Compensation method and device of display panel and computer readable storage medium

Abstract

The application discloses a compensation method and device of a display panel and a computer readable storage medium. The compensation method comprises the following steps: in response to the fact that the refresh rate of a first display area is different from the refresh rate of a second display area, obtaining a first display-related parameter of at least one sub-area in the first display area; determining a first compensation value corresponding to the first display-related parameter of at least one sub-area in the first display area according to a first compensation relationship corresponding to the at least one sub-area in the first display area; and performing compensation processing on the display-related parameter of a sub-pixel in the sub-area of the first display area by using the first compensation value corresponding to the sub-area of the first display area, so as to obtain a first target display-related parameter of the sub-pixel in the sub-area of the first display area. In this way, the brightness uniformity of the display panel can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a compensation method, compensation device, and computer-readable storage medium for a display panel. Background Technology

[0002] With the upgrading of display technology, the requirements for the refresh rate of display panels are getting higher and higher, and the scenarios for using display panels are becoming more diversified. The use of display panels in separate zones is gradually becoming the mainstream, but this also brings about the problem of poor display effect of display panels, affecting the user experience. Summary of the Invention

[0003] This application provides a compensation method, compensation device, and computer-readable storage medium for a display panel, which can improve the uneven brightness of the display panel.

[0004] The first aspect of this application provides a compensation method for a display panel. The compensation method includes: in response to a difference between the refresh rate of a first display area and the refresh rate of a second display area, obtaining first display-related parameters of at least one sub-region in the first display area; determining a first compensation value corresponding to the first display-related parameters of at least one sub-region of the first display area based on a first compensation relationship corresponding to the at least one sub-region of the first display area; and using the first compensation value corresponding to the sub-region of the first display area to perform compensation processing on the display-related parameters of sub-pixels in the sub-region of the first display area to obtain first target display-related parameters of sub-pixels in the sub-region of the first display area.

[0005] In one embodiment, a first display area and a second display area are arranged along a first direction. The first display area includes a first sub-region and a second sub-region arranged along the first direction. The first sub-region and the second display area are arranged adjacent to each other. The step of obtaining a first display-related parameter of at least one sub-region in the first display area includes: obtaining the first display-related parameter of the first sub-region.

[0006] Optionally, the step of obtaining first display-related parameters of at least one sub-region in the first display area further includes: obtaining first display-related parameters of a second sub-region.

[0007] Optionally, the first compensation relationship corresponding to the first sub-region and the second sub-region is different.

[0008] Optionally, the refresh rate of the second display area is higher than that of the first display area.

[0009] Optionally, the refresh rate of the second display area is 120Hz, and the refresh rate of the first display area is 60Hz.

[0010] Optionally, relevant parameters may be displayed, including grayscale values, data voltages, or gamma register values.

[0011] Optionally, the second display area includes a third sub-region and a fourth sub-region arranged along the first direction. The third sub-region is arranged adjacent to the first display area. The method further includes: obtaining second display-related parameters of the third sub-region; determining a second compensation value corresponding to the second display-related parameters of the third sub-region according to a second compensation relationship; and using the second compensation value to compensate the display-related parameters of the sub-pixels in the third sub-region to obtain the second target display-related parameters of the sub-pixels in the third sub-region.

[0012] Optionally, the step of obtaining the first display-related parameters of at least one sub-region in the first display area includes: obtaining the average value of the display-related parameters of the sub-pixels in the sub-region of the first display area to obtain the first display-related parameters of the sub-region in the first display area; or, obtaining the display-related parameters of the center sub-pixel of the sub-region in the first display area to obtain the first display-related parameters of the sub-region in the first display area.

[0013] In one embodiment, the method further includes: pre-illuminating all sub-pixels in the test panel using first test display-related parameters; measuring the display brightness of a first sub-region and a second sub-region respectively; generating a first target compensation value based on the brightness difference between the first and second sub-regions, and using the first target compensation value to compensate the display-related parameters of the sub-pixels in the first sub-region, so that the display brightness of the first sub-region is equal to or the difference between the display brightness of the second sub-region is reduced; generating a second target compensation value based on the second display brightness of the first display area measured after compensation and the third display brightness of the target sub-region in the second display area measured. This ensures that after compensating the display-related parameters of the sub-pixels in the first display area using the second target compensation value, the display brightness of the first display area is equal to or the difference between the display brightness and the target sub-region is reduced. The target sum of the first and second target compensation values ​​is determined as the first compensation value for the first sub-region, and the second target compensation value is determined as the first compensation value for the second sub-region. A first compensation relationship is established between the first and second sub-regions, where the first compensation relationship includes the correspondence between the display-related parameters of the first sub-region and the target sum value, and the first compensation relationship includes the correspondence between the display-related parameters of the second sub-region and the second target compensation value.

[0014] Optionally, the step of generating a first target compensation value based on the brightness difference between the first display brightness of the first sub-region and the second sub-region includes: converting the display brightness of the first sub-region into a corresponding first display grayscale value, and converting the display brightness of the second sub-region into a corresponding second display grayscale value; calculating a first grayscale difference between the first display grayscale value and the second display grayscale value; and determining a first target compensation value corresponding to the first grayscale difference based on a preset compensation table or a brightness grayscale conversion formula.

[0015] In one embodiment, the second display area includes a third sub-region and a fourth sub-region arranged along a first direction, the third sub-region being adjacent to the first display area, and the target sub-region being the fourth sub-region.

[0016] Optionally, after compensating the display-related parameters of the sub-pixels in the first sub-region using the first target compensation value, the method further includes: measuring the fourth display brightness of the third sub-region; and generating a third target compensation value based on the measured third and fourth display brightness of the target sub-region in the second display area, so that after compensating the display-related parameters of the sub-pixels in the third sub-region using the third target compensation value, the display brightness of the third sub-region is equal to or the difference between the display brightness of the target sub-region and the display brightness of the target sub-region is reduced.

[0017] In one embodiment, the second display area includes a third sub-region and a fourth sub-region, the third sub-region being adjacent to the first display area; after compensating the display-related parameters of the sub-pixels in the first display area using the second target compensation value, the method further includes: illuminating all sub-pixels in the test panel using the compensated display-related parameters; determining the color coordinates of the fourth sub-region, the first sub-region, and the second sub-region; determining the first chromaticity compensation matrix corresponding to the first sub-region based on the color coordinates of the fourth sub-region and the first sub-region, and determining the second chromaticity compensation matrix corresponding to the second sub-region based on the color coordinates of the fourth sub-region and the second sub-region.

[0018] In one embodiment, after compensating the display-related parameters of sub-pixels in the sub-region of the first display area using the first compensation value corresponding to the sub-region of the first display area, the method further includes: obtaining a chromaticity compensation matrix corresponding to at least one sub-region of the first display area; and compensating the first target display-related parameters of pixel units in the sub-region using the chromaticity compensation matrix corresponding to the sub-region.

