CN114495796A - Brightness uneven compensation method and device, electronic device and storage medium - Google Patents

Abstract

The present application discloses a brightness unevenness compensation method and its device, electronic equipment and storage medium. The method for compensating for uneven brightness includes: acquiring first brightness compensation data of a plurality of preset areas in a display panel; performing a first uneven brightness compensation on the display panel according to the first brightness compensation data; and if there is uneven brightness in the preset area In the case of sub-regions, obtain the second brightness compensation data of the sub-regions with uneven brightness; store the second brightness compensation data in the flash memory of the display panel in a preset coding format; perform second brightness compensation on the display panel according to the second brightness compensation data; Uneven compensation. The brightness unevenness compensation method and device, electronic device and storage medium of the present application can eliminate the brightness unevenness points in the display panel that are relatively fine and have small transition areas by performing brightness compensation on the display panel twice, and reduce the brightness unevenness caused by the brightness unevenness. Do not cause the problem of display panel defects, and improve the product yield of display panels.

Description

Brightness uneven compensation method and device, electronic device and storage medium

technical field

The present application relates to the field of display technology, and in particular, to a method and device for compensating for uneven brightness, an electronic device and a storage medium.

Background technique

The current De-Mura technology outputs grayscale images through an image generator (Pattern Generator, PG), the camera captures the panel semi-finished products (Open Cell, OC) to output image information, and the host divides the image information into 8* After the calculation of 8 or 16*16 pixels, the compensation is interpolated to each 8*8 or 16*16 pixel through the average brightness comparison, the compensation data is written into the X-PCBA flash memory chip, and the timing controller chip (Timing ControlIntegratedCircuit, TCON) is reset. IC), TCON IC re-reads the compensation data and outputs the compensated grayscale image. The camera collects the OC output image information again, and determines whether the image quality after compensation meets the specifications. If the image quality after compensation meets the specifications, complete the De-Mura program; if the image quality after compensation does not meet the specifications, recalculate the process of writing the compensation data and resetting the TCON IC.

The above method can improve the slight brightness unevenness, but it cannot improve the brightness unevenness of particularly fine points in the brightness unevenness and only 1-2 pixels in the transition area.

SUMMARY OF THE INVENTION

In view of this, the present invention aims to solve one of the problems in the related art at least to a certain extent. Therefore, the purpose of the present application is to provide a brightness unevenness compensation method and its device, electronic device and storage medium.

Embodiments of the present application provide a method for compensating for uneven brightness. The method for compensating for uneven brightness includes: acquiring first brightness compensation data of a plurality of preset areas in a display panel; performing a first uneven brightness compensation on the display panel according to the first brightness compensation data; In the case of a sub-region with uneven brightness in the region, obtain second brightness compensation data of the sub-region with uneven brightness; store the second brightness compensation data in the flash memory of the display panel in a preset encoding format; A second luminance unevenness compensation is performed on the display panel according to the second luminance compensation data.

In some implementation manners, the acquiring the first brightness compensation data of multiple preset areas in the display panel includes: acquiring a first brightness image of the display panel displaying a preset picture; comparing the first brightness image in the first brightness image brightness uniformity within a plurality of the preset areas; determining the first brightness compensation data of the multiple preset areas through interpolation compensation.

In some implementation manners, in the case that a sub-region with uneven brightness exists in the preset region, acquiring the second brightness compensation data of the sub-region with uneven brightness includes: performing a first brightness measurement on the display panel In the case of uneven compensation, acquiring a second brightness image of the display panel displaying a preset picture; comparing the brightness uniformity of each preset area in the second brightness image; In the case of the luminance uneven sub-region, the second luminance compensation data of the luminance uneven sub-region is determined.

In some embodiments, the preset encoding format includes a data header, a compensation amount, a current compensation sequence number, compensation precision, position information, size, compensation data, a check value, and a data tail.

In some embodiments, the acquiring the second luminance compensation data of the sub-region with uneven luminance includes: determining the compensation data according to the compensation precision and the size.

