Display compensation method of display panel and display device

Abstract

The invention provides a display compensation method of a display panel and a display device, and the method comprises the steps: obtaining grouping information corresponding to a plurality of sub-pixels in the display panel, so as to determine the distribution positions of a plurality of sub-pixels included in a reference sub-pixel group and the distribution positions of a plurality of sub-pixels included in a plurality of to-be-adjusted sub-pixel groups; the display parameters corresponding to the plurality of sub-pixels included in each to-be-adjusted sub-pixel group are compensated, so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each to-be-adjusted sub-pixel group and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is smaller than a preset value. The display effect of the plurality of sub-pixels included in the to-be-adjusted sub-pixel group is close to the display effect of the plurality of sub-pixels included in the reference sub-pixel group.

Description

Technical Field

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

[0002] In the direct display technology of light-emitting devices, in order to ensure the consistency of the brightness and color of the display panel, the light point chips are usually partitioned and screened according to certain rules (i.e., divided into bins, such as dividing the chips into different bins according to the wavelength band; divided into different bins according to the brightness range, etc.). The wavelengths and brightness of different bins are different. The difference in wavelength brings about the difference in color, which will cause the difference in perception. For chips with different bins, the effect of non-binding point grayscale will be poor, so it is necessary to introduce the concept of multi-grayscale correction. However, in actual correction, it is found that even with the use of multi-grayscale correction, the effect is still not very good. The main reason is that the linearity of chips with different bins is more different, and adding more grayscale binding points will require more hardware resources. Summary of the invention

[0003] The embodiments of the present invention provide a display compensation method and a display device for a display panel, which can improve the problem of inconsistent display brightness and chromaticity at different grayscales of a display screen due to large differences in linearity of chips in different bins.

[0004] An embodiment of the present invention provides a display compensation method for a display panel, comprising: obtaining grouping information corresponding to multiple sub-pixels in the display panel to determine the distribution positions of multiple sub-pixels included in a reference sub-pixel group and the distribution positions of multiple sub-pixels included in multiple sub-pixel groups to be adjusted; and compensating for display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted, respectively, so that the difference between the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the multiple sub-pixels included in the reference sub-pixel group is less than a preset value.

[0005] An embodiment of the present invention provides a display device, including a display panel, a storage module and a compensation module. The display panel includes a plurality of sub-pixels, the storage module is electrically connected to the display panel, and the compensation module is electrically connected to the display panel and the storage module. The compensation module is configured to obtain grouping information corresponding to the plurality of sub-pixels to determine the distribution positions of the plurality of sub-pixels included in the reference sub-pixel group and the distribution positions of the plurality of sub-pixels included in the plurality of sub-pixel groups to be adjusted, and to compensate the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted according to the data stored in the storage module; the storage module is configured to store the relationship between the binding point grayscale and the display compensation value under different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, and the relationship between the grayscale and the display compensation value under different non-binding point grayscales corresponding to each of the sub-pixel groups to be adjusted.

[0006] The display compensation method and display device of the display panel provided by the present invention obtain the grouping information corresponding to multiple sub-pixels in the display panel to determine the distribution positions of multiple sub-pixels included in the reference sub-pixel group and the distribution positions of multiple sub-pixels included in the multiple sub-pixel groups to be adjusted; respectively compensate the display parameters corresponding to the multiple sub-pixels included in each sub-pixel group to be adjusted so that the difference between the display parameters corresponding to the multiple sub-pixels included in each sub-pixel group to be adjusted and the reference display parameters of the multiple sub-pixels included in the reference sub-pixel group is less than a preset value, so that the display effect of the multiple sub-pixels included in the sub-pixel group to be adjusted is similar to the display effect of the multiple sub-pixels included in the reference sub-pixel group, so that the display effects of the lamp point chips distributed in different areas and belonging to different bin files are close to the same, the repair effects of the lamp point chips in different bin files at different positions are improved, and the brightness and chromaticity consistency of the lamp point chips in different bin files under different grayscales is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0008] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0009] Figure 2A to Figure 2D is a flow chart of a display compensation method provided by an embodiment of the present invention;

