Brightness compensation method and brightness compensation device of display panel and display device

Abstract

The embodiment of the invention discloses a brightness compensation method and device for a display panel and a display device, and the method comprises the steps: determining a to-be-compensated pixel corresponding to a defective pixel according to the type of the defective pixel of the display panel, and enabling the to-be-compensated pixel to be corresponding to the defective pixel according to the type of the defective pixel during the subsequent compensation of the display panel, and performing brightness compensation on the to-be-compensated pixel corresponding to the defective pixel so as to realize brightness compensation on the defective pixel. The types or compensation modes of the to-be-compensated pixels corresponding to the at least two different types of defective pixels can be different, so that targeted brightness compensation is performed on the defective pixels in the display panel, the display effect of the display panel is improved, and the user experience is improved.

Description

Technical Field

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

[0002] With the development of display technology, users have higher and higher requirements on the picture display quality of display panels.

[0003] In the prior art, there is still the problem of poor picture display effect of the display panel. Summary of the invention

[0004] The present invention provides a brightness compensation method, a brightness compensation device and a display device for a display panel, so as to improve the display effect of the display panel and enhance the user experience.

[0005] According to one aspect of the present invention, a brightness compensation method for a display panel is provided, wherein the display panel includes primary color pixels of at least one luminous color, at least one primary color pixel is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; the brightness compensation method includes:

[0006] According to the type of defective pixels of the display panel, pixels to be compensated corresponding to the defective pixels are determined.

[0007] According to another aspect of the present invention, a brightness compensation method for a display panel is provided. The display panel includes at least one primary color pixel of a light-emitting color, at least one primary color pixel is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; the brightness compensation method includes:

[0008] According to a first target brightness of a defective pixel of the display panel, a pixel to be compensated corresponding to the defective pixel is determined.

[0009] The primary color pixel includes a primary color sub-pixel; the primary color sub-pixel includes a pixel circuit and a light-emitting device, and the pixel circuit is used to drive the light-emitting device;

[0010] Alternatively, the primary color pixel includes at least two primary color sub-pixels; each primary color sub-pixel includes a pixel circuit and a light-emitting device, and the pixel circuit is used to drive the light-emitting device; at least two primary color sub-pixels share the same pixel circuit;

[0011] Optionally, before determining the pixel to be compensated corresponding to the defective pixel according to the type of the defective pixel of the display panel, the brightness compensation method further includes:

[0012] Acquire primary color image data of the display panel, the primary color image data including brightness data of primary color sub-pixels in a plurality of primary color pixels at a binding point gray scale;

[0013] Determining the position and type of defective pixels of the display panel according to the primary color image data;

[0014] Optionally, determining the position and type of defective pixels of the display panel according to the primary color image data of the display panel includes:

[0015] In the case where the primary color pixel is determined to be a defective pixel according to the brightness data of at least one primary color sub-pixel of the primary color pixel at the tie point grayscale, the type of the defective pixel is determined according to the brightness data corresponding to each primary color sub-pixel in the defective pixel, and the position of the defective pixel is determined according to the position information corresponding to the defective pixel in the primary color image data;

[0016] Optionally, when the brightness data of at least one primary color sub-pixel of the primary color pixel at the binding point grayscale is greater than the corresponding first brightness threshold, and / or the brightness data of at least one primary color sub-pixel of the primary color pixel at the binding point grayscale is less than the corresponding second brightness threshold, the primary color pixel is determined to be a defective pixel; wherein the first brightness thresholds corresponding to different binding point grayscales are different, and the second brightness thresholds corresponding to different binding point grayscales are different;

[0017] Optionally, the first brightness threshold is greater than or equal to an average value, a median value or a mode value of brightness data of primary color sub-pixels in a plurality of primary color pixels at a binding point gray scale;

[0018] Optionally, the second brightness threshold is less than or equal to an average value, a median value or a mode value of brightness data of primary color sub-pixels in a plurality of primary color pixels at a binding point gray scale;

[0019] Optionally, the second brightness threshold is less than the first brightness threshold;

[0020] Optionally, when the brightness data of the primary color sub-pixel at the binding point grayscale is greater than the corresponding first brightness threshold, the primary color sub-pixel is a bright point sub-pixel; when the brightness data of the primary color sub-pixel at the binding point grayscale is less than the corresponding second brightness threshold and greater than the corresponding third brightness threshold, the primary color sub-pixel is a gray point sub-pixel; when the brightness data of the primary color sub-pixel at the binding point grayscale is less than or equal to the corresponding third brightness threshold, the primary color sub-pixel is a black point sub-pixel; the third brightness threshold is less than the second brightness threshold;

[0021] Optionally, the primary color image data is a monochrome picture;

[0022] Optionally, the color of the primary color image data is one of red, green or blue;

[0023] Optionally, the color of the primary color image data is the same as the luminous color corresponding to the defective pixel;

[0024] Optionally, after acquiring the primary color image data of the display panel, the method further includes:

[0025] Determine the positions of the normal pixels of the display panel based on the primary color image data;

[0026] Optionally, the brightness data of the primary color sub-pixels of the normal pixels at the binding point gray level is greater than or equal to the corresponding second brightness threshold and less than or equal to the corresponding first brightness threshold.

[0027] Optionally, the pixels to be compensated include defective pixels, and / or at least one primary color pixel around the defective pixel;

[0028] The defective pixel includes i primary color sub-pixels, including j black dot sub-pixels, where i is an integer greater than or equal to 1, and j is an integer greater than or equal to 0 and less than or equal to i;

[0029] Determine the pixels to be compensated corresponding to the defective pixels according to the type of the defective pixels of the display panel, including:

[0030] When the type of the defective pixel is j < i, determine at least the defective pixel and / or at least one primary color pixel around the defective pixel as the pixels to be compensated according to the first target brightness of the defective pixel;

[0031] When the type of the defective pixel is j = i, determine at least one primary color pixel around the defective pixel as the pixels to be compensated;

[0032] Optionally, when the type of the defective pixel is j < i, determine the pixels to be compensated according to the magnitude relationship between the first target brightness of the defective pixel and the preset brightness limit value;

[0033] Optionally, when the type of the defective pixel is j < i and the first target brightness of the defective pixel is less than or equal to the preset brightness limit value, determine the defective pixel as the pixel to be compensated;

[0034] Optionally, when the type of the defective pixel is j < i and the first target brightness of the defective pixel is greater than the preset brightness limit value, determine the defective pixel and at least one primary color pixel around the defective pixel as the pixels to be compensated;

[0035] Optionally, when the type of the defective pixel is j < i, the defective pixel includes a non-black dot sub-pixel, and the preset brightness limit value is greater than the brightness value corresponding to the maximum gray level of the non-black dot sub-pixel of the defective pixel within the preset gray level range;

[0036] Or, the defective pixel includes at least two non-black dot sub-pixels, and the preset brightness limit value is greater than the sum of the brightness values corresponding to the maximum gray levels of the non-black dot sub-pixels of the defective pixel within the preset gray level range;

[0037] Optionally, the first target brightness is a target brightness of the defective pixel at a corresponding binding point grayscale, the number of the binding point grayscales is at least two, and the binding point grayscales are within a preset grayscale range;

[0038] Optionally, the binding point grayscale includes a maximum grayscale within a preset grayscale range;

[0039] Optionally, at least two types of defective pixels have different numbers of black dot sub-pixels, and / or at least two types of defective pixels have different numbers of non-black dot sub-pixels.

[0040] Optionally, the number of black dot sub-pixels in the defective pixel is equal to 0 or 1 or 2;

[0041] Optionally, the defective pixel includes at least one defective sub-pixel, and the defective sub-pixel includes a black dot sub-pixel, a gray dot sub-pixel, or a bright dot sub-pixel; under the same data voltage, the brightness of the black dot sub-pixel, the gray dot sub-pixel, and the bright dot sub-pixel increases in sequence;

[0042] Optionally, when the brightness data of the primary color sub-pixel is less than or equal to a third brightness threshold, the primary color sub-pixel is determined to be a black dot sub-pixel;

[0043] Optionally, the third brightness threshold is equal to 0;

[0044] Optionally, the non-black dot sub-pixel in the defective pixel includes a normal sub-pixel, a gray dot sub-pixel or a bright dot sub-pixel; under the same data voltage, the brightness of the gray dot sub-pixel, the normal sub-pixel and the bright dot sub-pixel increases in sequence;

[0045] Optionally, the number of gray sub-pixels in at least two types of defective pixels is different, and / or the number of bright sub-pixels in at least two types of defective pixels is different, and / or the number of normal sub-pixels in at least two types of defective pixels is different, and / or the number of black sub-pixels in at least two types of defective pixels is different;

[0046] Optionally, at least one primary color pixel around the defective pixel determined as a pixel to be compensated includes one or more of a normal sub-pixel, a black dot sub-pixel, a gray dot sub-pixel and a bright dot sub-pixel;

[0047] Optionally, after determining the pixel to be compensated corresponding to the defective pixel according to the type of the defective pixel of the display panel, the brightness compensation method further includes:

[0048] The compensation gray scale of the pixel to be compensated is determined according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel.

[0049] Optionally, the pixel to be compensated includes a defective pixel; the defective pixel includes m1 non-black dot sub-pixels, where m1 is an integer greater than or equal to 1;

[0050] Determining a compensation grayscale of a pixel to be compensated according to a first target brightness of a defective pixel of the display panel and a gamma curve corresponding to at least one primary color sub-pixel in a pixel to be compensated corresponding to the defective pixel, comprising:

[0051] Determine the compensation grayscale of the non-black dot sub-pixel in the defective pixel according to the first target brightness of the defective pixel and the gamma curve corresponding to m1 non-black dot sub-pixels in the defective pixel;

[0052] Optionally, in a case where the first target brightness of the defective pixel at the binding point grayscale is less than or equal to the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is determined according to the first target brightness of the defective pixel and according to the first gamma curve of m1 non-black dot sub-pixels; wherein the first gamma curve is fitted according to the brightness data of the non-black dot sub-pixel at at least two binding point grayscales within the preset grayscale range; and the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is less than or equal to the maximum grayscale within the preset grayscale range;

[0053] Optionally, when the first target brightness of the defective pixel under the binding point grayscale is greater than the actual brightness corresponding to the defective pixel under the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit, the compensation grayscale corresponding to the non-black dot sub-pixel under the binding point grayscale is determined according to the first target brightness of the defective pixel and the second gamma curve of m1 non-black dot sub-pixels; wherein the second gamma curve is obtained by fitting the brightness data of the primary color sub-pixel under at least two binding point grayscales within the preset grayscale range and the preset brightness limit corresponding to the preset grayscale limit; the compensation grayscale corresponding to the non-black dot sub-pixel under the binding point grayscale is greater than the maximum grayscale within the preset grayscale range, and is less than or equal to the preset grayscale limit;

[0054] Optionally, the second gamma curve includes part or all of the first gamma curve;

[0055] Optionally, the defective pixel includes one non-black dot sub-pixel, and the actual brightness of the defective pixel is equal to the brightness of the non-black dot sub-pixel in the defective pixel; or, the defective pixel includes at least two non-black dot sub-pixels, and the actual brightness of the defective pixel is equal to the sum of the brightness of the non-black dot sub-pixels in the defective pixel;

[0056] Optionally, the preset grayscale limit is greater than the maximum grayscale within the preset grayscale range;

[0057] Optionally, the defective pixels in the pixels to be compensated include m1 non-black dot sub-pixels;

[0058] Optionally, m1 is 1 or 2 or an integer greater than 2;

[0059] When the first target brightness of the defective pixel at the binding point grayscale is less than or equal to the actual brightness of the defective pixel at the maximum grayscale within the preset grayscale range, the first target brightness of the defective pixel is equal to the sum of the brightness of the first gamma curve of m1 non-black dot sub-pixels in the defective pixel at the compensation grayscale;

[0060] When the first target brightness of the defective pixel at the binding point grayscale is greater than the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit, the first target brightness of the defective pixel is equal to the sum of the brightness of the second gamma curve of the m1 non-black dot sub-pixels in the defective pixel at the compensated grayscale.

[0061] Optionally, the pixel to be compensated includes a defective pixel; the defective pixel includes m1 non-black dot sub-pixels, where m1 is an integer greater than or equal to 1;

[0062] Determining a compensation grayscale of a pixel to be compensated according to a first target brightness of a defective pixel of the display panel and a gamma curve corresponding to at least one primary color sub-pixel in a pixel to be compensated corresponding to the defective pixel, comprising:

[0063] In the case where the first target brightness of the defective pixel at the binding point grayscale is greater than the preset brightness limit, the preset grayscale limit corresponding to the preset brightness limit is determined as the compensation grayscale corresponding to the non-black dot sub-pixel according to the first target brightness of the defective pixel and the second gamma curve of m1 non-black dot sub-pixels; wherein the second gamma curve is obtained by fitting the preset brightness limit corresponding to the preset grayscale limit according to the brightness data of the primary color sub-pixel at at least two binding point grayscales within the preset grayscale range;

[0064] Optionally, the pixels to be compensated further include at least one primary color pixel around the defective pixel;

[0065] After determining the preset grayscale limit value corresponding to the preset brightness limit value as the compensation grayscale corresponding to the non-black dot sub-pixel, the method further includes:

[0066] According to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one primary color pixel around the defective pixel, determine that at least one primary color pixel around the defective pixel corresponds to the compensation grayscale corresponding to the defective pixel under the binding point grayscale.

[0067] Optionally, determining, according to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one primary color pixel around the defective pixel, the compensation grayscale corresponding to the defective pixel under the binding point grayscale of at least one primary color pixel around the defective pixel, includes:

[0068] Determine the brightness reduction ratio of k1 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel according to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit value to the first target brightness; wherein k1 is an integer greater than or equal to 1;

[0069] Determine the compensation grayscale of k1 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel according to the gamma curve and the brightness reduction ratio of k1 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel;

[0070] Optionally, the k1 primary color pixels around the defective pixel include primary color pixels that form a pixel group with the defective pixel, wherein the pixel group includes at least two primary color pixels of different luminous colors; the pixel group is the minimum repeating unit of pixel arrangement in the display panel;

[0071] Optional, k1 is 2.

[0072] Optionally, determining, according to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one primary color pixel around the defective pixel, the compensation grayscale corresponding to the defective pixel under the binding point grayscale of at least one primary color pixel around the defective pixel, includes:

[0073] Determine the brightness values ​​of n1 primary color pixels around the defective pixel and having the same luminous color as the defective pixel according to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit; wherein n1 is an integer greater than or equal to 1;

[0074] Determine the compensation grayscale of n1 primary color pixels around the defective pixel with the same luminous color as the defective pixel according to the gamma curves and corresponding brightness values ​​of n1 primary color pixels around the defective pixel with the same luminous color as the defective pixel;

[0075] Optionally, the brightness values ​​of n1 primary color pixels around the defective pixel and having the same luminous color as the defective pixel are equal to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit to n1.

[0076] Optional, n1 is 2, 3 or 4;

[0077] Optionally, at least one primary color pixel having the same luminous color as that corresponding to the defective pixel around the defective pixel is located on one side, two sides, three sides or four sides of the defective pixel;

[0078] The two sides include two adjacent sides or two opposite sides, or the four sides include two opposite sides along a first direction and two opposite sides along a second direction, and the first direction and the second direction intersect.

[0079] Optionally, when the type of defective pixel is j=i,

[0080] Determining a compensation grayscale of a pixel to be compensated according to a first target brightness of a defective pixel of the display panel and a gamma curve corresponding to at least one primary color sub-pixel in a pixel to be compensated corresponding to the defective pixel, comprising:

[0081] Determine, according to a first target brightness of the defective pixel and a gamma curve of at least one primary color pixel around the defective pixel, a compensation grayscale corresponding to the defective pixel under the binding point grayscale of at least one primary color pixel around the defective pixel;

[0082] Optionally, determining the compensation grayscale corresponding to at least one primary color pixel around the defective pixel under the binding point grayscale according to the first target brightness of the defective pixel and the gamma curve of at least one primary color pixel around the defective pixel includes:

[0083] According to the first target brightness corresponding to the defective pixel, determining the brightness reduction ratio of k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel; according to the brightness reduction ratio of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel and the gamma curve, determining the compensation grayscale of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel; wherein k2 is an integer greater than or equal to 1;

[0084] and / or, determining the raised brightness values ​​of n2 primary color pixels with the same luminous color as the defective pixel around the defective pixel according to the first target brightness corresponding to the defective pixel; determining the compensated grayscales of n2 primary color pixels with the same luminous color as the defective pixel around the defective pixel according to the gamma curves and corresponding raised brightness values ​​of the n2 primary color pixels with the same luminous color as the defective pixel around the defective pixel; wherein n2 is an integer greater than or equal to 1;

[0085] Optionally, the k2 primary color pixels around the defective pixel include primary color pixels that form a pixel group with the defective pixel, wherein the pixel group includes at least two primary color pixels of different luminous colors; the pixel group is the minimum repeating unit of pixel arrangement in the display panel;

[0086] Optional, k2 is 2;

[0087] Optionally, the brightness values ​​of n2 primary color pixels around the defective pixel and having the same luminous color as the defective pixel are equal to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit value to n2.

[0088] Optionally, n2 is 2, 3 or 4.

[0089] Optionally, the plurality of primary color pixels include at least one normal pixel and at least one defective pixel.

[0090] Determine the compensation grayscale of the normal pixel according to the second target brightness corresponding to the normal pixel and the gamma curve corresponding to m2 primary color sub-pixels in the normal pixel; wherein m2 is an integer greater than or equal to 1;

[0091] Optionally, the primary color pixel includes a primary color sub-pixel, and the gamma curve corresponding to the primary color sub-pixel in the normal pixel is obtained by fitting according to the actual brightness of each primary color sub-pixel at at least two binding point grayscales within a preset grayscale range;

[0092] Alternatively, the primary color pixel includes at least two primary color sub-pixels, and m2 is an integer of 2 or greater than 2;

[0093] Optionally, the gamma curves corresponding to the primary color sub-pixels at the same position in at least two normal pixels with the same luminous color are the same; the gamma curves corresponding to the primary color sub-pixels at the same position in at least two normal pixels with the same luminous color are obtained by fitting according to the actual brightness of the primary color sub-pixels at the same corresponding position in at least two normal pixels with the same luminous color at at least two binding point grayscales within a preset grayscale range;

[0094] Optionally, the gamma curves corresponding to at least two primary color sub-pixels in the same normal pixel are the same;

[0095] Optionally, the second target brightness corresponding to the normal pixel is equal to the sum of the brightnesses corresponding to the gamma curves corresponding to m2 primary color sub-pixels in the normal pixel at the compensated grayscale of the normal pixel;

[0096] Optionally, at the same binding point grayscale, the second target brightness corresponding to the normal pixel and the first target brightness corresponding to the defective pixel are the same.

