WO2023108672A1 - 显示面板的mura补偿方法及显示面板 - Google Patents

显示面板的mura补偿方法及显示面板 Download PDF

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Publication number
WO2023108672A1
WO2023108672A1 PCT/CN2021/139565 CN2021139565W WO2023108672A1 WO 2023108672 A1 WO2023108672 A1 WO 2023108672A1 CN 2021139565 W CN2021139565 W CN 2021139565W WO 2023108672 A1 WO2023108672 A1 WO 2023108672A1
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area
pixel unit
value
compensation
display sub
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PCT/CN2021/139565
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English (en)
French (fr)
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王业栋
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武汉华星光电半导体显示技术有限公司
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Priority to US17/623,616 priority Critical patent/US20240038198A1/en
Publication of WO2023108672A1 publication Critical patent/WO2023108672A1/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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2011—Display of intermediate tones by amplitude modulation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • 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
    • G09G3/2074—Display of intermediate tones 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/046—Dealing with screen burn-in prevention or compensation of the effects thereof
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0686—Adjustment of display parameters with two or more screen areas displaying information with different brightness or colours
    • 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
    • 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
    • G09G3/30—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 using electroluminescent panels
    • G09G3/32—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 using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]

Definitions

  • the present application relates to the technical field of display driving, in particular to a compensation method for a display panel and a display panel.
  • each pixel is much smaller than the pixels in other display areas to reduce the impact on the amount of light entering, and at the same time, the driving circuit under the pixel is moved out of the imaging area to further increase the amount of light entering, and finally Then change the lead connecting the pixel and the driving circuit to a transparent material, and change the traditional straight lead to a curved line, and can be set around the camera area to avoid the diffraction effect on the light and improve the image taking effect.
  • the lead wire corresponding to the outer pixel of the imaging area is shorter, and the lead wire corresponding to the pixel at the center is longer, so under low brightness, the load difference between the two is obvious, and it is easy to A bright ring is generated at the edge of the camera area, which affects the display effect.
  • Embodiments of the present application provide a compensation method for a display panel and a display panel, which can effectively improve display unevenness generated in a photosensitive region of the display panel.
  • An embodiment of the present application provides a mura compensation method for a display panel, the display panel includes a display area, the display area includes a conventional display sub-area and a functional display sub-area adjacent to the conventional display sub-area, and the display Panel mura compensation methods include:
  • the actual gray scale value and the actual luminance value of each pixel unit in the functional display sub-area determine the secondary compensation of each of the pixel units in the functional display sub-area value, and perform secondary compensation on each of the pixel units in the functional display sub-area.
  • the functional display is determined according to the target luminance value, the actual gray scale value and the actual luminance value of each pixel unit in the functional display sub-area.
  • the secondary compensation value of each pixel unit in the sub-area, and the step of performing secondary compensation to each of the pixel units in the functional display sub-area includes:
  • the target luminance value, the actual luminance value and the actual gray scale value of each of the pixel units in the functional display sub-area determine the compensation base of each of the pixel units in the functional display sub-area;
  • the secondary compensation value of each of the pixel units in the functional display sub-area is determined according to the compensation factor and the compensation base of each of the pixel units in the functional display sub-area.
  • the functional display is determined according to the target luminance value, the actual luminance value, and the actual grayscale value of each pixel unit in the functional display sub-area.
  • the step of the compensation factor of each pixel unit in the sub-area includes:
  • the compensation factor database includes multiple sets of optical parameters, and one set of optical parameters corresponds to one compensation factor.
  • the preset brightness threshold is 200 nit.
  • each set of optical parameters includes a preset brightness value and a preset gray scale value.
  • the functional display is determined according to the target luminance value, the actual luminance value, and the actual grayscale value of each pixel unit in the functional display sub-area.
  • the step of the compensation factor of each pixel unit in the sub-area also includes:
  • the compensation factor of each pixel unit in the functional display sub-area is 0.
  • the preset brightness threshold is 200 nit.
  • the functional display is determined according to the target luminance value, the actual luminance value, and the actual grayscale value of each pixel unit in the functional display sub-area.
  • the step of the compensation base of each pixel unit in the sub-area includes:
  • N is the compensation base of each pixel unit in the functional display sub-area
  • A is the target luminance value of each pixel unit in the functional display sub-area
  • B is the target brightness value of each pixel unit in the functional display sub-area.
  • C is the actual grayscale value of each pixel unit in the functional display sub-region.
  • the second value of each pixel unit in the functional display sub-area is determined according to the compensation factor and the compensation base of each pixel unit in the functional display sub-area.
  • the steps of secondary compensation value include:
  • the formula for determining the secondary compensation value of each pixel unit in the functional display sub-area according to the compensation factor and the compensation base of each pixel unit in the functional display sub-area is:
  • M is the secondary compensation value of each pixel unit in the functional display sub-area
  • N is the compensation base of each pixel unit in the functional display sub-area
  • X is the functional display sub-area The compensation factor of each pixel unit in the sub-area.
  • the step of obtaining the target brightness value of each pixel unit in the display panel and the target voltage value corresponding to the target brightness value, and performing initial compensation for each pixel unit include:
  • a mura compensation method of a display panel includes a display area, and the display area includes a conventional display sub-area and a functional display sub-area adjacent to the conventional display sub-area, And the mura compensation method of the display panel includes:
  • the target luminance value, the actual gray scale value and the actual luminance value of each pixel unit in the functional display sub-area determine the secondary compensation of each of the pixel units in the functional display sub-area value, and perform secondary compensation on each of the pixel units in the functional display sub-area;
  • performing secondary compensation on each pixel unit in the functional display sub-area includes the following steps:
  • the target luminance value, the actual luminance value and the actual gray scale value of each of the pixel units in the functional display sub-area determine the compensation base of each of the pixel units in the functional display sub-area;
  • the secondary compensation value of each of the pixel units in the functional display sub-area is determined according to the compensation factor and the compensation base of each of the pixel units in the functional display sub-area.