[0010] Figure 3 is a flow chart of a method for generating a display compensation table provided by an embodiment of the present invention;

[0011] Figure 4 It is a schematic diagram of the structure of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only configured to illustrate and explain the present invention, and are not configured to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0013] Specifically, Figure 1 is a schematic diagram of the structure of a display panel provided by an embodiment of the present invention, Figure 2A to Figure 2D : is a flow chart of a display compensation method provided by an embodiment of the present invention. Wherein, Pi represents a sub-pixel, region A, region B and region C represent a sub-pixel group to be adjusted, and region D represents a reference sub-pixel group.

[0014] The present application provides a display compensation method for a display panel, which is used in the display panel.

[0015] Optionally, the display panel comprises a self-luminous display panel. The display panel comprises a plurality of sub-pixels, each of which comprises a light-emitting device. The light-emitting device comprises at least one of an organic light-emitting diode, a sub-millimeter light-emitting diode, and a micro light-emitting diode.

[0016] Please continue reading Figure 2A , the display compensation method comprises:

[0017] Acquire grouping information corresponding to a plurality of sub-pixels in the display panel to determine distribution positions of a plurality of sub-pixels included in a reference sub-pixel group and distribution positions of a plurality of sub-pixels included in a plurality of sub-pixel groups to be adjusted;

[0018] Display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted are compensated respectively so that the difference between the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the multiple sub-pixels included in the reference sub-pixel group is less than a preset value.

[0019] Wherein, the display parameter includes at least one of brightness and chromaticity.

[0020] Among them, the multiple sub-pixels can be grouped in advance (that is, the multiple sub-pixels can be divided into a reference sub-pixel group and a plurality of sub-pixel groups to be adjusted), and the grouping information can be stored in a storage module, so that when executing the display compensation method, the grouping information stored in the storage module can be read by the compensation module to determine the distribution positions of the multiple sub-pixels included in the reference sub-pixel group and the distribution positions of the multiple sub-pixels included in the plurality of sub-pixel groups to be adjusted.

[0021] Accordingly, please continue to refer to Figure 2B , before the step of obtaining the grouping information corresponding to the plurality of sub-pixels in the display panel to determine the distribution positions of the plurality of sub-pixels included in the reference sub-pixel group and the distribution positions of the plurality of sub-pixels included in the plurality of sub-pixel groups to be adjusted, comprising:

[0022] According to display differences of the multiple sub-pixels in the display panel corresponding to the monochrome display pictures, the multiple sub-pixels are grouped to obtain multiple sub-pixel groups;

[0023] The reference sub-pixel group and the sub-pixel groups to be adjusted are determined from the sub-pixel groups according to the distribution areas of the sub-pixels included in each sub-pixel group.

[0024] The monochrome display screen includes a red display screen, a green display screen, and a blue display screen.

[0025] Optionally, when the red sub-pixel is mixed with the green sub-pixel and the blue sub-pixel under the white display screen equal to the grayscale of 255 (i.e., R+G+B=W), it is only necessary to group based on the red display screen, the green display screen, and the blue display screen, and then perform display compensation based on the grouping information of the red display screen, the green display screen, and the blue display screen. However, when R+G+B≠W, it is necessary to group based on the red display screen, the green display screen, the blue display screen, and the white display screen, and then perform display compensation based on the grouping information of the red display screen, the green display screen, the blue display screen, and the white display screen.

[0026] Optionally, since the brightness and chromaticity differences of different bins can be observed by human eyes, the display differences of the monochrome display images corresponding to the multiple sub-pixels can be directly identified by human eyes to realize grouping of the multiple sub-pixels. In addition, the display differences of the monochrome display images corresponding to the multiple sub-pixels can also be identified by a brightness and chromaticity detection instrument.