[0097] Optionally, after determining the compensation grayscale corresponding to the pixel to be compensated corresponding to the defective pixel, the method further includes:

[0098] Determine the compensation offset corresponding to the defective pixel at the binding point grayscale of the pixel to be compensated according to the difference between the compensation grayscale corresponding to the pixel to be compensated and the binding point grayscale;

[0099] After determining the compensation grayscale corresponding to the normal pixel, it also includes:

[0100] Determine the compensation offset corresponding to the normal pixel at the binding point grayscale according to the difference between the compensation grayscale corresponding to the normal pixel and the binding point grayscale;

[0101] Controlling to store the compensation offset corresponding to the pixel to be compensated, and obtaining a first compensation table; controlling to compress and store the compensation offset corresponding to the normal pixel, and obtaining a second compensation table; or controlling to integrate the compensation offset corresponding to the normal pixel and the compensation offset corresponding to the pixel to be compensated, and storing the obtained compensation table; or controlling to compress the compensation offset corresponding to the normal pixel, and controlling to integrate the compensation offset corresponding to the normal pixel and the compressed compensation offset corresponding to the pixel to be compensated, and storing the obtained compensation table;

[0102] Optionally, when a non-defective primary color pixel is determined as a pixel to be compensated, the stored compensation offset is controlled to be the compensation offset corresponding to the pixel to be compensated;

[0103] Optionally, the compensation offset corresponding to the normal pixel and the position information of the normal pixel are stored correspondingly;

[0104] Optionally, the compensation offset corresponding to the pixel to be compensated is stored correspondingly to the position information of the pixel to be compensated;

[0105] Optionally, the brightness compensation method further includes:

[0106] According to the position information of the pixel to be compensated, and the compensation grayscale corresponding to the pixel to be compensated or the compensation offset corresponding to the compensation grayscale,

[0107] Perform brightness compensation on the pixels to be compensated in the display panel.

[0108] Optionally, the brightness compensation method further includes:

[0109] Receive input raw image data; the raw image data includes raw display data of each primary color pixel in the display panel; the plurality of primary color pixels include normal pixels and pixels to be compensated;

[0110] The original display data corresponding to the pixel to be compensated is compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, so as to realize brightness compensation for the display panel; the first compensation table at least includes the compensation offset corresponding to the pixel to be compensated; the compensation offset is the difference between the compensation grayscale and the binding point grayscale;

[0111] Optionally, before, after or simultaneously with compensating the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, the method further includes:

[0112] Compensating the original display data corresponding to the normal pixels according to the compensation offsets corresponding to the normal pixels in the second compensation table; the second compensation table includes the compensation offsets corresponding to at least some of the normal pixels;

[0113] Alternatively, the first compensation table includes compensation offsets corresponding to the pixels to be compensated and compensation offsets corresponding to the normal pixels.

[0114] Compensating the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, including:

[0115] The original display data corresponding to the pixels to be compensated and the normal pixels are compensated according to the compensation offsets corresponding to the primary color pixels in the first compensation table.

[0116] Optionally, the primary color sub-pixel includes a light-emitting device, the light-emitting device includes a first electrode, a light-emitting layer, and a second electrode that are stacked, the primary color pixel includes at least two primary color sub-pixels corresponding to the same light-emitting color, and the light-emitting regions of the multiple primary color sub-pixels in the same primary color pixel are arranged at intervals;

[0117] In the primary color pixel, the first electrodes of different primary color sub-pixels are shared, and under the same binding point gray scale, the compensation gray scales corresponding to different primary color sub-pixels in the primary color pixel are the same;

[0118] Optionally, the primary color pixel further includes a pixel circuit, and the first electrodes of at least two primary color sub-pixels in the primary color pixel are connected to the same pixel circuit; different primary color pixels are connected to different pixel circuits;

[0119] Optionally, the display panel further includes an isolation structure, which encloses a plurality of isolation openings, and at least a portion of the primary color sub-pixels are located in the isolation openings.

[0120] According to another aspect of the present invention, a brightness compensation method for a display panel is provided, wherein the display panel includes primary color pixels of at least one luminous color, at least one primary color pixel is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; the brightness compensation method includes: determining a pixel to be compensated corresponding to the defective pixel according to a first target brightness of the defective pixel of the display panel.

[0121] According to another aspect of the present invention, a brightness compensation method for a display panel is provided, wherein the display panel includes primary color pixels of at least one luminous color, at least one primary color pixel is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; the brightness compensation method includes:

[0122] The compensation gray scale of the pixel to be compensated is determined according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel.

[0123] According to another aspect of the present invention, a brightness compensation method for a display panel is provided, wherein the display panel includes a primary color pixel of at least one luminous color, and the primary color pixel includes at least two primary color sub-pixels; the brightness compensation method includes:

[0124] For each primary color pixel in the at least one primary color pixel, a compensated gray scale of the primary color pixel is determined according to a target brightness of the primary color pixel and a gamma curve corresponding to at least two primary color sub-pixels in the primary color pixel.

[0125] According to another aspect of the present invention, a brightness compensation device for a display panel is provided, comprising: an input module and a first compensation module; the input module is used to receive input original image data, the original image data including original display data of each primary color pixel in the display panel; the primary color pixels include normal pixels and pixels to be compensated; the first compensation module is used to compensate the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in a first compensation table; wherein the first compensation table at least includes the compensation offset corresponding to the pixel to be compensated.

[0126] Optionally, the brightness compensation device further includes a storage module, which is used to store position information corresponding to the pixel to be compensated;

[0127] The first compensation module is used to compensate the original display data corresponding to the pixel to be compensated according to the position information corresponding to the pixel to be compensated and the compensation offset corresponding to the pixel to be compensated in the first compensation table;

[0128] Optionally, the first compensation module is connected to the input module;

[0129] Optionally, the brightness compensation device further includes: a second compensation module,

[0130] The second compensation module is connected to the input module, and is used to compensate the original display data corresponding to the normal pixel according to the compensation offset corresponding to the normal pixel in the second compensation table;

[0131] Optionally, the second compensation module is connected between the input module and the first compensation module, and the first compensation module is further used to compensate the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table when the non-defective primary color pixel is the pixel to be compensated;

[0132] Alternatively, the brightness compensation device further includes a judgment module, which is connected to the input module, the first compensation module, and the second compensation module respectively.

[0133] The judging module is used to output the original display data and the corresponding position information to the second compensation module when judging that the primary color pixel is a normal pixel according to the position information of the primary color pixel, and to output the original display data and the corresponding position information to the first compensation module when judging that the primary color pixel is a pixel to be compensated according to the position information of the primary color pixel;

[0134] Optionally, the brightness compensation device further includes a decompression module, which is connected to the second compensation module and is used to decompress the second compensation table to obtain a compensation offset corresponding to a normal pixel.

[0135] Optionally, the brightness compensation device further includes: a second compensation module,

[0136] The second compensation module is connected to the input module, and is used to compensate the original display data corresponding to the normal pixel according to the compensation offset corresponding to the normal pixel in the second compensation table;

[0137] The input module includes a first input module and a second input module, wherein the first input module and the second input module are respectively used to receive input original image data;

[0138] The first compensation module is connected to the first input module, and the second compensation module is connected to the second input module;

[0139] The first input module and the first compensation module are integrated, and the second input module and the second compensation module are integrated.

[0140] Optionally, the first compensation table also includes compensation offsets corresponding to normal pixels;

[0141] The first compensation module is used for compensating the original display data corresponding to the pixels to be compensated and the normal pixels according to the compensation offset corresponding to each primary color pixel in the first compensation table.

[0142] According to another aspect of the present invention, a display device is provided, comprising a display panel using the brightness compensation method of a display panel according to any embodiment of the present invention, or comprising a brightness compensation device according to any embodiment of the present invention.

[0143] Optionally, the primary color pixel further includes a pixel circuit, the primary color sub-pixel includes a light-emitting device, the pixel circuit of the primary color pixel is connected to the light-emitting device, the pixel circuit includes a driving branch, a first end of the driving branch is connected to the first signal line, a second end of the driving branch is electrically connected to a first electrode of the light-emitting device, a second electrode of the light-emitting device is connected to a second voltage input terminal, and the driving branch is used to output a driving current to the light-emitting device;

[0144] Optionally, first electrodes of a plurality of light-emitting devices in a same primary color pixel are connected to each other;

[0145] Optionally, the display panel further includes an isolation structure, the isolation structure encloses a plurality of isolation openings, and the second electrode of each light-emitting device is located in the corresponding isolation opening and overlaps with the corresponding isolation structure;

[0146] Optionally, the second electrodes of the light-emitting devices of the same light-emitting color are electrically connected via an isolation structure;

[0147] Optionally, the second electrodes of the light-emitting devices of different luminous colors are insulated from each other, and the isolation structures connecting the second electrodes of the light-emitting devices of different luminous colors are insulated from each other;

[0148] Optionally, the light-emitting device further includes a light-emitting layer, the light-emitting layer is located between the first electrode and the second electrode, and the light-emitting layers of light-emitting devices with different light-emitting colors are separated by the isolation structure;

[0149] Optionally, the display panel further includes a driving circuit layer and a pixel definition layer, the pixel definition layer is located between the driving circuit layer and the isolation structure, and the pixel definition layer includes a plurality of pixel openings; the orthographic projection of the isolation structure on the pixel definition layer is located between adjacent pixel openings;

[0150] Optionally, the isolation structure includes a first supporting portion and a partitioning portion, the first supporting portion is located between the partitioning portion and the pixel definition layer; the second electrode of the light-emitting device overlaps the first supporting portion, and the first supporting portion is conductive;

[0151] Optionally, in the direction of the pixel openings on both sides of the isolation structure, at the position where the first supporting portion and the partitioning portion meet, the size of the first supporting portion is smaller than the size of the partitioning portion;

[0152] Optionally, the first voltage input terminals of sub-pixels of different luminous colors are connected to the same first signal line;

[0153] Optionally, the isolation structure further includes a second supporting portion, and the second supporting portion is located on a side of the first supporting portion away from the partition portion;

[0154] Optionally, in the direction of the pixel openings on both sides of the isolation structure, at a position where the first supporting portion and the second supporting portion meet, the size of the second supporting portion is greater than the size of the first supporting portion;

[0155] Optionally, in the direction of connecting the pixel openings on both sides of the isolation structure, the size of the second supporting portion is smaller than the size of the partition portion.

[0156] Optionally, the primary color pixels of at least one luminous color include primary color pixels of at least two luminous colors, the numbers of primary color sub-pixels in the primary color pixels of at least two luminous colors are different, and / or the numbers of primary color sub-pixels in the primary color pixels of at least two luminous colors are the same; and / or the numbers of primary color sub-pixels in primary color pixels of the same luminous color are the same;

[0157] and / or, the primary color pixels of at least one luminous color include a first primary color pixel, a second primary color pixel and a third primary color pixel having different luminous colors;

[0158] The first primary color pixel, the second primary color pixel and the third primary color pixel are sequentially arranged in a circular pattern along the first direction; or the first primary color pixel, the second primary color pixel, the third primary color pixel and the second primary color pixel are sequentially arranged in a circular pattern along the first direction;

[0159] and / or, the primary color pixel includes at least two primary color sub-pixels arranged along the second direction;

[0160] Optionally, the first direction and the second direction intersect.

[0161] The brightness compensation method, brightness compensation device and display device of the display panel of the embodiment of the present invention determine the pixels to be compensated corresponding to the defective pixels according to the type of defective pixels of the display panel, so that when the display panel is subsequently compensated, the pixels to be compensated corresponding to the defective pixels can be brightness compensated according to the type of defective pixels, so as to achieve brightness compensation of the defective pixels. The types or compensation methods of the pixels to be compensated corresponding to at least two different types of defective pixels can be different, so that targeted brightness compensation is performed on the defective pixels in the display panel, which is conducive to improving the display effect of the display panel and improving the user experience.

[0162] 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

[0163] 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.

[0164] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0165] Figure 2 is a flow chart of a brightness compensation method for a display panel provided by an embodiment of the present invention;

[0166] Figure 3 is a flow chart of another brightness compensation method for a display panel provided by an embodiment of the present invention;

[0167] Figure 4 is a schematic diagram of multiple primary color pixels;

[0168] Figure 5 is a schematic diagram of a determined pixel to be compensated;

[0169] Figure 6 is a schematic diagram of another determined pixel to be compensated;

[0170] Figure 7 is a schematic diagram of another determined pixel to be compensated;

[0171] Figure 8 is a schematic diagram of another determined pixel to be compensated;

[0172] Fig. 9 is a schematic diagram of another determined pixel to be compensated;

[0173] Fig.10 is a schematic diagram of another determined pixel to be compensated;

[0174] Fig.11 is a structural schematic diagram of a pixel circuit provided by an embodiment of the present invention;

[0175] Fig.12 is a schematic diagram of the structure of another pixel circuit;

[0176] Fig.13 yes Fig.12 A schematic diagram showing the connection relationship between the pixel circuit and the light emitting device;

[0177] Fig.14 yes Fig.11 A schematic diagram showing the connection relationship between the pixel circuit and the light emitting device;

[0178] Fig.15 A schematic diagram of determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness of the defective pixel at the binding point grayscale is less than or equal to the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range;

[0179] Fig.16 Another schematic diagram of determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness of the defective pixel at the binding point grayscale is less than or equal to the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range;

[0180] Fig.17 A schematic diagram of determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness of the defective pixel at the binding point grayscale is greater than the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit;

[0181] Fig.18 Another schematic diagram of determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness of the defective pixel at the binding point grayscale is greater than the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit;

[0182] Fig.19 A schematic diagram of determining a compensation grayscale corresponding to a non-black dot sub-pixel when a first target brightness of a defective pixel under a tie-dot grayscale is greater than a preset brightness limit;

[0183] Fig. 20 Another schematic diagram of determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness of the defective pixel under the tie-dot grayscale is greater than the preset brightness limit;

[0184] Fig.21 is a flow chart of another brightness compensation method for a display panel provided by an embodiment of the present invention;

[0185] Fig. 22 It is a schematic diagram of determining the compensation grayscale of a normal pixel according to the second target brightness corresponding to the normal pixel and the gamma curve corresponding to m2 primary color sub-pixels in the normal pixel;

[0186] Fig.23 is a cross-sectional view of a display panel provided by an embodiment of the present invention;

[0187] Fig.24 is a structural schematic diagram of a brightness compensation device for a display panel provided by an embodiment of the present invention;

[0188] Fig.25 is a schematic structural diagram of another brightness compensation device for a display panel provided by an embodiment of the present invention;

[0189] Fig.26 is a schematic structural diagram of another brightness compensation device for a display panel provided by an embodiment of the present invention;

[0190] Fig. 27 is a schematic structural diagram of another brightness compensation device for a display panel provided by an embodiment of the present invention;

[0191] Fig.28 is a schematic structural diagram of another brightness compensation device for a display panel provided by an embodiment of the present invention;

[0192] Fig.29 is a structural schematic diagram of a display device provided by an embodiment of the present invention;

[0193] Fig.30 is a cross-sectional view of another display panel provided by an embodiment of the present invention;

[0194] Fig.31 It is an enlarged view of an isolated structure;

[0195] Fig.32 This is an enlarged view of another isolated structure;

[0196] Fig.33 This is another schematic diagram of the pixel arrangement structure. DETAILED DESCRIPTION

[0197] 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.

[0198] 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.

[0199] As described in the background technology, the prior art still has the problem of poor display effect of the display panel. Through the invention research, it is found that in the related technology, when performing the Demura (eliminating display unevenness) operation, after obtaining the brightness compensation data corresponding to each pixel point, multiple pixels are usually regarded as a pixel block, and the brightness compensation data corresponding to multiple pixels in the pixel block are compressed into a compensation value (for example, the average value of the brightness compensation data corresponding to multiple pixels). This compensation value cannot take into account defective pixels and cannot accurately compensate for defective pixels, which affects the Demura effect and causes poor display effect.

[0200] Based on the above reasons, an embodiment of the present invention provides a brightness compensation method for a display panel. Figure 1 is a schematic diagram of a display panel provided by an embodiment of the present invention, with reference to Figure 1 The display panel includes at least one primary color pixel of a light emitting color, at least one primary color pixel is a defective pixel, Figure 1The display panel is shown as an example including three primary color pixels 10 of luminous colors, a first primary color pixel, a second primary color pixel and a third primary color pixel, for example, the first primary color pixel, the second primary color pixel and the third primary color pixel are red pixel 11, green pixel 12 and blue pixel 13 respectively. The primary color pixel 10 includes at least one primary color sub-pixel, Figure 1 , the case where the primary color pixel includes two primary color sub-pixels with the same corresponding luminous color is exemplified. Specifically, the red pixel 11 includes a first red sub-pixel R1 and a second red sub-pixel R2, the green pixel 12 includes a first green sub-pixel G1 and a second green sub-pixel G2, and the blue pixel 13 includes a first blue sub-pixel B1 and a second blue sub-pixel B2. It should be noted that the number of primary color sub-pixels included in the primary color pixels 10 of different luminous colors may also be the same or different, and the embodiment of the present invention does not specifically limit this. Figure 2 is a flow chart of a brightness compensation method for a display panel provided by an embodiment of the present invention, with reference to Figure 2 , the brightness compensation method of the display panel includes:

[0201] S110 . Determine pixels to be compensated corresponding to the defective pixels according to the types of the defective pixels of the display panel.

[0202] The pixel to be compensated includes a defective pixel and / or at least one primary color pixel around the defective pixel.

[0203] The type of defective pixel is related to the actual brightness of the defective pixel at the binding point grayscale, and specifically, the type of defective pixel is related to the actual brightness of the primary color sub-pixel in the defective pixel at the binding point grayscale. Exemplarily, in the case where the defective pixel includes a primary color sub-pixel, the types of defective pixels include gray dots, bright dots, and black dots, wherein the gray dots indicate that the actual brightness of the defective pixel at the binding point grayscale is lower than the target brightness corresponding to the binding point grayscale and is greater than 0, the bright dots indicate that the actual brightness of the defective pixel at the binding point grayscale is higher than the target brightness corresponding to the binding point grayscale, and the black dots indicate that the brightness corresponding to the defective pixel at the binding point grayscale is 0 or close to 0.