In some implementation manners, performing the second brightness unevenness compensation on the display panel according to the second brightness compensation data includes: acquiring saved data from the flash memory through a timing controller; parsing the saved data obtaining the second brightness compensation data; and performing the second uneven brightness compensation on the display panel according to the second brightness compensation data.

In some embodiments, the method for compensating for uneven brightness includes: erasing data in the flash memory and re-determining the second brightness compensation if the second compensation for uneven brightness does not satisfy a compensation condition data.

The present application also provides a device for compensating for uneven brightness. The brightness uneven compensation device includes: an acquisition module, a first compensation module, a second compensation data acquisition module, a storage module and a second compensation module. The acquisition module is used for acquiring first brightness compensation data of a plurality of preset regions in the display panel; the first compensation module is used for performing a first uneven brightness compensation on the display panel according to the first brightness compensation data ; the second compensation module is used to obtain the second brightness compensation data of the uneven brightness sub-region under the condition that there is a sub-region with uneven brightness in the preset region; the storage module is used to store the The second brightness compensation data is stored in the flash memory of the display panel in a preset encoding format; the second compensation module is configured to perform second uneven brightness compensation on the display panel according to the second brightness compensation data.

The present application also provides an electronic device. The electronic device includes a processor and a memory, the memory stores a computer program, and when the computer program is executed by the processor, implements the method for compensating for uneven brightness in any one of the foregoing embodiments.

The present application also provides a non-volatile computer-readable storage medium containing the computer program. When the computer program is executed by one or more processors, the processor is caused to execute the luminance unevenness compensation method described in any one of the above embodiments.

The brightness unevenness compensation method and device, electronic device and storage medium of the present application can eliminate the brightness unevenness points in the display panel that are relatively fine and have small transition areas by performing brightness compensation on the display panel twice, and reduce the brightness unevenness caused by the brightness unevenness. Do not cause the problem of display panel defects, and improve the product yield of display panels.

Additional aspects and advantages of the present application will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic diagram of luminance unevenness in a conventional display panel;

FIG. 2 is a schematic diagram of a structure mechanism of a defective display panel in the prior art;

3 is a schematic flowchart of a method for compensating for uneven brightness according to some embodiments of the present application;

4 is a schematic structural diagram of a luminance unevenness compensation device according to some embodiments of the present application;

5 is a schematic structural diagram of a module connection of a tool used in a method for compensating for uneven brightness according to some embodiments of the present application;

6 is a schematic flowchart of a method for compensating for uneven brightness according to some embodiments of the present application;

7 is a schematic flowchart of a method for compensating for uneven brightness according to some embodiments of the present application;

8 is a schematic flowchart of a method for compensating for uneven brightness according to some embodiments of the present application;

9 is a schematic flowchart of a method for compensating for uneven brightness according to some embodiments of the present application;

10 is a schematic flowchart of a method for compensating for uneven brightness according to some embodiments of the present application;

11 is a schematic structural diagram of a luminance unevenness compensation device according to some embodiments of the present application;

FIG. 12 is a schematic structural diagram of an electronic device according to some embodiments of the present application.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present application, and should not be construed as a limitation on the present application.

In the description of the present application, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of this application, "plurality" means two or more, unless expressly and specifically defined otherwise.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the application. Furthermore, this application may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present application, and should not be construed as a limitation on the present application.

Please refer to Figure 1. The brightness unevenness of the display panel is divided into whole screen and block unevenness (Mura). The whole screen unevenness (Mura) can be compensated by conventional brightness unevenness (De- Mura) technology is eliminated, and the block uneven point (Mura) is still visible, that is, the display panel has the phenomenon of product failure.

It is understandable that the failure mechanism of the display panel is: as shown in Figure 2, during the glass substrate manufacturing process, the entire glass substrate is supported by the support pins, and then block exposure is performed. The glass flatness and exposure time of each block are , mask splicing, etc. have certain errors, resulting in block Mura, such as PIN Mura, FDV Mura, etc.