  • the functional display is determined according to the target luminance value, the actual luminance value, and the actual grayscale value of each pixel unit in the functional display sub-area.
  • the step of the compensation factor of each pixel unit in the sub-area includes:
  • the compensation factor database includes multiple sets of optical parameters, and one set of optical parameters corresponds to one compensation factor.
  • each set of optical parameters includes a preset brightness value and a preset gray scale value.
  • the functional display is determined according to the target luminance value, the actual luminance value, and the actual grayscale value of each pixel unit in the functional display sub-area.
  • the step of the compensation factor of each pixel unit in the sub-area also includes:
  • the compensation factor of each pixel unit in the functional display sub-area is 0.
  • the preset brightness threshold is 200 nit.
  • the functional display is determined according to the target luminance value, the actual luminance value, and the actual grayscale value of each pixel unit in the functional display sub-area.
  • the step of the compensation base of each pixel unit in the sub-area includes:
  • N is the compensation base of each pixel unit in the functional display sub-area
  • A is the target luminance value of each pixel unit in the functional display sub-area
  • B is the target brightness value of each pixel unit in the functional display sub-area.
  • C is the actual grayscale value of each pixel unit in the functional display sub-region.
  • the second value of each pixel unit in the functional display sub-area is determined according to the compensation factor and the compensation base of each pixel unit in the functional display sub-area.
  • the steps of secondary compensation value include:
  • the formula for determining the secondary compensation value of each pixel unit in the functional display sub-area according to the compensation factor and the compensation base of each pixel unit in the functional display sub-area is:
  • M is the secondary compensation value of each pixel unit in the functional display sub-area
  • N is the compensation base of each pixel unit in the functional display sub-area
  • X is the functional display sub-area The compensation factor of each pixel unit in the sub-area.
  • the step of obtaining the target brightness value of each pixel unit in the display panel and the target voltage value corresponding to the target brightness value, and performing initial compensation for each pixel unit include:
  • a display panel includes a display area, the display area includes a conventional display sub-area and a functional display sub-area adjacent to the conventional display sub-area, the functional display sub-area
  • the region includes a middle region and a bright ring region disposed around the middle region;
  • the display panel includes a first pixel unit arranged in the bright ring region and a second pixel unit arranged in the middle region;
  • the driving voltage applied to the first pixel unit is higher than the driving voltage applied to the second pixel unit.
  • the driving voltage applied to the first pixel unit is greater than or equal to 1V and less than or equal to 6.8V;
  • the driving voltage applied to the second pixel unit is greater than or equal to 1V and less than or equal to 6.8V.
  • this application performs secondary compensation on the pixel units in the functional display sub-area after the initial compensation of the display panel, so as to improve the display panel due to the different lengths of the anode leads in the functional display sub-area. , leading to a large difference in loads and a phenomenon of a bright ring is likely to be generated, thereby improving the display uniformity of the display panel.
  • FIG. 1 is a flow chart of a mura compensation method for a display panel provided in an embodiment of the present application
  • FIG. 2 is a logic diagram of a mura compensation method for a display panel provided in an embodiment of the present application
  • Fig. 3 is a schematic diagram showing uneven distribution in the related art
  • FIG. 4 is a schematic diagram of a display distribution of a display panel after mura compensation provided by an embodiment of the present application.
  • An embodiment of the present application provides a mura compensation method for a display panel.
  • the display panel includes a display area, the display area includes a conventional display sub-area and a functional display sub-area adjacent to the conventional display sub-area, and the mura compensation method for the display panel includes:
  • the target luminance value of each pixel unit in the display panel and the target voltage value corresponding to the target luminance value are acquired, and initial compensation is performed on each pixel unit.
  • the acquisition function displays the actual gray scale value and actual brightness value of each pixel unit in the sub-area.
  • the target luminance value, actual grayscale value and actual luminance value of each pixel unit in the functional display sub-area determine the secondary compensation value of each pixel unit in the functional display sub-area, and perform secondary compensation for each pixel unit in the functional display sub-area compensation.
  • the functional display sub-area may be a photosensitive area, such as a camera area.
  • the display panel includes a display area
  • the display area includes a conventional display sub-area for normal display and a functional display sub-area that needs to improve light transmission.
  • the functional display sub-area may be a camera area.
  • the mura compensation method of the display panel includes:
  • the target luminance value of the display panel and the target voltage value corresponding to the target luminance value wherein the target voltage value can be obtained according to the corresponding relationship between the voltage and the luminance in the gamma curve of the display panel. It can be understood that in subsequent embodiments , the luminance value obtained from the voltage value, or the voltage value obtained from the luminance value can be obtained from the gamma curve of the display panel.
  • the single-color brightness data corresponding to each of the three primary colors can be collected by the camera, and then according to the initial The brightness value, initial voltage value, target brightness value, and target voltage value respectively calculate the initial compensation value of each pixel unit. Since there are many initial compensation values of pixel units in the display panel, as an example to save storage space, the initial compensation value of some pixel units can be selected. The compensation value is stored, and the compensation value in other pixel units can be obtained through linear interpolation calculation, so as to perform initial compensation for each pixel unit in the display panel. It can be understood that, the above-mentioned primary compensation process can be realized by referring to a conventional process, which will not be repeated here.