[0019] Optionally, for the same sub-region of the first display area, the corresponding chromaticity compensation matrices are different for at least two display brightness levels or at least two grayscale values.

[0020] A second aspect of this application provides a compensation method for a display panel. The display panel includes an adjacent first display area and a second display area. The first display area includes a first main area and a first boundary area adjacent to the second display area, and / or the second display area includes a second main area and a second boundary area adjacent to the first display area. The method includes: compensating for display-related parameters of the first boundary area when the refresh rate of the first display area is different from the refresh rate of the second display area, and / or compensating for display-related parameters of the second boundary area.

[0021] In one embodiment, the compensation method of this application further includes: when the refresh rate of the first display area is less than the refresh rate of the second display area, performing differential compensation on the display-related parameters of the first main area and the first boundary area.

[0022] Optionally, relevant parameters may be displayed, including grayscale values, data voltages, or gamma register values.

[0023] Optionally, if the refresh rate of the first display area is different from that of the second display area, brightness and chromaticity compensation are performed on the display-related parameters of the first boundary area, and / or brightness and chromaticity compensation are performed on the display-related parameters of the second boundary area.

[0024] Optionally, if the refresh rate of the first display area is different from that of the second display area, brightness compensation and color compensation are performed on the display-related parameters of the first main area.

[0025] A third aspect of this application provides a compensation device, which includes a processor and a memory. The processor is coupled to the memory, and the memory stores program data. The processor executes the program data in the memory to implement the steps in the above method.

[0026] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that can be executed by a processor to implement the steps in the above-described method.

[0027] The beneficial effects are as follows: This application is for a first display area and a second display area with different refresh rates in a display panel. It obtains the first grayscale value of at least one sub-region in the first display area, determines the first compensation value corresponding to the first grayscale value according to a first compensation relationship, and uses the first compensation value to compensate the grayscale value of the sub-pixels in the sub-region. This can reduce the brightness difference between different sub-regions in the first display area, and / or reduce the brightness difference between the first display area and the second display area, thereby improving the brightness uniformity of the display panel. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0029] Figure 1 This is a flowchart illustrating the first embodiment of the display panel compensation method of this application;

[0030] Figure 2This is a schematic diagram illustrating the division of the display panel area in this application;

[0031] Figure 3 This is a flowchart illustrating the second embodiment of the display panel compensation method of this application;

[0032] Figure 4 This is a flowchart illustrating the third embodiment of the display panel compensation method of this application;

[0033] Figure 5 This is a flowchart illustrating one implementation of the compensation method for the display panel during the testing phase of this application.

[0034] Figure 6 yes Figure 5 A flowchart illustrating an implementation method for step S3000;

[0035] Figure 7 This is a flowchart illustrating another embodiment of the compensation method for the display panel during the testing phase of this application.

[0036] Figure 8 yes Figure 5 A flowchart illustrating one embodiment of the compensation method following step S6000;

[0037] Figure 9 This is a schematic diagram of one embodiment of the compensation device of this application;

[0038] Figure 10 This is a schematic diagram of one embodiment of the computer-readable storage medium of this application. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] It should be noted that the terms "first" and "second" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0041] Combination Figure 1 and Figure 2 This application provides a compensation method for a display panel 10, which can be applied during user use. The compensation method includes:

[0042] Step S100: In response to the difference between the refresh rate of the first display area A1 and the refresh rate of the second display area A2, obtain the first display-related parameters of at least one sub-area in the first display area A1.

[0043] Specifically, the difference between the refresh rate of the first display area A1 and the refresh rate of the second display area A2 means that the refresh rates of the first display area A1 and the second display area A2 are not equal. Optionally, the refresh rate of the first display area A1 is greater than the refresh rate of the second display area A2, or the refresh rate of the first display area A1 is less than the refresh rate of the second display area A2. For example, the refresh rate of the first display area A1 is 120Hz, and the refresh rate of the second display area A2 is 60Hz, or the refresh rate of the first display area A1 is 60Hz, and the refresh rate of the second display area A2 is 120Hz. Of course, the refresh rate of the display area can also be 144Hz, 30Hz, or 1Hz, etc., and this application does not impose any restrictions. The sub-region in the first display area A1 is a local area of ​​the first display area A1 or it can be the entire first display area A1. When the sub-region is a local area, for example, the sub-region can be the central area of ​​the first display area A1, or the edge area of ​​the first display area A1, or other areas located between the central area and the edge area. The driver chip in the display panel 10 can acquire the display-related parameters of each sub-pixel in the sub-region. The display-related parameters may include grayscale values, gamma register values, or data voltages, etc. Based on the display-related parameters of the sub-pixels in the sub-region, a first display-related parameter is obtained. The first display-related parameter may be the display-related parameter of a sub-pixel in the sub-region (e.g., the center sub-pixel of the sub-region), or the display-related parameters of all sub-pixels, or the average value of the display-related parameters of the sub-pixels, etc. And based on the first display-related parameter, brightness compensation is performed on the first display area A1 in the following steps to reduce the brightness difference between the first display area A1 and other display areas (e.g., the second display area A2) in the display panel 10, and / or to reduce the brightness difference between different sub-regions in the first display area A1.

[0044] The step of obtaining the first display-related parameters of at least one sub-region in the first display area A1 in step S100 above includes: obtaining the average value of the display-related parameters of the sub-pixels in the sub-region of the first display area A1 to obtain the first display-related parameters of the sub-region in the first display area A1, or obtaining the display-related parameters of the center sub-pixel of the sub-region in the first display area A1 to obtain the first display-related parameters of the sub-region in the first display area A1.

[0045] Specifically, the above provides two methods for obtaining the first display-related parameters of a sub-region in the first display area A1. In the first method, the driver chip acquires the display-related parameters of all or some sub-pixels in the sub-region, and then calculates the average of the display-related parameters of all or some sub-pixels to obtain the first display-related parameter. In the second method, the driver chip directly acquires the display-related parameters of the center sub-pixel of the sub-region, and this display-related parameter is directly used as the first display-related parameter. Each implementation method has its advantages. The first method has the advantage that the obtained first display-related parameter is closer to the level of the display-related parameters of the sub-region in the first display area A1. The second method has the advantage that the acquisition speed of the first display-related parameter is faster.

[0046] In one implementation, please refer to Figure 2 The first display area A1 and the second display area A2 are arranged along the first direction X. The first display area A1 includes a first sub-region Z1 and a second sub-region Z2 arranged along the first direction X. The first sub-region Z1 and the second display area A2 are arranged adjacent to each other. The step of obtaining the first display-related parameters of at least one sub-region in the first display area A1 includes:

[0047] Obtain the first display-related parameters for the first sub-region Z1.

