Compensation method and compensation device for display panel

Abstract

The present invention discloses a compensation method and compensation device for a display panel. The compensation method for a display panel comprises: compensating preset display data of a display panel with at least two different initial compensation parameters respectively, and obtaining a compensated display picture of the display panel after compensation with each of the initial compensation parameters; determining the initial brightness ratio of the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display pictures; determining the final compensation parameters of the display panel according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each initial compensation parameter, and the target brightness ratio of the Mura area and the non-Mura area. The embodiment of the present invention can realize the readjustment of the compensation parameters of the display panel without manual debugging, thereby improving the compensation efficiency, saving manpower, and the determined compensation parameters are more accurate, which can better compensate for Mura.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a compensation method and a compensation device for a display panel. Background Art

[0002] With the development of display technology, people have higher and higher requirements on the display effect of display panels. However, existing display panels have the problem of display unevenness (Mura), which affects the display effect of the display panels. Summary of the invention

[0003] The present invention provides a compensation method and a compensation device for a display panel, which can realize readjustment of compensation parameters of a display panel without manual debugging, thereby improving compensation efficiency and saving manpower, and the determined compensation parameters are more accurate, so that Mura can be better compensated.

[0004] According to one aspect of the present invention, a compensation method for a display panel is provided, comprising:

[0005] Compensating preset display data of the display panel respectively with at least two different initial compensation parameters, and obtaining a compensated display picture of the display panel after compensation with each of the initial compensation parameters;

[0006] Determine an initial brightness ratio between a Mura area and a non-Mura area of ​​the display panel corresponding to each of the compensation display images;

[0007] A final compensation parameter of the display panel is determined according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area.

[0008] Optionally, determining a final compensation parameter of the display panel according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area includes:

[0009] Determine a corresponding relationship between a compensation parameter and a brightness ratio between the Mura area and the non-Mura area according to at least two of the initial compensation parameters and an initial brightness ratio corresponding to each of the initial compensation parameters;

[0010] The final compensation parameter is determined according to the corresponding relationship and the target brightness ratio.

[0011] Optionally, determining a final compensation parameter of the display panel according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area includes:

[0012] The final compensation parameter is determined by interpolation according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area.

[0013] Optionally, before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display images, the method further includes:

[0014] Acquire an initial display screen when the display panel is driven by the preset display data;

[0015] The Mura area and the non-Mura area of ​​the display panel are determined according to the initial display image.

[0016] Optionally, before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display images, the method further includes:

[0017] Acquire an initial display screen when the display panel is driven by the preset display data;

[0018] Determine an initial Mura area and an initial non-Mura area of ​​the display panel according to the initial display picture;

[0019] The initial Mura area and the initial non-Mura area are corrected according to the compensation display image to determine the Mura area and the non-Mura area of ​​the display panel.

[0020] Optionally, determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display images includes:

[0021] A first brightness mean of the Mura area and a second brightness mean of the non-Mura area are determined according to the compensation display image, and an initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to the compensation display image is determined according to the ratio of the first brightness mean to the second brightness mean.

[0022] Optionally, the display panel includes at least two different brightness modes, and the minimum display brightness of different brightness modes is the same, and the maximum display brightness is different;

[0023] Initial compensation parameters corresponding to at least some of the brightness modes are different.

[0024] According to another aspect of the present invention, there is provided a compensation device for a display panel, comprising:

[0025] A compensation display picture acquisition module, used to compensate the preset display data of the display panel with at least two different initial compensation parameters respectively, and to acquire a compensation display picture of the display panel after being compensated with each of the initial compensation parameters;

[0026] A brightness ratio determination module, used to determine the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display images;

[0027] The final compensation parameter determination module is used to determine the final compensation parameter of the display panel according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each initial compensation parameter, and the target brightness ratio between the Mura area and the non-Mura area.

[0028] Optionally, the final compensation parameter determination module includes:

[0029] a corresponding relationship determining unit, configured to determine a corresponding relationship between a compensation parameter and a brightness ratio between the Mura area and the non-Mura area according to at least two of the initial compensation parameters and an initial brightness ratio corresponding to each of the initial compensation parameters;

[0030] A final compensation parameter determining unit is used to determine the final compensation parameter according to the corresponding relationship and the target brightness ratio.

[0031] Optionally, the final compensation parameter determination module is specifically used for:

[0032] The final compensation parameter is determined by interpolation according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area.