[0027] Optionally, the one corresponding to the largest distribution area among the plurality of sub-pixel groups may be used as the reference sub-pixel group to reduce the number of the plurality of sub-pixels that need to be compensated.

[0028] Accordingly, please continue to refer to Figure 2C The step of determining the reference sub-pixel group and the plurality of sub-pixel groups to be adjusted from the plurality of sub-pixel groups according to the distribution areas of the plurality of sub-pixels included in each of the sub-pixel groups comprises:

[0029] According to the distribution areas of the plurality of sub-pixels included in each of the sub-pixel groups, determining the sizes of the distribution areas corresponding to the plurality of sub-pixel groups;

[0030] The one with the largest distribution area is selected from the plurality of sub-pixel groups as the reference sub-pixel group, and the remaining plurality of sub-pixel groups are correspondingly selected as the plurality of sub-pixel groups to be adjusted.

[0031] Optionally, devices such as a central processing unit and a timing controller may be used to calculate and determine the distribution area corresponding to each of the sub-pixel groups, as well as grouping based on the size of the distribution area.

[0032] After the reference sub-pixel group and the plurality of sub-pixel groups to be adjusted are determined, the distribution positions of the plurality of sub-pixels included in the reference sub-pixel group are determined, and the distribution positions of the plurality of sub-pixels included in the plurality of sub-pixel groups to be adjusted are also determined. Therefore, by combining the grouping information stored in the storage module with the pixel coordinate information input by the front end, the grouping information corresponding to the plurality of sub-pixels can be determined, and then the distribution positions of the plurality of sub-pixels included in the sub-pixel group and the distribution positions of the plurality of sub-pixels included in the plurality of sub-pixel groups to be adjusted are determined.

[0033] Optionally, the storage module includes a volatile or non-volatile memory; the compensation module includes an image processor, a timing controller, a central processing unit, etc.

[0034] Optionally, the preset value may be equal to 0, so that the display effect corresponding to the multiple sub-pixels included in each sub-pixel group to be adjusted is consistent with the display effect of the multiple sub-pixels included in the reference sub-pixel group. However, in actual applications, affected by the accuracy of parameter calculation and other aspects, the display effect corresponding to the multiple sub-pixels included in each sub-pixel group to be adjusted may be difficult to maintain complete consistency with the display effect of the multiple sub-pixels included in the reference sub-pixel group. Therefore, the preset value may be determined according to actual experiments.

[0035] Optionally, the relationship between the binding point grayscale and the display compensation value under the different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted can be called, and the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted can be compensated respectively (such as area A, area B and area C respectively call their corresponding display compensation tables to make the display parameters of area A, area B and area C approach the display parameters of area D). The relationship between the binding point grayscale and the display compensation value under the different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted can be obtained based on the reference gamma curve corresponding to the reference sub-pixel group, and the relationship between the binding point grayscale and the display compensation value under the different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted can be stored in the storage module in the form of a display compensation table, so that when display compensation is performed on the display panel, the display compensation table can be called by the compensation module to realize compensation of the display parameters of the multiple sub-pixels included in the corresponding sub-pixel group to be adjusted.

[0036] Accordingly, please continue to refer to Figure 2D , before the step of respectively compensating the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is less than a preset value, the step includes:

[0037] Measuring and obtaining a reference gamma curve corresponding to the reference sub-pixel group and a gamma curve to be adjusted corresponding to the plurality of sub-pixel groups to be adjusted;

[0038] According to the difference between the reference gamma curve and the multiple gamma curves to be adjusted, the display parameters corresponding to each of the sub-pixel groups to be adjusted under different binding point grayscales are adjusted to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted under different binding point grayscales.

[0039] Wherein, based on the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, the display parameters corresponding to each of the sub-pixel groups to be adjusted under different binding point grayscales are adjusted, including the adjustment of brightness and the adjustment of chromaticity. Optionally, the brightness adjustment can be achieved by a pulse width modulation method, and the chromaticity adjustment can be achieved by adjusting the ratio of red sub-pixels, green sub-pixels and blue sub-pixels.