[0204] In the case where the defective pixel includes at least two primary color sub-pixels, the types of defective pixels can be divided into more types. Taking the case where the defective pixel includes two primary color sub-pixels as an example, the types of defective pixels can be divided into 1 bright spot and 1 black spot, 2 bright spots, 2 black spots, 2 gray spots, 1 gray spot and 1 black spot, 1 bright spot and 1 gray spot, 1 bright spot and 1 normal, 1 gray spot and 1 normal, and 1 black spot and 1 normal. In the case where the defective pixel includes at least two primary color sub-pixels, the bright spot indicates that the actual brightness of the primary color sub-pixel is higher than the target brightness of the primary color sub-pixel under the binding point gray scale, the gray spot indicates that the actual brightness of the primary color sub-pixel is lower than the target brightness of the primary color sub-pixel under the binding point gray scale, and the black spot indicates that the actual brightness of the primary color sub-pixel is 0 or close to 0 under the binding point gray scale. Normal indicates that the actual brightness of the primary color sub-pixel is equal to the target brightness of the primary color sub-pixel under the binding point gray scale.

[0205] In some optional embodiments of the present invention, in order to simplify the calculation, the types of defective pixels can be further classified so that the types of defective pixels are reduced. For example, the defective pixels are classified according to the number of black dot sub-pixels in the primary color pixels. Defective pixels with the same number of black dot sub-pixels are classified into the same type, and those with different numbers of black dot sub-pixels are classified into different types. In other optional embodiments of the present invention, the defective pixels can also be classified according to the number of bright sub-pixels and / or the number of gray dot sub-pixels in the defective pixels. The embodiments of the present invention are not specifically limited here. In another optional embodiment of the present invention, the defective pixels can also be classified according to the sum of the actual brightness of each primary color sub-pixel in the defective pixel under the gray scale of the binding point and the size relationship of the target brightness corresponding to the defective pixel. For example, the sum of the actual brightness of each primary color sub-pixel in the defective pixel under the gray scale of the binding point is greater than or equal to the target brightness corresponding to the defective pixel, such as the first defect type, and the sum of the actual brightness of each primary color sub-pixel in the defective pixel under the gray scale of the binding point is less than the target brightness corresponding to the defective pixel, such as the second defect type. The first defect type and the second defect type are different.

[0206] In some embodiments, the pixel to be compensated corresponding to the defective pixel is determined according to the type of the defective pixel. Optionally, a first correspondence between the type of the defective pixel and the pixel to be compensated corresponding to the defective pixel can be pre-set, and the pixel to be compensated corresponding to the defective pixel is determined according to the type of the defective pixel and the first correspondence. Exemplarily, when the primary color sub-pixels in the defective pixel are all black dot sub-pixels, the defective pixel cannot be lit, and at least one primary color sub-pixel around the defective pixel is determined as the pixel to be compensated corresponding to the defective pixel. For another example, when the sum of the actual brightness of each primary color sub-pixel in the defective pixel under the gray scale of the binding point is greater than or equal to the target brightness corresponding to the defective pixel, the target brightness can be achieved by reducing the brightness of the defective pixel. In this case, the defective pixel itself is determined as the pixel to be compensated corresponding to the defective pixel. For another example, when the sum of the actual brightness of each primary color sub-pixel in the defective pixel under the gray scale of the binding point is less than the target brightness corresponding to the defective pixel, in this case, according to the first correspondence, the defective pixel itself and / or at least one primary color pixel around the defective pixel can be determined as the pixel to be compensated.

[0207] The brightness compensation method of the display panel of this embodiment determines the pixels to be compensated corresponding to the defective pixels according to the types of defective pixels of the display panel, so that when the display panel is subsequently compensated, the brightness compensation can be performed on the pixels to be compensated corresponding to the defective pixels according to the types of defective pixels, so as to achieve brightness compensation for the defective pixels. Different types of defective pixels can determine compensation pixels in different ways, so targeted brightness compensation for defective pixels in the display panel is beneficial to improving the display effect of the display panel and improving user experience.

[0208] In some other embodiments, the pixel to be compensated corresponding to the defective pixel can be determined according to the first target brightness of the defective pixel of the display panel. The first target brightness is the target brightness corresponding to the defective pixel under the bound grayscale. The first target brightness of the defective pixel can be the sum of the brightness of all primary color sub-pixels in the defective pixel, or the average brightness. Specifically, there will be a maximum brightness limit when the display panel is displayed. The maximum brightness limit is used as a preset brightness limit. The maximum brightness of the primary color pixel will not exceed the preset brightness limit. The preset brightness limits corresponding to primary color pixels of different luminous colors can be the same or different. When determining the pixel to be compensated for the defective pixel, it can be determined according to the relationship between the first target brightness of the defective pixel and the preset brightness limit. For example, when the first target brightness is less than or equal to the preset brightness limit, the defective pixel itself can be determined as the pixel to be compensated corresponding to the defective pixel; when the first target brightness is greater than the preset brightness limit, the defective pixel itself and / or at least one primary color pixel around the defective pixel can be determined as the pixel to be compensated.

[0209] In other embodiments, the pixel to be compensated corresponding to the defective pixel can also be determined based on the type of the defective pixel and the first target brightness of the defective pixel. Optionally, the second corresponding relationship between the type of the defective pixel, the first target brightness of the defective pixel and the pixel to be compensated corresponding to the defective pixel is pre-stored. When both the type of the defective pixel and the first target brightness of the defective pixel are known, the pixel to be compensated corresponding to the defective pixel can be determined based on the type of the defective pixel, the first target brightness of the defective pixel and the second corresponding relationship. Optionally, under at least one type corresponding to the defective pixel, when the magnitude relationship between the first target brightness and the preset brightness limit is different, the corresponding pixel to be compensated can be different. Exemplarily, for two defective pixels of the same type, the first target brightness corresponding to one of the defective pixels is greater than the preset brightness limit. In this case, the defective pixel itself and / or at least one primary color pixel around the defective pixel can be determined as the pixel to be compensated; the first target brightness corresponding to the other defective pixel is less than or equal to the preset brightness limit. In this case, the defective pixel itself can be determined as the pixel to be compensated.

[0210] In another optional embodiment of the present invention, the pixel to be compensated may be determined according to the position of the defective pixel. Optionally, a third correspondence between the position of the defective pixel and the position of the pixel to be compensated corresponding to the defective pixel is pre-stored, and when determining the pixel to be compensated, the pixel to be compensated may be determined according to the position of the defective pixel and the third correspondence.

[0211] Figure 3 is a flowchart of another brightness compensation method for a display panel provided by an embodiment of the present invention, referring to Figure 3 Optionally, the brightness compensation method includes:

[0212] S210 , obtaining primary color image data of a display panel, where the primary color image data includes brightness data of primary color sub-pixels in a plurality of primary color pixels at a binding point grayscale.

[0213] Specifically, when the display panel displays the primary color image under the grayscale of the binding point, an optical camera can be used to take a picture of the primary color image, thereby obtaining the primary color image data of the display panel. Optionally, the primary color image data is a monochrome picture. When the display panel displays the primary color image, only the primary color pixels of one luminous color are lit. Exemplarily, in the case where the display panel includes red pixels, green pixels and blue pixels, the primary color images of the display panel are also divided into three types, namely, red images, green images and blue images. That is, the color of the primary color image data is one of red, green or blue. When the display panel displays a red image, only the red pixels are lit; when the display panel displays a green image, only the green pixels are lit; when the display panel displays a blue image, only the blue pixels are lit. In the primary color image data, the brightness data of the primary color sub-pixel under the grayscale of the binding point includes the brightness value of the primary color sub-pixel under the grayscale of the binding point. Optionally, the color of the primary color image data is the same as the luminous color corresponding to the defective pixel.

[0214] Optionally, in this step, the primary color image data of the display panel under at least two binding point grayscales are obtained. In some embodiments, the primary color image data under different binding point grayscales are presented in the form of a brightness data table. The binding point grayscale can be a pre-set grayscale within the display grayscale range. Exemplarily, the binding point grayscale includes one or more of 32 grayscales, 64 grayscales, 128 grayscales, and 255 grayscales. The primary color image data under 32 grayscales, the primary color image data under 64 grayscales, the primary color image data under 128 grayscales, and the primary color image data under 255 grayscales can be obtained respectively.

[0215] Specifically, when at least one primary color sub-pixel in a primary color pixel is a defective sub-pixel, the primary color pixel is a defective pixel, and the brightness data of the defective pixel at the binding point grayscale and the brightness data of the primary color pixels around the defective pixel at the binding point grayscale are obtained and stored. In some embodiments, the primary color pixels around the defective pixel include at least n3 rows of primary color pixels adjacent to the row where the defective pixel is located and / or at least n4 columns of primary color pixels adjacent to the column where the defective pixel is located, where n3 is an integer greater than or equal to 2, and n4 is an integer greater than or equal to 2. Figure 4 is a schematic diagram of multiple primary color pixels, where Figure 4 There are 12 primary color pixels shown, among which three primary color pixels with different luminous colors form a pixel group 1. Figure 4The red pixel in the pixel group of the first row and the first column is a defective pixel. Specifically, in the pixel group of the first row and the first column, the second red sub-pixel R2 of the red pixel is a black dot sub-pixel. The green pixel in the pixel group of the second row and the second column is a defective pixel. Specifically, the first green sub-pixel G1 and the second green sub-pixel G2 in the pixel group of the second row and the second column are gray dot sub-pixels. Then, at least the brightness data of the four pixel groups are acquired. Table 1 is the brightness data corresponding to the four pixel groups in the brightness data table. It can be seen from Table 1 that the brightness data corresponding to the four pixel groups at each binding point grayscale need to be acquired respectively.

[0216] Gray32, Gray64, Gray128 and Gray255 respectively represent grayscale 32, grayscale 64, grayscale 128 and grayscale 255. Lr32_1 represents the brightness corresponding to the first red sub-pixel at grayscale 32. The same is true for other brightness data in the table, which will not be described one by one here.

[0217] Table 1

[0218]

[0219] S220 : Determine the position and / or type of defective pixels of the display panel according to the primary color image data.

[0220] Specifically, according to the brightness data of the primary color sub-pixels in the primary color pixel in the primary color image data, it can be determined whether the primary color pixel is a defective pixel. Optionally, under each binding point grayscale, when the brightness data of each primary color sub-pixel included in the primary color pixel are within the normal brightness range corresponding to the binding point grayscale, the primary color pixel is determined to be a normal pixel; under at least one binding point grayscale, when the brightness data of at least one primary color sub-pixel included in the primary color pixel is outside the normal brightness range corresponding to the binding point grayscale, the primary color pixel is determined to be a defective pixel. Among them, the normal brightness range can be set according to experience, and can also be calculated according to the brightness data corresponding to multiple primary color sub-pixels under the primary color image data.

[0221] In some embodiments, when the brightness data of at least one primary color sub-pixel of the primary color pixel at the binding point gray scale is greater than the corresponding first brightness threshold, and / or the brightness data of at least one primary color sub-pixel of the primary color pixel at the binding point gray scale is less than the corresponding second brightness threshold, the primary color pixel is determined to be a defective pixel; wherein the first brightness thresholds corresponding to different binding point gray scales are different, and the second brightness thresholds corresponding to different binding point gray scales are different.

[0222] In some embodiments, the first brightness threshold is the maximum brightness value within the normal brightness range corresponding to the grayscale of the binding point, and the second brightness threshold is the minimum brightness value within the normal brightness range corresponding to the grayscale of the binding point. The second brightness threshold is smaller than the first brightness threshold.

[0223] In some other embodiments, the first brightness threshold is greater than or equal to the average, median or mode of brightness data of primary color sub-pixels in multiple primary color pixels at the binding point gray scale; and / or the second brightness threshold is less than or equal to the average, median or mode of brightness data of primary color sub-pixels in multiple primary color pixels at the binding point gray scale.

[0224] The primary color image data may also include position information corresponding to the primary color pixel. Optionally, when the primary color pixel is determined to be a defective pixel according to the brightness data of at least one primary color sub-pixel of the primary color pixel at the binding point grayscale, the type of the defective pixel is determined according to the brightness data corresponding to each primary color sub-pixel in the defective pixel, and / or the position of the defective pixel is determined according to the position information corresponding to the defective pixel in the primary color image data.

[0225] Specifically, the primary color sub-pixel in the defective pixel can be determined to be a bright spot, a gray spot or a black spot according to the brightness data corresponding to the primary color sub-pixel in the defective pixel, thereby determining the type of the defective pixel. In some embodiments, when the brightness data of the primary color sub-pixel in the defective pixel is greater than the first brightness threshold, the primary color sub-pixel is determined to be a bright spot; when the brightness data of the primary color sub-pixel in the defective pixel is less than the second brightness threshold and greater than the third brightness threshold, the primary color sub-pixel is determined to be a gray spot; when the brightness data of the primary color sub-pixel in the defective pixel is less than or equal to the third brightness threshold, the primary color sub-pixel is determined to be a black spot. The third brightness threshold is less than the second brightness threshold. When the brightness data of the primary color sub-pixel in the defective pixel is greater than or equal to the second brightness threshold and less than or equal to the first brightness threshold, the primary color sub-pixel is determined to be a normal sub-pixel. In some embodiments, the defective pixels are divided into different types according to the number of at least one of the bright spots, gray spots and black spots in the defective pixels. Optionally, the type of defective pixel is determined according to the number of black dots in the defective pixel, and a defective pixel containing 0 black dot sub-pixels is determined as the first defect type, a defective pixel containing 1 black dot sub-pixel is determined as the second defect type, a defective pixel containing 2 black dot sub-pixels is determined as the third defect type, and so on. Exemplarily, in the case where the primary color pixel includes two sub-pixels, the first defect type includes the following defect forms: 2 bright spots, 2 gray spots, 1 bright spot and 1 gray spot, 1 bright spot and 1 normal, 1 gray spot and 1 normal; the second defect type includes the following defect forms: 1 bright spot and 1 black spot, 1 gray spot and 1 black spot, 1 black spot and 1 normal; the third defect type includes the following defect forms: two black spots. Gray spots can also be called dark spots. That is, a defective pixel containing 2 non-black dot sub-pixels is determined as the first defect type, a defective pixel containing 1 non-black dot sub-pixel is determined as the second defect type, and a defective pixel containing 0 non-black dot sub-pixels is determined as the third defect type.

[0226] For example, in a case where the luminance data of a primary color sub-pixel at the binding point gray level is greater than a corresponding first luminance threshold, the primary color sub-pixel is a bright sub-pixel; in a case where the luminance data of the primary color sub-pixel at the binding point gray level is less than a corresponding second luminance threshold and greater than a corresponding third luminance threshold, the primary color sub-pixel is a gray sub-pixel; in a case where the luminance data of the primary color sub-pixel at the binding point gray level is less than or equal to the corresponding third luminance threshold, the primary color sub-pixel is a black sub-pixel; the third luminance threshold is less than the second luminance threshold.

[0227] For example, after obtaining the primary color image data of the display panel, it further includes:

[0228] Determine the positions of the normal pixels of the display panel according to the primary color image data;

[0229] For example, the luminance data of the primary color sub-pixels of the normal pixels at the binding point gray level is greater than or equal to a corresponding second luminance threshold and less than or equal to a corresponding first luminance threshold.

[0230] Optionally, the position information of the primary color pixels in the primary color image data may include the coordinates of the primary color pixels. Further, the position information of the primary color image in the primary color image data may include the coordinates of the primary color sub-pixels. In this step, the position of the defective pixel can be determined according to the coordinates corresponding to the defective pixel in the primary color image data.

[0231] S230. Determine the compensation pixels corresponding to the defective pixels according to the types of the defective pixels of the display panel.

[0232] For example, the compensation pixels include the defective pixels, and / or at least one primary color pixel around the defective pixel.

[0233] The defective pixel includes i primary color sub-pixels, including j black sub-pixels, where i is an integer greater than or equal to 1, and j is an integer greater than or equal to 0 and less than or equal to i.

[0234] In some embodiments, S110 or S230 includes: in a case where the type of the defective pixel is j < i, for example, in a case where the number of black sub-pixels in the defective pixel is less than the total number of primary color sub-pixels in the defective pixel, at least the defective pixel and / or at least one primary color pixel around the defective pixel are determined as the compensation pixels according to the first target luminance of the defective pixel; in a case where the type of the defective pixel is j = i, for example, in a case where the number of black sub-pixels in the defective pixel is equal to the total number of primary color sub-pixels in the defective pixel, at least one primary color pixel around the defective pixel is determined as the compensation pixel.

[0235] Figure 5 It is a schematic diagram of a determined compensation pixel, Figure 6 It is a schematic diagram of another determined compensation pixel, Figure 7 It is a schematic diagram of another pixel to be compensated determined. Figure 8 It is a schematic diagram of another pixel to be compensated determined, Fig. 9 It is a schematic diagram of another pixel to be compensated determined, Fig.10 It is a schematic diagram of another pixel to be compensated determined. Among them, Figure 5-Figure 7 it is shown by taking the primary color pixels each including two primary color sub-pixels as an example, Figure 8-Figure 10 it is shown by taking the primary color pixels each including one primary color sub-pixel (red sub-pixel R, green sub-pixel G, blue sub-pixel B) as a reference Figure 5-Figure 10 the first green pixel 121 is a defective pixel. In Figure 5 and Figure 8 the cases shown, the pixel to be compensated corresponding to the defective pixel is the first green pixel 121; in Figure 6 and Fig. 9 the cases shown, the pixel to be compensated corresponding to the defective pixel is the first green pixel 121, and the first red pixel 111 and the first blue pixel 131 around the defective pixel; in Figure 7 and Fig.10 the cases shown, the pixel to be compensated corresponding to the defective pixel is the first green pixel 121, and the four green pixels closest to the defective pixel around the defective pixel (respectively the second green pixel 122 closest to the upper side, the third green pixel 123 closest to the lower side, the fourth green pixel 124 closest to the left side, and the fifth green pixel 125 closest to the right side). Among them, the connection direction of the left side and the right side is Figure 7 and Fig.10 the first direction x in Figure 7 and Fig.10 the second direction y in

[0236] Specifically, the number of black dot sub-pixels can be determined according to the brightness data of each primary color sub-pixel in the defective pixel. Among them, the black dot sub-pixel refers to the sub-pixel that does not emit light at at least one binding point gray level. Optionally, the black dot sub-pixel is the sub-pixel that does not emit light at at least two binding point gray levels. In some embodiments, when the brightness data of the primary color sub-pixel is less than or equal to the third brightness threshold, it is determined that the primary color sub-pixel is a black dot sub-pixel. Among them, the third brightness threshold can be set according to actual experience. In some embodiments, the third brightness threshold is equal to 0.