[0048] Specifically, the first display area A1 and the second display area A2, arranged along the first direction X, have different refresh rates. Simultaneously, along the first direction X, the first display area A1 may also include a first sub-region Z1 and a second sub-region Z2. The first sub-region Z1 is close to the second display area A2. Because it is located at the boundary edge of the two display areas, there is a refresh rate transition, resulting in significant brightness variations in this area. Therefore, there is a brightness difference between the first sub-region Z1 and the second sub-region Z2, requiring compensation for the first sub-region Z1. The first display-related parameters of the first sub-region Z1 can be obtained by acquiring the display-related parameters of the sub-pixels in the first sub-region Z1 through a driver chip, and then obtaining the first display-related parameters of the first sub-region Z1.

[0049] In one embodiment, the step of obtaining the first display-related parameters of at least one sub-region in the first display area A1 in step S100 further includes:

[0050] Obtain the first display-related parameters for the second sub-region Z2.

[0051] Specifically, the second sub-region Z2 differs from the first sub-region Z1 in that it is not located at the boundary edge between the first display area A1 and the second display area A2. However, due to the different refresh rates of the first display area A1 and the second display area A2, a brightness difference still exists, requiring compensation for the second sub-region Z2. The first display-related parameters of the second sub-region Z2 can be obtained by acquiring the display-related parameters of the sub-pixels in the second sub-region Z2 through a driver chip, and then obtaining the first display-related parameters of the second sub-region Z2. This process is the same as or similar to obtaining the first display-related parameters of the first sub-region Z1. In one embodiment, the refresh rate of the second display area A2 is higher than that of the first display area A1. A higher refresh rate allows the display area to maintain its brightness better. When the refresh rate decreases, the transistors in the pixel circuit will leak current over time, leading to a decrease in brightness. Therefore, the brightness of the lower-brightness first display area A1 can be increased to achieve the effect of consistent brightness between the first display area A1 and the second display area A2.

[0052] In one application scenario, the refresh rate of the second display area A2 is 120Hz, and the refresh rate of the first display area A1 is 60Hz.

[0053] In another application scenario, the refresh rate of the second display area A2 is 144Hz, and the refresh rate of the first display area A1 is 30Hz.

[0054] Of course, in some other implementations, the refresh rate of the second display area A2 can also be lower than that of the first display area A1. This helps reduce the power consumption of the display panel.

[0055] Step S200: Based on the first compensation relationship corresponding to at least one sub-region of the first display area A1, determine the first compensation value corresponding to the first display-related parameter of at least one sub-region of the first display area A1.

[0056] Specifically, the first compensation relationship can be obtained in advance, for example, during the testing phase of the display panel. The testing phase refers to the stage when the display panel is still in production debugging. The first compensation relationship specifically refers to the first compensation value corresponding to each first display-related parameter for each sub-region in the first display area A1. The display-related parameters can be grayscale values, specifically the first compensation values ​​corresponding to at least some grayscale values ​​(e.g., multiple grayscale values ​​such as 8, 16, 32, 64, 128, 192, 255, etc.) in the range of 0 to 255. Different grayscale values ​​correspond to different first compensation values. Based on the first display-related parameters and the first compensation relationship of at least one sub-region in the first display area A1 obtained in step S100, the first compensation value corresponding to the first display-related parameters of at least one sub-region in the first display area A1 can be determined. The first compensation value is used to compensate for the brightness of the sub-region in the first display area A1.

[0057] Based on the first compensation relationship corresponding to the first sub-region Z1, determine the first compensation value corresponding to the first display-related parameter of the first sub-region Z1. And / or, based on the first compensation relationship corresponding to the second sub-region Z2, determine the first compensation value corresponding to the first display-related parameter of the second sub-region Z2.

[0058] Optionally, the first compensation relationship corresponding to the first sub-region Z1 and the second sub-region Z2 is different, which is equivalent to performing differentiated compensation on the first sub-region Z1 and the second sub-region Z2. Since the second sub-region Z2 is farther away from the refresh rate transition area, it is less affected and is only affected by the lower refresh rate. However, the first sub-region Z1 is closer to the refresh rate transition area and is affected not only by the lower refresh rate but also by the brightness change caused by the refresh rate transition. Therefore, the brightness compensation of the first sub-region Z1 and the second sub-region Z2 should be different, which can reduce the brightness difference between the first sub-region Z1 and the second sub-region Z2.

[0059] Compensating only the first sub-region Z1, or differentially compensating the first sub-region Z1 and the second sub-region Z2, can improve the problem of bright and dark stripes at the partition boundaries. This problem is caused by the partitioned display panel, where different display partitions use different scanning circuit GIP timing, different gamma curves, and different refresh frequencies, resulting in different light emission times and brightness of light-emitting elements (such as organic light-emitting diodes). Therefore, there is a problem of bright and dark stripes at the partition boundaries.

[0060] Step S300: Using the first compensation value corresponding to the sub-region of the first display area A1, perform compensation processing on the display-related parameters of the sub-pixels in the sub-region of the first display area A1 to obtain the first target display-related parameters of the sub-pixels in the sub-region of the first display area A1.

[0061] Specifically, the first compensation value is used to adjust the display-related parameters of the sub-pixels of the first display area A1. By adjusting the display-related parameters of the sub-pixels, brightness compensation is applied to the sub-regions of the first display area A1, reducing the brightness difference between the first display area A1 and other display areas (e.g., the second display area A2) in the display panel 10, and / or reducing the brightness difference between different sub-regions in the first display area A1, thereby improving brightness uniformity. The first target display-related parameter is the display-related parameter used by the sub-pixels to achieve brightness compensation. The first target display-related parameter is the adjusted display-related parameter of the sub-pixels in the sub-regions of the first display area A1.

[0062] The display-related parameters of the sub-pixels in the first sub-region Z1 are compensated using the first compensation value corresponding to the first sub-region Z1 to obtain the first target display-related parameters of the sub-pixels in the first sub-region Z1. And / or, the display-related parameters of the sub-pixels in the second sub-region Z2 are compensated using the first compensation value corresponding to the second sub-region Z2 to obtain the first target display-related parameters of the sub-pixels in the second sub-region Z2.

[0063] In one implementation, please refer to Figure 2 The second display area A2 includes a third sub-area Z3 and a fourth sub-area Z4 arranged along the first direction X. The third sub-area Z3 is arranged adjacent to the first display area A1.

[0064] Please see Figure 3 The compensation methods in this application also include:

[0065] In step S101: Obtain the second display-related parameters of the third sub-region Z3.