[0033] The embodiment of the present invention compensates the preset display data of the display panel with at least two different initial compensation parameters, and obtains the compensated display picture of the display panel after compensation with each of the initial compensation parameters; determines the initial brightness ratio of the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display pictures; and determines the final compensation parameters of the display panel according to at least two initial compensation parameters, the initial brightness ratio corresponding to each initial compensation parameter, and the target brightness ratio of the Mura area and the non-Mura area. The embodiment of the present invention can realize the readjustment of the compensation parameters of the display panel without manual debugging, improves the compensation efficiency, saves manpower, and determines the final compensation parameters corresponding to the target brightness ratio by at least two initial compensation parameters and the brightness ratio of the Mura area and the non-Mura area corresponding to the initial compensation parameters, that is, determines the final compensation parameters according to the actual compensation effect, and the compensation parameters determined are more accurate, and can better compensate for Mura.

[0034] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a schematic diagram of mura distribution of a display panel provided by an embodiment of the present invention;

[0037] Figure 2 is a flow chart of a compensation method for a display panel provided by an embodiment of the present invention;

[0038] Figure 3 is a curve diagram of the corresponding relationship between a compensation parameter and a brightness ratio provided by an embodiment of the present invention;

[0039] Figure 4 It is a schematic diagram of a compensation device for a display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] As mentioned in the background art, existing display panels have a Mura problem. When repairing the Mura problem in the prior art, a set of global compensation parameters is manually debugged to repair the display panels of the same batch. Figure 1 is a schematic diagram of mura distribution of a display panel provided by an embodiment of the present invention, with reference to Figure 1 For the display panels of the same batch, the severity of Mura generally shows a normal distribution trend. For display panels with inconspicuous Mura features and slight Mura, the global compensation parameters can be used to repair them. However, for display panels with severe Mura, the global compensation parameters are not applicable and the parameters need to be readjusted according to the severity of Mura. Since the severity of Mura of each display panel is different, the compensation parameters need to be debugged for each display panel. It takes a long time to debug the compensation parameters of each display panel manually.

[0043] Based on the above problems, an embodiment of the present invention provides a compensation method for a display panel. Figure 2 is a flow chart of a compensation method for a display panel provided by an embodiment of the present invention, with reference to Figure 2 , the method comprising:

[0044] S110, respectively compensating preset display data of the display panel with at least two different initial compensation parameters, and obtaining a compensated display picture of the display panel after compensation with each of the initial compensation parameters.

[0045] Among them, the preset display data can be a preset grayscale, or it can be the driving data corresponding to the preset grayscale. The preset grayscale is the grayscale where the display panel Mura is more serious. For example, the preset grayscale can be a grayscale such as 64 grayscale. The initial compensation parameter can be set according to experience, and the difference between two adjacent initial compensation parameters can be a set value. For example, when three initial compensation parameters are set, the first initial compensation parameter can be added to the set value to obtain the second initial compensation parameter, and the second initial compensation parameter can be added to the set value to obtain the third initial compensation parameter. After an initial compensation parameter is written to the display panel, the display panel compensates the preset display data with the initial compensation parameter, obtains the compensated display picture after the display panel is compensated, and then the next initial compensation parameter is written to the display panel, and the next initial compensation parameter is continued to be obtained. After compensating the preset display data, the display panel's compensated display picture, and so on, obtains the compensated display picture corresponding to each initial compensation parameter. The display panel can compensate the preset display data by multiplying, dividing, subtracting or adding the preset display data and the initial compensation parameter, etc., which is not specifically limited in this embodiment. In addition, an optical acquisition device such as a camera can be used to collect the compensated display picture of the display panel.

[0046] S120 , determining an initial brightness ratio between a Mura area and a non-Mura area of ​​the display panel corresponding to each of the compensated display images.

[0047] The Mura area is an area in the display panel where the display brightness is greatly different from other areas, and the non-Mura area is an area outside the Mura area. The display panel may include one, two or more Mura areas, and each Mura area includes at least one pixel unit.