Referring to FIG. 3 , the present application provides a method for compensating for uneven brightness. The brightness uneven compensation method includes:

01: Acquire the first brightness compensation data of multiple preset areas in the display panel;

02: Performing a first uneven brightness compensation on the display panel according to the first brightness compensation data;

03: In the case that a sub-region with uneven brightness exists in the preset region, obtain second brightness compensation data of the sub-region with uneven brightness;

04: Store the second brightness compensation data in the flash memory of the display panel in a preset encoding format;

05: Perform second uneven brightness compensation on the display panel according to the second brightness compensation data.

Please refer to FIG. 4 , the present application also provides an apparatus 10 for compensating for uneven brightness. The luminance uneven compensation device 10 includes: an acquisition module 11 , a first compensation module 12 , a second compensation data acquisition module 13 , a storage module 14 and a second compensation module 15 . The acquisition module 11 is used for acquiring first brightness compensation data of multiple preset areas in the display panel; the first compensation module 12 is used for performing the first uneven brightness compensation on the display panel according to the first brightness compensation data; the second compensation module 13 for obtaining the second brightness compensation data of the uneven brightness sub-region in the case of a sub-region with uneven brightness in the preset region; the storage module 14 is used for storing the second brightness compensation data in the display panel in a preset encoding format The second compensation module 15 is configured to perform second uneven brightness compensation on the display panel according to the second brightness compensation data.

It can be understood that the tools used in the uneven brightness compensation method of the present application mainly include a timing controller module (referred to as a TCON module) for eliminating uneven brightness (De-Mura), an OC module (Flash), a display module), De-Mura device module (computer host (PC), pixel unit (PG), camera, programming tool), etc. The schematic diagram of the connection between modules is shown in Figure 5.

Specifically, the multiple preset areas in the display panel can be understood as forming multiple preset areas in the display panel by performing compression at an area interval of 8*8 pixels. Taking the resolution of the display panel as 1920*1080 as an example, the display panel is compressed with a preset area interval of 8*8 pixels to form 240*135 preset areas, where 1920/8=240, 1080/8= 135. It should be noted that the resolution of the display panel may also be other values, which are not limited here.

The first brightness compensation data is the brightness compensation data of the entire display panel in the above-mentioned 240**135 preset areas. The first brightness uneven compensation can be performed on the entire display panel based on the conventional brightness uneven compensation (De-Mura) technology, which is the first time the entire display panel is subjected to the entire brightness uneven compensation.

Then, after the first uneven brightness compensation, there is a sub-region of uneven brightness in the preset area, that is, after the display panel is compensated for uneven brightness of the whole screen, a certain preset area of the display panel (8*8 pixel area) still has the phenomenon of uneven brightness, forming a sub-region of uneven brightness. In this case, the second brightness compensation data of the sub-region with uneven brightness can be acquired, the second brightness compensation data can be stored in the flash memory of the display panel in a preset coding format, and the second brightness unevenness can be performed on the display panel according to the second brightness compensation data. Compensation, that is, after the first block-wise compensation for the uneven brightness of the display panel, the second time the block-wise compensation for the uneven brightness of the display panel is performed.

The second luminance compensation data is luminance compensation data in one or more sub-areas (8*8 pixel areas) with uneven luminance. At this time, an area coordinate system is formed with 240 areas extending in the row direction and 135 areas extending in the column direction. The area coordinates are (3, 3) representing the intersection of the third area in the row direction and the third area in the column direction. The location of the sub-region can be used to determine the positions of multiple sub-regions with uneven brightness, so as to obtain the second brightness compensation data.

The preset coding format includes data header, compensation quantity, current compensation serial number, compensation precision, position information, size, compensation data, check value and data tail.

In detail, the data header is, for example, 1 byte, which is represented as: 0xAA in hexadecimal format of computer language.

The compensation amount refers to the number of uneven brightness point area blocks (Mura). The compensation amount is, for example, 1 byte. For example, it is expressed as 0x03 in the hexadecimal method of computer language, which means 3 area blocks.

For example, the current compensation serial number is: 1byte. For example, it is expressed as: 0x01 in the hexadecimal method of computer language, which means the first area block of uneven brightness point to be compensated. Of course, the current compensation serial number will not be greater than the compensation amount. number.

The compensation precision is for example: 1byte, high 4bits horizontal precision, low 4bits vertical precision, for example, expressed in hexadecimal format of computer language: 0x21, which means 2 pixels horizontally and 1 pixel vertically.