[0066] Specifically, the third sub-region Z3 is close to the first display area A1. Because it is located at the boundary edge of the two display areas, there is a refresh rate transition, resulting in significant brightness variations in this area. There is a brightness difference between the third sub-region Z3 and the fourth sub-region Z4, requiring compensation for the third sub-region Z3. The second display-related parameters of the third sub-region Z3 can be obtained by acquiring the display-related parameters of the sub-pixels in the third sub-region Z3 through the driver chip, and then obtaining the second display-related parameters. The acquisition method is the same as or similar to that of the second sub-region Z2 and the first sub-region Z1 described above.

[0067] In step S201: Based on the second compensation relationship, determine the second compensation value corresponding to the second display-related parameter of the third sub-region Z3.

[0068] Specifically, the second compensation relationship can be obtained in advance, for example, during the testing phase of the display panel. The second compensation relationship specifically refers to the second compensation value corresponding to each of the second display-related parameters for the third sub-region Z3 in the second display area A2. Based on the second display-related parameters of the third sub-region Z3 obtained in step S101 and the second compensation relationship, the second compensation value corresponding to the second display-related parameters of the third sub-region Z3 can be determined.

[0069] In step S301: The display-related parameters of the sub-pixels in the third sub-region Z3 are compensated using the second compensation value to obtain the second target display-related parameters of the sub-pixels in the third sub-region Z3.

[0070] Specifically, the second compensation value is used to adjust the display-related parameters of the sub-pixels in the third sub-region Z3. By adjusting the display-related parameters of the sub-pixels in the third sub-region Z3, the brightness difference between the third sub-region Z3 and other display areas of the display panel 10 is reduced, as is the brightness difference between the third sub-region Z3 and the fourth sub-region Z4. The second target display-related parameter is the adjusted display-related parameter of the sub-pixels in the third sub-region Z3.

[0071] Compensating only the third sub-region Z3, or differentially compensating the third sub-region Z3 and the fourth sub-region Z4, can improve the problem of bright and dark stripes at the partition boundaries. This problem is caused by the partitioned display panel, where different display partitions use different scanning circuit GIP timing, different gamma curves, and different refresh frequencies, resulting in different light emission times and brightness of light-emitting elements (such as organic light-emitting diodes). Therefore, there is a problem of bright and dark stripes at the partition boundaries.

[0072] In one embodiment, see Figure 4 After performing compensation processing on the display-related parameters of sub-pixels in the sub-region of the first display area A1 using the first compensation value corresponding to the sub-region of the first display area A1 in step S300 above, the compensation method of this application further includes:

[0073] Step S400: Obtain the chromaticity compensation matrix corresponding to at least one sub-region of the first display area A1.

[0074] Specifically, the chromaticity compensation matrix includes the chromaticity compensation values ​​of the display-related parameters of the pixel units corresponding to the sub-regions under each first target display-related parameter. The chromaticity compensation matrix is ​​used to compensate the color coordinates of the sub-regions of the first display area A1 after the brightness compensation of the sub-regions in step S300 above. For example, when the pixel unit includes red, green, and blue sub-pixels, the chromaticity compensation matrix is ​​a 3x3 matrix.

[0075] Obtain the chromaticity compensation matrix corresponding to the first sub-region Z1. And / or, obtain the chromaticity compensation matrix corresponding to the second sub-region Z2. And / or, the compensation method of this application further includes: obtaining the chromaticity compensation matrix corresponding to the third sub-region Z3.

[0076] In one application scenario, the sub-regions include a first sub-region Z1, a second sub-region Z2, and a third sub-region Z3, with the relevant parameters being grayscale values. The chromaticity compensation matrix is ​​shown in Table 1 below:

[0077] Table 1. Chroma compensation matrix for each sub-region under multiple primary target display parameters.

[0078]

[0079] As can be seen from the above, for each display-related parameter, there is a corresponding chromaticity compensation matrix for the sub-region.

[0080] Step S500: Use the chromaticity compensation matrix corresponding to the sub-region to compensate the first target display-related parameters of the pixel unit in the sub-region.

[0081] Specifically, using the aforementioned chromaticity compensation matrix, the first target display-related parameters obtained in the brightness compensation stage are subjected to chromaticity compensation processing. That is, the pixel units in the sub-regions of the previous steps after brightness compensation are subjected to chromaticity coordinate compensation to improve the chromaticity coordinate uniformity of the display panel.

[0082] The first target display-related parameters of the pixel units in the first sub-region Z1 are compensated using the chroma compensation matrix corresponding to the first sub-region Z1. And / or, the first target display-related parameters of the pixel units in the second sub-region Z2 are compensated using the chroma compensation matrix corresponding to the second sub-region Z2. And / or, the compensation method of this application further includes: compensating the second target display-related parameters of the pixel units in the third sub-region Z3 using the chroma compensation matrix corresponding to the third sub-region Z3.

[0083] Optionally, for the same sub-region of the first display area A1, the corresponding chroma compensation matrices are different at at least two display brightness levels. This can improve the compensation effect at different display brightness levels.

[0084] For the first sub-region Z1, the corresponding chroma compensation matrices are different for at least two display brightness levels. And / or, for the second sub-region Z2, the corresponding chroma compensation matrices are different for at least two display brightness levels. And / or, for the third sub-region Z3, the corresponding chroma compensation matrices are different for at least two display brightness levels.

[0085] For the first sub-region Z1, at least two display brightness levels, the same grayscale value corresponds to different chroma compensation matrices. And / or, for the second sub-region Z2, at least two display brightness levels, the same grayscale value corresponds to different chroma compensation matrices. And / or, for the third sub-region Z3, at least two display brightness levels, the same grayscale value corresponds to different chroma compensation matrices.

[0086] Optionally, for the same sub-region of the first display area A1, the corresponding chroma compensation matrices are different for at least two grayscale values. This can improve the compensation effect at different grayscale values.

[0087] For the first sub-region Z1, the chromaticity compensation matrix is ​​different for at least two grayscale values. And / or, for the second sub-region Z2, the chromaticity compensation matrix is ​​different for at least two grayscale values. And / or, for the third sub-region Z3, the chromaticity compensation matrix is ​​different for at least two grayscale values. For the first sub-region Z1, at the same brightness level, the chromaticity compensation matrix is ​​different for at least two grayscale values. And / or, for the second sub-region Z2, at the same brightness level, the chromaticity compensation matrix is ​​different for at least two grayscale values. And / or, for the third sub-region Z3, at the same brightness level, the chromaticity compensation matrix is ​​different for at least two grayscale values.

[0088] Furthermore, the aforementioned first compensation relationship and / or second compensation relationship are obtained during the testing phase of the display panel. The display panel in the testing phase may be different from the display panel in the actual use phase, or it may be the same display panel. For ease of distinction, this application refers to the display panel in the testing phase as the test panel. The division of the area can be found in [reference needed]. Figure 2 .

