Brightness compensation method and device of display panel and display panel

Abstract

This application provides a brightness compensation method and apparatus for a display panel, and a display panel having the apparatus of the brightness compensation method for the display panel, relating to the field of display technology. The brightness compensation method includes dividing the display area of ​​the display panel into multiple display zones based on a preset region division rule. It involves acquiring brightness compensation data of pixels in the display area, and calculating discrete values ​​of the brightness corresponding to the pixels of the display zones based on the brightness compensation data. Based on the region division rule, the display zones with discrete values ​​not less than a first threshold are divided into multiple sub-zones. Finally, brightness compensation is performed on the sub-zones based on the preset brightness compensation rule. This effectively improves the problem of insufficient brightness compensation in the aging areas of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically to a brightness compensation method and apparatus for a display panel, and a display panel having an apparatus for applying the brightness compensation method for the display panel. Background Technology

[0002] With the continuous development of display technology, people's requirements for display devices are also increasing. However, due to factors such as the stability and maturity of display panel manufacturing processes, display panels always suffer from spatial and temporal display non-uniformity. Furthermore, as the size of display panels increases, these problems become more pronounced. Therefore, solving the display non-uniformity problem, especially for large-size display panels, has become one of the indispensable key technologies in mass production. The display non-uniformity of display panels is not only closely related to the manufacturing process but also to the brightness changes of the organic light-emitting materials used during their lifespan. Therefore, simply improving the manufacturing process cannot completely solve the display non-uniformity problem.

[0003] Therefore, there is an urgent need to provide a new solution that can effectively improve the problem of uneven display in display panels, especially large-sized display panels. Summary of the Invention

[0004] The first aspect of this application provides a brightness compensation method for a display panel. The method includes dividing the display area of ​​the display panel into multiple display zones based on a preset region division rule; acquiring brightness compensation data of pixels in the display area; calculating discrete brightness values ​​corresponding to the pixels of the display zones based on the brightness compensation data; dividing the display zones with discrete values ​​not less than a first threshold into multiple sub-zones based on the region division rule; and performing brightness compensation on the sub-zones based on the preset brightness compensation rule.

[0005] In the above scheme, after dividing the display zone with discrete values ​​not less than the first threshold into multiple sub-zones, and then performing brightness compensation on the sub-zones, the problem that the aging area of ​​the display panel cannot obtain effective brightness compensation can be effectively improved.

[0006] In conjunction with the first aspect, in some embodiments, the brightness compensation method further includes performing brightness compensation on display zones with discrete values ​​less than a first threshold based on brightness compensation rules.

[0007] In the above scheme, brightness compensation is performed on the display zones whose corresponding brightness dispersion values ​​are less than the first threshold, which helps to improve the uniformity of the display on the overall display panel.

[0008] In conjunction with the first aspect, in some implementations, dividing a display partition with a discrete value not less than a first threshold into multiple sub-partitions based on a region division rule includes dividing the display partition with a discrete value not less than the first threshold into multiple regions based on a region division rule. The discrete value of the brightness corresponding to the pixels within each region is determined, and regions with discrete values ​​not less than the first threshold are divided according to the region division rule. The above determination is performed on all regions obtained based on the region division rule until the regions satisfy a preset rule, and the obtained regions are then used as sub-partitions.

[0009] In the above solution, the operation of dividing the region is constrained by setting two conditions: a preset rule and a first threshold. This reduces the requirements for storage space without affecting the uniformity of brightness on the display panel.

[0010] In conjunction with the first aspect, in some implementations, the preset rule includes that the number of pixels in a region is not greater than a second threshold, and further, the second threshold is 4. Alternatively, the preset rule includes that the number of times the region is divided based on the region division rule is not greater than a third threshold, and further, the third threshold is not less than 3.

[0011] In the above scheme, different preset rules can be selected according to different needs of the display panel, thereby improving the flexibility of the application of the brightness compensation method.