For example, the position information is: 4bytes, high 2bytes horizontal coordinates, low 2bytes vertical coordinates, such as the hexadecimal representation in computer language: 0x00, 0xf4, 0x01, 0x33, which means that the compensation starting coordinates are (244,307).

For example, the size is: 1byte, high 4bits horizontal size, low 4bits vertical size, such as expressed in hexadecimal format in computer language: 0xAC, which means the uneven brightness compensation area block of 10 pixels horizontally and 12 pixels vertically. For small size, the transition area has only 1 to 2 pixels (pixel) of uneven brightness (Mura), such as PIN Mura, which is smaller than the regular De-Mura 8*8Block size, you can also do 1*1or for this Mura 2*2 or 4*4 pixel compensation; for vertical Mura, such as FDV Mura, the pixel size of the horizontal transition area is small, you can also do 1*8 or 2*8 pixel compensation for this Mura.

After fine De-Mura compensation is performed on the uneven brightness points of the transition area with a smaller size, the Mura phenomenon smaller than the brightness uneven area block (Full Panel De-Mura) (8*8) in the whole screen can be eliminated, thereby improving the display. Bad Mura phenomenon in the panel.

The compensation data may be, for example, 40 bytes. The compensation data is a data set that needs to be compensated for the uneven luminance compensation area block in the second luminance compensation data.

The check value is the 2-7 check sum (CeckSum) of the current luminance uneven compensation data, 1 byte.

For example, the data tail is 1byte, which is expressed as: x55 in hexadecimal format of computer language.

The brightness unevenness compensation method of the present application can eliminate the brightness unevenness point in the display panel that is relatively fine and with a small transition area by performing brightness compensation on the display panel twice, reduce the problem of display panel defects caused by the brightness unevenness point, and improve the performance of the display panel. Product yield of display panels.

Referring to Figure 6, step 01 includes:

011: Acquire a first brightness image of the display panel displaying the preset image;

012: Compare the brightness uniformity in the plurality of preset regions in the first brightness image;

013: Determine first brightness compensation data of multiple preset regions through interpolation compensation.

Please refer to FIG. 4 , step 011 , step 012 and step 013 may be implemented by the obtaining module 11 . That is, the acquisition module 11 is used to acquire the first brightness image of the preset screen displayed by the display panel; compare the brightness uniformity in the multiple preset areas in the first brightness image; determine the first brightness of the multiple preset areas through interpolation compensation. a luminance compensation data.

Specifically, first, a computer (Personal Computer, PC) can control the pixel unit PG in the display panel to generate a preset image, that is, a Mura compensation specific image, the display panel displays a corresponding image, that is, the first brightness image, and the camera shoots the first image. After the brightness image is transmitted to the computer host.

Then, the first brightness image is subjected to full-screen brightness uneven compensation (FullPanel De-Mura) and 8*8 pixel regional segmentation processing on the first brightness image, and the composition of each 8*8 pixel area in the first brightness image is compared. The brightness uniformity of the plurality of preset regions is obtained, and then interpolation compensation is performed to make the brightness of the first brightness image uniform, and then the first brightness compensation data is obtained and saved.

Referring to Figure 7, step 03 includes:

031: In the case that the display panel performs the first uneven brightness compensation, acquire a second brightness image of the display panel displaying the preset image;

032: Compare the brightness uniformity of each preset area in the second brightness image;

033: In the case that a sub-region with uneven brightness exists in the preset region, determine the second brightness compensation data of the sub-region with uneven brightness.

Please refer to FIG. 4 , step 031 , step 032 and step 033 may be implemented by the second compensation data acquisition module 13 . That is, the second compensation data acquisition module 13 is configured to acquire a second brightness image of the display panel displaying a preset picture when the display panel performs the first uneven brightness compensation; compare each preset brightness image in the second brightness image. The brightness uniformity of the region; in the case of a sub-region with uneven brightness in the preset region, determine the second brightness compensation data of the sub-region with uneven brightness.