[0040] Optionally, the reference gamma curve and the gamma curve to be adjusted can be measured based on a monochrome display screen. Optionally, the binding point grayscale includes 25 grayscale, 60 grayscale, 128 grayscale, 225 grayscale and 255 grayscale.

[0041] Accordingly, the step of adjusting the display parameters corresponding to each of the sub-pixel groups to be adjusted at different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, so as to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted at different binding point grayscales, includes:

[0042] According to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, adjusting the brightness and chromaticity corresponding to each of the sub-pixel groups to be adjusted corresponding to the different binding point grayscales;

[0043] At each of the binding point grayscales of the different binding point grayscales, when the deviation between the brightness corresponding to each of the plurality of sub-pixel groups to be adjusted and the reference brightness corresponding to the reference sub-pixel group is less than a first preset value, the brightness adjustment amount corresponding to the sub-pixel group to be adjusted is used as the brightness compensation value of the sub-pixel group to be adjusted at the binding point grayscale, so as to obtain the relationship between the binding point grayscale and the brightness compensation value of each sub-pixel group to be adjusted at the different binding point grayscales;

[0044] At each of the binding point grayscales of the different binding point grayscales, when the chromaticity corresponding to each of the multiple sub-pixel groups to be adjusted deviates from the reference chromaticity corresponding to the reference sub-pixel group less than a second preset value, the chromaticity adjustment amount corresponding to the sub-pixel group to be adjusted is used as the chromaticity compensation value of the sub-pixel group to be adjusted at the binding point grayscale, so as to obtain the relationship between the binding point grayscale and the chromaticity compensation value corresponding to each of the sub-pixel groups to be adjusted at the different binding point grayscales; wherein the display compensation value includes the brightness compensation value and the chromaticity compensation value.

[0045] Optionally, the chromaticity corresponding to each of the sub-pixel groups to be adjusted deviates from a reference chromaticity corresponding to the reference sub-pixel group by less than 3%, and the brightness corresponding to each of the sub-pixel groups to be adjusted deviates from a reference brightness corresponding to the reference sub-pixel group by less than 5%.

[0046] Optionally, the brightness and chromaticity adjustment corresponding to the sub-pixel group to be adjusted can be achieved by adjusting the data voltage. Accordingly, the step of adjusting the brightness and chromaticity corresponding to each sub-pixel group to be adjusted corresponding to different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted includes:

[0047] According to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, the received data voltages of the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted corresponding to the different binding point grayscales are adjusted to adjust the brightness and chromaticity corresponding to each of the sub-pixel groups to be adjusted.

[0048] Optionally, the display compensation table may further include a relationship between the grayscales corresponding to different non-binding point grayscales and the display compensation values. Figure 2D , after the step of adjusting the display parameters corresponding to each of the sub-pixel groups to be adjusted at different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted at different binding point grayscales, the step includes:

[0049] According to the difference between the reference gamma curve and the multiple gamma curves to be adjusted, linear interpolation is performed on the display compensation value corresponding to the different binding point grayscales of each sub-pixel group to be adjusted to obtain the relationship between the grayscale of each sub-pixel group to be adjusted and the display compensation value under different non-binding point grayscales.

[0050] Among them, the relationship between the binding point grayscale and the display compensation value under different binding point grayscales corresponding to each sub-pixel group to be adjusted, and the relationship between the grayscale and the display compensation value under different non-binding point grayscales corresponding to each sub-pixel group to be adjusted are stored in the storage module in the form of a display compensation table.

[0051] Accordingly, the step of respectively compensating the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is less than a preset value includes:

[0052] According to the relationship between the binding point grayscale and the display compensation value under different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, and the relationship between the grayscale and the display compensation value under different non-binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted are compensated respectively, so that the difference between the display parameters corresponding to the multiple sub-pixels included in the multiple sub-pixel groups to be adjusted and the benchmark display parameters is less than the preset value.