[0048] Specifically, the display panel display can be directly driven by the preset display data to obtain the display picture, and the Mura area and the non-Mura area can be determined according to the display picture. The Mura area and the non-Mura area can also be determined according to the compensation display picture. The method of determining the Mura area and the non-Mura area is not specifically limited in this embodiment. The brightness mean of the picture to be compensated in the Mura area can be calculated, and the brightness mean of the non-Mura area can be calculated. The initial brightness ratio of the Mura area and the non-Mura area is obtained by dividing the brightness mean of the Mura area and the brightness mean of the non-Mura area. In addition, the first brightness ratio of the maximum brightness of the picture to be compensated in the Mura area to the maximum brightness of the non-Mura area can be calculated, the second brightness ratio of the minimum brightness of the picture to be compensated in the Mura area to the minimum brightness of the non-Mura area can be calculated, and the third brightness ratio of the brightness mean of the Mura area to the brightness mean of the non-Mura area can be calculated. The initial brightness ratio of the Mura area and the non-Mura area can include at least two of the first brightness ratio, the second brightness ratio and the third brightness ratio.

[0049] S130, determining a final compensation parameter of the display panel according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area.

[0050] The target brightness ratio may be 1 or may be set to other values ​​as required. For example, when the initial brightness ratio of the mura area and the non-mura area is the ratio of the average brightness of the mura area to the average brightness of the non-mura area, the target brightness ratio may be 1. When the initial brightness ratio of the mura area and the non-mura area includes at least two of the first brightness ratio, the second brightness ratio and the third brightness ratio, the target brightness ratio may also include at least two target ratios. For example, the initial brightness ratio of the mura area and the non-mura area includes the first brightness ratio, the second brightness ratio and the third brightness ratio. The target brightness ratio may include the first target ratio, the second target ratio and the third target ratio. The first target ratio is the target brightness ratio corresponding to the first brightness ratio, the second target ratio is the target brightness ratio corresponding to the second brightness ratio, the third target ratio is the target brightness ratio corresponding to the third brightness ratio, and the third target ratio may be set to 1. The first target ratio and the second target ratio may be set to 1 or a value close to 1. The final compensation parameter is the compensation parameter when the brightness ratio of the mura area and the non-mura area is equal to the target brightness ratio.

[0051] Specifically, each initial compensation parameter corresponds to a compensation display screen, and the compensation display screen corresponding to the initial compensation parameter is the compensation display screen displayed by the display panel after the initial compensation parameter is compensated, and the initial brightness ratio corresponding to the initial compensation parameter is the initial brightness ratio of the compensation display screen corresponding to the initial compensation parameter. The correspondence between the compensation parameter and the brightness ratio of the Mura area and the non-Mura area can be determined based on at least two initial compensation parameters and the initial brightness ratio corresponding to the at least two initial compensation parameters, and then the compensation parameter corresponding to the target brightness ratio is determined based on the target brightness ratio and the correspondence, and the compensation parameter is determined as the final compensation parameter of the display panel. In addition, the type of correspondence between the compensation parameter and the brightness ratio of the Mura area and the non-Mura area can also be determined based on experience or based on multiple other display panels of the same batch, and the compensation parameter corresponding to the target brightness ratio is directly interpolated for the current display panel based on at least two initial compensation parameters, the initial brightness ratio corresponding to the at least two initial compensation parameters, and the type of correspondence.

[0052] Exemplarily, the preset display data is compensated with a first compensation parameter to obtain a first display picture of the display panel after compensation; the preset display data is compensated with a second compensation parameter to obtain a second display picture of the display panel after compensation; a first initial brightness ratio between the Mura area and the non-Mura area is determined according to the first display picture, and a second initial brightness ratio between the Mura area and the non-Mura area is determined according to the second display picture; a correspondence between the compensation parameter and the brightness ratio between the Mura area and the non-Mura area is determined according to the first compensation parameter, the second compensation parameter, the first initial brightness ratio and the second initial brightness ratio; and a final compensation parameter is determined according to the corresponding relationship and the target brightness ratio.

[0053] The embodiment of the present invention compensates the preset display data of the display panel with at least two different initial compensation parameters, and obtains the compensated display picture of the display panel after compensation with each of the initial compensation parameters; determines the initial brightness ratio of the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display pictures; and determines the final compensation parameters of the display panel according to at least two initial compensation parameters, the initial brightness ratio corresponding to each initial compensation parameter, and the target brightness ratio of the Mura area and the non-Mura area. The embodiment of the present invention can realize the readjustment of the compensation parameters of the display panel without manual debugging, improves the compensation efficiency, saves manpower, and determines the final compensation parameters corresponding to the target brightness ratio through at least two initial compensation parameters and the initial brightness ratio of the Mura area and the non-Mura area corresponding to the initial compensation parameters, that is, determines the final compensation parameters according to the actual compensation effect, and the compensation parameters determined are more accurate, and can better compensate for Mura.