Specifically, when the display panel performs the first brightness unevenness compensation, a second brightness image of the display panel displaying the preset picture is acquired, that is, based on the first brightness unevenness compensation for the display panel , a second brightness image with block-like brightness unevenness in the display panel can be obtained.

Then, the brightness uniformity of each preset region in the second brightness image is compared, and in the case of a sub-region with uneven brightness in the preset region, second brightness compensation data of the sub-region with uneven brightness is determined.

Understandably, taking a display panel with a resolution of 1920*1080 as an example, as mentioned above, 240 areas can be extended in the row direction and 135 areas can be extended in the column direction to form a regional coordinate system. Therefore, the transition area is small. m*n of the uneven brightness point, where m refers to the abscissa of the uneven brightness point that needs to be refined, and n refers to the ordinate of the uneven brightness point that needs to be refined.

Wherein, the position data and the luminance data of all the uneven luminance points that need to be refined are the second luminance compensation data.

Therefore, the brightness unevenness compensation method of the present application can realize the refined brightness unevenness compensation (De-Mura) after the whole-screen brightness unevenness compensation (Full Panel De-Mura compensation) is performed on the display panel. The refined brightness unevenness compensation is to perform m*n (m, n=1, 2, 3...) fine brightness unevenness compensation for the small brightness unevenness points (Mura) in the transition area, and the method is simple.

Referring to Figure 8, step 03 includes:

034: Determine the compensation data according to the compensation accuracy and size.

Please refer to FIG. 4 , step 034 can be implemented by the second compensation data acquisition module 13 . That is, the second compensation data acquisition module 13 is configured to determine compensation data according to compensation precision and size.

Specifically, the size of the compensation data is determined by the size and precision of the uneven brightness compensation area block. For example, the precision of the uneven brightness compensation area block is 0x12 and the size is 0xA8, then the size of the compensation data is 10*(8/2) =40byte.

Referring to Figure 9, step 05 includes:

051: Obtain the saved data from the flash memory through the timing controller;

052: Parse the saved data to obtain the second brightness compensation data;

053: Perform a second uneven brightness compensation on the display panel according to the second brightness compensation data.

Please refer to FIG. 4 , step 051 , step 052 and step 053 can be implemented by the second compensation module 15 . That is, the second compensation module 15 is used for obtaining saved data from the flash memory through the timing controller; parsing the saved data to obtain second luminance compensation data; and performing second luminance uneven compensation on the display panel according to the second luminance compensation data.

Specifically, the timing controller (Timing Control, TCON) reads the saved data from the specified position of the flash memory (XPCBA Flash), and parses the saved data according to the encoding format to obtain the second brightness compensation data, which can avoid misreading and missing reading of the compensation data, To achieve uneven brightness point (Mura) compensation according to the phenomenon.

Please refer to Figure 10, the brightness uneven compensation method includes:

06: In the case that the second luminance uneven compensation does not satisfy the compensation condition, erase the data in the flash memory and re-determine the second luminance compensation data.

Referring to FIG. 11 , the luminance unevenness compensation apparatus 10 includes a second compensation data re-determination module 16 .

Step 06 may be implemented by the second compensation data re-determination module 16 . That is, the second compensation data re-determination module 16 is configured to erase the data in the flash memory and re-determine the second luminance compensation data when the second luminance uneven compensation does not satisfy the compensation condition.

Specifically, the computer (PC) of the present application can compare the pixel brightness of the second brightness image with the standard pixel brightness of the pixels to be subjected to brightness compensation, and determine whether the second brightness uneven compensation satisfies the compensation conditions, if the second brightness uneven If the compensation satisfies the compensation condition, the program is exited. If the second luminance uneven compensation does not satisfy the compensation condition, the data in the flash memory is erased and the second luminance compensation data is re-determined. In this way, the above steps are repeated until the second luminance compensation data satisfying the compensation condition is determined.

Please refer to FIG. 12 , the present application further provides an electronic device 100 . The electronic device 100 includes a processor 110 and a memory 120. The memory 120 stores a computer program 121. When the computer program 121 is executed by the processor 10, the brightness unevenness compensation method described in any one of the foregoing embodiments is implemented. The electronic device 100 includes smart devices with a display panel, such as a mobile phone, a computer, and an ipad.