[0089] The following provides a method for obtaining the first compensation relationship during the testing phase. Please refer to [link / reference]. Figure 5 .

[0090] Step S1000: Light up all sub-pixels in the test panel in advance with the relevant parameters of the first test display.

[0091] Specifically, during the testing phase, a screen-activated device can be used to light up the test panel. The condition for screen activation is that the first test display related parameters are lit up. The first test display related parameters can be grayscale values, such as all grayscale values ​​from 0 to 255, or a portion of grayscale values ​​from 0 to 255, such as 32 grayscale values. Of course, it can also be the data voltage or gamma register value corresponding to the grayscale value.

[0092] Step S2000: Measure the display brightness of the first sub-region Z1 and the second sub-region Z2 respectively.

[0093] Specifically, the brightness of the sub-pixels in the first sub-region Z1 and the second sub-region Z2 is measured by a brightness acquisition device. The display brightness of each sub-region can be the average brightness value of all sub-pixels in the corresponding region, the average brightness value of some sub-pixels in the corresponding region, or the brightness value of any sub-pixel, such as the brightness of the center sub-pixel of the sub-region.

[0094] Step S3000: Based on the brightness difference between the first sub-region Z1 and the second sub-region Z2, generate a first target compensation value, and use the first target compensation value to compensate the display-related parameters of the sub-pixels in the first sub-region Z1, so that the display brightness of the first sub-region Z1 is equal to or the difference between the display brightness of the second sub-region Z2 is reduced.

[0095] Specifically, based on the display brightness of the first sub-region Z1 and the second sub-region Z2, for example, when the display brightness of the first sub-region Z1 is less than that of the second sub-region Z2, the display brightness of the first sub-region Z1 is increased by generating a first target compensation value, for example, the first target compensation value is used to increase the grayscale value of the first sub-region Z1; or when the display brightness of the first sub-region Z1 is greater than that of the second sub-region Z2, the display brightness of the first sub-region Z1 is decreased by generating a first target compensation value, for example, the first target compensation value is used to decrease the grayscale value of the first sub-region Z1. Of course, the grayscale difference between the first sub-region Z1 and the second sub-region Z2 can also be calculated by converting the brightness of the first sub-region Z1 and the second sub-region Z2 to grayscale, as detailed in the following embodiments. The display brightness of the second sub-region Z2 can be used as a reference to compensate the display-related parameters of the first sub-region Z1, so that after compensation of the first sub-region Z1, the display brightness of the first sub-region Z1 is equal to or the difference between the display brightness and that of the second sub-region Z2 is reduced.

[0096] See Figure 6 The step S3000 above, which generates the first target compensation value based on the brightness difference between the display brightness of the first sub-region Z1 and the display brightness of the second sub-region Z2, includes:

[0097] Step S3100: Convert the display brightness of the first sub-region Z1 to the corresponding first display grayscale value, and convert the display brightness of the second sub-region Z2 to the corresponding second display grayscale value.

[0098] Specifically, it can be done according to the brightness grayscale conversion formula, such as:

[0099] L x / L max =(G x / G max ) Gamma Among them, L x L represents the current display brightness of the sub-region. max G is the maximum display brightness of the display area. x G is the calculated grayscale corresponding to the current display brightness. maxHere, is the maximum grayscale value, and Gamma is the preset gamma value. Based on the above formula, the first grayscale value corresponding to the display brightness of the first sub-region Z1 and the second grayscale value corresponding to the display brightness of the second sub-region Z2 can be calculated respectively.

[0100] Step S3200: Calculate the first gray level difference between the first display gray level value and the second display gray level value.

[0101] Specifically, the difference between the first display grayscale value and the second display grayscale value is calculated to obtain the first grayscale difference value. For example, the first grayscale difference value can be -5, -1, 0, 1, or 5, etc. When the first grayscale difference value is negative, it indicates that the brightness of the first sub-region Z1 is lower than that of the second sub-region Z2; when the first grayscale difference value is zero, it indicates that the brightness of the first sub-region Z1 is the same as that of the second sub-region Z2; when the first grayscale difference value is positive, it indicates that the brightness of the first sub-region Z1 is higher than that of the second sub-region Z2.

[0102] Step S3300: Determine the first target compensation value corresponding to the first gray level difference according to the preset compensation table.

[0103] Specifically, the preset compensation table includes the correspondence between the first gray level difference and the first target compensation value. The corresponding first target compensation value can be directly obtained from the preset compensation table based on the first gray level difference in the above steps. The preset compensation table can be obtained by performing multiple corrections during the testing phase to make the brightness between sub-regions equal.

[0104] Based on the result of step S3000, the brightness compensation of each sub-region in the first display area A1 is equal. To ensure consistent brightness across the entire display area, the display brightness of a target sub-region in the second display area A2 is further measured. The target sub-region serves as the brightness reference area, and other display areas are compensated based on the brightness of the target sub-region. Specifically, when measuring the second display brightness of the first display area A1, the brightness can be measured across the entire first display area A1, a sub-region of the first display area A1, or the central sub-pixel of the first display area A1. Similarly, when measuring the third display brightness of the second display area A2, the brightness can be measured across the entire second display area A2, a sub-region of the second display area A2, or the central sub-pixel of the second display area A2.

[0105] See Figure 5 After step S3000 above, the following steps are also included.

[0106] Step S4000: Based on the second display brightness of the first display area A1 measured after compensation processing and the third display brightness of the target sub-region in the second display area A2 measured after compensation processing, a second target compensation value is generated so that after the display-related parameters of the sub-pixels in the first display area A1 are compensated using the second target compensation value, the display brightness of the first display area A1 is equal to or the difference between the display brightness of the target sub-region is reduced.

[0107] Specifically, the display-related parameters can be adjusted by considering the brightness difference between the second display brightness of the first display area A1 and the third display brightness of the target sub-area to make the display brightness of the first display area A1 equal to that of the target sub-area. The adjusted display-related parameters are then the second target compensation value. Alternatively, the grayscale difference between the second and third display brightness can be calculated using the brightness-grayscale conversion formula, and the second target compensation value can be obtained by looking up a preset compensation table.

[0108] Step S5000: Determine the target sum of the first target compensation value and the second target compensation value as the first compensation value of the first sub-region Z1, and the second target compensation value as the first compensation value of the second sub-region Z2.

[0109] Specifically, the target sum of the first target compensation value and the second target compensation value is the first compensation value of the first sub-region Z1, which can make the display brightness of the first sub-region Z1 equal to the display brightness of the target sub-region; the second target compensation value is used as the first compensation value of the second sub-region Z2, which can make the display brightness of the second sub-region Z2 equal to the display brightness of the target sub-region.