[0012] In conjunction with the first aspect, in some implementations, the region division rule includes dividing the display area into regions comprising at least M rows and N columns of pixels arranged in an array.

[0013] In the above scheme, the display panel is divided into multiple areas arranged in a pixel array, which is beneficial for storing the brightness compensation data of the corresponding areas, thereby reducing the storage space requirements of the brightness compensation method.

[0014] In conjunction with the first aspect, in some embodiments, the brightness compensation rule includes using the average, weighted average, or maximum value of the brightness compensation data of all pixels in the display partition to be compensated as the brightness compensation value for that display partition. Compensation is then applied to all pixels within that display partition based on the brightness compensation value of the display partition to be compensated. Alternatively, the average, weighted average, or maximum value of the brightness compensation data of all pixels in the sub-partition to be compensated is used as the brightness compensation value for that sub-partition. Compensation is then applied to all pixels within that sub-partition based on the brightness compensation value of the sub-partition to be compensated.

[0015] In conjunction with the first aspect, in some embodiments, obtaining the brightness compensation data of the pixels in the display area includes obtaining the aging attenuation formula and the aging compensation table of the display panel. Based on the aging attenuation formula, an attenuation count for each pixel is obtained, and the total attenuation count for each pixel is accumulated at set time intervals to obtain the total attenuation count. The aging compensation table of the display panel is obtained, and based on the total attenuation count for each pixel, the corresponding compensation value is looked up from the aging compensation table as the brightness compensation data for each pixel.

[0016] A second aspect of this application provides an apparatus for applying a brightness compensation method to a display panel. The apparatus includes a division module, an acquisition module, a processing module, and a compensation module. The division module divides the display area of ​​the display panel into multiple regions based on a preset region division rule. The acquisition module acquires brightness compensation data for the pixels of the display area. The processing module calculates discrete brightness values ​​corresponding to the pixels of the display regions based on the brightness compensation data, and divides the display areas with discrete values ​​not less than a first threshold into multiple sub-regions. The compensation module performs brightness compensation on the sub-regions based on a preset brightness compensation rule.

[0017] In conjunction with the second aspect, in some embodiments, the device further includes a judgment module. This judgment module is used to determine the discrete value of the brightness corresponding to a pixel within each region, divide regions whose discrete values ​​are not less than a first threshold according to a region division rule, and perform the above judgment on all regions obtained based on the region division rule until the regions satisfy a preset rule, so that the obtained regions are used as sub-partitions.

[0018] A third aspect of this application provides a display device comprising a display panel and an apparatus for applying the brightness compensation method of the display panel as described in any of the second aspects above. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0020] Figure 1 This is a schematic diagram of a brightness compensation method for a display panel according to an embodiment of this application.

[0021] Figure 2 This is a flowchart of a brightness compensation method for a display panel according to an embodiment of this application.

[0022] Figure 3 This is a flowchart of dividing a display partition with discrete values ​​not less than a first threshold into multiple sub-partitions, according to an embodiment of this application.

[0023] Figure 4This is a flowchart of obtaining brightness compensation data of pixels in the display area according to an embodiment of this application.

[0024] Figure 5 This is a schematic diagram of an apparatus for a brightness compensation method for an application display panel according to an embodiment of this application. Detailed Implementation

[0025] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In existing technologies, a common method to improve the uneven brightness of display panels, especially large-size display panels, is to perform brightness compensation on the input image of the display panel. Specifically, for an n x m display panel, which consists of a dot matrix of n*m pixels, assuming each pixel includes sub-pixels R, G, and B, brightness compensation of the input image of the display panel requires compensation for the brightness of all n*m*3 sub-pixels, resulting in a relatively large amount of compensation information. Storing the initial brightness compensation information of all sub-pixels places high demands on the capacity of both non-volatile and volatile memory. Furthermore, real-time brightness compensation requires high data bandwidth from the control components, thus increasing the cost of the display panel.