  • the acquisition function displays the actual gray scale value and the actual brightness value of each pixel unit in the sub-area.
  • the actual grayscale value and actual brightness value of each pixel unit in the functional display sub-area are acquired, wherein the actual brightness value of each pixel unit in the functional display sub-area can be obtained through a camera, etc. device to acquire.
  • the target luminance value, actual luminance value and actual grayscale value of each pixel unit in the functional display sub-area determine the compensation factor of each pixel unit in the functional display sub-area.
  • the compensation factor of each pixel unit in the functional display sub-area is determined in the compensation factor database, wherein the compensation factor database includes multiple sets of optical parameters, and one set The optical parameter corresponds to a compensation factor.
  • each group of optical parameters includes a reference brightness value and a reference gray scale value
  • the corresponding compensation factor is obtained according to the actual brightness value and the actual gray scale value of each pixel unit.
  • Table 1 it is the compensation factor database lookup table provided by the embodiment of the present application. It should be noted that the data in the following table is only used to illustrate the compensation process, wherein, by debugging the sample display panel, in different Multiple compensation factors are selected for compensation under the grayscale value and brightness value, so as to obtain compensation factors under different grayscale values and corresponding brightness values.
  • gray scale value and brightness value not selected in debugging it can be calculated by linear interpolation.
  • the compensation factor corresponding to 96 gray levels (30-45)/(100-10)*(80-10)+45 ⁇ 33.3.
  • the target brightness value of each pixel unit is less than or equal to 200nit, but in other embodiments of the present application, the actual brightness value of each pixel unit can also be used as the judging standard, the weighted value of the actual luminance value and the target luminance value may be used as the judging standard, which is not limited herein.
  • the actual grayscale value of each pixel unit needs to be less than or equal to 196 grayscales; further, the first display mode may be a PWM dimming mode.
  • the display panel when the target brightness value is greater than the preset brightness threshold, it is determined that the display panel is in the second display mode, that is, when the target brightness value is greater than 200nit, the display panel is in the second display mode.
  • the target luminance value, actual luminance value and actual grayscale value of each pixel unit in the functional display sub-area determine the compensation base of each pixel unit in the functional display sub-area;
  • the calculation formula of the compensation base of each pixel unit in the functional display sub-area is:
  • N is the compensation base of each pixel unit in the function display sub-area
  • A is the target luminance value of each pixel unit in the function display sub-area
  • B is the actual luminance value of each pixel unit in the function display sub-area
  • C is the function display The actual grayscale value of each pixel unit in the sub-area.
  • the compensation base of each pixel unit in the functional display sub-area is obtained through the above calculation formula of the compensation base of each pixel unit.
  • the compensation voltage value of each pixel unit in the functional display sub-area is determined, that is, the secondary compensation value.
  • M is the secondary compensation value of each pixel unit in the functional display sub-area
  • N is the compensation base of each pixel unit in the functional display sub-area
  • X is the compensation factor of each pixel unit in the functional display sub-area.
  • the compensation factor of each pixel unit in the functional display sub-area obtained in the above-mentioned embodiment is multiplied by the compensation base to obtain the secondary compensation value of each pixel unit in the functional display sub-area, and each pixel in the functional display sub-area The unit performs secondary compensation.
  • the compensation factor of each pixel unit in the first display mode, can be calculated, but in the second display mode, the compensation factor of each pixel unit is 0, that is, the implementation of this application
  • the mura compensation method of the display panel provided in the example can perform secondary compensation according to the display mode of the display panel, so as to compensate according to actual needs, so as to improve the phenomenon of uneven display in the camera area in the low-brightness mode in the related art.
  • one of the multiple display panels can be selected as a sample, and then the initial compensation value of each pixel unit in the display panel and the functional display sub-area can be obtained through the compensation method described in the above-mentioned embodiment.
  • the secondary compensation value of each pixel unit and burn the initial compensation value of each pixel unit in the display panel and the secondary compensation value of each pixel unit in the functional display sub-area into the drive module of the display panel, and pass the sample
  • the calculated initial compensation value and secondary compensation value can be used as public version compensation data and burned into other display panel drive modules for compensation.
  • the initial compensation value of each pixel unit in each display panel and the initial compensation value of each pixel unit in the functional display sub-area can be obtained through the compensation method described in the above embodiment.
  • the secondary compensation value of each pixel unit in each display panel and the secondary compensation value of each pixel unit in the functional display sub-area are burned into the driving module of the display panel, that is, this embodiment According to each display panel, it obtains its proprietary compensation data and burns it into its drive module for compensation.
  • the display panel receives the initial display data, which includes the initial voltage value of each pixel unit, and then uses the programmed initial compensation value to perform initial compensation on the initial voltage value of each pixel unit; then judges In the display mode of the display panel, when the display panel is in the first display mode, secondary compensation is performed on each pixel unit in the functional display sub-area by using the programmed secondary compensation value.
  • the secondary compensation value is 0.
  • the compensated data can be output for display.
  • the driving lines such as anode leads are arranged around the camera area
  • the lengths of the anode leads connected to pixels at different positions are different and the loads are also different, which easily causes uneven display of the display panel in the camera area.
  • the embodiment of the present application performs secondary compensation on the functional display sub-area to effectively improve the display unevenness in the functional display sub-area, as shown in Figure 4, which shows the mura compensation method of the display panel provided by the embodiment of the present application
  • the display uniformity and display effect of the display panel can be effectively improved.
  • the display images shown in FIG. 3 and FIG. 4 are obtained through detection under the detection conditions of 120 Hz and 10.8 nit (L32).