[0110] Step S6000: Establish a first compensation relationship between the first sub-region Z1 and the second sub-region Z2. The first compensation relationship of the first sub-region Z1 includes the correspondence between the display-related parameters of the first sub-region Z1 and the target value. The first compensation relationship of the second sub-region Z2 includes the compensation relationship between the display-related parameters of the second sub-region Z2 and the second target compensation value.

[0111] Specifically, the target value is used as the brightness compensation value for the first sub-region Z1 based on the target sub-region in the second display area A2, and the second target compensation value is used as the brightness compensation value for the second sub-region Z2 based on the target sub-region in the second display area A2. This correspondence is stored in the storage module. During user operation, when the pixel units in the display panel 10 are displayed, they can directly obtain display-related parameters and call the first compensation value in the first compensation relationship for compensation. The display brightness of the target sub-region in the second display area A2 can be used as a reference to compensate the display-related parameters of the first sub-region Z1 and the second sub-region Z2, so that after compensation of the first sub-region Z1 and the second sub-region Z2, the display brightness of the first sub-region Z1 and the second sub-region Z2 is equal to or the difference between them and the display brightness of the target sub-region in the second display area A2 is reduced.

[0112] See Figure 2 The second display area A2 includes a third sub-area Z3 and a fourth sub-area Z4 arranged along the first direction X. The third sub-area Z3 is arranged adjacent to the first display area A1, and the target sub-area is the fourth sub-area Z4.

[0113] Specifically, the third sub-region Z3 is adjacent to the first display area A1. Due to the refresh rate transition, the brightness of the third sub-region Z3 will be affected and change. The fourth sub-region Z4 is far away from the boundary edge area between the first display area A1 and the second display area A2, so its brightness is not affected. In this embodiment, the fourth sub-region Z4 is used as the brightness compensation reference area, i.e., the target sub-region.

[0114] In one embodiment, after performing compensation processing on the display-related parameters of the sub-pixels in the first sub-region using the first target compensation value in step S3000 above, or after performing compensation processing on the display-related parameters of the sub-pixels in the first display area A1 using the second target compensation value in step S4000 above.

[0115] Please see Figure 7 The compensation methods in this application also include:

[0116] Step S4100: Measure the fourth display brightness of the third sub-region Z3.

[0117] Specifically, the brightness of the sub-pixels in the third sub-region Z3 is measured by a brightness acquisition device. The fourth display brightness can be the average brightness value of all sub-pixels in the third sub-region Z3, the average brightness value of some sub-pixels in the third sub-region Z3, or the brightness value of any sub-pixel, such as the brightness of the central sub-pixel of the third sub-region Z3.

[0118] Step S4200: Based on the measured third and fourth display brightness of the target sub-region in the second display area A2, a third target compensation value is generated. This ensures that after compensating the display-related parameters of the sub-pixels in the third sub-region Z3 using the third target compensation value, the display brightness of the third sub-region Z3 is equal to or differs less from the display brightness of the target sub-region. The display brightness of the target sub-region in the second display area A2 can be used as a benchmark to compensate the display-related parameters of the third sub-region Z3, so that after compensation, the display brightness of the third sub-region Z3 is equal to or differs less from the display brightness of the target sub-region in the second display area A2.

[0119] Specifically, the display-related parameters can be adjusted by measuring the brightness difference between the third and fourth display brightness to make the display brightness of the third sub-region Z3 match that of the target sub-region. The adjusted display-related parameters are then the third target compensation value. Alternatively, the grayscale difference between the third and fourth display brightness can be calculated using the brightness-grayscale conversion formula, and the third target compensation value can be obtained by looking up a preset compensation table.

[0120] Of course, in some other implementations, the entire second display area A2 can also be used as the target sub-region.

[0121] The step of generating a third target compensation value based on the third and fourth display brightness includes:

[0122] Convert the third display brightness to the corresponding third display grayscale value, and convert the fourth display brightness to the corresponding fourth display grayscale value;

[0123] Calculate the second grayscale difference between the third and fourth display grayscale values;

[0124] Based on the preset compensation table, determine the third target compensation value corresponding to the second gray level difference.

[0125] See Figure 2 The second display area A2 includes a third sub-area Z3 and a fourth sub-area Z4, with the third sub-area Z3 being adjacent to the first display area A1.

[0126] participate Figure 8 After step S4000 above, and / or after step S4200, the compensation method of this application further includes:

[0127] Step S7000: Light up all sub-pixels in the test panel using the compensated display parameters.

[0128] Specifically, during the testing phase, a screen-activated device was used to illuminate the test panel.

[0129] Step S8000: Determine the color coordinates of the fourth sub-region Z4, the first sub-region Z1, and the second sub-region Z2.

[0130] Specifically, after illuminating the test panel using the display-related parameters after brightness compensation, the color coordinates of the fourth sub-region Z4, the first sub-region Z1, and the second sub-region Z2 are measured using a color coordinate acquisition device. The acquisition method can be the average color coordinates of all sub-pixels in the corresponding region or the average color coordinates of some sub-pixels, etc., and this application does not impose any restrictions.

[0131] Step S9000: Based on the color coordinates of the fourth sub-region Z4 and the first sub-region Z1, determine the first chromaticity compensation matrix corresponding to the first sub-region Z1, and based on the color coordinates of the fourth sub-region Z4 and the second sub-region Z2, determine the second chromaticity compensation matrix corresponding to the second sub-region Z2.

[0132] Specifically, taking the fourth sub-region Z4 as the reference benchmark for color coordinates, the pixel units of the first sub-region Z1 are compensated for color coordinates using a first chromaticity compensation matrix based on the difference between the color coordinates of the fourth sub-region Z4 and the first sub-region Z1, and the pixel units of the second sub-region Z2 are compensated for color coordinates using a second chromaticity compensation matrix based on the difference between the color coordinates of the fourth sub-region Z4 and the second sub-region Z2. The first and second chromaticity compensation matrices can be obtained by correcting the color coordinates multiple times during the testing phase.

[0133] The compensation method of this application also includes: determining the third chromaticity compensation matrix corresponding to the third sub-region Z3 based on the chromaticity coordinates of the fourth sub-region Z4 and the third sub-region Z3.

[0134] Based on the difference between the color coordinates of the fourth sub-region Z4 and the third sub-region Z3, the color coordinates of the pixel units in the third sub-region Z3 are compensated using the second color compensation matrix.

[0135] Using the fourth sub-region Z4 as the reference for color coordinates, color compensation is performed on the first sub-region Z1, the second sub-region Z2, and the third sub-region Z3.