[0027] Therefore, to reduce the memory requirements of brightness compensation methods, block size downsampling is commonly used to reduce storage space and save costs. Specifically, all pixels of the display panel are grouped, and the average brightness compensation information for each group is calculated based on the initial brightness compensation information of all pixels in that group. This average brightness compensation information is then used as the brightness compensation information for each pixel in that group. This effectively reduces the amount of data required for brightness compensation, thereby reducing the data bandwidth requirements of storage space and saving display panel costs. However, this downsampling method leads to pixel compensation data loss, especially in areas of the display panel with severe aging. Using a larger downsampling block size in these areas results in poor compensation performance, leading to poor overall compensation uniformity of the display panel.

[0028] In view of this, embodiments of this application provide a brightness compensation method for a display panel. This brightness compensation method includes dividing the display area of ​​the display panel into multiple display partitions based on a preset region division rule. Brightness compensation data of pixels in the display area is obtained, and discrete values ​​of brightness corresponding to pixels in the display partitions are calculated based on the brightness compensation data. Based on the region division rule, display partitions with discrete values ​​not less than a first threshold are divided into multiple sub-partitions. Brightness compensation is performed on the sub-partitions based on the preset brightness compensation rule. Thus, based on the region division rule, display partitions with discrete brightness values ​​of one or more pixels not less than the first threshold are divided into multiple sub-partitions, thereby making the brightness differences of pixels in the multiple compensation areas (display partitions, sub-partitions, etc.) of the display panel small. Furthermore, after brightness compensation on the sub-partitions, the problem of pixel compensation data loss caused by downsampling can be improved, especially improving the brightness compensation effect in areas of severe aging in the display panel, thereby improving the brightness uniformity of the display panel.

[0029] For example, combined Figure 1 A schematic diagram of a brightness compensation method for a display panel and Figure 2 A flowchart of a brightness compensation method for a display panel is provided, and the method is described in detail below.

[0030] Step S100: Based on preset area division rules, the display area of ​​the display panel is divided into multiple display partitions. Specifically, combined with... Figure 1 As can be seen, taking the display area of ​​the display panel 100, which includes 16 rows and 16 columns of pixels 110, as an example, the display area of ​​the display panel 100 is divided into four adjacent display partitions 120, namely the first display partition 120a, the second display partition 120b, the third display partition 120c, and the fourth display partition 120d. The arrangement of pixels 110 in each display partition 120 is the same, and each display partition 120 contains 8*8 pixels 110.

[0031] Step S200: Obtain the brightness compensation data of the pixels in the display area, and calculate the discrete value of the brightness corresponding to the pixels in the display area based on the brightness compensation data. Specifically, the brightness compensation data is predetermined based on the test brightness value and target brightness value of the pixels in the display area under the test pattern, and has been burned into the display panel. Therefore, the brightness compensation data of the corresponding pixels in the display area can be obtained at any time. The discrete value of brightness refers to the degree of dispersion of the actual brightness of each display area relative to the overall average brightness of the display panel at a certain grayscale. Based on this, the discrete value of the brightness corresponding to the pixels in each display area can be understood as reflecting the dispersion of the brightness compensation data of the pixels in the corresponding display area. The discrete value of each display area can be calculated based on the standard deviation of its corresponding brightness mean and the overall mean. Continue to refer to... Figure 1 It can be seen that the first display partition 120a, the second display partition 120b, the third display partition 120c, and the fourth display partition 120d have different brightness compensation data. Specifically, the first display partition 120a and the fourth display partition 120d are aging areas and require brightness compensation, while the second display partition 120b and the third display partition 120c do not show aging phenomena and therefore do not require brightness compensation. After calculating the discrete values ​​of each display partition according to the method mentioned above, the maximum dispersion of each display partition is determined according to the magnitude of the dispersion. The discrete value corresponding to the display partition with the largest dispersion is the first threshold, that is, the discrete value of the brightness of pixel 110 corresponding to the first display partition 120a is the first threshold.