  • an embodiment of the present application also provides a display panel, and the display panel includes a display area, and the display area includes a conventional display sub-area and a functional display sub-area adjacent to the conventional display sub-area.
  • the functional display sub-area may be a photosensitive area, such as a camera area.
  • the functional display sub-area includes a middle area and a bright ring area arranged around the middle area, wherein the display panel further includes a first pixel unit arranged in the bright ring area and a second pixel unit arranged in the middle area. two-pixel unit.
  • the transistors and other devices corresponding to the first pixel unit and the second pixel unit in the functional display sub-area are all arranged outside the functional display sub-area, which can surround the functional display sub-area. area, and electrically connect devices such as transistors outside the functional display sub-area to the first pixel unit and the second pixel unit in the functional display sub-area through wiring, so as to apply voltage to the first pixel unit and the second pixel unit, Realize its luminous function.
  • the driving voltage applied to the first pixel unit is higher than the driving voltage applied to the second pixel unit.
  • the driving voltage applied to the first pixel unit is greater than or equal to 1V and less than or equal to 6.8V; the driving voltage applied to the second pixel unit is greater than or equal to 1V and less than or equal to 6.8V.
  • the display panel provided in the embodiment of the present application is compensated by the mura compensation method in the above embodiment, so as to improve the display unevenness that is prone to occur in the functional display sub-area of the display panel, and improve the display uniformity and display effect of the display panel.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

一种显示面板的mura补偿方法及显示面板。显示面板包括显示区，显示区包括常规显示子区以及功能显示子区，且显示面板的mura补偿方法包括：对显示区内各像素单元进行初次补偿(S10)；获取功能显示子区内各像素单元的实际灰阶值以及实际亮度值(S20)；确定功能显示子区内各像素单元的二次补偿值并进行二次补偿(S30)。

Description

显示面板的mura补偿方法及显示面板 技术领域
本申请涉及显示驱动技术领域，尤其涉及一种显示面板的补偿方法及显示面板。
背景技术
随着通信技术的发展，诸如智能手机等电子装置越来越普及。显示面板也朝着全面屏的方向发展。
目前，为了实现真正的全面屏，当下手机厂商都在积极研发屏下摄像头技术，即将前置摄像头安放在屏幕下方，为确保显示面板摄像区域透过性，摄像区域需要采用与其他显示区域不同的设计方案，每个像素点要比其他显示区域内的像素点小不少，以减少对进光量的影响，同时将像素下的驱动电路移开至摄像区域外，以进一步增大进光量，最后再把像素与驱动电路连接的引线改为透明材料，并将传统的平直引线改为曲线，且可围绕摄像区域设置，以避免对光造成衍射效应，影像拍照效果。
但由于透明阳极引线距离驱动电路的长短不一，摄像区域外圈像素对应的引线较短，越往中心位置的像素对应的引线越长，那么在低亮度下，两者负载差异表现明显，容易在摄像区域的边缘产生一个亮环，对显示效果造成影响。
技术问题
本申请实施例提供一种显示面板的补偿方法及显示面板，能够有效改善显示面板的感光区内产生的显示不均现象。
技术解决方案
本申请实施例提供一种显示面板的mura补偿方法，所述显示面板包括显示区，所述显示区包括常规显示子区以及与所述常规显示子区邻接的功能显示子区，且所述显示面板的mura补偿方法包括：
获取所述显示面板中各像素单元的目标亮度值以及达到所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿；
获取所述功能显示子区内各所述像素单元的实际灰阶值以及实际亮度值；
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际灰阶值以及所述实际亮度值，确定所述功能显示子区内各所述像素单元的二次补偿值，并对所述功能显示子区内各所述像素单元进行二次补偿。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际灰阶值以及所述实际亮度值，确定所述功能显示子区内各所述像素单元的二次补偿值，并对所述功能显示子区内各所述像素单元进行二次补偿的步骤，包括：