[0136] In one application scenario, color coordinate compensation is performed using the following formula:

[0137]

[0138] Where R represents the display-related parameters of the first sub-pixel in the pixel unit before chroma compensation, G represents the display-related parameters of the second sub-pixel in the pixel unit before chroma compensation, B represents the display-related parameters of the third sub-pixel in the pixel unit before chroma compensation, R' represents the display-related parameters of the first sub-pixel in the pixel unit after chroma compensation, G' represents the display-related parameters of the second sub-pixel in the pixel unit after chroma compensation, and B' represents the display-related parameters of the third sub-pixel in the pixel unit after chroma compensation. This is the chromaticity compensation matrix for a pixel unit. The parameters in the chromaticity compensation matrix are used to compensate for the chromatic coordinates. When compensating for the chromatic coordinates of the first sub-region Z1, the above chromaticity compensation matrix is ​​the first compensation matrix; when compensating for the chromatic coordinates of the second sub-region Z2, the above chromaticity compensation matrix is ​​the second compensation matrix.

[0139] During the testing phase, under the first test display parameters, the correspondence between the first sub-region Z1 and the first chromaticity compensation matrix, and the correspondence between the second sub-region Z2 and the second chromaticity compensation matrix, are stored in the storage module. This storage allows the pixel units on the display panel to directly call the corresponding chromaticity compensation matrix based on the current display parameters during user operation. (See also...) Figure 2 The display panel 10 of this application includes an adjacent first display area A1 and a second display area A2. The first display area A1 includes a first main area and a first boundary area adjacent to the second display area A2, and / or, the second display area A2 includes a second main area and a second boundary area adjacent to the first display area A1. The first main area may correspond to a second sub-region Z2, the first boundary area may correspond to a first sub-region Z1, the second main area may correspond to a fourth sub-region Z4, and the second boundary area may correspond to a third sub-region Z3.

[0140] The compensation method of this application includes: compensating for the display-related parameters of the first boundary area when the refresh rate of the first display area A1 is different from that of the second display area A2, and / or compensating for the display-related parameters of the second boundary area.

[0141] Specifically, since there is a refresh rate transition at the boundary between the first display area A1 and the second display area A2, there will be brightness changes in the first boundary area and the second boundary area at the boundary between the first display area A1 and the second display area A2. Therefore, the brightness uniformity of the boundary area can be improved by compensating the display-related parameters of the corresponding areas.

[0142] Optionally, display-related parameters include grayscale values, data voltage, or gamma register values. Any parameter that allows adjustment of display brightness via a driver chip is acceptable; this application does not impose any restrictions.

[0143] The compensation method of this application also includes: when the refresh rate of the first display area A1 is less than the refresh rate of the second display area A2, differential compensation is performed on the display-related parameters of the first main area and the first boundary area.

[0144] Specifically, the first main body area is far from the refresh rate transition area and is less affected, only by the lower refresh rate. The first boundary area is close to the refresh rate transition area and is affected not only by the lower refresh rate but also by the brightness change caused by the refresh rate transition. Therefore, the brightness compensation of the first main body area and the first boundary area should be different to reduce the brightness difference between the first main body area and the first boundary area.

[0145] Optionally, if the refresh rate of the first display area is different from that of the second display area, brightness and chromaticity compensation are performed on the display-related parameters of the first boundary area, and / or brightness and chromaticity compensation are performed on the display-related parameters of the second boundary area.

[0146] Optionally, if the refresh rate of the first display area is different from that of the second display area, brightness compensation and color compensation are performed on the display-related parameters of the first main area.

[0147] When the refresh rate of the first display area A1 is lower than that of the second display area A2, differential brightness compensation is performed on the display-related parameters of the first main area and the first boundary area. The brightness compensation value for the display-related parameters of the first main area is different from the brightness compensation value for the display-related parameters of the first boundary area.

[0148] For example, brightness compensation can be performed on the display-related parameters of the first main area and the first boundary area, for example, through steps S100, S200 and S300.

[0149] When the refresh rate of the first display area A1 is less than the refresh rate of the second display area A2, differential chromaticity compensation is performed on the display-related parameters of the first main area and the first boundary area. The chromaticity compensation value for compensating the display-related parameters of the first main area is different from the chromaticity compensation value for compensating the display-related parameters of the first boundary area.

[0150] For example, color compensation can be performed on the display-related parameters of the first main body area and the first boundary area, for example, through steps S400 and S500.

[0151] For the same display parameters (e.g., 32 grayscale), the brightness compensation values ​​for the first main area and the first boundary area are different. The first compensation relationships for the first main area and the first boundary area are also different.

[0152] For the same display parameters (e.g., 32 grayscale), the chromaticity compensation values ​​for the first main area and the first boundary area are different. Therefore, the chromaticity compensation matrices for the first main area and the first boundary area are different.

[0153] For the same display parameters (e.g., 32 grayscale), the brightness compensation values ​​for the second main area and the second boundary area are different. The compensation relationships for the second main area and the second boundary area are also different.

[0154] For the same display parameters (e.g., 32 gray levels), the chromaticity compensation values ​​for the second main area and the second boundary area are different. Therefore, the chromaticity compensation matrices for the second main area and the second boundary area are different.

[0155] For the same display parameters (e.g., 32 grayscale), the brightness compensation values ​​for the first and second boundary regions are different. The compensation relationships for the first and second boundary regions are also different.

[0156] For the same display-related parameters (e.g., 32 gray levels), the chromaticity compensation values ​​for the first and second boundary regions are different. Therefore, the chromaticity compensation matrices for the first and second boundary regions are different.

[0157] The compensation method provided in this embodiment can be combined with the compensation method provided in the above embodiments, and will not be described again here.

[0158] Specifically, display devices such as mobile phones and computers typically include brightness adjustment buttons. Users use these buttons to change the input display brightness level, also known as the Display Brightness Value (DBV). The lower the display brightness level, the lower the brightness of the sub-pixel at the same grayscale.

[0159] Optionally, the display panel also includes a frequency-modulated scanning circuit and multiple scan lines, which are arranged along a first direction and extend along a second direction. The second direction intersects the first direction, for example, it may be perpendicular. The frequency-modulated scanning circuit is electrically connected to the sub-pixels of each display area via the scan lines.

[0160] See Figure 9 , Figure 9 This is a schematic diagram of one embodiment of the compensation device of this application. The compensation device 200 includes a processor 210 and a memory 220. The processor 210 is coupled to the memory 220, and the memory 220 stores program data. The processor 210 executes the program data in the memory 220 to implement the method steps in any of the above embodiments. The detailed steps can be found in the above embodiments and will not be repeated here.

[0161] The compensation device 200 can be any device with algorithm capabilities, such as a driver chip, mobile phone, tablet computer, smartwatch, desktop computer, or laptop computer, and there are no restrictions on it.