[0032] Step S300: Based on the region division rules, the display partition with discrete values ​​not less than the first threshold is divided into multiple sub-partitions. Specifically, continue to refer to... Figure 1 It can be seen that the first display zone 120a, whose discrete value is not less than the first threshold, is divided into four sub-zones 121: the first sub-zone 121a, the second sub-zone 121b, the third sub-zone 121c, and the fourth sub-zone 121d. Each sub-zone 121 contains the same number of pixels 110 (4*4), and the corresponding pixel array arrangement is also the same. The fourth display zone 120d, whose corresponding pixel 110 brightness discrete value is less than the first threshold, does not need further subdivision. Furthermore, the first threshold can be a value obtained empirically, which varies depending on the specifications of the display panel or consumer needs.

[0033] Step S400: Based on a preset brightness compensation rule, perform brightness compensation on the sub-zones. Specifically, according to the preset brightness compensation rule, perform brightness compensation on the four sub-zones 121 obtained by dividing the first display zone 120a, thereby improving the problem that the brightness of severely aged areas of the display panel cannot be effectively and uniformly compensated.

[0034] It should be understood that the pixel arrangement of the display panel is not limited to 16 rows and 16 columns; in fact, it includes more pixels, and the pixel arrangement method is not limited to the array arrangement shown in the example. The first threshold is not limited to the discrete value corresponding to the display partition with a high degree of dispersion; it can be the average of the discrete values ​​of all display partitions or a value set empirically. Furthermore, the number of display partitions obtained by dividing the display area based on the preset area division rules is not limited to four; generally, there will be more. The arrangement and number of pixels within each display partition can be the same or different, and these can be designed according to the actual situation, which will not be elaborated here.

[0035] In addition to the four steps mentioned above, this brightness compensation method also includes the following steps.

[0036] For example, in some embodiments, the brightness compensation method further includes step S500: performing brightness compensation on display zones with discrete values ​​less than a first threshold based on brightness compensation rules. For instance, brightness compensation is performed on the fourth display zone 120d, i.e., the area with aging and where the discrete value of the brightness compensation value is small, based on the brightness compensation rules. This further improves the overall uniformity of the display on the display panel 100.

[0037] In step S300 above, dividing the display partition with discrete values ​​not less than the first threshold into multiple sub-partitions based on the region division rules is a key step in improving the brightness compensation effect of the aging area of ​​the display panel in this brightness compensation method. There are various specific implementation methods for this step. The following embodiment introduces the specific implementation method for this step.

[0038] In some embodiments, refer to Figure 3 It can be seen that the specific plan includes the following steps:

[0039] Step S310: Based on the region division rules, divide the display partition with discrete values ​​not less than a first threshold into multiple regions. For example, refer to... Figure 1 As can be seen, the first display partition 120a, whose discrete value of the brightness of the corresponding pixel 110 is not less than the first threshold, is divided into four sub-partitions 121 based on the region division rules, namely the first sub-partition 121a, the second sub-partition 121b, the third sub-partition 121c and the fourth sub-partition 121d.

[0040] Step S320: Determine whether the discrete value of the brightness corresponding to the pixel in each region is not less than the first threshold.

[0041] Step S321: If so, divide the region according to the region division rules.

[0042] Step S322: If not, do not divide the area; the resulting area is the display partition.

[0043] For example, it is determined whether the discrete values ​​of the brightness corresponding to the pixels 110 of the first sub-partition 121a, the second sub-partition 121b, the third sub-partition 121c and the fourth sub-partition 121d are not less than the first threshold, and the sub-partitions 121 corresponding to the first threshold are further divided according to the region division rules.