The electronic device 100 of the present application can eliminate uneven brightness points in the display panel that are relatively fine and have a small transition area by performing brightness compensation on the display panel twice, reduce the problem of display panel defects caused by the uneven brightness points, and improve the display panel. product yield.

The present application also provides a non-volatile computer-readable storage medium containing a computer program, which, when the computer program is executed by one or more processors, causes the processor to perform the luminance unevenness compensation described in any one of the above embodiments method.

By performing brightness compensation on the display panel twice, the computer-readable storage medium of the present application can eliminate uneven brightness points in the display panel that are relatively fine and have a small transition area, reduce the problem of display panel defects caused by the uneven brightness points, and improve the performance of the display panel. Product yield of display panels.

The above examples only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. a brightness uneven compensation method, is characterized in that, comprises: acquiring first brightness compensation data of multiple preset regions in the display panel; performing a first uneven brightness compensation on the display panel according to the first brightness compensation data; In the case that a sub-region with uneven brightness exists in the preset region, acquiring second brightness compensation data of the sub-region with uneven brightness; storing the second brightness compensation data in the flash memory of the display panel in a preset encoding format; A second luminance unevenness compensation is performed on the display panel according to the second luminance compensation data. 2. The method for compensating for uneven brightness according to claim 1, wherein the acquiring the first brightness compensation data of a plurality of preset regions in the display panel comprises: acquiring a first brightness image of the display panel displaying a preset picture; comparing the luminance uniformity within a plurality of the preset regions in the first luminance image; The first luminance compensation data of the plurality of preset regions is determined through interpolation compensation. 3 . The method for compensating for uneven brightness according to claim 1 , wherein, in the case where a sub-region with uneven brightness exists in the preset region, second brightness compensation data of the sub-region with uneven brightness is obtained. 4 . ,include: When the display panel performs the first brightness unevenness compensation, acquiring a second brightness image of the display panel displaying a preset image; comparing the brightness uniformity of each of the preset regions in the second brightness image; When the sub-region with uneven brightness exists in the preset region, the second brightness compensation data of the sub-region with uneven brightness is determined. 4. The method for compensating for uneven brightness according to claim 1, wherein the preset coding format comprises a data header, a compensation amount, a current compensation serial number, compensation accuracy, position information, size, compensation data, and a checksum. value and tail of data. 5. The method for compensating for uneven brightness according to claim 4, wherein the acquiring the second brightness compensation data of the uneven brightness sub-region comprises: The compensation data is determined according to the compensation accuracy and the size. 6 . The brightness unevenness compensation method according to claim 1 , wherein the performing second brightness unevenness compensation on the display panel according to the second brightness compensation data comprises: 6 . Obtain and save data from the flash memory through the timing controller; Parsing the saved data to obtain the second brightness compensation data; The second luminance unevenness compensation is performed on the display panel according to the second luminance compensation data. 7. The method for compensating for uneven brightness according to claim 1, wherein the method for compensating for uneven brightness comprises: If the second luminance uneven compensation does not satisfy the compensation condition, the data in the flash memory is erased and the second luminance compensation data is re-determined. 8. A device for compensating for uneven brightness, comprising: an acquisition module, the acquisition module is configured to acquire first brightness compensation data of a plurality of preset regions in the display panel; a first compensation module, configured to perform a first uneven brightness compensation on the display panel according to the first brightness compensation data; a second compensation data acquisition module, the second compensation module is configured to acquire second brightness compensation data of the sub-regions with uneven brightness when there is a sub-region with uneven brightness in the preset region; a storage module, configured to store the second brightness compensation data in the flash memory of the display panel in a preset encoding format; A second compensation module, configured to perform a second uneven brightness compensation on the display panel according to the second brightness compensation data. 9. An electronic device, characterized by comprising a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the brightness according to any one of claims 1-7 is realized Uneven compensation method. 10. A non-volatile computer-readable storage medium containing a computer program, wherein, when the computer program is executed by one or more processors, the processor is caused to perform any one of claims 1-7. The luminance unevenness compensation method described in one item.

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