[0162] See Figure 10 , Figure 10 This is a schematic diagram of one embodiment of the computer-readable storage medium of this application. The computer-readable storage medium 400 stores a computer program 410, which can be executed by a processor to implement the steps in any of the above methods. Detailed method steps can be found in the relevant content above, and will not be repeated here.

[0163] Specifically, the computer-readable storage medium 400 can be a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, or a device that can store the computer program 410. Alternatively, it can be a server that stores the computer program 410, which can send the stored computer program 410 to other devices for execution, or it can run the stored computer program 410 itself.

[0164] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A compensation method for a display panel, characterized in that, The method includes: In response to the difference between the refresh rate of the first display area and the refresh rate of the second display area, first display-related parameters of at least one sub-region in the first display area are obtained; Based on a first compensation relationship corresponding to at least one sub-region of the first display area, a first compensation value corresponding to the first display-related parameter of at least one sub-region of the first display area is determined; Using the first compensation value corresponding to the sub-region of the first display area, the display-related parameters of the sub-pixels in the sub-region of the first display area are compensated to obtain the first target display-related parameters of the sub-pixels in the sub-region of the first display area; The first display area and the second display area are arranged along a first direction. The first display area includes a first sub-region and a second sub-region arranged along the first direction. The first sub-region and the second display area are arranged adjacent to each other. The step of obtaining the first display-related parameters of at least one sub-region in the first display area includes: Obtain the first display-related parameters of the first sub-region and the first display-related parameters of the second sub-region; The method further includes: In advance, display all sub-pixels in the test panel with the relevant parameters for the first test; The display brightness of the first sub-region and the second sub-region were measured respectively. Based on the brightness difference between the first sub-region and the second sub-region, a first target compensation value is generated, and the first target compensation value is used to compensate the display-related parameters of the sub-pixels in the first sub-region so that the display brightness of the first sub-region is equal to or the difference between the display brightness of the second sub-region is reduced. Based on the second display brightness of the first display area measured after compensation processing and the third display brightness of the target sub-region in the second display area measured, a second target compensation value is generated so that after the display-related parameters of the sub-pixels in the first display area are compensated using the second target compensation value, the display brightness of the first display area and the display brightness of the target sub-region are equal or the difference is reduced. The target sum of the first target compensation value and the second target compensation value is determined as the first compensation value of the first sub-region, and the second target compensation value is determined as the first compensation value of the second sub-region. Establish a first compensation relationship between the first sub-region and the second sub-region. The first compensation relationship of the first sub-region includes the correspondence between the display-related parameters of the first sub-region and the target value. The first compensation relationship of the second sub-region includes the correspondence between the display-related parameters of the second sub-region and the second target compensation value.

2. The method according to claim 1, characterized in that, The first compensation relationship is different for the first sub-region and the second sub-region.

3. The method according to claim 1, characterized in that, The refresh rate of the second display area is higher than that of the first display area.

4. The method according to claim 3, characterized in that, The refresh rate of the second display area is 120 Hz, and the refresh rate of the first display area is 60 Hz.

5. The method according to claim 1, characterized in that, The display parameters include grayscale values, data voltage, or gamma register values.

6. The method according to claim 1, characterized in that, The second display area includes a third sub-region and a fourth sub-region arranged along the first direction, wherein the third sub-region is disposed adjacent to the first display area, and the method further includes: Obtain the second display-related parameters of the third sub-region; Based on the second compensation relationship, a second compensation value corresponding to the second display-related parameter of the third sub-region is determined; The display-related parameters of the sub-pixels in the third sub-region are compensated using the second compensation value to obtain the second target display-related parameters of the sub-pixels in the third sub-region.

7. The method according to claim 1, characterized in that, The step of obtaining the first display-related parameters of at least one sub-region in the first display area includes: The average value of the display-related parameters of the sub-pixels in the sub-region of the first display area is obtained to obtain the first display-related parameter of the sub-region in the first display area; or, the display-related parameters of the center sub-pixel in the sub-region of the first display area are obtained to obtain the first display-related parameter of the sub-region in the first display area.

8. The method according to claim 1, characterized in that, The step of generating a first target compensation value based on the brightness difference between the first sub-region and the second sub-region includes: The display brightness of the first sub-region is converted into the corresponding first display grayscale value, and the display brightness of the second sub-region is converted into the corresponding second display grayscale value. Calculate the first grayscale difference between the first displayed grayscale value and the second displayed grayscale value; Based on the preset compensation table, the first target compensation value corresponding to the first gray level difference is determined.

9. The method according to claim 1, characterized in that, The second display area includes a third sub-area and a fourth sub-area arranged along the first direction. The third sub-area is adjacent to the first display area, and the target sub-area is the fourth sub-area.

10. The method according to claim 9, characterized in that, After compensating the display-related parameters of sub-pixels in the first sub-region using the first target compensation value, the method further includes: Measure the fourth display brightness of the third sub-region; Based on the measured third and fourth display brightness of the target sub-region in the second display area, a third target compensation value is generated so that after the display-related parameters of the sub-pixels in the third sub-region are compensated using the third target compensation value, the display brightness of the third sub-region is equal to or the difference between the display brightness of the target sub-region and the display brightness of the target sub-region is reduced.

11. The method according to claim 1, characterized in that, The second display area includes a third sub-region and a fourth sub-region, the third sub-region being adjacent to the first display area; after compensating the display-related parameters of the sub-pixels in the first display area using the second target compensation value, the method further includes: Use the compensated display parameters to illuminate all sub-pixels in the test panel; Determine the color coordinates of the fourth sub-region, the first sub-region, and the second sub-region; Based on the color coordinates of the fourth sub-region and the first sub-region, a first chromaticity compensation matrix corresponding to the first sub-region is determined, and based on the color coordinates of the fourth sub-region and the second sub-region, a second chromaticity compensation matrix corresponding to the second sub-region is determined.

12. The method according to claim 1, characterized in that, After compensating the display-related parameters of the sub-pixels in the sub-region of the first display area using the first compensation value corresponding to the sub-region of the first display area, the method further includes: Obtain the chromaticity compensation matrix corresponding to at least one sub-region of the first display area; The first target display-related parameters of the pixel units in the sub-region are compensated using the chromaticity compensation matrix corresponding to the sub-region.

13. The method according to claim 12, characterized in that, For the same sub-region of the first display area, the corresponding chromaticity compensation matrix is ​​different under at least two display brightness levels or at least two grayscale values.

14. A compensation device, characterized in that, The device includes a processor and a memory, the processor being coupled to the memory, the memory storing program data, and the processor executing the program data in the memory to implement the steps of the method as described in any one of claims 1-13.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that can be executed by a processor to implement the steps of the method as described in any one of claims 1-13.

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