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子；
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数；
根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子的步骤，包括：
当所述目标亮度值小于或等于一预设亮度阈值时；
根据所述功能显示子区内各所述像素单元的所述实际亮度值以及所述实际灰阶值在补偿因子数据库中确定所述功能显示子区内各所述像素单元的所述补偿因子，其中，所述补偿因子数据库包括多组光学参数，且一组所述光学参数对应一所述补偿因子。
在本申请的一种实施例中，所述预设亮度阈值为200nit。
在本申请的一种实施例中，每一组所述光学参数皆包括一预设亮度值和一预设灰阶值。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示 子区内各所述像素单元的补偿因子的步骤，还包括：
当所述目标亮度值大于所述预设亮度阈值时；
所述功能显示子区内各所述像素单元的所述补偿因子为0。
在本申请的一种实施例中，所述预设亮度阈值为200nit。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数的步骤，包括：
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值确定所述功能显示子区内各所述像素单元的所述补偿基数的公式为：
Figure PCTCN2021139565-appb-000001
其中，N为所述功能显示子区内各所述像素单元的所述补偿基数，A为所述功能显示子区内各所述像素单元的所述目标亮度值，B为所述功能显示子区内各所述像素单元的所述实际亮度值，C为所述功能显示子区内各所述像素单元的所述实际灰阶值。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值的步骤，包括：
根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值的公式为：
M＝NX
其中，M为所述功能显示子区内各所述像素单元的所述二次补偿值，N为所述功能显示子区内各所述像素单元的所述补偿基数，X为所述功能显示子区内各所述像素单元的所述补偿因子。
在本申请的一种实施例中，所述获取所述显示面板中各像素单元的目标亮度值以及所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿的步骤，包括：
获取所述显示面板接收的各所述像素单元的初始电压值以及与所述初始 电压值对应的初始亮度值；
根据所述显示面板中各所述像素单元的所述初始电压值、所述初始亮度值、所述目标亮度值以及所述目标电压值获取各所述像素单元的初次补偿值，以对各所述像素单元进行初次补偿。
根据本发明的上述目的，还提供一种显示面板的mura补偿方法，所述显示面板包括显示区，所述显示区包括常规显示子区以及与所述常规显示子区邻接的功能显示子区，且所述显示面板的mura补偿方法包括：
获取所述显示面板中各像素单元的目标亮度值以及达到所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿；
获取所述功能显示子区内各所述像素单元的实际灰阶值以及实际亮度值；
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际灰阶值以及所述实际亮度值，确定所述功能显示子区内各所述像素单元的二次补偿值，并对所述功能显示子区内各所述像素单元进行二次补偿；
其中，对所述功能显示子区内各所述像素单元进行二次补偿包括以下步骤：
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子；
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数；
根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子的步骤，包括：
当所述目标亮度值小于或等于一预设亮度阈值时；
根据所述功能显示子区内各所述像素单元的所述实际亮度值以及所述实际灰阶值在补偿因子数据库中确定所述功能显示子区内各所述像素单元的所述补偿因子，其中，所述补偿因子数据库包括多组光学参数，且一组所述光学 参数对应一所述补偿因子。
在本申请的一种实施例中，每一组所述光学参数皆包括一预设亮度值和一预设灰阶值。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子的步骤，还包括：
当所述目标亮度值大于所述预设亮度阈值时；
所述功能显示子区内各所述像素单元的所述补偿因子为0。
在本申请的一种实施例中，所述预设亮度阈值为200nit。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数的步骤，包括：
根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值确定所述功能显示子区内各所述像素单元的所述补偿基数的公式为：
Figure PCTCN2021139565-appb-000002
其中，N为所述功能显示子区内各所述像素单元的所述补偿基数，A为所述功能显示子区内各所述像素单元的所述目标亮度值，B为所述功能显示子区内各所述像素单元的所述实际亮度值，C为所述功能显示子区内各所述像素单元的所述实际灰阶值。
在本申请的一种实施例中，所述根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值的步骤，包括：
根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值的公式为：
M＝NX
其中，M为所述功能显示子区内各所述像素单元的所述二次补偿值，N为所述功能显示子区内各所述像素单元的所述补偿基数，X为所述功能显示子 区内各所述像素单元的所述补偿因子。
在本申请的一种实施例中，所述获取所述显示面板中各像素单元的目标亮度值以及所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿的步骤，包括：
获取所述显示面板接收的各所述像素单元的初始电压值以及与所述初始电压值对应的初始亮度值；
根据所述显示面板中各所述像素单元的所述初始电压值、所述初始亮度值、所述目标亮度值以及所述目标电压值获取各所述像素单元的初次补偿值，以对各所述像素单元进行初次补偿。
根据本申请的上述目的，提供一种显示面板，所述显示面板包括显示区，所述显示区包括常规显示子区以及与所述常规显示子区邻接的功能显示子区，所述功能显示子区包括中间区域以及围绕所述中间区域设置的亮环区域；
所述显示面板包括设置于所述亮环区域内的第一像素单元以及设置于所述中间区域内的第二像素单元；