[0053] Optionally, after the compensation is performed on the plurality of sub-pixels, in order to reduce the boundary difference between the reference sub-pixel group and the sub-pixel group to be adjusted and to further adjust the display effect, the existing method for improving display unevenness may be used to compensate the plurality of sub-pixels. That is, after the step of respectively compensating the display parameters corresponding to the plurality of sub-pixels included in each sub-pixel group to be adjusted so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each sub-pixel group to be adjusted and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is less than a preset value, the method includes:

[0054] Acquiring the position of the sub-pixel to be compensated in the display panel;

[0055] Compensating the data voltage received by the sub-pixel to be compensated according to the compensation data table;

[0056] The compensation data table is determined by obtaining a plurality of brightness data of a plurality of sub-pixels corresponding to a plurality of binding point grayscales at different viewing angles of the display panel, and according to the difference between the brightness data of each binding point grayscale corresponding to the plurality of sub-pixels at different viewing angles and the expected brightness data. The sub-pixel to be compensated is the position of the sub-pixel where uneven display occurs. The position information of the sub-pixel to be compensated and the compensation data table can be pre-stored in the storage module.

[0057] Figure 3 is a flow chart of a method for generating a display compensation table provided by an embodiment of the present invention; the present invention also provides a method for generating a display compensation table of a display panel, comprising:

[0058] According to display differences of the multiple sub-pixels in the display panel corresponding to the monochrome display pictures, the multiple sub-pixels are grouped to obtain a reference sub-pixel group and a plurality of sub-pixel groups to be adjusted;

[0059] Measuring and obtaining a reference gamma curve corresponding to the reference sub-pixel group and a gamma curve to be adjusted corresponding to the plurality of sub-pixel groups to be adjusted;

[0060] According to the difference between the reference gamma curve and the multiple gamma curves to be adjusted, the display parameters corresponding to each of the sub-pixel groups to be adjusted under different binding point grayscales are adjusted to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted under different binding point grayscales, and generate a display compensation table for each of the sub-pixel groups to be adjusted under different binding point grayscales.

[0061] Optionally, the step of grouping the plurality of sub-pixels in the display panel according to display differences of the plurality of sub-pixels corresponding to the monochrome display images to obtain a reference sub-pixel group and a plurality of sub-pixel groups to be adjusted includes:

[0062] According to the display difference of the multiple sub-pixels in the display panel corresponding to the monochrome display picture, the multiple sub-pixels are grouped to obtain multiple sub-pixel groups;

[0063] The reference sub-pixel group and the sub-pixel groups to be adjusted are determined from the sub-pixel groups according to the distribution areas of the sub-pixels included in each sub-pixel group.

[0064] Optionally, the step of determining the reference sub-pixel group and the plurality of sub-pixel groups to be adjusted from the plurality of sub-pixel groups according to the distribution areas of the plurality of sub-pixels included in each of the sub-pixel groups comprises:

[0065] According to the distribution areas of the plurality of sub-pixels included in each of the sub-pixel groups, determining the sizes of the distribution areas corresponding to the plurality of sub-pixel groups;

[0066] The one with the largest distribution area is selected from the plurality of sub-pixel groups as the reference sub-pixel group, and the remaining plurality of sub-pixel groups are correspondingly selected as the plurality of sub-pixel groups to be adjusted.