[0237] Optionally, when the type of the defective pixel is j < i, for example, when the number of black dot sub-pixels in the defective pixel is less than the total number of primary color sub-pixels in the defective pixel, the pixel to be compensated is determined according to the magnitude relationship between the first target brightness of the defective pixel and the preset brightness limit value.

[0238] Among them, when the first target brightness is less than or equal to the preset brightness limit value, it indicates that the first target brightness can be achieved by adjusting the brightness of the defective pixel. In this case, the defective pixel is determined as a pixel to be compensated. That is, when the type of the defective pixel is j < i, for example, when the number of black dot sub-pixels in the defective pixel is less than the total number of primary color sub-pixels in the defective pixel, and the first target brightness of the defective pixel is less than or equal to the preset brightness limit value, the defective pixel is determined as a pixel to be compensated. Reference can be made to Figure 5 and Figure 8 the situations shown.

[0239] Optionally, when the type of the defective pixel is j < i, for example, when the number of black dot sub-pixels in the defective pixel is less than the total number of primary color sub-pixels in the defective pixel, and the first target brightness of the defective pixel is greater than the preset brightness limit value, the defective pixel and at least one primary color pixel around the defective pixel are determined as pixels to be compensated.

[0240] When the first target brightness of the defective pixel is greater than the preset brightness limit value, only adjusting the brightness of the defective pixel (which can be used as the first type of pixel to be compensated) cannot reach the first target brightness. In this case, according to the actual situation, the defective pixel can be determined as a pixel to be compensated (corresponding to Figure 5 and Figure 8 the situations shown), and by adjusting the brightness of the defective pixel, the brightness of the defective pixel can be made closer to the first target brightness; or, at least one primary color pixel around the defective pixel can be determined as a pixel to be compensated (which can be used as the second type of pixel to be compensated), and by increasing the brightness and / or decreasing the brightness of at least one primary color pixel around the defective pixel, the brightness of the defective pixel can be made closer to the first target brightness in terms of visual effect, and / or the color deviation can be improved; or, both the defective pixel and at least one primary color pixel around the defective pixel can be determined as pixels to be compensated (corresponding to Figure 6 and Figure 7 、 Fig. 9 and Fig.10 the situations shown).

[0241] In some embodiments, when the type of the defective pixel is j < i, the defective pixel includes one non-black dot sub-pixel, and the preset brightness limit value is greater than the brightness value corresponding to the maximum gray level of the non-black dot sub-pixel in the defective pixel within the preset gray level range; or, the defective pixel includes at least two non-black dot sub-pixels, and the preset brightness limit value LT is greater than the sum of the brightness values corresponding to the maximum gray levels of the non-black dot sub-pixels in the defective pixel within the preset gray level range.

[0242] In some embodiments, a defective pixel includes a non - black sub - pixel, and the actual brightness of the defective pixel is equal to the brightness of the non - black sub - pixel in the defective pixel. Or, the defective pixel includes at least two non - black sub - pixels, and the actual brightness of the defective pixel is equal to the sum of the brightnesses of the non - black sub - pixels in the defective pixel.

[0243] Optionally, when the type of the defective pixel is j < i, in the case where the defective pixel includes a non - black sub - pixel, the preset brightness limit value is equal to the brightness of the non - black sub - pixel under the preset gray - scale limit value. In the case where the defective pixel includes at least two non - black sub - pixels, the preset brightness limit value is equal to the sum of the brightnesses of the non - black sub - pixels in the defective pixel under the preset gray - scale limit value.

[0244] Specifically, in order to ensure that the primary - color pixels can also obtain good brightness compensation at a relatively high gray - scale, a preset brightness limit value and a corresponding preset gray - scale limit value are usually set in the driving chip, so that when the target brightness of the primary - color pixels at a relatively high gray - scale exceeds the brightness value of the maximum gray - scale within the preset gray - scale range, brightness compensation can still be performed. Exemplarily, the preset gray - scale range includes gray - scale 0 to the nominal maximum gray - scale of the display panel, the preset gray - scale limit value is the maximum gray - scale that the display panel can actually display, and the preset brightness limit value corresponding to the primary - color pixel is the brightness of the primary - color pixel under the preset gray - scale limit value. This preset brightness limit value is greater than the brightness value corresponding to the maximum gray - scale within the preset gray - scale range of the non - black sub - pixel. In some embodiments, the preset brightness limit value is greater than the brightness value corresponding to the maximum gray - scale within the preset gray - scale range of the primary - color pixel in a normal pixel. Optionally, the preset gray - scale limit value is greater than the maximum gray - scale within the preset gray - scale range. Exemplarily, the preset gray - scale range is 0 - 255 gray - scales, and the preset gray - scale limit value is 270 gray - scales. In some embodiments, the brightness of the primary - color pixel is equal to the sum of the brightnesses corresponding to each primary - color sub - pixel. Then, in the case where the defective pixel includes at least two non - black sub - pixels, the preset brightness limit value is greater than the sum of the brightness values corresponding to the maximum gray - scale within the preset gray - scale range of the non - black sub - pixels in the defective pixel.

[0245] Optionally, the number of binding gray - scales is at least two, and the binding gray - scales are within the preset gray - scale range.

[0246] In some embodiments, the binding gray - scale includes the maximum gray - scale within the preset gray - scale range.

[0247] For example, the number of black sub - pixels of at least two types of defective pixels is different, and / or the number of non - black sub - pixels of at least two types of defective pixels is different.

[0248] Optionally, the number of black dot sub-pixels in the defective pixel is equal to 0, 1 or 2. Exemplarily, if the primary color pixel includes two primary color sub-pixels, the number of black sub-pixels in the defective pixel is 0, 1 or 2. In the case where the primary color pixel includes at least three primary color sub-pixels, the number of black sub-pixels in the defective pixel may also be greater than 2. In the same primary color pixel, the luminous colors corresponding to all primary color sub-pixels are the same.

[0249] Optionally, the defective pixel includes at least one defective sub-pixel, and the defective sub-pixel includes a black dot sub-pixel, a gray dot sub-pixel or a bright dot sub-pixel; under the same data voltage, the brightness of the black dot sub-pixel, the gray dot sub-pixel and the bright dot sub-pixel increases sequentially.

[0250] Optionally, the non-black dot sub-pixels in the defective pixel include normal sub-pixels, gray dot sub-pixels or bright dot sub-pixels; under the same data voltage, the brightness of the gray dot sub-pixels, normal sub-pixels and bright dot sub-pixels increases in sequence.

[0251] The data voltage is a voltage transmitted to a data line of a pixel circuit of a sub-pixel, and the data line is connected to a driving transistor DT via a data writing transistor T1. Fig.11 is a schematic structural diagram of a pixel circuit provided by an embodiment of the present invention, Fig.12 It is a structural diagram of another pixel circuit. Fig.13 yes Fig.12 The schematic diagram of the connection relationship between the pixel circuit and the light-emitting device shown in FIG. Fig.14 yes Fig.11 The schematic diagram of the connection relationship between the pixel circuit and the light-emitting device shown in FIG. Fig.13 and Fig.14 It can be a schematic diagram of the connection relationship between the pixel circuit and the light-emitting device in the same pixel group. Figure 11-Figure 14The pixel circuit includes a driving transistor DT, a data writing transistor T1 and a compensation transistor T4, wherein the data writing transistor T1 is connected between the data line Data and the first electrode of the driving transistor DT, and the compensation transistor T4 is connected between the second electrode and the gate of the driving transistor DT. Optionally, the pixel circuit also includes a first light-emitting control transistor T2 and a second light-emitting control transistor T3, the first light-emitting control transistor T2 is connected between the first signal line VDD and the first electrode of the driving transistor DT; the second light-emitting control transistor T3 is connected between the second electrode of the driving transistor DT and the first electrode of the light-emitting device 101, and the second electrode of the light-emitting device 101 is connected to the second signal line VSS; the gate of the first light-emitting control transistor T2 and the gate of the second light-emitting control transistor T3 are connected to the light-emitting control signal line EM; optionally, the pixel circuit also includes a first initialization transistor T5, the gate of the first initialization transistor T5 is connected to the second scan line Scan2, the first electrode of the first initialization transistor T5 is connected to the first initialization signal line Vref1, and the second electrode of the first initialization transistor T5 is connected to the gate of the driving transistor DT; optionally, the pixel circuit also includes a second initialization transistor T6, the gate of the second initialization transistor T6 is connected to the third scan line Scan3, the first electrode of the second initialization transistor T6 is connected to the second initialization signal line Vref2, and the second electrode of the second initialization transistor T6 is connected to the first electrode of the light-emitting device 101. Optionally, the pixel circuit further includes a storage capacitor Cst, a first end of the storage capacitor Cst is connected to the gate of the driving transistor DT, and a second end of the storage capacitor Cst is connected to the first signal line VDD. The data voltage can be written to the gate of the driving transistor DT through the data writing transistor T1, the driving transistor DT, and the compensation transistor T4. The gate of the data writing transistor T1 is connected to the first scan line Scan1. The gate of the compensation transistor T4 is connected to the first scan line Scan1. Fig.11 The example shows that one light emitting device 101 in one primary color pixel is connected to one pixel circuit. Fig.12 The example shows that the light emitting devices 101 of two primary color sub-pixels in a primary color pixel are connected to the same pixel circuit.

[0252] For example, Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.14 As shown, the primary color pixel 10 includes a primary color sub-pixel; a primary color sub-pixel includes a pixel circuit and a light-emitting device, and the pixel circuit is used to drive the light-emitting device.

[0253] Or, if Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig.12, Fig.13 As shown, the primary color pixel 10 includes at least two primary color sub-pixels; each primary color sub-pixel includes a pixel circuit and a light-emitting device, and the pixel circuit is used to drive the light-emitting device; at least two primary color sub-pixels share the same pixel circuit. At least two primary color sub-pixels of the same primary color pixel have the same luminous color. The pixel circuit can generate a driving current to drive the light-emitting device to emit light.

[0254] For example, the number of gray sub-pixels in at least two types of defective pixels is different, and / or the number of bright sub-pixels in at least two types of defective pixels is different, and / or the number of normal sub-pixels in at least two types of defective pixels is different, and / or the number of black sub-pixels in at least two types of defective pixels is different.

[0255] For example, at least one primary color pixel around the defective pixel that is determined as a pixel to be compensated includes one or more of a normal sub-pixel, a black dot sub-pixel, a gray dot sub-pixel, and a bright dot sub-pixel.

[0256] For example, after determining the pixel to be compensated corresponding to the defective pixel according to the type of the defective pixel of the display panel, the brightness compensation method also includes: determining the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel.

[0257] Optionally, the compensation grayscale of the pixel to be compensated includes the compensation grayscale corresponding to at least one primary color sub-pixel in the pixel to be compensated. The gamma curve may be a correspondence between grayscale and brightness.

[0258] Specifically, when the pixel to be compensated corresponding to the defective pixel includes the defective pixel itself, the compensation grayscale corresponding to the primary color sub-pixel when the defective pixel reaches the first target brightness can be determined based on the gamma curve corresponding to at least one primary color sub-pixel in the defective pixel. In some embodiments, the brightness of the defective pixel is equal to the sum of the brightness of each primary color sub-pixel in the defective pixel. In this case, the determined compensation grayscale of the primary color sub-pixel satisfies that, on the gamma curve corresponding to the primary color sub-pixel, the sum of the brightness corresponding to the primary color sub-pixel at the compensation grayscale corresponding to the primary color sub-pixel is equal to the first target brightness.

[0259] In the case where the pixels to be compensated corresponding to the defective pixel include at least one primary color pixel around the defective pixel, the raised brightness value and / or lowered brightness value of at least one primary color pixel around the defective pixel can be first determined according to the first target brightness of the defective pixel, and then the target brightness of the primary color pixel is obtained according to the raised brightness value and / or lowered brightness value of the primary color pixel, and the corresponding compensation grayscale is determined on the gamma curve of the primary color sub-pixel in the primary color pixel according to the target brightness of the primary color pixel. That is, in the case where the defective pixel itself cannot reach the first target brightness, the brightness of the defective pixel can be indirectly compensated from the visual effect by raising the brightness and / or lowering the brightness of at least one primary color pixel around the defective pixel. Exemplarily, in the case where the first target brightness is greater than the preset brightness limit, the brightness of at least one primary color pixel around the defective pixel that is different from the luminous color of the defective pixel can be reduced to improve the color deviation. In the case where the first target brightness is greater than the preset brightness limit, the brightness of at least one primary color pixel around the defective pixel that is the same as the luminous color of the defective pixel can also be increased to improve the brightness of the defective pixel in the visual effect.

[0260] The brightness compensation method of the display panel of the present embodiment determines the defective pixel and / or at least one primary color pixel around the defective pixel as the pixel to be compensated according to the type of the defective pixel of the display panel and / or the first target brightness of the defective pixel of the display panel, determines the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel, and subsequently performs brightness compensation on the pixel to be compensated according to the compensation grayscale of the pixel to be compensated. In this way, the defective pixel in the display panel and / or at least one primary color pixel around the defective pixel can be accurately compensated using matching brightness compensation data, which is beneficial to improving the display effect of the display panel and improving the user experience.

[0261] For example, the defective pixel includes m1 non-black dot sub-pixels, where m1 is an integer greater than or equal to 1. In some embodiments, when the pixel to be compensated includes the defective pixel, determining the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel includes: determining the compensation grayscale of the non-black dot sub-pixel in the defective pixel according to the first target brightness of the defective pixel and the gamma curve corresponding to the m1 non-black dot sub-pixels in the defective pixel; where m1 is an integer greater than or equal to 1.

[0262] In some embodiments, the compensation grayscale of m1 non-black dot sub-pixels satisfies that the sum of the brightness corresponding to the compensation grayscale of m1 non-black dot sub-pixels on their respective gamma curves is equal to the first target brightness. In other embodiments, the compensation grayscale of m1 non-black dot sub-pixels satisfies that the average brightness corresponding to the compensation grayscale of m1 non-black dot sub-pixels on their respective gamma curves is equal to the first target brightness. In this way, it can be ensured that when the compensation grayscale of m1 non-black dot sub-pixels is determined, the defective pixel can reach the corresponding first target brightness, thereby improving the compensation effect.

[0263] Optionally, the defective pixel in the pixel to be compensated includes m1 non-black dot sub-pixels. In some embodiments, the total number of non-black dot sub-pixels in the defective pixel is equal to m1. Optionally, m1 is 1 or 2 or an integer greater than 2. Exemplarily, when the defective pixel includes one primary color sub-pixel, the number of non-black dot sub-pixels may be 1; when the defective pixel includes two primary color sub-pixels, the number of non-black dot sub-pixels may be 1 or 2; when the defective pixel includes at least three primary color sub-pixels, m1 is 1 or 2 or an integer greater than 2.

[0264] In some embodiments, when the first target brightness Ln_tar of the defective pixel at the binding point grayscale is less than or equal to the actual brightness LGmax corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is determined according to the first target brightness of the defective pixel and the first gamma curve of m1 non-black dot sub-pixels. The first gamma curve is obtained by fitting the brightness data of the non-black dot sub-pixel at at least two binding point grayscales within the preset grayscale range; the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is less than or equal to the maximum grayscale within the preset grayscale range.

[0265] Among them, the first gamma curve can be pre-fitted before the step of determining the compensation grayscale. Since the compensation grayscale corresponding to the non-black dot sub-pixel under the binding point grayscale is less than or equal to the maximum grayscale within the preset grayscale range, when determining the first gamma curve, it is fitted according to the brightness data under at least two binding point grayscales within the preset grayscale range. Optionally, the compensation grayscales of m1 non-black dot sub-pixels satisfy that the sum of the brightness corresponding to the compensation grayscales corresponding to the m1 non-black dot sub-pixels on their respective first gamma curves is equal to the first target brightness. For example, when the first target brightness of the defective pixel under the binding point grayscale is less than or equal to the actual brightness corresponding to the defective pixel under the maximum grayscale within the preset grayscale range, the first target brightness of the defective pixel is equal to the sum of the brightness of the first gamma curve of the m1 non-black dot sub-pixels in the defective pixel under the compensation grayscale. In some other embodiments, the compensation grayscales of m1 non-black dot sub-pixels satisfy that the average of the brightness corresponding to the compensation grayscales corresponding to the m1 non-black dot sub-pixels on their respective first gamma curves is equal to the first target brightness.

[0266] Fig.15 It is a schematic diagram for determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness Ln_tar of the defective pixel at the binding point grayscale is less than or equal to the actual brightness LGmax corresponding to the defective pixel at the maximum grayscale within the preset grayscale range. Fig.15 It shows a situation where a primary color pixel includes two primary color sub-pixels, a defective pixel includes two primary color sub-pixels, for example, they share the same pixel circuit, and both primary color sub-pixels are non-black dot sub-pixels (corresponding to the first defect type in the above embodiment). Fig.15 It can also represent that the primary color pixel includes at least three primary color sub-pixels, for example, sharing the same pixel circuit, the defective pixel includes at least three primary color sub-pixels, and the defective pixel includes two non-black dot sub-pixels and at least one black dot sub-pixel. Fig.15 The horizontal coordinate Gray represents the grayscale, and the vertical coordinate Lv represents the brightness. The horizontal coordinate of point A1 is the compensation grayscale corresponding to the defective pixel under the grayscale of the binding point, and the vertical coordinate of point A1 is the first target brightness corresponding to the defective pixel under the grayscale of the binding point. According to the formula corresponding to the first gamma curve of the two non-black sub-pixels and the first target brightness corresponding to the defective pixel, the compensation grayscale of the non-black sub-pixel can be determined. The two non-black sub-pixels are respectively recorded as the first non-black sub-pixel and the second non-black sub-pixel. According to the first gamma curve L1 corresponding to the first non-black sub-pixel, it can be obtained:

[0267] Ln_1_tar=LGmax_1*(Gn1_tar / Gmax)^gamma1;

[0268] Among them, Ln_1_tar is the first sub-target brightness corresponding to the first non-black dot sub-pixel of the defective pixel at the first target brightness; LGmax_1 is the actual brightness corresponding to the first non-black dot sub-pixel at the maximum grayscale within the preset grayscale range; Gn1_tar represents the compensated grayscale corresponding to the first non-black dot sub-pixel, Gmax represents the maximum grayscale within the preset grayscale range, and gamma1 represents the gamma coefficient of the first gamma curve L1 corresponding to the first non-black dot sub-pixel, which can be obtained according to curve fitting.