其中，当所述第一像素单元的亮度与所述第二像素单元的亮度相同时，加载于所述第一像素单元的驱动电压高于加载于所述第二像素单元的驱动电压。
在本申请的一种实施例中，加载于所述第一像素单元的驱动电压大于或等于1V，且小于或等于6.8V；
加载于所述第二像素单元的驱动电压大于或等于1V，且小于或等于6.8V。
有益效果
相较于现有技术，本申请在对显示面板进行初次补偿之后，再针对功能显示子区内的像素单元进行二次补偿，以改善显示面板在功能显示子区内由于阳极引线的长短不一，导致负载差异较大进而容易产生亮环的现象，提高了显示面板的显示均一性。
附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本申请实施例提供的显示面板的mura补偿方法流程图；
图2为本申请实施例提供的显示面板的mura补偿方法逻辑图；
图3为相关技术中显示不均分布示意图；
图4为本申请实施例提供的显示面板mura补偿之后的显示分布示意图。
本发明的实施方式
下面将结合本申请实施例中的附图，对本申请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申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域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，都属于本申请保护的范围。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本申请实施例提供一种显示面板的mura补偿方法，显示面板包括显示区，显示区包括常规显示子区以及与常规显示子区邻接的功能显示子区，且显示面板的mura补偿方法包括：
获取显示面板中各像素单元的目标亮度值以及达到目标亮度值对应的目标电压值，并对各像素单元进行初次补偿。
获取功能显示子区内各像素单元的实际灰阶值以及实际亮度值。
根据功能显示子区内各像素单元的目标亮度值、实际灰阶值以及实际亮度值，确定功能显示子区内各像素单元的二次补偿值，并对功能显示子区内各像素单元进行二次补偿。
需要说明的是，在本申请实施例中，功能显示子区可以为感光区域，例如摄像头区域。
在实施应用过程中，在相关技术中，由于摄像头区域周围设置有阳极引线等驱动线路，连接不同位置像素的阳极引线长短不同且负载也不相同，进而在 低亮度模式下，容易使得显示面板在摄像头区域形成显示不均的现象。而本申请实施例通过对功能显示子区进行二次补偿，以有效改善功能显示子区内的显示不均现象，提高显示面板的显示均一性和显示效果。
具体地，在本申请实施例中，显示面板包括显示区，显示区包括用于正常显示的常规显示子区以及需要提高透光的功能显示子区，例如功能显示子区可以为摄像头区域。
进一步地，请参照图1以及图2，显示面板的mura补偿方法包括：
S10、获取显示面板中各像素单元的目标亮度值以及达到目标亮度值对应的目标电压值，并对各像素单元进行初次补偿。
获取显示面板的目标亮度值以及目标亮度值对应的目标电压值，其中，目标电压值可根据显示面板的伽马曲线中的电压与亮度的对应关系得到，可以理解的是，在后续实施例中，由电压值得到亮度值，或由亮度值得到电压值皆可由显示面板的伽马曲线得到。
此外，还需获取显示面板接收的初始电压值以及初始电压值对应的初始亮度值，其中，可以通过相机采集三基色中各单基色对应的单色亮度数据(即初始亮度值)，然后根据初始亮度值、初始电压值、目标亮度值以及目标电压值分别计算各像素单元的初始补偿值，由于显示面板中像素单元的初始补偿值较多，为例节省存储空间，可选取部分像素单元的初始补偿值进行存储，而其他像素单元内的补偿值可通过线性插值计算得到，以对显示面板中的各像素单元进行初次补偿。可以理解的是，上述初次补偿过程中，可参照常规工艺实现，在此不再赘述。
S20、获取功能显示子区内各像素单元的实际灰阶值以及实际亮度值。
在对显示面板中各像素单元进行初次补偿之后，获取功能显示子区内各像素单元的实际灰阶值以及实际亮度值，其中，功能显示子区内各像素单元的实际亮度值可通过相机等设备进行获取。
S30、根据功能显示子区内各像素单元的目标亮度值、实际灰阶值以及实际亮度值，确定功能显示子区内各像素单元的二次补偿值，并对功能显示子区内各像素单元进行二次补偿。
根据功能显示子区内各像素单元的目标亮度值、实际亮度值以及实际灰阶 值，确定功能显示子区内各像素单元的补偿因子。
其中，当目标亮度值小于或等于预设亮度阈值时，则判断显示面板处于第一显示模式。
根据功能显示子区内各像素单元的实际亮度值以及实际灰阶值在补偿因子数据库中确定功能显示子区内各像素单元的补偿因子，其中，补偿因子数据库包括多组光学参数，且一组光学参数对应一补偿因子。
具体地，补偿因子数据库中，每组光学参数包括一参考亮度值和一参考灰阶值，且根据每个像素单元的实际亮度值和实际灰阶值获取对应的补偿因子。
如下表1所示，为本申请实施例提供的补偿因子数据库查找表，需要说明的是，下表中的数据仅用于举例说明补偿过程，其中，通过对样品显示面板进行调试，在不同的灰阶值和亮度值下选用多个补偿因子进行补偿，以得到不同灰阶值和对应亮度值下的补偿因子。
表1补偿因子数据库查找表
Figure PCTCN2021139565-appb-000003
对于未在调试中选用的灰阶值和亮度值，可采用线性插值计算得到。
例如，当需要获取亮度值为80nit且灰阶值为60灰阶时的补偿因子时，可先计算当亮度值为80nit时，48灰阶与96灰阶对应的补偿因子：
48灰阶对应的补偿因子：(36-50)/(100-10)*(80-10)+50≈39.1；
96灰阶对应的补偿因子：(30-45)/(100-10)*(80-10)+45≈33.3。
进而60灰阶对应的补偿因子为：(33.3-39.1)/(96-48)*(60-48)+39.1＝37.65，由以上计算过程可以得出，亮度值为80nit且灰阶值为60灰阶时对应的补偿依着你为37.65。
需要说明的是，在本申请实施例中，第一显示模式下，各像素单元的目标亮度值小于或等于200nit，而在本申请的其他实施例中，也可采用各像素单元的实际亮度值作为判断标准，或采用实际亮度值与目标亮度值的加权值作为判 断标准，在此不作限定。
可选的，在第一显示模式下，各像素单元的实际灰阶值还需要小于或等于196灰阶；进一步地，第一显示模式可为PWM调光模式。
其中，当目标亮度值大于预设亮度阈值时，则判断显示面板处于第二显示模式，即当目标亮度值大于200nit时，显示面板处于第二显示模式。
此时，补偿因子为0。
进一步地，根据功能显示子区内各像素单元的目标亮度值、实际亮度值以及实际灰阶值，确定功能显示子区内各像素单元的补偿基数；
其中，功能显示子区内各像素单元的补偿基数的计算公式为：
Figure PCTCN2021139565-appb-000004
其中，N为功能显示子区内各像素单元的补偿基数，A为功能显示子区内各像素单元的目标亮度值，B为功能显示子区内各像素单元的实际亮度值，C为功能显示子区内各像素单元的实际灰阶值。
通过上述各像素单元的补偿基数的计算公式，得到功能显示子区内各像素单元的补偿基数。