[0067] Optionally, the step of adjusting the display parameters corresponding to each of the sub-pixel groups to be adjusted at different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, so as to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted at different binding point grayscales, and generating a display compensation table for each of the sub-pixel groups to be adjusted at different binding point grayscales, comprises:

[0068] According to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, adjusting the brightness and chromaticity corresponding to each of the sub-pixel groups to be adjusted corresponding to the different binding point grayscales;

[0069] At each of the binding point grayscales of the different binding point grayscales, when the difference between the brightness corresponding to each of the plurality of sub-pixel groups to be adjusted and the reference brightness corresponding to the reference sub-pixel group is less than a first preset value, the brightness adjustment amount corresponding to the sub-pixel group to be adjusted is used as the brightness compensation value of the sub-pixel group to be adjusted at the binding point grayscale, so as to obtain the relationship between the binding point grayscale and the brightness compensation value of each sub-pixel group to be adjusted at the different binding point grayscales;

[0070] At each of the binding point grayscales of the different binding point grayscales, when the difference between the chromaticity corresponding to each of the plurality of sub-pixel groups to be adjusted and the reference chromaticity corresponding to the reference sub-pixel group is less than a second preset value, the chromaticity adjustment amount corresponding to the sub-pixel group to be adjusted is used as the chromaticity compensation value at the binding point grayscale corresponding to the sub-pixel group to be adjusted, so as to obtain the relationship between the binding point grayscale and the chromaticity compensation value at the different binding point grayscales corresponding to each sub-pixel group to be adjusted; wherein the display compensation value includes the brightness compensation value and the chromaticity compensation value;

[0071] According to the relationship between the binding point grayscale and the brightness compensation value under the different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, and the relationship between the binding point grayscale and the chromaticity compensation value under the different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, the display compensation table under the different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted is generated.

[0072] Optionally, the step of adjusting the brightness and chromaticity corresponding to each of the sub-pixel groups to be adjusted at different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted includes:

[0073] According to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, the received data voltages of the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted corresponding to the different binding point grayscales are adjusted to adjust the brightness and chromaticity corresponding to each of the sub-pixel groups to be adjusted.

[0074] Optionally, the step of generating a display compensation table for each sub-pixel group to be adjusted corresponding to different binding point grayscales according to the relationship between the binding point grayscale and the brightness compensation value under different binding point grayscales corresponding to each sub-pixel group to be adjusted, and the relationship between the binding point grayscale and the chromaticity compensation value under different binding point grayscales corresponding to each sub-pixel group to be adjusted, comprises:

[0075] According to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, linear interpolation is performed on the brightness compensation values ​​corresponding to different grayscales of the binding points of each sub-pixel group to be adjusted, so as to obtain the relationship between the grayscales and the brightness compensation values ​​corresponding to different non-binding point grayscales of each sub-pixel group to be adjusted, and generate a brightness compensation table corresponding to different grayscales of the binding points of each sub-pixel group to be adjusted;

[0076] According to the difference between the reference gamma curve and the multiple gamma curves to be adjusted, linear interpolation is performed on the chromaticity compensation values ​​corresponding to the different binding point grayscales of each sub-pixel group to be adjusted, so as to obtain the relationship between the grayscale and the chromaticity compensation values ​​corresponding to the different non-binding point grayscales of each sub-pixel group to be adjusted, and generate a chromaticity compensation table for each sub-pixel group to be adjusted corresponding to the different binding point grayscales.

[0077] The display compensation method of the display panel provided in the present application adopts a display compensation table generated by any of the above-mentioned display compensation table generation methods, and the display compensation method comprises: obtaining grouping information corresponding to the plurality of sub-pixels to determine the distribution positions of the plurality of sub-pixels included in the reference sub-pixel group and the distribution positions of the plurality of sub-pixels included in the plurality of sub-pixel groups to be adjusted. Applying the display compensation table to compensate the display parameters corresponding to the plurality of sub-pixels included in each sub-pixel group to be adjusted respectively, so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each sub-pixel group to be adjusted and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is less than a preset value; wherein the display parameters include brightness and chromaticity.

[0078] Optionally, after the step of respectively compensating the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted so that the difference between the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the multiple sub-pixels included in the reference sub-pixel group is less than a first preset value, it also includes using an existing method for improving display unevenness to compensate for the multiple sub-pixels.

[0079] Figure 4 40 is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. The present application also provides a display device including a display panel 401, a storage module 402 and a compensation module 403.