[0269] According to the first gamma curve L2 corresponding to the second non-black dot sub-pixel, it can be obtained:

[0270] Ln_2_tar=LGmax_2*(Gn2_tar / Gmax)^gamma2;

[0271] Among them, Ln_2_tar is the second sub-target brightness corresponding to the second non-black dot sub-pixel of the defective pixel under the first target brightness; LGmax_2 is the actual brightness corresponding to the second non-black dot sub-pixel at the maximum grayscale within the preset grayscale range; Gn2_tar represents the compensated grayscale corresponding to the second non-black dot sub-pixel, and gamma2 represents the gamma coefficient of the first gamma curve L2 corresponding to the second non-black dot sub-pixel, which can be obtained according to curve fitting.

[0272] The first target brightness Ln_tar satisfies the following relationship with the first sub-target brightness and the second sub-target brightness:

[0273] Ln_tar=Ln_1_tar+Ln_2_tar.

[0274] Based on this, the compensation grayscale corresponding to the first non-black dot sub-pixel and the compensation grayscale of the second non-black dot sub-pixel can be determined respectively. In some embodiments, each primary color sub-pixel in the primary color pixel is connected to the same pixel circuit. In this case, the compensation grayscales corresponding to each primary color sub-pixel are the same. Accordingly, the compensation grayscales corresponding to the first non-black dot sub-pixel and the second non-black dot sub-pixel are the same, that is, Figure 5 In the illustrated case, the compensation grayscale corresponding to the first non-black dot sub-pixel and the second non-black dot is recorded as Gn_tar, that is, Gn1_tar=Gn2_tar=Gn_tar. For example, LGmax=LGmax_1+LGmax_2.

[0275] Fig.16 It is another schematic diagram for determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness Ln_tar of the defective pixel at the binding point grayscale is less than or equal to the actual brightness LGmax corresponding to the defective pixel at the maximum grayscale within the preset grayscale range. Fig.16 It shows the case where the primary color pixel includes two primary color sub-pixels and the defective pixel includes two primary color sub-pixels, for example, they share the same pixel circuit, and one primary color sub-pixel is a non-black dot sub-pixel and the other primary color sub-pixel is a black dot sub-pixel (corresponding to the second defect type in the above embodiment). According to the formula corresponding to the first gamma curve of the non-black dot sub-pixel and the first target brightness corresponding to the defective pixel, the compensation grayscale of the non-black dot sub-pixel can be determined. Fig.16 It can also be expressed as follows: when the primary color pixel includes a primary color sub-pixel, when the defective pixel includes a primary color sub-pixel, the defective pixel includes a non-black dot sub-pixel, the non-black dot sub-pixel can be a bright dot sub-pixel or a gray dot sub-pixel, and according to the formula corresponding to the first gamma curve of the non-black dot sub-pixel and the first target brightness corresponding to the defective pixel, the compensation gray scale of the non-black dot sub-pixel can be determined. Fig.16It can also be expressed that: the primary color pixel includes at least three primary color sub-pixels, for example, when the same pixel circuit is shared, when the defective pixel includes at least three primary color sub-pixels, the defective pixel includes one non-black dot sub-pixel and at least two black dot sub-pixels, and according to the formula corresponding to the first gamma curve of the non-black dot sub-pixel and the first target brightness corresponding to the defective pixel, the compensation grayscale of the non-black dot sub-pixel can be determined. The non-black dot sub-pixel is recorded as the first non-black dot sub-pixel, and according to the first gamma curve L1 corresponding to the first non-black dot sub-pixel, it can be obtained:

[0276] Ln_1_tar=LGmax_1*(Gn1_tar / Gmax)^gamma1;

[0277] Among them, Ln_1_tar is the first sub-target brightness corresponding to the first non-black dot sub-pixel of the defective pixel at the first target brightness; LGmax_1 is the actual brightness corresponding to the first non-black dot sub-pixel at the maximum grayscale within the preset grayscale range; Gn1_tar represents the compensated grayscale corresponding to the first non-black dot sub-pixel, Gmax represents the maximum grayscale within the preset grayscale range, and gamma1 represents the gamma coefficient of the first gamma curve L1 corresponding to the first non-black dot sub-pixel, which can be obtained according to curve fitting.

[0278] The brightness of the first target and the brightness of the first sub-target satisfy the following relationship:

[0279] Ln_tar=Ln_1_tar.

[0280] Based on this, the compensation gray scale corresponding to the first non-black dot sub-pixel can be determined. LGmax=LGmax_1.

[0281] In some embodiments, when the first target brightness Ln_tar of the defective pixel at the binding point grayscale is greater than the actual brightness LGmax corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit LT, the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is determined according to the first target brightness of the defective pixel and the second gamma curve of m1 non-black dot sub-pixels; wherein the second gamma curve is fitted according to the brightness data of the primary color sub-pixel at at least two binding point grayscales within the preset grayscale range, and the preset brightness limit corresponding to the preset grayscale limit; the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is greater than the maximum grayscale within the preset grayscale range, and is less than or equal to the preset grayscale limit.

[0282] Among them, the second gamma curve can be pre-fitted before the step of determining the compensation grayscale. Since the compensation grayscale corresponding to the non-black dot sub-pixel under the binding point grayscale is greater than the maximum grayscale within the preset grayscale range, when determining the second gamma curve, it is fitted according to the brightness data under at least two binding point grayscales within the preset grayscale range and the preset brightness limit corresponding to the preset grayscale limit. Optionally, the compensation grayscale of m1 non-black dot sub-pixels satisfies that the sum of the brightness corresponding to the compensation grayscale corresponding to the m1 non-black dot sub-pixels on their respective second gamma curves is equal to the first target brightness. For example, when the first target brightness of the defective pixel under the binding point grayscale is greater than the actual brightness corresponding to the defective pixel under the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit, the first target brightness of the defective pixel is equal to the sum of the brightness of the second gamma curve of the m1 non-black dot sub-pixels in the defective pixel under the compensation grayscale. In some other embodiments, the compensation grayscale of m1 non-black dot sub-pixels satisfies that the average of the brightness corresponding to the compensation grayscale corresponding to the m1 non-black dot sub-pixels on their respective second gamma curves is equal to the first target brightness.

[0283] Fig.17 It is a schematic diagram for determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness Ln_tar of the defective pixel at the binding point grayscale is greater than the actual brightness LGmax corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit LT. Fig.17 It shows a situation where the defective pixel includes two primary color sub-pixels, for example, sharing the same pixel circuit, and the two primary color sub-pixels are both non-black dot sub-pixels (corresponding to the first defect type in the above embodiment). Fig.17 It can also represent that the primary color pixel includes at least three primary color sub-pixels, for example, sharing the same pixel circuit, the defective pixel includes at least three primary color sub-pixels, and the defective pixel includes two non-black dot sub-pixels and at least one black dot sub-pixel. According to the formula corresponding to the second gamma curve of the two non-black dot sub-pixels and the first target brightness corresponding to the defective pixel, the compensation grayscale of the non-black dot sub-pixel can be determined. The two non-black dot sub-pixels are respectively recorded as the first non-black dot sub-pixel and the second non-black dot sub-pixel. According to the second gamma curve L3 corresponding to the first non-black dot sub-pixel, it can be obtained:

[0284] Ln_1_tar=LT_1*(Gn1_tar / GT)^gamma3;

[0285] Among them, Ln_1_tar is the first sub-target brightness corresponding to the first non-black dot sub-pixel of the defective pixel under the first target brightness; LT_1 is the first preset brightness limit corresponding to the first non-black dot sub-pixel; Gn1_tar represents the compensation grayscale corresponding to the first non-black dot sub-pixel, GT represents the preset grayscale limit, and gamma1 represents the gamma coefficient of the second gamma curve L3 corresponding to the first non-black dot sub-pixel, which can be obtained according to curve fitting.

[0286] According to the second gamma curve L4 corresponding to the second non-black dot sub-pixel, it can be obtained:

[0287] Ln_2_tar=LT_2*(Gn2_tar / GT)^gamma4;

[0288] Among them, Ln_2_tar is the second sub-target brightness corresponding to the second non-black dot sub-pixel of the defective pixel under the first target brightness; LT_2 is the second preset brightness limit corresponding to the second non-black dot sub-pixel; Gn2_tar represents the compensation grayscale corresponding to the second non-black dot sub-pixel, GT represents the preset grayscale limit, and gamma4 represents the gamma coefficient of the second gamma curve L4 corresponding to the second non-black dot sub-pixel, which can be obtained according to curve fitting.

[0289] The first target brightness, the first sub-target brightness, and the second sub-target brightness satisfy the following relationship:

[0290] Ln_tar=Ln_1_tar+Ln_2_tar.

[0291] Based on this, the compensation grayscale corresponding to the first non-black dot sub-pixel and the compensation grayscale corresponding to the second non-black dot sub-pixel can be determined respectively. In some embodiments, each primary color sub-pixel in the primary color pixel is connected to the same pixel circuit. In this case, the compensation grayscales corresponding to each primary color sub-pixel are the same. Accordingly, the compensation grayscales corresponding to the first non-black dot sub-pixel and the second non-black dot are the same, that is, Fig.17 In the illustrated case, the compensation grayscale corresponding to the first non-black dot sub-pixel and the second non-black dot is recorded as Gn_tar, that is, Gn1_tar=Gn2_tar=Gn_tar. For example, the preset brightness limit LT=LT_1+LT_2. For example, gamma1=gamma3. For example, gamma2=gamma4.

[0292] Fig.18 Another schematic diagram is to determine the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness of the defective pixel under the binding point grayscale is greater than the actual brightness corresponding to the defective pixel under the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit.

[0293] Fig.18It shows a situation where a defective pixel includes two primary color sub-pixels, for example, sharing the same pixel circuit, and one primary color sub-pixel is a non-black dot sub-pixel, and the other primary color sub-pixel is a black dot sub-pixel (corresponding to the second defect type in the above embodiment). According to the formula corresponding to the second gamma curve of the non-black dot sub-pixel and the first target brightness corresponding to the defective pixel, the compensation grayscale of the non-black dot sub-pixel can be determined. Fig.18 It can also be expressed that: when the primary color pixel includes a primary color sub-pixel, the defective pixel includes a primary color sub-pixel, the defective pixel includes a non-black dot sub-pixel, the non-black dot sub-pixel can be a bright dot sub-pixel or a gray dot sub-pixel, and according to the formula corresponding to the second gamma curve of the non-black dot sub-pixel and the first target brightness corresponding to the defective pixel, the compensation gray scale of the non-black dot sub-pixel can be determined. Fig.18 It can also be represented that the primary color pixel includes at least three primary color sub-pixels, the defective pixel includes at least three primary color sub-pixels, for example, sharing the same pixel circuit, and the defective pixel includes a non-black dot sub-pixel and at least two black dot sub-pixels. The non-black dot sub-pixel is recorded as the first non-black dot sub-pixel, and according to the second gamma curve L3 corresponding to the first non-black dot sub-pixel, it can be obtained:

[0294] Ln_1_tar=LT_1*(Gn1_tar / GT)^gamma3;

[0295] Among them, Ln_1_tar is the first sub-target brightness corresponding to the first non-black dot sub-pixel of the defective pixel at the first target brightness; LT_1 is the first preset brightness limit corresponding to the first non-black dot sub-pixel; Gn1_tar represents the compensation grayscale corresponding to the first non-black dot sub-pixel, GT represents the preset grayscale limit, and gamma1 represents the gamma coefficient of the second gamma curve L3 corresponding to the first non-black dot sub-pixel, which can be obtained according to curve fitting. For example, the preset brightness limit LT = LT_1.

[0296] The brightness of the first target and the brightness of the first sub-target satisfy the following relationship:

[0297] Ln_tar=Ln_1_tar.

[0298] Based on this, the compensation gray scale corresponding to the first non-black dot sub-pixel can be determined.

[0299] In some embodiments, the second gamma curve includes part or all of the first gamma curve. The first gamma curve is a segment of the second gamma curve, specifically a curve segment of the second gamma curve corresponding to a preset grayscale range.

[0300] Fig.19 A schematic diagram of determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness Ln_tar of the defective pixel at the binding point grayscale is greater than the preset brightness limit LT. Fig.19 It shows a case where the defective pixel includes two primary color sub-pixels, and both primary color sub-pixels are non-black dot sub-pixels (corresponding to the first defect type in the above embodiment). Fig.19 It can also represent that the primary color pixel includes at least three primary color sub-pixels, for example, sharing the same pixel circuit, the defective pixel includes at least three primary color sub-pixels, and the defective pixel includes two non-black dot sub-pixels and at least one black dot sub-pixel. Fig. 20 Another schematic diagram of determining the compensation grayscale corresponding to the non-black dot sub-pixel when the first target brightness of the defective pixel at the binding point grayscale is greater than the preset brightness limit. Fig. 20 It shows the case where the defective pixel includes two primary color sub-pixels, one of which is a non-black dot sub-pixel and the other is a black dot sub-pixel (corresponding to the second defect type in the above embodiment). Fig. 20 It can also be expressed that: when the primary color pixel includes one primary color sub-pixel, the defective pixel includes one primary color sub-pixel, and the defective pixel includes one non-black dot sub-pixel. Fig. 20 It can also represent the case where the primary color pixel includes at least three primary color sub-pixels, for example, sharing the same pixel circuit, the defective pixel includes at least three primary color sub-pixels, and the defective pixel includes at least two black dot sub-pixels and one non-black dot sub-pixel. Optionally, in the case where the pixel to be compensated includes a defective pixel, determining the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel also includes: in the case where the first target brightness of the defective pixel at the binding point grayscale is greater than the preset brightness limit, according to the first target brightness of the defective pixel and the second gamma curve of m1 non-black dot sub-pixels, determining the preset grayscale limit corresponding to the preset brightness limit as the compensation grayscale corresponding to the non-black dot sub-pixel; wherein the second gamma curve is obtained by fitting the brightness data of the primary color sub-pixel at at least two binding point grayscales within the preset grayscale range and the preset brightness limit corresponding to the preset grayscale limit; wherein m1 is an integer greater than or equal to 1. As Fig.19 , the brightness LT_1 of the first non-black dot sub-pixel corresponding to the preset grayscale limit is used as the target brightness Ln_1_tar of the first non-black dot sub-pixel, and the brightness LT_2 of the second non-black dot sub-pixel corresponding to the preset grayscale limit is used as the target brightness Ln_2_tar of the second non-black dot sub-pixel. Fig. 20 As shown, the brightness LT_1 of the first non-black dot sub-pixel corresponding to the preset grayscale limit is used as the target brightness Ln_1_tar of the first non-black dot sub-pixel and as the first target brightness Ln_tar of the entire defective pixel.

[0301] Specifically, when the first target brightness of the defective pixel under the binding point grayscale is greater than the preset brightness limit, the preset grayscale limit corresponding to the preset brightness limit is determined as the compensation grayscale corresponding to the non-black dot sub-pixel, so that the defective pixel can reach the maximum brightness, that is, the brightness of the defective pixel can be closest to the first target brightness, which is beneficial to improving the display effect.

[0302] In some embodiments, when the first target brightness of the defective pixel under the tie point grayscale is greater than the preset brightness limit, the pixel to be compensated also includes at least one primary color pixel around the defective pixel. After the preset grayscale limit corresponding to the preset brightness limit is determined as the compensation grayscale corresponding to the non-black dot sub-pixel, determining the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel further includes: determining that at least one primary color pixel around the defective pixel corresponds to the compensation grayscale corresponding to the defective pixel under the tie point grayscale according to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit and the gamma curve of at least one primary color pixel around the defective pixel.

[0303] Continue to refer Fig.19 and Fig. 20 Specifically, the deviation LD between the first target brightness corresponding to the defective pixel and the preset brightness limit is obtained according to the difference between the two. Since the compensation limit has been reached when the defective pixel is compensated to the preset brightness limit, the deviation LD cannot be achieved by compensating the defective pixel. For example, Ln_tar-LT=LD. Optionally, in this embodiment, according to the deviation LD, the target brightness corresponding to the primary color pixel with the same or different luminous color as the defective pixel in at least one primary color pixel around the defective pixel as the pixel to be compensated can be adjusted, and then, according to the adjusted target brightness corresponding to the primary color pixel and the gamma curve of the primary color pixel, the compensation gray scale corresponding to the defective pixel at the binding point gray scale of at least one primary color pixel around the defective pixel is determined. Optionally, according to the deviation, at least one primary color pixel with a different luminous color from the defective pixel around the defective pixel (as a pixel to be compensated, for example, a first sub-category of pixels to be compensated in the second category of pixels to be compensated) is subjected to brightness reduction processing to improve color deviation. And / or, based on the deviation, at least one primary color pixel around the defective pixel with the same luminous color as the defective pixel (as a pixel to be compensated, for example, a second subcategory of pixels to be compensated in the second category of pixels to be compensated) is brightness-enhanced, thereby visually enhancing the brightness of the defective pixel and improving the display effect.

[0304] In some embodiments, based on the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one primary color pixel surrounding the defective pixel, the compensation grayscale corresponding to the defective pixel under the binding point grayscale of at least one primary color pixel surrounding the defective pixel is determined, including: determining the brightness reduction ratio (or brightness reduction amount) of k1 primary color pixels surrounding the defective pixel that are different from the luminous color corresponding to the defective pixel based on the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit to the first target brightness; wherein k1 is an integer greater than or equal to 1; determining the compensation grayscale of k1 primary color pixels surrounding the defective pixel that are different from the luminous color corresponding to the defective pixel based on the gamma curve and the brightness reduction ratio (or brightness reduction amount) of the k1 primary color pixels surrounding the defective pixel that are different from the luminous color corresponding to the defective pixel.