[0044] Step S330: Perform the above judgment on all regions obtained based on the region division rules until the regions meet the preset rules, and then use the obtained regions as sub-partitions. That is, before performing the second region division, it is necessary not only to judge whether the discrete value of the brightness of the region is not less than the first threshold, but also to judge whether it meets the preset conditions. This step is another constraint condition for terminating the above step S320. It is possible that after multiple divisions, the discrete value of the brightness of the corresponding pixels in some sub-partitions is still greater than or equal to the first threshold. In this case, a constraint condition is needed to terminate the region division operation to avoid the region division from continuing indefinitely and causing high requirements on the data bandwidth and storage space of the control unit.

[0045] For example, continue to refer to Figure 3 It can be seen that the specific scheme also includes step S330: determining whether all regions obtained based on the region division rules meet the preset conditions.

[0046] S331: If so, the obtained area is used as a sub-partition.

[0047] S332: If not, continue to divide the region based on the region division rules.

[0048] Following the concept of preset rules mentioned in step S330, this embodiment will now provide a detailed description of the content of these preset rules.

[0049] For example, in some embodiments, the preset rule includes a region where the number of pixels is not greater than a second threshold. In at least one embodiment, the second threshold is 4. That is, when the number of pixels included in a sub-partition or display partition is less than or equal to four, even if the discrete value of the brightness of the pixels included in the corresponding sub-partition or display partition is not less than a first threshold, this sub-partition or display partition does not need to be further divided. For example, the first sub-partition 121a, the second sub-partition 121b, the third sub-partition 121c, and the fourth sub-partition 121d each include four pixels 110. This eliminates the need to judge the discrete value of the brightness of the sub-partition 121 and to continue the division, simplifying the steps of the brightness compensation method. Furthermore, when all sub-partitions 121 have only four adjacent pixels 110, the difference in brightness compensation information between adjacent pixels 110 of the display panel 100 is not significant. Therefore, setting the preset rule in this way will not affect the improvement of the uniformity of the brightness of the display panel 100.

[0050] For example, in some other embodiments, the preset rule includes that the number of times the region is divided based on the region division rule does not exceed a third threshold. In at least one embodiment, the third threshold is not less than 3. Specifically, this means that operations on a region are stopped after a maximum of three divisions, which helps to reduce the requirements of the compensation method on the storage device.

[0051] It should be understood that the second and third thresholds are not limited to the numbers in the examples above. They can be values ​​obtained based on empirical formulas or values ​​obtained by those skilled in the art based on the functional requirements of the display panel. Therefore, in actual production, those skilled in the art can set specific values ​​for the second and third thresholds according to specific circumstances, which will not be elaborated here.

[0052] In addition to providing a detailed introduction to the core step of the brightness compensation method, namely step S300, which divides the display partition with the corresponding discrete value not less than the first threshold into multiple sub-partitions, this embodiment also introduces the area division rules designed in the method, as follows.

[0053] In some embodiments, the region partitioning rule includes dividing the display area into regions comprising at least M rows and N columns of pixels arranged in an array, where M and N are positive integers and may be equal or unequal. This rule of dividing the display area into regions comprising arrayed pixels facilitates the access to brightness compensation data and saves storage space. For example, continuing with... Figure 1It can be seen that the first display partition 120a, the second display partition 120b, the third display partition 120c, and the fourth display partition 120d each include 8*8 pixels 110, and the pixels 110 are arranged in an array. Furthermore, the first sub-partition 121a, the second sub-partition 121b, the third sub-partition 121c, and the fourth sub-partition 121d of the first display partition 120a each include 4*4 pixels 110, and the pixels 110 are arranged in an array.

[0054] It should be understood that the area division rules are not limited to the schemes in the examples above. They can first obtain the brightness compensation data of the pixels in the display area, and then divide the area according to the dispersion distribution of the brightness compensation data. The new area obtained can contain pixels arranged in an array, or it can be in other ways. We will not make too many restrictions here. It can be designed according to the actual application situation, and we will not elaborate on it here.

[0055] Next, this embodiment also introduces the preset brightness compensation rules in the brightness compensation method.