最后，根据功能显示子区内各像素单元的补偿因子与补偿基数确定功能显示子区内各像素单元的补偿电压值，即二次补偿值。
其中，功能显示子区内各像素单元的二次补偿值的计算公式为：
M＝NX
其中，M为功能显示子区内各像素单元的二次补偿值，N为功能显示子区内各像素单元的所述补偿基数，X为功能显示子区内各像素单元的补偿因子。
即将上述实施例中得到的功能显示子区内各像素单元的补偿因子与补偿基数相乘，以得到功能显示子区内各像素单元的二次补偿值，并对功能显示子区内的各像素单元进行二次补偿。
需要说明的是，在本申请实施例中，在第一显示模式下，可计算得到各像素单元的补偿因子，而在第二显示模式下，各像素单元的补偿因子为0，即本申请实施例提供的显示面板的mura补偿方法可根据显示面板的显示模式进行二次补偿，以根据实际需求进行补偿，以改善相关技术中在低亮度模式下摄像 头区域容易出现显示不均的现象。
在本申请的一种实施例中，可在多个显示面板中选取一个作为样品，然后通过上述实施例中记载的补偿方法，获取显示面板中各像素单元的初始补偿值以及功能显示子区内各像素单元的二次补偿值，并将显示面板中各像素单元的初始补偿值以及功能显示子区内各像素单元的二次补偿值烧录至显示面板的驱动模组中，且通过该样品计算得到的初始补偿值和二次补偿值可作为公版补偿数据，并烧录至其他显示面板的驱动模组中，进行补偿。
在本申请的另一种实施例中，可针对每一个显示面板，通过上述实施例中记载的补偿方法，获取每一个显示面板中各像素单元的初始补偿值以及功能显示子区内各像素单元的二次补偿值，并将每一个显示面板中各像素单元的初始补偿值以及功能显示子区内各像素单元的二次补偿值烧录至该显示面板的驱动模组中，即本实施例中根据每一显示面板获取其专有的补偿数据，并烧录至其驱动模组中，进行补偿。
承上，在本申请实施例中，显示面板接收初始显示数据，其中包括各像素单元的初始电压值，然后采用已经烧录的初始补偿值对各像素单元的初始电压值进行初次补偿；接着判断显示面板的显示模式，当显示面板处于第一显示模式时，采用已经烧录的二次补偿值对功能显示子区内各像素单元进行二次补偿。
此外，若显示面板处于第二显示模式时，则二次补偿值为0。
在对各像素单元的初始电压值进行初次补偿以及二次补偿之后，可将补偿之后的数据进行输出，以进行显示。
综上所述，在相关技术中，由于摄像头区域周围设置有阳极引线等驱动线路，连接不同位置像素的阳极引线长短不同且负载也不相同，容易使得显示面板在摄像头区域形成显示不均的现象，如图3所示。而本申请实施例通过对功能显示子区进行二次补偿，以有效改善功能显示子区内的显示不均现象，如图4所示，即表明本申请实施例提供的显示面板的mura补偿方法可以有效提高显示面板的显示均一性和显示效果。且在检测条件为120Hz、10.8nit(L32)下检测得到图3以及图4所示的显示图像。
另外，本申请实施例还提供一种显示面板，且该显示面板包括显示区，显示区包括常规显示子区以及与常规显示子区邻接的功能显示子区，需要说明的 是，在本申请实施例中，功能显示子区可以为感光区域，例如摄像头区域。
在本申请实施例中，功能显示子区包括中间区域以及围绕中间区域设置的亮环区域，其中，该显示面板还包括设置于亮环区域内的第一像素单元以及设置于中间区域内的第二像素单元。
需要说明的是，为提高功能显示子区的透光率，功能显示子区内的第一像素单元与第二像素单元对应的晶体管等器件皆设置于功能显示子区以外，可围绕功能显示子区设置，并通过走线将功能显示子区以外的晶体管等器件与功能显示子区以内的第一像素单元、第二像素单元电连接，以对第一像素单元与第二像素单元加载电压，实现其发光功能。
在显示驱动过程中，当第一像素单元的亮度与第二像素单元的亮度相同时，加载于第一像素单元的驱动电压高于加载于第二像素单元的驱动电压。
可选的，加载于第一像素单元的驱动电压大于或等于1V，且小于或等于6.8V；加载于第二像素单元的驱动电压大于或等于1V，且小于或等于6.8V。
本申请实施例提供的显示面板通过上述实施例中的mura补偿方法进行补偿，以改善显示面板中功能显示子区内容易出现显示不均的现象，提高显示面板的显示均一性和显示效果。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种显示面板的mura补偿方法及显示面板进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种显示面板的mura补偿方法，所述显示面板包括显示区，所述显示区包括常规显示子区以及与所述常规显示子区邻接的功能显示子区，且所述显示面板的mura补偿方法包括：
    获取所述显示面板中各像素单元的目标亮度值以及达到所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿；
    获取所述功能显示子区内各所述像素单元的实际灰阶值以及实际亮度值；
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际灰阶值以及所述实际亮度值，确定所述功能显示子区内各所述像素单元的二次补偿值，并对所述功能显示子区内各所述像素单元进行二次补偿。
  2. 根据权利要求1所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际灰阶值以及所述实际亮度值，确定所述功能显示子区内各所述像素单元的二次补偿值，并对所述功能显示子区内各所述像素单元进行二次补偿的步骤，包括：
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子；
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数；
    根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值。
  3. 根据权利要求2所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子的步骤，包括：
    当所述目标亮度值小于或等于一预设亮度阈值时；
    根据所述功能显示子区内各所述像素单元的所述实际亮度值以及所述实际灰阶值在补偿因子数据库中确定所述功能显示子区内各所述像素单元的所 述补偿因子，其中，所述补偿因子数据库包括多组光学参数，且一组所述光学参数对应一所述补偿因子。
  4. 根据权利要求3所述的显示面板的mura补偿方法，其中，所述预设亮度阈值为200nit。
  5. 根据权利要求3所述的显示面板的mura补偿方法，其中，每一组所述光学参数皆包括一预设亮度值和一预设灰阶值。
  6. 根据权利要求3所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子的步骤，还包括：
    当所述目标亮度值大于所述预设亮度阈值时；
    所述功能显示子区内各所述像素单元的所述补偿因子为0。
  7. 根据权利要求6所述的显示面板的mura补偿方法，其中，所述预设亮度阈值为200nit。
  8. 根据权利要求2所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数的步骤，包括：