[0054] It should be noted that a preset display data can be set for a display panel, and the preset display data is compensated by at least two initial compensation parameters, and compensated display pictures are obtained respectively, and then the final compensation parameters are determined. Two or more preset display data can be set for a display panel, and for the same preset display data, the preset display data is compensated by at least two initial compensation parameters, and the compensated display picture after compensation is obtained. The initial brightness ratio is determined according to the compensated display picture, and the final compensation parameter corresponding to the preset display data is determined according to at least two initial compensation parameters, the initial brightness ratio and the target brightness ratio. By analogy, the final compensation parameter corresponding to each preset display data can be determined. When compensating the display panel, different final compensation parameters are used for driving data in different data ranges. For example, if the driving data to be displayed is close to a preset display data, the final compensation parameter corresponding to the preset display data can be selected for compensation when the driving data is used to drive the display panel to display.

[0055] Optionally, determining a final compensation parameter of the display panel according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area includes:

[0056] Determine a corresponding relationship between a compensation parameter and a brightness ratio between the Mura area and the non-Mura area according to at least two of the initial compensation parameters and an initial brightness ratio corresponding to each of the initial compensation parameters;

[0057] The final compensation parameter is determined according to the corresponding relationship and the target brightness ratio.

[0058] Specifically, multiple initial compensation parameters can be used to compensate the preset display data respectively, and multiple compensated display images of the display panel after compensation can be obtained, and the initial brightness ratio of the Mura area and the non-Mura area of ​​each initial compensation image can be determined. The corresponding relationship between the compensation parameters and the brightness ratio of the Mura area and the non-Mura area can be determined by fitting based on the multiple initial compensation parameters and the initial brightness ratios corresponding to the multiple initial compensation parameters respectively, and then the compensation parameters corresponding to the target brightness ratio are calculated based on the target brightness ratio and the corresponding relationship, and the compensation parameters are determined as the final compensation parameters.

[0059] The correspondence between the compensation parameter and the brightness ratio of the mura area and the non-mura area represents the mapping relationship between the compensation parameter and the brightness ratio of the mura area and the non-mura area. The correspondence can be expressed by a formula or in any other form. This embodiment does not make any specific limitations. In addition, the correspondence can be a linear relationship or a non-linear relationship. This embodiment does not make any specific limitations. The specific correspondence is determined based on the fitting result.

[0060] For example, Figure 3 is a corresponding relationship diagram between a compensation parameter and a brightness ratio provided by an embodiment of the present invention, Figure 3 It can be seen that the compensation parameter and the brightness ratio are basically in a linear relationship. The linear relationship between the compensation parameter and the brightness ratio can be obtained by fitting multiple points determined by the initial compensation parameters and the initial brightness ratio. Then, the compensation parameter corresponding to the target brightness ratio can be calculated based on the linear relationship and the target brightness ratio.

[0061] In addition, when the initial brightness ratio of the mura area and the non-mura area includes at least two of the first brightness ratio, the second brightness ratio and the third brightness ratio, the first corresponding relationship between the compensation parameter and the first brightness ratio can be determined according to the multiple initial compensation parameters and the first brightness ratios corresponding to the multiple initial compensation parameters, and the first target compensation parameter corresponding to the first target ratio can be determined according to the first target ratio and the first corresponding relationship. The second corresponding relationship between the compensation parameter and the second brightness ratio can be determined according to the multiple initial compensation parameters and the second brightness ratios corresponding to the multiple initial compensation parameters, and the second target compensation parameter corresponding to the second target ratio can be determined according to the second target ratio and the second corresponding relationship. By analogy, the corresponding relationship between each brightness ratio and the compensation parameter can be calculated, and the target compensation parameter corresponding to each target ratio can be obtained, and the final compensation parameter can be comprehensively determined according to the multiple target compensation parameters.

[0062] In this embodiment, the corresponding relationship between the compensation parameter and the brightness ratio of the Mura area and the non-Mura area is first determined according to at least two different initial compensation parameters and the initial brightness ratio of the Mura area and the non-Mura area of ​​the compensated display screen corresponding to each initial compensation parameter. Since the corresponding relationship reflects the actual corresponding relationship between the compensation parameter and the brightness ratio, the final compensation parameter determined according to the corresponding relationship and the target brightness ratio is more accurate. When the display panel is compensated by using the final compensation parameter, the actual brightness ratio is the same as or close to the target brightness ratio, and the Mura can be better compensated.