[0056] For example, in some embodiments, the brightness compensation rule executed in steps S400 and S500 includes using the average, weighted average, or maximum value of the brightness compensation data of all pixels in the display partition to be compensated as the brightness compensation value of the display partition, and compensating all pixels within the display partition based on the brightness compensation value of the display partition to be compensated. Alternatively, the average, weighted average, or maximum value of the brightness compensation data of all pixels in the sub-partition to be compensated is used as the brightness compensation value of the sub-partition, and compensating all pixels within the sub-partition based on the brightness compensation value of the sub-partition to be compensated. In this way, the amount of brightness compensation information stored in the memory is much smaller than the amount of pixel brightness compensation information, which can effectively reduce the storage space requirements and reduce costs. In addition, the rule based on region division makes the discrete value of the brightness of pixels in each region less than a first threshold. Using the average, weighted average, or maximum value of the brightness as the brightness compensation value of each pixel corresponding to that region is more conducive to improving the brightness uniformity of the entire display panel.

[0057] For example, such as Figure 1 As shown, the average value of the brightness compensation data of the pixels 110 corresponding to each display partition 120 and sub-partition 121 is used as the brightness compensation value of all pixels 110 in that display partition 120 and sub-partition 121. Furthermore, the brightness compensation value corresponding to the display partition 120 and sub-partition 121 can also be the weighted average or the maximum value of the brightness compensation data of all pixels 110 in the corresponding area. This can be selected according to the functional requirements of the display panel 100, and will not be elaborated upon here.

[0058] Furthermore, this embodiment also introduces the brightness compensation data of the pixels in the display area.

[0059] In some implementations, such as Figure 4 As shown, obtaining the brightness compensation data of the pixels in the display area in step S200 includes the following steps, as detailed below.

[0060] Step S210: Obtain the aging degradation formula and aging compensation table for the display panel. Specifically, conduct aging experiments on the screen to obtain the aging degradation formula, use a color analyzer CA410 to statistically analyze the screen brightness data under various influencing factors, and establish an aging compensation table.

[0061] Step S220: Obtain the decay count of each pixel based on the aging decay formula, and accumulate the total decay count of each pixel according to the set time interval to obtain the total decay count.

[0062] Step S230: Obtain the aging compensation table of the display panel. Based on the total attenuation count of each pixel, find the corresponding compensation value from the aging compensation table as the brightness compensation data for each pixel.

[0063] This application also provides an apparatus for applying a brightness compensation method for a display panel, such as... Figure 5 As shown, the device 200 includes a partitioning module 210, an acquisition module 220, a processing module 230, and a compensation module 240. The partitioning module 210 divides the display area of ​​the display panel into multiple regions based on preset region partitioning rules. The acquisition module 220 acquires brightness compensation data for the pixels of the display area. The processing module 220 calculates discrete brightness values ​​corresponding to the pixels of the display partitions based on the brightness compensation data, and divides the display areas with discrete values ​​not less than a first threshold into multiple sub-partitions. The compensation module 240 performs brightness compensation on the sub-partitions based on preset brightness compensation rules.

[0064] In some embodiments, the device 200 further includes a judgment module 250. The judgment module 250 is used to judge the discrete value of the brightness corresponding to the pixel in each region, divide the region with a discrete value not less than a first threshold according to the region division rule, and perform the above judgment on all regions obtained based on the region division rule until the region meets the preset rule, so as to use the obtained region as a sub-partition.

[0065] This application also provides a display device, which includes a display panel and an apparatus for applying any of the brightness compensation methods of the display panel mentioned in the above embodiments.

[0066] In at least one embodiment, the display device can be any product or component with display and touch functions, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Implementation of this display device can refer to the embodiments of the apparatus applying the brightness compensation method for the display panel described above; details will not be repeated.