[0305] Optionally, the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit to the first target brightness is determined as the brightness reduction ratio of k1 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel, wherein the k1 primary color sub-pixels and the defective pixel are used together as the pixels to be compensated corresponding to the defective pixel. Fig.19 and 20 As shown, the brightness reduction ratio is LD / Ln_tar, where LD is the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and Ln_tar is the first target brightness. Optionally, the compensation grayscales corresponding to the k1 primary color pixels are determined according to the gamma curves corresponding to the k1 primary color pixels of the luminous colors different from the defective pixel, the preset target brightness corresponding to the k1 primary color pixels, and the brightness reduction ratios corresponding to the k1 primary color pixels. After the brightness reduction ratio of the primary color pixels as the pixels to be compensated is determined, the final target brightness of the primary color pixels can be determined according to the brightness reduction ratio of the primary color pixels and the preset target brightness of the primary color pixels under the grayscale of the binding point. Optionally, among the k1 primary color pixels of the luminous colors different from the defective pixel, the final target brightness of each primary color pixel is equal to the product of the preset target brightness and (1-LD / Ln_tar). In this way, the compensation grayscales corresponding to the k1 primary color pixels of the luminous colors different from the defective pixel can be determined according to the final target brightness and the gamma curve of the primary color sub-pixel. In this embodiment, by reducing the brightness of k1 primary color pixels around the defective pixel whose luminous colors are different from those corresponding to the defective pixel according to the brightness reduction ratio, the brightness ratio of the primary color pixels around the defective pixel whose luminous colors are different from those of the defective pixel and the defective pixel can be ensured to remain unchanged, thereby reducing the impact of color deviation and improving the display effect.

[0306] Combination Figure 4Optionally, the k1 primary color pixels around the defective pixel include primary color pixels that form pixel group 1 with the defective pixel, wherein pixel group 1 includes at least two primary color pixels of different luminous colors; pixel group 1 is the minimum repeating unit of pixel arrangement in the display panel.

[0307] Optionally, k1 is 2. Optionally, the pixel group includes primary color pixels of three luminous colors, and the number of each primary color pixel is one. In this case, k1=2, and the color deviation can be improved by reducing the brightness of the primary color pixels in the pixel group that have a luminous color different from the defective pixel. For example, the luminous color corresponding to the defective pixel is one of red, green, and blue, and the luminous colors corresponding to the two primary color pixels around the defective pixel that have a different luminous color from the defective pixel are the other two of red, green, and blue.

[0308] In some other embodiments, based on the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one primary color pixel surrounding the defective pixel, the compensation grayscale corresponding to the defective pixel under the binding point grayscale is determined, including: determining the increased brightness value (or increased brightness ratio) of n1 primary color pixels with the same luminous color corresponding to the defective pixel around the defective pixel based on the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit; wherein n1 is an integer greater than or equal to 1; determining the compensation grayscale of n1 primary color pixels with the same luminous color corresponding to the defective pixel around the defective pixel based on the gamma curve of the n1 primary color pixels with the same luminous color corresponding to the defective pixel and the corresponding increased brightness value (or increased brightness ratio).

[0309] Optionally, the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit is determined as the sum of the raised brightness values ​​of the n1 primary color pixels with the same luminous color as the defective pixel around the defective pixel, and then the raised brightness values ​​of the n1 primary color pixels with the same luminous color as the defective pixel around the defective pixel are allocated according to the sum of the raised brightness values, so that the sum of the raised brightness values ​​of the n1 primary color pixels with the same luminous color as the defective pixel around the defective pixel is equal to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit. Optionally, the compensation grayscales corresponding to the n1 primary color pixels are determined according to the gamma curves corresponding to the n1 primary color pixels with different luminous colors from the defective pixel around the defective pixel, the preset target brightness corresponding to the n1 primary color pixels, and the raised brightness values ​​corresponding to the n1 primary color pixels. After the raised brightness value of the primary color pixel to be compensated is determined, the final target brightness of the primary color pixel can be determined according to the raised brightness value of the primary color pixel and the preset target brightness of the primary color pixel at the binding point grayscale. Optionally, among the n1 primary color pixels with the same luminous color as the defective pixel, the final target brightness of each primary color pixel is equal to the sum of the preset target brightness and the corresponding boosted brightness value. In this way, the compensation grayscale corresponding to the n1 primary color pixels with the same luminous color as the defective pixel can be determined based on the final target brightness and the gamma curve of the primary color sub-pixel. In this embodiment, by performing brightness boosting processing on the n1 primary color pixels with the same luminous color as the defective pixel according to the boosted brightness value, the brightness of the defective pixel can be visually enhanced by boosting the brightness of the primary color pixels with the same luminous color around the defective pixel, thereby improving the display effect.

[0310] In some embodiments, the raised brightness values ​​of n1 primary color pixels with the same luminous color as the defective pixel surrounding the defective pixel are equal to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit to n1, for example, (Ln_tar-LT) / n1=LD / n1. In other optional embodiments of the present invention, the raised brightness values ​​of n1 primary color pixels with the same luminous color as the defective pixel surrounding the defective pixel can also be specified according to other rules, which are not specifically limited in the embodiments of the present invention. Optionally, n1 is 1, 2, 3 or 4.

[0311] For example, k1 can be 1, 2, 3, 4, 5, 6, 7 or 8, etc. For example, n1 can be 1, 2, 3, 4, 5, 6, 7 or 8, etc.

[0312] Optionally, at least one primary color pixel (i.e., the second sub-category to-be-compensated pixel) around the defective pixel and having the same luminous color as the defective pixel is located on one side, two sides, three sides, or four sides of the defective pixel; the two sides include two adjacent sides or two opposite sides, or the four sides include two opposite sides along a first direction X and two opposite sides along a second direction Y, and the first direction X and the second direction Y intersect, for example, are perpendicular. Wherein, Figure 7 and Fig.10 The figure exemplifies the situation where at least one primary color pixel with the same luminous color as the defective pixel is located on the four sides of the defective pixel. In this way, the brightness of the primary color pixels around the defective pixel can be evenly improved, which is more conducive to improving the display effect.

[0313] In some embodiments, when the type of the defective pixel is j=i, that is, the number of black dot sub-pixels is equal to the total number of primary color sub-pixels in the defective pixel (corresponding to the third defect type in the above embodiment), in this case, at least one primary color pixel around the defective pixel is determined as the pixel to be compensated of the defective pixel. Accordingly, in the above embodiment, according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel, the compensation gray scale of the pixel to be compensated is determined, including: according to the first target brightness of the defective pixel and the gamma curve of at least one primary color pixel around the defective pixel, determining the compensation gray scale corresponding to the defective pixel under the binding point gray scale of at least one primary color pixel around the defective pixel.

[0314] Specifically, in the case where all the primary color sub-pixels in the defective pixel are black dot sub-pixels, for example, the primary color pixel includes two primary color sub-pixels, and the defective pixel includes two primary color sub-pixels, which can share the same pixel circuit, and both primary color sub-pixels are black dot sub-pixels, or, for example, the primary color pixel includes at least three primary color sub-pixels, which can share the same pixel circuit, and the defective pixel includes at least three primary color sub-pixels, for example, share the same pixel circuit, and at least three primary color sub-pixels are black dot sub-pixels, or, for example, the primary color pixel includes one primary color sub-pixel, and the defective pixel includes one primary color sub-pixel, and one primary color sub-pixel is a black dot sub-pixel, the defective pixel cannot emit light, and the brightness of the defective pixel needs to be indirectly compensated by brightness compensation of the primary color pixels around the defective pixel. In this embodiment, the brightness reduction ratio or brightness increase value of at least one primary color pixel (which can be used as a pixel to be compensated) around the defective pixel can be determined based on the first target brightness of the defective pixel, and then the target brightness of at least one primary color pixel around the defective pixel can be adjusted, and the compensation grayscale corresponding to the primary color pixel under the binding point grayscale of the defective pixel can be determined based on the adjusted target brightness of the primary color pixel and the gamma curve corresponding to the primary color pixel. Optionally, at least one primary color pixel (which can be used as a first sub-class pixel to be compensated) around the defective pixel with a different luminous color from the defective pixel is processed to reduce the brightness, thereby improving the color deviation. And / or, at least one primary color pixel (which can be used as a second sub-class pixel to be compensated) around the defective pixel with the same luminous color as the defective pixel is processed to increase the brightness, thereby visually improving the brightness of the defective pixel and improving the display effect.

[0315] Optionally, according to the first target brightness of the defective pixel and the gamma curve of at least one primary color pixel around the defective pixel, the compensation grayscale corresponding to at least one primary color pixel around the defective pixel under the binding point grayscale is determined, including: according to the first target brightness corresponding to the defective pixel, determining the brightness reduction ratio (or brightness reduction amount) of k2 primary color pixels (which can be used as the first subclass of compensated pixels) around the defective pixel and whose luminous colors are different from those corresponding to the defective pixel; according to the brightness reduction ratio (or brightness reduction amount) of the k2 primary color pixels around the defective pixel and whose luminous colors are different from those corresponding to the defective pixel and the gamma curve, determining the brightness reduction ratio (or brightness reduction amount) of the k2 primary color pixels around the defective pixel and whose luminous colors are different from those corresponding to the defective pixel The compensation grayscale of k2 primary color pixels of the luminous color corresponding to the defective pixel is determined according to the first target brightness corresponding to the defective pixel, and the brightness increase value (or brightness increase ratio) of n2 primary color pixels (which can be used as the second subclass to be compensated pixels) around the defective pixel with the same luminous color as the defective pixel is determined; the compensation grayscale of n2 primary color pixels of the same luminous color as the defective pixel around the defective pixel is determined according to the gamma curve and the corresponding brightness increase value (or brightness increase ratio) of the n2 primary color pixels of the same luminous color as the defective pixel around the defective pixel; wherein n2 is an integer greater than or equal to 1. k2 can be 1, 2, 3, 4, 5, 6, 7 or 8, etc. n2 can be 1, 2, 3, 4, 5, 6, 7 or 8, etc. For example, the brightness reduction ratio can be replaced by the brightness reduction amount. For example, the brightness increase value can be replaced by the brightness increase ratio.

[0316] Since the primary color sub-pixels in the defective pixel are all black dot sub-pixels, the defective pixel cannot emit light. In this embodiment, when determining the brightness reduction ratio of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel according to the first target brightness corresponding to the defective pixel, if the brightness ratio of different primary color pixels is kept unchanged, it is necessary to determine the brightness reduction ratio of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel as 100%, which will lead to a worse display effect. Therefore, in this embodiment, the brightness reduction ratio of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel can be adjusted multiple times through experiments to determine the brightness reduction ratio of the k2 primary color pixels when the display effect is better. Optionally, the brightness reduction ratio of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel is greater than 0 and less than 100%, for example, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, etc. After the brightness reduction ratio corresponding to the primary color pixel is determined, the final target brightness corresponding to the primary color pixel can be obtained, and then the corresponding compensation grayscale is determined according to the final target brightness corresponding to the primary color pixel and the gamma curve.

[0317] Optionally, the k2 primary color pixels around the defective pixel include primary color pixels that form a pixel group with the defective pixel, wherein the pixel group includes at least two primary color pixels of different luminous colors; the pixel group is the minimum repeating unit of pixel arrangement in the display panel;

[0318] Optional, k2 is 2;

[0319] Optionally, the brightness value of n2 primary color pixels around the defective pixel with the same luminous color as the defective pixel is equal to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit to n2, for example (Ln_tar-LT) / n2=LD / n2.

[0320] Optionally, n2 is 2, 3 or 4.

[0321] Optionally, among the primary color pixels of different luminous colors, the ratio of brightness reduction of the primary color pixels of different luminous colors is the same. In some embodiments, when the number of black dot sub-pixels in the defective pixel is equal to the total number of primary color sub-pixels in the defective pixel, the ratio of brightness reduction of k2 primary color pixels of different luminous colors around the defective pixel is greater than the ratio of brightness reduction of k1 primary color pixels of different luminous colors around the defective pixel when the number of black dot sub-pixels in the defective pixel is less than the total number of primary color sub-pixels in the defective pixel. In some embodiments, k2 is greater than k1.

[0322] In some embodiments, the first target brightness corresponding to the defective pixel is determined as the sum of the raised brightness values ​​of the n2 primary color pixels with the same luminous color as the defective pixel around the defective pixel, and then the raised brightness values ​​of the n2 primary color pixels with the same luminous color as the defective pixel around the defective pixel are allocated according to the sum of the raised brightness values, so that the sum of the raised brightness values ​​of the n2 primary color pixels with the same luminous color as the defective pixel around the defective pixel is equal to the first target brightness corresponding to the defective pixel. After the raised brightness value of the primary color pixel to be compensated is determined, the final target brightness of the primary color pixel can be determined according to the raised brightness value (or raised brightness ratio) of the primary color pixel and the pre-set target brightness of the primary color pixel at the binding point grayscale. In this way, the compensation grayscale corresponding to the n2 primary color pixels with the same luminous color as the defective pixel around the defective pixel can be determined according to the final target brightness and the gamma curve of the primary color sub-pixel.

[0323] Since the defective pixel itself cannot emit light, the brightness value of the primary color pixels with the same color as the defective pixel around the defective pixel needs to be larger. In some cases, when n2 is small, when the brightness value of the n2 primary color pixels with the same color as the defective pixel around the defective pixel reaches the limit, it is still impossible to meet the requirement that the sum of the brightness values ​​of the n2 primary color pixels with the same color as the defective pixel around the defective pixel is equal to the first target brightness corresponding to the defective pixel. In this case, the brightness of the n2 primary color pixels with the same color as the defective pixel around the defective pixel can be raised to the corresponding brightness limit. In some embodiments, when the number of black dot sub-pixels in the defective pixel is equal to the total number of primary color sub-pixels in the defective pixel, the brightness value of the n2 primary color pixels with the same color as the defective pixel around the defective pixel is greater than the brightness value of the n1 primary color pixels with the same color as the defective pixel around the defective pixel when the number of black dot sub-pixels in the defective pixel is less than the total number of primary color sub-pixels in the defective pixel. In some embodiments, n2 is greater than n1.

[0324] Optionally, the primary color pixels in the display panel include at least one normal pixel and at least one defective pixel. Fig.21 is a flowchart of another brightness compensation method for a display panel provided by an embodiment of the present invention, referring to Fig.21 Optionally, the brightness compensation method includes:

[0325] S310 , obtaining primary color image data of a display panel, where the primary color image data includes brightness data of primary color sub-pixels in a plurality of primary color pixels at a binding point grayscale.

[0326] Optionally, normal pixels of the display panel are determined according to the primary color image data.

[0327] The normal pixels are pixels other than the defective pixels, or the normal pixels are pixels other than the pixels to be compensated.

[0328] Optionally, when the brightness data corresponding to each primary color sub-pixel in the primary color pixel at the binding point grayscale are all within the normal brightness range corresponding to the binding point grayscale (for example, the brightness data is between a first brightness threshold and a second brightness threshold), the primary color pixel is determined to be a normal pixel.

[0329] S320 , determining a compensation grayscale of the normal pixel according to a second target brightness corresponding to the normal pixel and a gamma curve corresponding to m2 primary color sub-pixels in the normal pixel.

[0330] Wherein, m2 is an integer greater than or equal to 1. Optionally, the primary color pixel includes one primary color sub-pixel, and the gamma curve corresponding to the primary color sub-pixel in the normal pixel is obtained by fitting according to the actual brightness of each primary color sub-pixel at at least two binding point grayscales within a preset grayscale range; or, the primary color pixel includes at least two primary color sub-pixels, and m2 is an integer greater than 2; the gamma curves corresponding to the primary color sub-pixels at the same position in at least two normal pixels with the same luminous color are the same; the gamma curves corresponding to the primary color sub-pixels at the same position in at least two normal pixels with the same luminous color are obtained by fitting according to the actual brightness of the primary color sub-pixels at the same corresponding position in at least two normal pixels with the same luminous color at at least two binding point grayscales within the preset grayscale range. Fig. 22 is a schematic diagram of determining the compensation grayscale of a normal pixel according to the second target brightness corresponding to the normal pixel and the gamma curve corresponding to m2 primary color sub-pixels in the normal pixel. Fig. 22 The defective pixel includes two primary color sub-pixels, and both primary color sub-pixels are normal sub-pixels. Fig.12 The horizontal coordinate Gray represents the grayscale, the vertical coordinate Lv represents the brightness, the horizontal coordinate of point A2 is the compensation grayscale corresponding to the normal pixel under the grayscale of the binding point, and the vertical coordinate of point A2 is the target brightness Ln_tar0 corresponding to the normal pixel under the grayscale of the binding point. According to the formula corresponding to the gamma curve of the two normal sub-pixels and the second target brightness Ln_tar0 corresponding to the normal pixel, the compensation grayscale Gn_tar0 of the primary color sub-pixel in the normal pixel can be determined. m2 can be equal to the total number of primary color sub-pixels in the same normal pixel, that is, m2 can be equal to the total number of normal sub-pixels in the same normal pixel.

[0331] The two normal sub-pixels are respectively recorded as a first normal sub-pixel and a second normal sub-pixel. According to the gamma curve L5 corresponding to the first normal sub-pixel, it can be obtained that:

[0332] Ln_1_tar0=LGmax_5*(Gn1_tar0 / Gmax)^gamma5;

[0333] Among them, Ln_1_tar0 is the third sub-target brightness corresponding to the first normal sub-pixel under the second target brightness of the normal pixel; LGmax_5 is the actual brightness corresponding to the first normal sub-pixel at the maximum grayscale within the preset grayscale range; Gn1_tar0 represents the compensated grayscale corresponding to the first normal sub-pixel, Gmax represents the maximum grayscale within the preset grayscale range, and gamma5 represents the gamma coefficient of the gamma curve L5 corresponding to the first normal sub-pixel, which can be obtained according to curve fitting.

[0334] According to the gamma curve L6 corresponding to the second normal sub-pixel, it can be obtained:

[0335] Ln_2_tar0=LGmax_6*(Gn2_tar0 / Gmax)^gamma6;

[0336] Among them, Ln_2_tar0 is the fourth sub-target brightness corresponding to the second normal sub-pixel under the second target brightness; LGmax_6 is the actual brightness corresponding to the second normal sub-pixel at the maximum grayscale within the preset grayscale range; Gn2_tar0 represents the compensated grayscale corresponding to the second normal sub-pixel, and gamma6 represents the gamma coefficient of the gamma curve L6 corresponding to the second normal sub-pixel, which can be obtained according to curve fitting.

[0337] The second target brightness Ln_tar satisfies the following relationship with the third sub-target brightness and the fourth sub-target brightness:

[0338] Ln_tar0=Ln_1_tar0+Ln_2_tar0.

[0339] In some embodiments, each primary color sub-pixel in the primary color pixel is connected to the same pixel circuit. In this case, the compensation grayscales corresponding to each primary color sub-pixel are the same. Accordingly, the compensation grayscales corresponding to the first normal sub-pixel and the second normal sub-pixel are the same. Fig. 22 In the illustrated case, the compensation grayscale corresponding to the first normal sub-pixel and the second normal sub-pixel is recorded as Gn_tar0, that is, Gn1_tar0=Gn2_tar0=Gn_tar0. For example, LGmax=LGmax_5+LGmax_6.