[0063] Optionally, determining a final compensation parameter of the display panel according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area includes:

[0064] The final compensation parameter is determined by interpolation according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area.

[0065] The final compensation parameters can be determined by linear interpolation or other interpolation methods. Exemplarily, the preset display data is compensated with the first compensation parameter to obtain the first display screen of the display panel after compensation; the preset display data is compensated with the second compensation parameter to obtain the second display screen of the display panel after compensation; the first initial brightness ratio of the Mura area and the non-Mura area is determined according to the first display screen, and the second initial brightness ratio of the Mura area and the non-Mura area is determined according to the second display screen; the final compensation parameters are determined by linear interpolation according to the first compensation parameter, the second compensation parameter, the first initial brightness ratio, the second initial brightness ratio and the target brightness ratio.

[0066] In addition, the interpolation type may be determined based on other display panels in the same batch, and the interpolation type may be directly used to interpolate the current display panel. In this embodiment, the final compensation parameters may be determined more quickly by using the interpolation method.

[0067] Optionally, before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display images, the method further includes:

[0068] Acquire an initial display screen when the display panel is driven by the preset display data;

[0069] The Mura area and the non-Mura area of ​​the display panel are determined according to the initial display image.

[0070] Specifically, the Mura area and the non-Mura area can be determined by the pyramid method, or by the deep learning method. The Mura area and the non-Mura area can be quickly determined based on the initial display screen corresponding to the preset display data, and each compensation display screen uses the Mura area and the non-Mura area determined based on the initial display screen, that is, each compensation display screen uses the same Mura area and the non-Mura area, and the calculation of the initial brightness mean is simpler, which can increase the compensation speed.

[0071] Optionally, before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display images, the method further includes:

[0072] Acquire an initial display screen when the display panel is driven by the preset display data;

[0073] Determine an initial Mura area and an initial non-Mura area of ​​the display panel according to the initial display picture;

[0074] The initial Mura area and the initial non-Mura area are corrected according to the compensation display image to determine the Mura area and the non-Mura area of ​​the display panel.

[0075] Specifically, the display data in the initial Mura area in the compensation display screen can be compared with the display data in the initial non-Mura area, and the data with a large difference from the display data in the initial non-Mura area is retained as the Mura data. The area corresponding to the Mura data is the Mura area, and the area outside the Mura area is the non-Mura area.

[0076] All compensation display images may use the same Mura area and non-Mura area. For example, the display data in the initial Mura area of ​​each compensation display image may be compared with the display data in the initial non-Mura area, and the display data in the initial Mura area of ​​each compensation display image that is significantly different from the initial non-Mura area is retained as the Mura data. The sum of the areas corresponding to the Mura data of all compensation display image panels is taken as the Mura area, and all compensation display images use the Mura area to calculate the initial brightness ratio between the Mura area and the non-Mura area.

[0077] In addition, different compensation display screens can also use different Mura areas and non-Mura areas. For example, the display data in the initial Mura area of ​​a compensation display screen is compared with the display data in the initial non-Mura area, and the area corresponding to the Mura data of the compensation display screen panel is used as the Mura area corresponding to the compensation display screen. The brightness ratio of the Mura area and the non-Mura area is calculated based on the Mura area and non-Mura area corresponding to the compensation display screen. The brightness ratio of other compensation display screens is determined in the same way.

[0078] This embodiment corrects the initial Mura area and the initial non-Mura area by compensating the display image, so that the Mura area and the non-Mura area of ​​the display panel finally determined are more consistent with the display condition after compensation using the initial compensation parameters, thereby making the calculated brightness ratio of the Mura area and the non-Mura area more accurate, and the final compensation parameters determined according to the compensation parameters and the brightness ratio are more accurate.

[0079] Optionally, determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensated display images includes:

[0080] A first brightness mean of the Mura area and a second brightness mean of the non-Mura area are determined according to the compensation display image, and an initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to the compensation display image is determined according to the ratio of the first brightness mean to the second brightness mean.