[0080] The display panel 401 includes a plurality of sub-pixels Pi, the storage module 402 is electrically connected to the display panel 401 , and the compensation module 403 is electrically connected to the display panel 401 and the storage module 402 .

[0081] Among them, the compensation module 403 is configured to obtain the grouping information corresponding to the multiple sub-pixels Pi to determine the distribution positions of the multiple sub-pixels Pi included in the reference sub-pixel group (such as area D) and the distribution positions of the multiple sub-pixels Pi included in the multiple sub-pixel groups to be adjusted (such as area A, area B and area C), and according to the data stored in the storage module 402, compensate the display parameters corresponding to the multiple sub-pixels Pi included in each sub-pixel group to be adjusted respectively; the storage module 402 is configured to store the relationship between the binding point grayscale and the display compensation value under different binding point grayscales corresponding to each sub-pixel group to be adjusted, and the relationship between the grayscale and the display compensation value under different non-binding point grayscales corresponding to each sub-pixel group to be adjusted.

[0082] Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only configured to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A display compensation method for a display panel, characterized in that: include: Acquire grouping information corresponding to a plurality of sub-pixels in the display panel to determine distribution positions of a plurality of sub-pixels included in a reference sub-pixel group and distribution positions of a plurality of sub-pixels included in a plurality of sub-pixel groups to be adjusted; Display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted are compensated respectively so that the difference between the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the multiple sub-pixels included in the reference sub-pixel group is less than a preset value.

2. The display compensation method according to claim 1, characterized in that: Before the step of obtaining the grouping information corresponding to the plurality of sub-pixels in the display panel to determine the distribution positions of the plurality of sub-pixels included in the reference sub-pixel group and the distribution positions of the plurality of sub-pixels included in the plurality of sub-pixel groups to be adjusted, the step includes: According to display differences of the multiple sub-pixels in the display panel corresponding to the monochrome display pictures, the multiple sub-pixels are grouped to obtain multiple sub-pixel groups; The reference sub-pixel group and the sub-pixel groups to be adjusted are determined from the sub-pixel groups according to the distribution areas of the sub-pixels included in each sub-pixel group.

3. The display compensation method according to claim 2, characterized in that: The step of determining the reference sub-pixel group and the plurality of sub-pixel groups to be adjusted from the plurality of sub-pixel groups according to the distribution areas of the plurality of sub-pixels included in each of the sub-pixel groups comprises: According to the distribution areas of the plurality of sub-pixels included in each of the sub-pixel groups, determining the sizes of the distribution areas corresponding to the plurality of sub-pixel groups; The one with the largest distribution area is selected from the plurality of sub-pixel groups as the reference sub-pixel group, and the remaining plurality of sub-pixel groups are correspondingly selected as the plurality of sub-pixel groups to be adjusted.

4. The display compensation method according to claim 1, characterized in that: Before the step of respectively compensating the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is less than a preset value, the step includes: Measuring and obtaining a reference gamma curve corresponding to the reference sub-pixel group and a gamma curve to be adjusted corresponding to the plurality of sub-pixel groups to be adjusted; According to the difference between the reference gamma curve and the multiple gamma curves to be adjusted, the display parameters corresponding to each of the sub-pixel groups to be adjusted under different binding point grayscales are adjusted to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted under different binding point grayscales.