[0340] in, Fig. 22 exemplarily shows the case where the gamma curves corresponding to the gamma curves of different normal sub-pixels in a normal pixel are the same or different, and accordingly, in the expressions of the gamma curves of different normal sub-pixels in a normal pixel, the gamma coefficients are different. In other embodiments, the gamma curves corresponding to the gamma curves of different normal sub-pixels in a normal pixel are the same, and accordingly, in the expressions of the gamma curves of different normal sub-pixels in a normal pixel, the gamma coefficients are the same.

[0341] In the case where the primary color pixel includes a primary color sub-pixel, the gamma curves corresponding to the primary color sub-pixels in the same normal pixel can be the same. When fitting the gamma curve, the primary color image data can be processed (filtering, defect point processing, such as replacing with an average value), and then the gamma curve corresponding to the primary color pixel in the normal pixel is fitted according to the brightness mean corresponding to each primary color sub-pixel at the binding point grayscale after processing. Through filtering, defect point processing, etc., it is equivalent to filtering out the brightness data of the defective pixel, and then calculating the compensation grayscale of the normal pixel, which can reduce the influence of the defective pixel on the brightness compensation effect of the normal pixel.

[0342] In the case where the primary color pixel includes at least two primary color sub-pixels, in the primary color pixels of the same luminous color, the gamma curves corresponding to the primary color sub-pixels corresponding to the same position in two normal pixels are the same. Figure 1 In the display panel shown, when the primary color pixel includes two primary color sub-pixels arranged vertically, in different primary color pixels, the primary color sub-pixels located at the upper part correspond to the same gamma curve; in different primary color pixels, the primary color sub-pixels located at the lower part correspond to the same gamma curve. For example, the gamma curves of the primary color sub-pixels R1 of different primary color pixels are the same. For example, the gamma curves of the primary color sub-pixels R2 of different primary color pixels are the same. The gamma curves corresponding to the primary color sub-pixels corresponding to the same position in two different normal pixels can be obtained by fitting according to the average of the actual brightness of the primary color sub-pixels at the same position in each normal pixel at at least two binding point grayscales within a preset grayscale range.

[0343] In some embodiments, at least two primary color sub-pixels in a normal pixel have the same gamma curve, and correspondingly, at least two primary color sub-pixels in a forward pixel have the same gamma coefficient.

[0344] In some embodiments, at the same binding point grayscale, the second target brightness corresponding to the normal pixel and the first target brightness corresponding to the defective pixel are the same; in this way, it can be ensured that after compensation, the defective pixel and the normal pixel reach the same brightness, so that the picture of the display panel is displayed uniformly, thereby improving the display effect.

[0345] For example, the second target brightness corresponding to the normal pixel is equal to the sum of the brightness corresponding to the gamma curve corresponding to m2 primary color sub-pixels in the normal pixel at the compensated grayscale of the normal pixel.

[0346] S330 : Determine the position and type of defective pixels of the display panel according to the primary color image data.

[0347] S340 . Determine a pixel to be compensated corresponding to the defective pixel according to the type of the defective pixel of the display panel and / or the first target brightness of the defective pixel of the display panel.

[0348] S350 , determining a compensation grayscale of the pixel to be compensated according to a first target brightness of the defective pixel of the display panel and a gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel.

[0349] Continue to refer Fig.21 In some embodiments, after determining the compensation grayscale corresponding to the pixel to be compensated corresponding to the defective pixel and the compensation grayscale corresponding to the normal pixel, the brightness compensation method further includes:

[0350] S360, determining a compensation offset corresponding to the defective pixel at the binding point grayscale of the pixel to be compensated according to the difference between the compensation grayscale corresponding to the pixel to be compensated and the binding point grayscale.

[0351] Optionally, the difference between the compensation grayscale and the binding point grayscale is used as the compensation offset corresponding to the pixel to be compensated under the binding point grayscale. The compensation grayscale corresponding to the non-binding point grayscale can be obtained by interpolation calculation based on the compensation grayscale corresponding to the binding point grayscale, and the compensation offset corresponding to the non-binding point grayscale is equal to the difference between the compensation grayscale corresponding to the non-binding point grayscale and the non-binding point grayscale.

[0352] For example, after determining the compensation grayscale corresponding to the pixel to be compensated corresponding to the defective pixel, the brightness compensation method also includes: determining the compensation offset corresponding to the pixel to be compensated corresponding to the defective pixel under the binding point grayscale according to the difference between the compensation grayscale corresponding to the pixel to be compensated and the binding point grayscale.

[0353] For example, after determining the compensation grayscale corresponding to the normal pixel, the brightness compensation method further includes: determining the compensation offset corresponding to the normal pixel at the binding point grayscale according to the difference between the compensation grayscale corresponding to the normal pixel and the binding point grayscale.

[0354] After S360 , S370 or S380 is executed.

[0355] S370, controlling the storage of compensation offsets corresponding to pixels to be compensated to obtain a first compensation table; controlling the compression storage of compensation offsets corresponding to normal pixels to obtain a second compensation table.

[0356] By storing the compensation offset corresponding to the pixel to be compensated independently from the compensation offset corresponding to the normal pixel in the first compensation table, the offset compensation corresponding to the pixel to be compensated will not be compressed, thereby avoiding distortion caused by compression and ensuring the compensation accuracy of the pixel to be compensated. By compressing and storing the compensation offset corresponding to the normal pixel, storage space can be saved. In addition, the difference in the compensation offsets corresponding to normal pixels with similar positions is usually small. Compressing and storing the compensation offsets corresponding to the normal pixels will not cause excessive compensation distortion. For example, the compensation offsets or compensation grayscales corresponding to multiple normal pixels are the same, or multiple normal pixels share the same compensation offset or compensation grayscale, so as to reduce the amount of data storage. The first compensation table may also store one or more of the compensation offsets and compensation grayscales corresponding to the pixel to be compensated. The second compensation table may also store one or more of the compensation offsets and compensation grayscales corresponding to the normal pixels.

[0357] S380, integrating the compensation offset corresponding to the normal pixel and the compensation offset corresponding to the pixel to be compensated by controlling, and storing the obtained compensation table.

[0358] In this way, storage space can be further saved.

[0359] Alternatively, the compensation offset corresponding to the normal pixel is controlled to be compressed, the compensation offset corresponding to the normal pixel and the compressed compensation offset corresponding to the pixel to be compensated are controlled to be integrated, and the obtained compensation table is stored.

[0360] Optionally, in S370 and S380, the compensation offset is stored correspondingly to the position information of the primary color pixel.

[0361] Optionally, when a non-defective primary color pixel is determined as a pixel to be compensated, the stored compensation offset is controlled to be the compensation offset corresponding to the pixel to be compensated. The non-defective primary color pixel is also a normal pixel determined as the pixel to be compensated.

[0362] Exemplarily, a primary color pixel is a normal pixel, and the primary color pixel is located around a defective pixel and is determined as a pixel to be compensated corresponding to the defective pixel. The compensation offset corresponding to the primary color pixel as a normal pixel is offset1, and the compensation offset corresponding to the primary color pixel as a pixel to be compensated is offset2. The stored offset compensation amount is offset2, and when brightness compensation is performed subsequently, brightness compensation is performed according to the compensation offset corresponding to the primary color pixel as a pixel to be compensated being offset2.

[0363] In some embodiments, the corresponding relationship between the position information of the primary color pixel and the compensated grayscale can also be directly stored. For example, the compensation offset corresponding to the pixel to be compensated is stored correspondingly with the position information of the pixel to be compensated. For example, the compensation offset corresponding to the normal pixel is stored correspondingly with the position information of the normal pixel.

[0364] Optionally, after S380 or S390, the brightness compensation method further includes: obtaining position information of primary color pixels; determining a compensation grayscale corresponding to the primary color pixels or a compensation offset corresponding to the compensation grayscale according to the position information of the primary color pixels; and performing brightness compensation on the primary color pixels in the display panel according to the compensation grayscale or the compensation offset.

[0365] Specifically, after the position information of the primary color pixel is determined, the compensation grayscale or compensation offset corresponding to the primary color pixel can be determined according to the corresponding compensation table, and then the brightness compensation of the primary color pixel in the display panel is performed according to the compensation grayscale or compensation offset to improve the display effect. Exemplarily, the compensation offset corresponding to the defective pixel is determined according to the first compensation table, and the compensation offset of the normal pixel is determined according to the second compensation table; or, the compensation offset of the defective pixel and the compensation offset of the normal pixel are determined respectively according to the fused compensation table.

[0366] Optionally, after S370 or S380, the brightness compensation method further includes: performing brightness compensation on the pixels to be compensated in the display panel according to position information of the pixels to be compensated and a compensation grayscale corresponding to the pixels to be compensated or a compensation offset corresponding to the compensation grayscale.

[0367] Specifically, the compensation grayscale or compensation offset of the pixel to be compensated can be determined according to the position information of the pixel to be compensated and the compensation table storing the compensation grayscale or compensation offset of the pixel to be compensated, so as to perform brightness compensation on the pixel to be compensated. For example, the brightness compensation method also includes:

[0368] Receive input original image data; the original image data includes original display data of each primary color pixel in the display panel; the multiple primary color pixels include normal pixels and pixels to be compensated.

[0369] The original display data corresponding to the pixel to be compensated is compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table to realize brightness compensation for the display panel; the first compensation table at least includes the compensation offset corresponding to the pixel to be compensated; the compensation offset is the difference between the compensation grayscale and the binding point grayscale.

[0370] Optionally, the position information of the pixel to be compensated is stored corresponding to the compensation offset in the first compensation table. After the position information of the pixel to be compensated is determined, the compensation offset corresponding to the position information of the pixel to be compensated can be determined in the first compensation table, and brightness compensation can be performed on the pixel to be compensated according to the compensation offset.

[0371] For example, before, after or simultaneously with compensating the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, the method further includes:

[0372] The original display data corresponding to the normal pixels are compensated according to the compensation offsets corresponding to the normal pixels in the second compensation table; the second compensation table includes the compensation offsets corresponding to at least some of the normal pixels.

[0373] The position information of the normal pixel in the second compensation table is stored corresponding to the compensation offset. After the position information of the normal pixel is determined, the compensation offset corresponding to the position information of the normal pixel can be determined in the second compensation table, and the brightness compensation of the normal pixel is performed according to the compensation offset.

[0374] Alternatively, the first compensation table includes compensation offsets corresponding to pixels to be compensated and compensation offsets corresponding to normal pixels.

[0375] Compensating the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, including:

[0376] The original display data corresponding to the pixels to be compensated and the normal pixels are compensated according to the compensation offsets corresponding to the primary color pixels in the first compensation table.

[0377] Optionally, the position information of the pixel to be compensated in the first compensation table is stored corresponding to the compensation offset, and the position information of the normal pixel is also stored corresponding to the compensation offset. After the position information of the pixel to be compensated or the position information of the normal pixel is determined, the compensation offset corresponding to the position information of the pixel to be compensated can be determined in the first compensation table, and brightness compensation is performed on the pixel to be compensated according to the compensation offset; or the compensation offset corresponding to the position information of the normal pixel is determined in the first compensation table, and brightness compensation is performed on the normal pixel according to the compensation offset.

[0378] Fig.23 is a cross-sectional view of a display panel provided by an embodiment of the present invention, Fig.23 Can correspond Figure 1 Cut along BB', optionally, the primary color sub-pixel includes a light emitting device 101, and the light emitting device 101 includes a first electrode 1011, a light emitting layer 1012, and a second electrode 1013 stacked in layers. The light emitting device 101 includes a first electrode 1011, a light emitting layer 1012, and a second electrode 1013 stacked in sequence along the thickness direction of the display panel.

[0379] For example, a primary color pixel includes at least two primary color sub-pixels. In the same primary color pixel, different primary color sub-pixels share the same first electrode 1011. Under the tied point grayscale, different primary color sub-pixels in the primary color pixel correspond to the same compensation grayscale.

[0380] Optionally, the primary color pixel includes at least two primary color sub-pixels corresponding to the same luminous color, and the primary color pixel also includes a pixel circuit 20, and the first electrodes 1011 of at least two primary color sub-pixels in the primary color pixel are connected to the same pixel circuit 20. In this way, the number of pixel circuits 20 in the display panel can be reduced, reducing the difficulty of wiring. Different primary color pixels are connected to different pixel circuits. The luminous areas (corresponding to the pixel openings) of at least two primary color sub-pixels in the same primary color pixel are arranged at intervals.

[0381] Optionally, the display panel further includes an isolation structure 50, the isolation structure 50 encloses a plurality of isolation openings, at least a portion of the primary color sub-pixels are located in the isolation openings, and at least a portion of the light emitting devices are located in the isolation openings.

[0382] Optionally, the second electrode 1013 overlaps the isolation structure 50 , and the second electrodes 1013 of primary color sub-pixels of the same luminous color are electrically connected through the isolation structure 50 .

[0383] The embodiment of the present invention also provides a brightness compensation method for a display panel. The display panel includes at least one primary color pixel of a light-emitting color, at least one primary color pixel is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; the brightness compensation method includes:

[0384] According to the first target brightness of the defective pixel of the display panel, the pixel to be compensated corresponding to the defective pixel is determined. The first target brightness is the target brightness corresponding to the defective pixel under the bound grayscale. The first target brightness of the defective pixel may be the sum of the brightness of all primary color sub-pixels in the defective pixel, or the average brightness. In some embodiments, the pixel to be compensated corresponding to the defective pixel can be determined according to the brightness range to which the first target brightness of the defective pixel of the display panel belongs. Optionally, at least two brightness ranges are preset, and when the first target brightness belongs to different brightness ranges, the type of pixel to be compensated or the compensation method corresponding to the defective pixel is determined to be different. The types of pixels to be compensated corresponding to at least two different first target brightnesses are different.

[0385] The pixels to be compensated include defective pixels, and / or at least one primary color pixel around the defective pixels. The first type of pixels to be compensated include defective pixels. The second type of pixels to be compensated include at least one primary color pixel around the defective pixels. The first subtype of pixels to be compensated in the second type of pixels to be compensated includes at least one primary color pixel around the defective pixels that emits a different color than the defective pixels. The second subtype of pixels to be compensated in the second type of pixels to be compensated includes at least one primary color pixel around the defective pixels that emits the same color as the defective pixels.

[0386] Specifically, when the display panel is displaying, there will be a maximum brightness limit, which is used as a preset brightness limit. The maximum brightness of the primary color pixel will not exceed the preset brightness limit. The preset brightness limits corresponding to primary color pixels of different luminous colors may be the same or different. When determining the pixel to be compensated for the defective pixel, it can be determined based on the first target brightness of the defective pixel and the size relationship of the preset brightness limit. For example, when the first target brightness is less than or equal to the preset brightness limit, the defective pixel itself can be determined as the pixel to be compensated corresponding to the defective pixel; when the first target brightness is greater than the preset brightness limit, the defective pixel itself and at least one primary color pixel around the defective pixel can be determined as the pixel to be compensated. For example, based on the size relationship between the first target brightness of the defective pixel of the display panel and the preset brightness limit, the pixel to be compensated is determined, that is, the type or type of the pixel to be compensated is determined.

[0387] In other optional embodiments of the present invention, at least three brightness ranges can be set, for example, 0 to a preset brightness limit is divided into at least two brightness ranges, and a situation greater than a preset brightness limit is also divided into at least two brightness ranges, and a method for determining the pixel to be compensated corresponding to the defective pixel is set according to whether the first target brightness belongs to different brightness ranges.

[0388] In this embodiment, the pixel to be compensated corresponding to the defective pixel is determined according to the first target brightness of the defective pixel of the display panel, and the pixel to be compensated corresponding to the defective pixel can be determined according to the different sizes of the first target brightness of the defective pixel, so that after the brightness compensation of the pixel to be compensated is performed, the visual brightness of the defective pixel can be closer to the first target brightness, thereby improving the display effect of the display panel.

[0389] This embodiment can be combined with some or all of the features of the above embodiments, which will not be described in detail here.

[0390] The embodiment of the present invention also provides a brightness compensation method for a display panel. The display panel includes at least one primary color pixel of a light-emitting color, at least one primary color pixel is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; the brightness compensation method includes:

[0391] The compensation gray scale of the pixel to be compensated is determined according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel.

[0392] The compensation grayscale of the pixel to be compensated includes the compensation grayscale corresponding to at least one primary color sub-pixel in the pixel to be compensated. In some embodiments, when the sum of the brightness corresponding to at least one primary color sub-pixel on the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel is equal to the first target brightness, the grayscale corresponding to the primary color sub-pixel is determined as the compensation grayscale corresponding to the primary color sub-pixel.

[0393] In some embodiments, when the average brightness of at least one primary color sub-pixel on the gamma curve corresponding to at least one primary color sub-pixel in the pixel to be compensated corresponding to the defective pixel is equal to the first target brightness, the grayscale corresponding to the primary color sub-pixel is determined as the compensation grayscale corresponding to the primary color sub-pixel. The pixel to be compensated includes the defective pixel and / or at least one primary color pixel around the defective pixel. For example, based on the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one non-black dot sub-pixel in the defective pixel, the compensation grayscale of at least one non-black dot sub-pixel in the defective pixel as the sub-pixel to be compensated is determined. For example, based on the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one primary color sub-pixel in at least one primary color pixel around the defective pixel, the compensation grayscale of at least one primary color pixel around the defective pixel as the pixel to be compensated is determined.

[0394] In this way, the pixels to be compensated corresponding to the defective pixels in the display panel can be accurately compensated using the matching brightness compensation data, which is beneficial to improving the display effect of the display panel and improving the user experience.

[0395] This embodiment can be combined with some or all of the features of the above embodiments, which will not be described in detail here.

[0396] The embodiment of the present invention also provides a brightness compensation method for a display panel. The display panel includes a primary color pixel of at least one luminous color, and the primary color pixel includes at least two primary color sub-pixels; the brightness compensation method includes:

[0397] For each primary color pixel in the at least one primary color pixel, a compensated gray scale of the primary color pixel is determined according to a target brightness of the primary color pixel and a gamma curve corresponding to at least two primary color sub-pixels in the primary color pixel.