[0081] Specifically, the first brightness mean can better reflect the display brightness of the Mura area, the second brightness mean can better reflect the display brightness of the non-Mura area, and the calculation speed of the mean is faster. Therefore, the initial brightness ratio of the Mura area and the non-Mura area is determined by the ratio of the first brightness mean to the second brightness mean. The calculation speed is faster and can more accurately reflect the relative brightness of the Mura area and the non-Mura area.

[0082] Optionally, the display panel includes at least two different brightness modes, and the minimum display brightness of different brightness modes is the same, and the maximum display brightness is different;

[0083] Initial compensation parameters corresponding to at least some of the brightness modes are different.

[0084] Among them, the display panel may include multiple brightness modes, and the display brightness ranges corresponding to different brightness modes are different. The minimum display brightness of different brightness modes is the same, which can be 0nit, and the maximum display brightness of different brightness modes is different, for example, the maximum display brightness can be 2nit, 10nit, 50nit, 100nit or 500nit, etc. The grayscale ranges of different brightness modes are the same, for example, they can all be 0-255 grayscales, so the brightness corresponding to the same grayscale in different brightness modes is different, and the driving data corresponding to the same grayscale in different brightness modes, so the compensation parameters of different brightness modes are different. At least some of the initial compensation parameters corresponding to the brightness modes are different, which can be that one initial compensation parameter of some brightness modes is different from that of other brightness modes, two initial compensation parameters are different, or multiple initial compensation parameters are different, or at least one initial compensation parameter of any two brightness modes is different.

[0085] Specifically, at least two different initial compensation parameters can be determined for each brightness mode, and at least two different initial compensation parameters corresponding to each brightness mode are used for compensation, and a compensated display image is obtained, and the brightness ratio between the Mura area and the non-Mura area of ​​the compensated display image is determined, so as to determine the final compensation parameters corresponding to the brightness mode. In this embodiment, initial compensation parameters are set for each brightness mode, and final compensation parameters are determined, so that the Mura of each brightness mode can be better compensated.

[0086] The embodiment of the present invention further provides a compensation device for a display panel. Figure 4 is a schematic diagram of a compensation device for a display panel provided by an embodiment of the present invention, with reference to Figure 4 , the compensation device 200 of the display panel includes:

[0087] The compensated display picture acquisition module 210 is used to compensate the preset display data of the display panel with at least two different initial compensation parameters respectively, and acquire the compensated display picture of the display panel after being compensated with each of the initial compensation parameters;

[0088] A brightness ratio determination module 220, configured to determine an initial brightness ratio between a Mura area and a non-Mura area of ​​the display panel corresponding to each of the compensated display images;

[0089] The final compensation parameter determination module 230 is used to determine the final compensation parameter of the display panel according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each initial compensation parameter, and the target brightness ratio between the Mura area and the non-Mura area.

[0090] Optionally, the final compensation parameter determination module 230 includes:

[0091] a corresponding relationship determining unit, configured to determine a corresponding relationship between a compensation parameter and a brightness ratio between the Mura area and the non-Mura area according to at least two of the initial compensation parameters and an initial brightness ratio corresponding to each of the initial compensation parameters;

[0092] A final compensation parameter determining unit is used to determine the final compensation parameter according to the corresponding relationship and the target brightness ratio.

[0093] Optionally, the final compensation parameter determination module 230 is specifically used to determine the final compensation parameter by interpolation according to at least two of the initial compensation parameters, an initial brightness ratio corresponding to each initial compensation parameter, and a target brightness ratio between the Mura area and the non-Mura area.

[0094] Optionally, the device further comprises:

[0095] An initial picture acquisition module, used for acquiring an initial display picture when the display panel is driven by the preset display data before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensation display pictures;

[0096] The first Mura area and non-Mura area determination module is used to determine the Mura area and non-Mura area of ​​the display panel according to the initial display image.

[0097] Optionally, the device further comprises:

[0098] An initial picture acquisition module, used for acquiring an initial display picture when the display panel is driven by the preset display data before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensation display pictures;

[0099] An initial Mura area determination module, used to determine an initial Mura area and an initial non-Mura area of ​​the display panel according to the initial display picture;

[0100] The second Mura area and non-Mura area determination module is used to correct the initial Mura area and the initial non-Mura area according to the compensation display image, and determine the Mura area and non-Mura area of ​​the display panel.

[0101] Optionally, the brightness ratio determination module 220 is specifically used to determine a first brightness mean of the Mura area and a second brightness mean of the non-Mura area according to the compensation display image, and determine an initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to the compensation display image according to the ratio of the first brightness mean to the second brightness mean.

