2020-11-20 2022-05-20 Lx半导体科技有限公司 去除不匀补偿装置和用于驱动显示面板的数据处理电路

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