5. The display compensation method according to claim 4, characterized in that: The step of adjusting the display parameters corresponding to each of the sub-pixel groups to be adjusted at different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, so as to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted at different binding point grayscales, comprises: According to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, adjusting the brightness and chromaticity corresponding to each of the sub-pixel groups to be adjusted corresponding to the different binding point grayscales; At each of the binding point grayscales of the different binding point grayscales, when the deviation between the brightness corresponding to each of the plurality of sub-pixel groups to be adjusted and the reference brightness corresponding to the reference sub-pixel group is less than a first preset value, the brightness adjustment amount corresponding to the sub-pixel group to be adjusted is used as the brightness compensation value of the sub-pixel group to be adjusted at the binding point grayscale, so as to obtain the relationship between the binding point grayscale and the brightness compensation value of each sub-pixel group to be adjusted at the different binding point grayscales; At each of the binding point grayscales of the different binding point grayscales, when the chromaticity corresponding to each of the multiple sub-pixel groups to be adjusted deviates from the reference chromaticity corresponding to the reference sub-pixel group less than a second preset value, the chromaticity adjustment amount corresponding to the sub-pixel group to be adjusted is used as the chromaticity compensation value of the sub-pixel group to be adjusted at the binding point grayscale, so as to obtain the relationship between the binding point grayscale and the chromaticity compensation value corresponding to each of the sub-pixel groups to be adjusted at the different binding point grayscales; wherein the display compensation value includes the brightness compensation value and the chromaticity compensation value.

6. The display compensation method according to claim 5, characterized in that: The step of adjusting the brightness and chromaticity of each of the sub-pixel groups to be adjusted corresponding to different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted comprises: According to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted, the received data voltages of the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted corresponding to the different binding point grayscales are adjusted to adjust the brightness and chromaticity corresponding to each of the sub-pixel groups to be adjusted.

7. The display compensation method according to claim 4, characterized in that: After the step of adjusting the display parameters corresponding to each of the sub-pixel groups to be adjusted at different binding point grayscales according to the difference between the reference gamma curve and the plurality of gamma curves to be adjusted to obtain the relationship between the binding point grayscale and the display compensation value of each of the sub-pixel groups to be adjusted at different binding point grayscales, the method further comprises: According to the difference between the reference gamma curve and the multiple gamma curves to be adjusted, linear interpolation is performed on the display compensation value corresponding to the different binding point grayscales of each sub-pixel group to be adjusted to obtain the relationship between the grayscale of each sub-pixel group to be adjusted and the display compensation value under different non-binding point grayscales.

8. The display compensation method according to claim 7, characterized in that: The step of respectively compensating the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is less than a preset value comprises: According to the relationship between the binding point grayscale and the display compensation value under different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, and the relationship between the grayscale and the display compensation value under different non-binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted are compensated respectively, so that the difference between the display parameters corresponding to the multiple sub-pixels included in the multiple sub-pixel groups to be adjusted and the benchmark display parameters is less than the preset value.

9. The display compensation method according to claim 1, characterized in that: After the step of respectively compensating the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted so that the difference between the display parameters corresponding to the plurality of sub-pixels included in each of the sub-pixel groups to be adjusted and the reference display parameters of the plurality of sub-pixels included in the reference sub-pixel group is less than a preset value, the step includes: Acquiring the position of the sub-pixel to be compensated in the display panel; Compensating the data voltage received by the sub-pixel to be compensated according to the compensation data table; Among them, the compensation data table is determined by obtaining multiple brightness data of multiple binding point grayscales corresponding to multiple sub-pixels of the display panel at different viewing angles, and based on the difference between the brightness data of each binding point grayscale corresponding to the multiple sub-pixels at different viewing angles and the expected brightness data.

10. A display device, characterized in that: include: A display panel including a plurality of sub-pixels; A storage module electrically connected to the display panel; as well as A compensation module, electrically connected to the display panel and the storage module; Among them, the compensation module is configured to obtain grouping information corresponding to the multiple sub-pixels to determine the distribution positions of the multiple sub-pixels included in the reference sub-pixel group and the distribution positions of the multiple sub-pixels included in the multiple sub-pixel groups to be adjusted, and according to the data stored in the storage module, compensate the display parameters corresponding to the multiple sub-pixels included in each of the sub-pixel groups to be adjusted respectively; the storage module is configured to store the relationship between the binding point grayscale and the display compensation value under different binding point grayscales corresponding to each of the sub-pixel groups to be adjusted, and the relationship between the grayscale and the display compensation value under different non-binding point grayscales corresponding to each of the sub-pixel groups to be adjusted.

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