[0102] Optionally, the display panel includes at least two different brightness modes, and the minimum display brightness of different brightness modes is the same, and the maximum display brightness is different; and the initial compensation parameters corresponding to at least some of the brightness modes are different.

[0103] The compensation device of the display panel provided by the present invention and the compensation method of the display panel provided by any embodiment of the present invention belong to the same inventive concept and have the same beneficial effects. For technical details not detailed in this embodiment, please refer to the compensation method of the display panel described in any embodiment of the present invention.

[0104] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0105] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compensation method for a display panel, characterized in that: include: Compensating preset display data of the display panel respectively with at least two different initial compensation parameters, and obtaining a compensated display picture of the display panel after compensation with each of the initial compensation parameters; Determine an initial brightness ratio between a Mura area and a non-Mura area of ​​a display panel corresponding to each of the compensation display images; determine a first brightness mean value of a Mura area and a second brightness mean value of a non-Mura area according to the compensation display image, and determine an initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to the compensation display image according to a ratio of the first brightness mean value to the second brightness mean value; A final compensation parameter of the display panel is determined according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each of the initial compensation parameters, and a target brightness ratio between the Mura area and the non-Mura area.

2. The method according to claim 1, characterized in that Determining a final compensation parameter of the display panel according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each of the initial compensation parameters, and a target brightness ratio between the Mura area and the non-Mura area, comprising: Determine a corresponding relationship between a compensation parameter and a brightness ratio between the Mura area and the non-Mura area according to at least two of the initial compensation parameters and the initial brightness ratio corresponding to each of the initial compensation parameters; The final compensation parameter is determined according to the corresponding relationship and the target brightness ratio.

3. The method according to claim 1, characterized in that: Determining a final compensation parameter of the display panel according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each of the initial compensation parameters, and a target brightness ratio between the Mura area and the non-Mura area, comprising: The final compensation parameter is determined by interpolation according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each of the initial compensation parameters, and a target brightness ratio between the Mura area and the non-Mura area.

4. The method according to claim 1, characterized in that: Before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensation display images, the method further includes: Acquire an initial display screen when the display panel is driven by the preset display data; The Mura area and the non-Mura area of ​​the display panel are determined according to the initial display image.

5. The method according to claim 1, characterized in that Before determining the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensation display images, the method further includes: Acquire an initial display screen when the display panel is driven by the preset display data; Determine an initial Mura area and an initial non-Mura area of ​​the display panel according to the initial display picture; The initial Mura area and the initial non-Mura area are corrected according to the compensation display image to determine the Mura area and the non-Mura area of ​​the display panel.

6. The method according to claim 1, characterized in that The display panel includes at least two different brightness modes, and the minimum display brightness of different brightness modes is the same, and the maximum display brightness is different; Initial compensation parameters corresponding to at least some of the brightness modes are different.

7. A compensation device for a display panel, characterized in that: include: A compensation display picture acquisition module, used to compensate the preset display data of the display panel with at least two different initial compensation parameters respectively, and to acquire a compensation display picture of the display panel after being compensated with each of the initial compensation parameters; A brightness ratio determination module, used to determine the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to each of the compensation display pictures; determine a first brightness mean of the Mura area and a second brightness mean of the non-Mura area according to the compensation display picture, and determine the initial brightness ratio between the Mura area and the non-Mura area of ​​the display panel corresponding to the compensation display picture according to the ratio of the first brightness mean to the second brightness mean; The final compensation parameter determination module is used to determine the final compensation parameter of the display panel according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each of the initial compensation parameters, and the target brightness ratio between the Mura area and the non-Mura area.

8. The device according to claim 7, characterized in that The final compensation parameter determination module includes: a corresponding relationship determining unit, configured to determine a corresponding relationship between a compensation parameter and a brightness ratio between the Mura area and the non-Mura area according to at least two of the initial compensation parameters and the initial brightness ratio corresponding to each of the initial compensation parameters; A final compensation parameter determining unit is used to determine the final compensation parameter according to the corresponding relationship and the target brightness ratio.

9. The device according to claim 7, characterized in that The final compensation parameter determination module is specifically used for: The final compensation parameter is determined by interpolation according to at least two of the initial compensation parameters, the initial brightness ratio corresponding to each of the initial compensation parameters, and a target brightness ratio between the Mura area and the non-Mura area.

Images