[0067] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A brightness compensation method for a display panel, characterized in that, include: Based on preset area division rules, the display area of ​​the display panel is divided into multiple display partitions; Obtain the brightness compensation data of the pixels in the display area, and calculate the discrete value of the brightness of the pixels in the display partition based on the brightness compensation data. The discrete value of the brightness refers to the degree of discrete deviation of the actual brightness of each display partition relative to the overall average brightness of the display panel at a certain gray level. Based on the region division rules, the display partition with the discrete value not less than the first threshold is divided into multiple regions; Determine the discrete value of the brightness corresponding to the pixel in each region, and divide the regions whose discrete values ​​are not less than the first threshold according to the region division rules; The above judgment is performed on all regions obtained based on the region division rules until the regions meet the preset rules, so that the obtained regions are used as sub-partitions; The sub-partitions are brightness compensated based on preset brightness compensation rules.

2. The brightness compensation method according to claim 1, characterized in that, Also includes: Based on the brightness compensation rule, the display zones with discrete values ​​less than the first threshold are subjected to brightness compensation.

3. The brightness compensation method according to claim 1, characterized in that, The preset rules include: The number of pixels in the region is not greater than the second threshold.

4. The brightness compensation method according to claim 3, characterized in that, The second threshold is 4.

5. The brightness compensation method according to claim 1, characterized in that, The preset rule includes: the number of times the region is divided based on the region division rule is not greater than a third threshold.

6. The brightness compensation method according to claim 5, characterized in that, The third threshold is not less than 3.

7. The brightness compensation method according to any one of claims 1-6, characterized in that, The area division rule includes: dividing the display area into regions that include at least M rows and N columns of pixels arranged in an array.

8. The brightness compensation method according to any one of claims 1-6, characterized in that, The brightness compensation rules include: The average, weighted average, or maximum value of the brightness compensation data of all pixels in the display partition to be compensated is used as the brightness compensation value of the display partition; compensation is then applied to all pixels within the display partition based on the brightness compensation value of the display partition to be compensated; or The average, weighted average, or maximum value of the brightness compensation data of all pixels in the sub-partition to be compensated is used as the brightness compensation value of the sub-partition; the brightness compensation value of the sub-partition to be compensated is applied to all pixels in the sub-partition.

9. The brightness compensation method according to any one of claims 1-6, characterized in that, The process of obtaining the brightness compensation data of the pixels in the display area includes: Obtain the aging degradation formula and aging compensation table for the display panel; The decay count of each pixel is obtained based on the aging decay formula, and the total decay count of each pixel is accumulated at a set time interval to obtain the total decay count. Obtain the aging compensation table of the display panel, and based on the total attenuation count of each pixel, find the corresponding compensation value from the aging compensation table as the brightness compensation data for each pixel.

10. An apparatus for applying a brightness compensation method to a display panel, characterized in that, include: The partitioning module is used to divide the display area of ​​the display panel into multiple display partitions based on preset region partitioning rules; The acquisition module is used to acquire the brightness compensation data of the pixels in the display area, and calculate the discrete value of the brightness of the pixels in the display partition based on the brightness compensation data. The discrete value of the brightness refers to the degree of discrete deviation of the actual brightness of each display partition relative to the overall average brightness of the display panel at a certain gray level. The processing module is configured to divide the display partition with a discrete value not less than a first threshold into multiple regions based on the region division rule, determine the discrete value of the brightness corresponding to the pixel in each region, divide the region with the discrete value not less than the first threshold according to the region division rule, and perform the above determination on all regions obtained based on the region division rule until the region meets the preset rule, so as to use the obtained region as a sub-partition. The compensation module is used to perform brightness compensation on the sub-partitions based on preset brightness compensation rules.

11. The apparatus according to claim 10, characterized in that, Also includes: The judgment module is used to judge the discrete value of the brightness corresponding to the pixel in each region, divide the region whose discrete value is not less than the first threshold according to the region division rule, and perform the above judgment on all the regions obtained based on the region division rule until the region meets the preset rule, so as to use the obtained region as the sub-partition.

12. A display device, characterized in that, include: The display panel and the apparatus for applying the brightness compensation method of the display panel as described in claim 10 or 11.

Images