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值确定所述功能显示子区内各所述像素单元的所述补偿基数的公式为：
    Figure PCTCN2021139565-appb-100001
    其中，N为所述功能显示子区内各所述像素单元的所述补偿基数，A为所述功能显示子区内各所述像素单元的所述目标亮度值，B为所述功能显示子区内各所述像素单元的所述实际亮度值，C为所述功能显示子区内各所述像素单元的所述实际灰阶值。
  9. 根据权利要求2所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述 功能显示子区内各所述像素单元的二次补偿值的步骤，包括：
    根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值的公式为：
    M＝NX
    其中，M为所述功能显示子区内各所述像素单元的所述二次补偿值，N为所述功能显示子区内各所述像素单元的所述补偿基数，X为所述功能显示子区内各所述像素单元的所述补偿因子。
  10. 根据权利要求1所述的显示面板的mura补偿方法，其中，所述获取所述显示面板中各像素单元的目标亮度值以及所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿的步骤，包括：
    获取所述显示面板接收的各所述像素单元的初始电压值以及与所述初始电压值对应的初始亮度值；
    根据所述显示面板中各所述像素单元的所述初始电压值、所述初始亮度值、所述目标亮度值以及所述目标电压值获取各所述像素单元的初次补偿值，以对各所述像素单元进行初次补偿。
  11. 一种显示面板的mura补偿方法，所述显示面板包括显示区，所述显示区包括常规显示子区以及与所述常规显示子区邻接的功能显示子区，且所述显示面板的mura补偿方法包括：
    获取所述显示面板中各像素单元的目标亮度值以及达到所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿；
    获取所述功能显示子区内各所述像素单元的实际灰阶值以及实际亮度值；
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际灰阶值以及所述实际亮度值，确定所述功能显示子区内各所述像素单元的二次补偿值，并对所述功能显示子区内各所述像素单元进行二次补偿；
    其中，对所述功能显示子区内各所述像素单元进行二次补偿包括以下步骤：
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子；
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮 度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数；
    根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值。
  12. 根据权利要求11所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子的步骤，包括：
    当所述目标亮度值小于或等于一预设亮度阈值时；
    根据所述功能显示子区内各所述像素单元的所述实际亮度值以及所述实际灰阶值在补偿因子数据库中确定所述功能显示子区内各所述像素单元的所述补偿因子，其中，所述补偿因子数据库包括多组光学参数，且一组所述光学参数对应一所述补偿因子。
  13. 根据权利要求12所述的显示面板的mura补偿方法，其中，每一组所述光学参数皆包括一预设亮度值和一预设灰阶值。
  14. 根据权利要求12所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿因子的步骤，还包括：
    当所述目标亮度值大于所述预设亮度阈值时；
    所述功能显示子区内各所述像素单元的所述补偿因子为0。
  15. 根据权利要求14所述的显示面板的mura补偿方法，其中，所述预设亮度阈值为200nit。
  16. 根据权利要求11所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值，确定所述功能显示子区内各所述像素单元的补偿基数的步骤，包括：
    根据所述功能显示子区内各所述像素单元的所述目标亮度值、所述实际亮度值以及所述实际灰阶值确定所述功能显示子区内各所述像素单元的所述补 偿基数的公式为：
    Figure PCTCN2021139565-appb-100002
    其中，N为所述功能显示子区内各所述像素单元的所述补偿基数，A为所述功能显示子区内各所述像素单元的所述目标亮度值，B为所述功能显示子区内各所述像素单元的所述实际亮度值，C为所述功能显示子区内各所述像素单元的所述实际灰阶值。
  17. 根据权利要求11所述的显示面板的mura补偿方法，其中，所述根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值的步骤，包括：
    根据所述功能显示子区内各所述像素单元的所述补偿因子与所述补偿基数确定所述功能显示子区内各所述像素单元的二次补偿值的公式为：
    M＝NX
    其中，M为所述功能显示子区内各所述像素单元的所述二次补偿值，N为所述功能显示子区内各所述像素单元的所述补偿基数，X为所述功能显示子区内各所述像素单元的所述补偿因子。
  18. 根据权利要求11所述的显示面板的mura补偿方法，其中，所述获取所述显示面板中各像素单元的目标亮度值以及所述目标亮度值对应的目标电压值，并对各所述像素单元进行初次补偿的步骤，包括：
    获取所述显示面板接收的各所述像素单元的初始电压值以及与所述初始电压值对应的初始亮度值；
    根据所述显示面板中各所述像素单元的所述初始电压值、所述初始亮度值、所述目标亮度值以及所述目标电压值获取各所述像素单元的初次补偿值，以对各所述像素单元进行初次补偿。
  19. 一种显示面板，所述显示面板包括显示区，所述显示区包括常规显示子区以及与所述常规显示子区邻接的功能显示子区，所述功能显示子区包括中间区域以及围绕所述中间区域设置的亮环区域；
    所述显示面板包括设置于所述亮环区域内的第一像素单元以及设置于所述中间区域内的第二像素单元；
    其中，当所述第一像素单元的亮度与所述第二像素单元的亮度相同时，加载于所述第一像素单元的驱动电压高于加载于所述第二像素单元的驱动电压。
  20. 根据权利要求19所述的显示面板，其中，加载于所述第一像素单元的驱动电压大于或等于1V，且小于或等于6.8V；
    加载于所述第二像素单元的驱动电压大于或等于1V，且小于或等于6.8V。
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