[0398] Specifically, for defective pixels and normal pixels (i.e., primary color pixels without defects), the brightness compensation method of this embodiment can be used to determine the corresponding compensation grayscale. The compensation grayscale of the primary color pixel includes the compensation grayscale of at least one primary color sub-pixel in the primary color pixel. Optionally, according to the target brightness of the primary color pixel under the tie point grayscale, the grayscale at which the sum of the brightness of the primary color sub-pixels or the brightness mean is equal to the target brightness of the primary color pixel on the gamma curve corresponding to at least two primary color sub-pixels in the primary color pixel is determined as the compensation grayscale corresponding to the primary color sub-pixel. At least one primary color pixel may include a defective pixel and / or a normal pixel. For example, according to the first target brightness of the defective pixel and the gamma curve corresponding to at least two primary color sub-pixels (i.e., at least two non-black dot sub-pixels) in the defective pixel, the compensation grayscale of the pixel to be compensated or the defective pixel corresponding to the defective pixel is determined. For example, according to the second target brightness of the normal pixel and the gamma curve corresponding to at least two primary color sub-pixels in the normal pixel, the compensation grayscale of the normal pixel is determined. All primary color sub-pixels in the normal pixel are normal sub-pixels.

[0399] In this way, when brightness compensation is subsequently performed on the primary color sub-pixels according to the compensated grayscale, the primary color pixels can reach the target brightness, thereby improving the display effect of the display panel.

[0400] This embodiment can be combined with some or all of the features of the above embodiments, which will not be described in detail here.

[0401] The embodiment of the present invention further provides a brightness compensation device for a display panel, which can be used to execute the brightness compensation method in the above embodiment. Fig.24 is a schematic diagram of a brightness compensation device for a display panel provided by an embodiment of the present invention, with reference to Fig.24 The brightness compensation device includes: an input module 410 and a first compensation module 420; the input module 410 is used to receive input original image data, the original image data includes original display data of each primary color pixel in the display panel; at least one primary color pixel is a defective pixel, and the plurality of primary color pixels include normal pixels and pixels to be compensated corresponding to the defective pixels;

[0402] The first compensation module 420 is used to compensate the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table; wherein the first compensation table at least includes the compensation offset corresponding to the pixel to be compensated.

[0403] The original display data of the primary color pixel may be the original display grayscale corresponding to the primary color pixel.

[0404] In this embodiment, the first compensation table can be determined by the brightness compensation method of the display panel of any of the above embodiments of the present invention, and the first compensation table can be stored in the storage module 430 of the display device after being determined. After the display panel leaves the factory, the compensation offset corresponding to the pixel to be compensated can be determined according to the first compensation table, and the original display data corresponding to the pixel to be compensated can be compensated, thereby realizing the brightness compensation of the display panel. The pixel to be compensated includes a defective pixel and / or at least one primary color pixel around the defective pixel.

[0405] The brightness compensation device of this embodiment can compensate the defective pixels in the display panel and / or at least one primary color pixel around the defective pixels using matching brightness compensation data by performing brightness compensation on the pixels to be compensated according to the first compensation table, which is beneficial to improving the display effect of the display panel and improving the user experience.

[0406] For example, the first compensation module 420 is connected to the input module 410 .

[0407] Fig.25 is a schematic diagram of the structure of another brightness compensation device for a display panel provided by an embodiment of the present invention, with reference to Fig.25 Optionally, the brightness compensation device further includes a storage module 430 for storing position information corresponding to the pixels to be compensated.

[0408] Optionally, the first compensation table is stored in the storage module 430. In the first compensation table, the position information of the pixel to be compensated and the compensation offset corresponding to the pixel to be compensated are stored correspondingly. The first compensation module 420 is used to compensate the original display data corresponding to the pixel to be compensated according to the position information corresponding to the pixel to be compensated and the compensation offset corresponding to the pixel to be compensated in the first compensation table.

[0409] Specifically, the first compensation module 420 can determine the compensation offset corresponding to the position information of the pixel to be compensated in the first compensation table according to the position information of the pixel to be compensated, and use the compensation offset to compensate the original display data of the pixel to be compensated. Exemplarily, the corresponding compensation offset can be added to the original display data to obtain the compensated display data.

[0410] Fig.26is a schematic structural diagram of another brightness compensation device for a display panel provided by an embodiment of the present invention, Fig. 27 is a schematic diagram of the structure of another brightness compensation device for a display panel provided by an embodiment of the present invention, with reference to Fig.26 and Fig. 27 Optionally, the brightness compensation device further includes: a second compensation module 440, which is used to compensate the original display data corresponding to the normal pixel according to the compensation offset corresponding to the normal pixel in the second compensation table. For example, the second compensation module 440 is connected to the input module 410.

[0411] Optionally, the second compensation table may also be stored in the storage module 430, in which the position information of the normal pixel and the corresponding compensation offset are stored correspondingly. The second compensation module 440 may determine the compensation offset corresponding to the normal pixel in the second compensation table according to the position information of the normal pixel, and use the compensation offset corresponding to the normal pixel to compensate the original display data corresponding to the normal pixel.

[0412] The connection between the second compensation module 440 and the input module 410 may be a direct connection or an indirect connection. Fig.26 As shown, in some embodiments, the second compensation module 440 is connected between the input module 410 and the first compensation module 420, and the first compensation module 420 is also used to compensate the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table when the non-defective primary color pixel (which may be the second normal pixel) is the pixel to be compensated. Optionally, the first compensation module 420 is also used to restore the display data compensated according to the compensation offset corresponding to the normal pixel in the second compensation table to the original display data when the normal pixel is the pixel to be compensated, and compensate the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table.

[0413] Specifically, when a normal pixel is determined as a pixel to be compensated, there will be a compensation offset corresponding to the normal pixel in both the first compensation table and the second compensation table. In this case, in order to avoid inaccurate brightness compensation caused by secondary compensation of the normal pixel, in this embodiment, when the normal pixel is a pixel to be compensated, the first compensation module 420 will restore the display data compensated according to the compensation offset corresponding to the normal pixel in the second compensation table to the original display data, and then compensate the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, that is, to ensure that the normal pixel determined as the pixel to be compensated is brightness compensated according to the compensation offset in the first compensation table, to ensure a good brightness compensation effect. Alternatively, the first compensation module 420 obtains a compensation grayscale according to the compensation offset corresponding to the pixel to be compensated in the first compensation table and the corresponding binding point grayscale, and replaces the original display grayscale of the position corresponding to the pixel to be compensated in the original display data, or replaces the display grayscale of the position corresponding to the pixel to be compensated in the data obtained after the second compensation module.

[0414] like Fig. 27 As shown, in some other embodiments, the second compensation module 440 is indirectly connected to the input module 410, and the first compensation module 420 is also indirectly connected to the input module 410. The brightness compensation device also includes a judgment module 450, and the judgment module 450 is connected to the input module 410, the first compensation module 420, and the second compensation module 440 respectively. The judgment module 450 is used to output the original display data and the corresponding position information to the second compensation module 440 when judging that the primary color pixel is a normal pixel according to the position information of the primary color pixel, so that the second compensation module 440 performs brightness compensation on the normal pixel according to the second compensation table; and when judging that the primary color pixel is a pixel to be compensated according to the position information of the primary color pixel, the original display data and the corresponding position information are output to the first compensation module 420, so that the first compensation module 420 performs brightness compensation on the pixel to be compensated according to the first compensation table.

[0415] Optionally, when a primary color pixel corresponding to a position information is determined to be a normal pixel and a pixel to be compensated at the same time, the judgment module 450 outputs the original display data and the corresponding position information to the first compensation module 420, so that the first compensation module 420 performs brightness compensation on the pixel to be compensated according to the first compensation table. In this way, through the judgment of the primary color pixel information by the judgment module 450, brightness compensation is performed on normal pixels and pixels to be compensated in different branches, thereby avoiding insufficient compensation caused by multiple compensations of the primary color pixels or poor display caused by multiple compensations, and / or, which is conducive to improving data processing efficiency. In some embodiments, the input module 410 includes an input unit and a processing unit, the input unit is used to receive input original display data, the processing unit is connected to the output end of the input unit, and is used to process the original display data to correspond the original display data to the position information of the primary color pixels; the output end of the processing unit can be connected to at least one of the judgment module 450, the first compensation module 420 and the second compensation module 440. When the processing unit is connected to the judgment module 450, the judgment module 450 can receive the position information of the primary color pixels and the original display data corresponding to the primary color pixels from the processing unit.

[0416] Continue to refer Fig.16 and Fig. 27 Optionally, the brightness compensation device further includes a decompression module 460, which is connected to the second compensation module 440 and is used to decompress the second compensation table to obtain the compensation offset corresponding to the normal pixel. Optionally, the decompression module 460 is connected between the storage module 430 and the second compensation module 440.

[0417] Fig.28 is a schematic diagram of the structure of another brightness compensation device for a display panel provided by an embodiment of the present invention, with reference to Fig.28 Optionally, the brightness compensation device also includes: a second compensation module 440, the second compensation module 440 is connected to the input module 410, and the second compensation module 440 is used to compensate the original display data corresponding to the normal pixel according to the compensation offset corresponding to the normal pixel in the second compensation table; the input module 410 includes a first input module 411 and a second input module 412, and the first input module 411 and the second input module 412 are respectively used to receive input original image data; the first compensation module 420 is connected to the first input module 411, and the second compensation module 440 is connected to the second input module 412; wherein the first input module 411 and the first compensation module 420 are integrated, and the second input module 412 and the second compensation module 440 are integrated.

[0418] In this embodiment, the compensation device for the pixel to be compensated includes the first input module 411 and the first compensation module 420) and the compensation device for the normal pixel (including the second input module 412 and the second compensation module 440) are separately arranged to avoid mutual interference between the two, which is conducive to further improving the compensation effect. The first compensation module 420 and the second compensation module 440 can correspond to the same chip, or to different chips.

[0419] In another optional embodiment of the present invention, the first compensation table also includes compensation offsets corresponding to normal pixels; the first compensation module 420 is used to compensate the original display data corresponding to the pixels to be compensated and the normal pixels according to the compensation offsets corresponding to each primary color pixel in the first compensation table.

[0420] In this case, the first compensation table incorporates the compensation offsets corresponding to the normal pixels and the pixels to be compensated, which can save storage space on the one hand and simplify the structure of the brightness compensation device on the other hand.

[0421] This embodiment can be combined with some or all of the features of the above embodiments, which will not be described in detail here.

[0422] An embodiment of the present invention further provides a display device, Fig.29 is a schematic diagram of a display device provided by an embodiment of the present invention, with reference to Fig.29 Optionally, the display device 2 includes a display panel 200 that adopts the brightness compensation method of the display panel of any of the above embodiments of the present invention, or includes a brightness compensation device of any of the above embodiments of the present invention, and has the beneficial effects of the display panel or brightness compensation device of any of the above embodiments of the present invention. In this embodiment, the display device can be a mobile phone, or any electronic product with a display function, including but not limited to the following categories: display panels in products such as televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, and touch interactive terminals, and the embodiment of the present invention does not specifically limit this.

[0423] Fig.30 is a cross-sectional view of another display panel provided by an embodiment of the present invention, Fig.30 Can correspond Figure 1Cut along CC', optionally, the primary color pixel also includes a pixel circuit, the primary color sub-pixel includes a light-emitting device 101, the pixel circuit of the primary color pixel is connected to the light-emitting device 101, the pixel circuit includes a driving branch 21, the first end of the driving branch 21 is connected to the first signal line VDD, the second end of the driving branch 21 is electrically connected to the first electrode (e.g., anode) of the light-emitting device, the second electrode (e.g., cathode) of the light-emitting device is connected to the second voltage input terminal, and the driving branch 21 is used to output a driving current to the light-emitting device. Optionally, the driving current is positively correlated with the voltage on the first signal line VDD.

[0424] Optionally, the second electrodes of light emitting devices of different luminous colors are connected to different second signal lines VSS through the second voltage input terminals. In this way, the same or different voltages can be provided to light emitting devices of different luminous colors through different second signal lines VSS, which is beneficial to improving the display effect.

[0425] Combination Fig.23 and Fig.30 Optionally, the first electrodes 1011 of at least two light-emitting devices 101 in the same primary color pixel are connected to each other. Exemplarily, the first electrodes 1011 of multiple light-emitting devices 101 in the same primary color pixel are connected to each other. In some embodiments, the first electrodes 1011 of all light-emitting devices 101 in the same primary color pixel are connected to each other, so that all light-emitting devices 101 in the same primary color pixel can be driven by the same pixel circuit, which reduces the number of pixel circuits in the display panel and helps to simplify the wiring difficulty.

[0426] Optionally, the display panel further includes an isolation structure 50 , which encloses a plurality of isolation openings. The second electrode 1013 of each light-emitting device 101 is located in a corresponding isolation opening and overlaps with the corresponding isolation structure 50 .

[0427] Optionally, the light emitting device 101 may include a red light emitting device, a green light emitting device and a blue light emitting device. The light emitting device 101 includes a first electrode 1011, a light emitting layer 1012 and a second electrode 1013 which are stacked. The isolation structure 50 has a certain thickness so that the light emitting layers 1012 of adjacent sub-pixels are separated at the isolation structure 50 to avoid cross-color when the adjacent sub-pixels emit different colors.

[0428] Since the overlap between the second electrode 1013 and the isolation structure 50 during light emission may be poor, in the implementation of the present invention, when the primary color pixel includes at least two primary color sub-pixels, that is, when the primary color pixel includes at least two light-emitting devices 101 of the same light-emitting color, when the second electrode 1013 of one light-emitting device 101 and the isolation structure 50 are poorly overlapped, the second electrodes 1013 of other light-emitting devices 101 can also be overlapped normally, thereby improving the problem of the display effect being affected by the poor overlap between the second electrode 1013 of the light-emitting device 101 and the isolation structure 50.

[0429] Optionally, the second electrodes 1013 of the light-emitting devices 101 with the same light-emitting color are electrically connected via the isolation structure 50 .

[0430] Specifically, the isolation structure 50 includes a conductive material, or the isolation structure 50 is a conductive structure. For example, the second electrodes 1013 of sub-pixels of the same luminous color are electrically connected through the isolation structure 50, so that the second electrodes 1013 of sub-pixels of the same luminous color have the same potential.

[0431] Optionally, the second electrodes 1013 of the light-emitting devices 101 of different light-emitting colors are insulated from each other, and the isolation structures 50 connecting the second electrodes 1013 of the light-emitting devices 101 of different light-emitting colors are insulated from each other.

[0432] In this way, it is possible to provide voltages to the second electrodes 1013 of light-emitting devices of different luminous colors respectively through different second voltage input terminals, thereby providing a structural basis for the second electrodes 1013 of light-emitting devices of different luminous colors to have different voltages.

[0433] Optionally, the light-emitting device also includes a light-emitting layer 1012, which is located between the first electrode 1011 and the second electrode 1013, and the light-emitting layers 1012 of light-emitting devices of different light-emitting colors are separated by the isolation structure 50; in this way, the light-emitting devices of different light-emitting colors will not have lateral leakage, further improving the display effect of the monochrome picture.

[0434] Optionally, the display panel further includes a driving circuit layer 60 and a pixel definition layer 70, wherein the pixel definition layer 70 is located between the driving circuit layer 60 and the isolation structure 50, and the pixel definition layer 70 includes a plurality of pixel openings; the positive projection of the isolation structure 50 on the pixel definition layer 70 is located between adjacent pixel openings. The first electrode may be located on a side of the pixel definition layer 70 close to the driving circuit layer 60, and the pixel opening exposes at least a portion of the first electrode 1011. The pixel circuit may be located in the driving circuit layer 60. The driving circuit layer 60 is located between the substrate 61 and the pixel definition layer 70.

[0435] Fig.31 This is an enlarged view of an isolation structure. Fig.30 and Fig.31 Optionally, the isolation structure 50 includes a first support portion 51 and a partition portion 52, the first support portion 51 is located between the partition portion 52 and the substrate 61, for example, the first support portion 51 is located between the partition portion 52 and the pixel definition layer 70; the orthographic projection of the partition portion 52 on the pixel definition layer 70 covers the orthographic projection of the first support portion 51 on the pixel definition layer 70; the second electrode 1013 of the light-emitting device overlaps with the first support portion 51, and the first support portion 51 is conductive. The orthographic projection of the side of the first support portion 51 away from the substrate 61 on the substrate 61 is located within the orthographic projection of the partition portion 52 on the substrate 61, for example, the orthographic projection area of ​​the side of the first support portion 51 away from the substrate 61 on the substrate 61 is smaller than the orthographic projection area of ​​the partition portion 52 on the substrate 61. The cross section of the isolation structure 50 perpendicular to the substrate 61 may be T-shaped.

[0436] The material of the first support portion 51 may be a conductive material, and the second electrodes 1013 of adjacent sub-pixels are all connected to the first support portion 51, so that the second electrodes 1013 of adjacent sub-pixels are electrically connected through the first support portion 51. The material of the first support portion 51 may be aluminum. The material of the partition portion 52 may include a conductive material and / or an insulating material, for example, the material of the partition portion 52 includes titanium, silicon nitride, or silicon oxide.

[0437] Optionally, in the pixel opening connection direction z1 on both sides of the isolation structure 50 , at the position where the first supporting portion 51 and the partitioning portion 52 meet, the size p1 of the first supporting portion 51 is smaller than the size p2 of the partitioning portion 52 .

[0438] Specifically, in the pixel opening connection direction z1 on both sides of the isolation structure 50, at the position where the first support portion 51 and the partition portion 52 are connected, the size p1 of the first support portion 51 is smaller than the size p2 of the partition portion 52, so that an undercut structure is formed on the side of the isolation structure 50, and then when the light-emitting layer 1012 of the light-emitting device in the display panel is evaporated, the light-emitting layer 1012 of the adjacent light-emitting device can be cut off at the position of the isolation structure 50. In addition, the second electrode 1013 of the light-emitting device can also be formed by an evaporation process. By controlling different evaporation angles when evaporating the second electrode 1013 and the light-emitting layer 1012, the second electrode 1013 can be connected to the first support portion 51 of the isolation structure 50, and then the second electrodes 1013 of each light-emitting device in the display panel can be connected to each other through the isolation structure 50.

[0439] Optionally, the first voltage input terminals of sub-pixels of different luminous colors are connected to the same first signal line VDD. In this way, the same voltage can be provided to the first voltage input terminals of sub-pixels of different luminous colors through the same first signal line VDD, simplifying the structure of the display panel. In this case, it is necessary to ensure that the second voltage input terminals of sub-pixels of different luminous colors are connected to the same second signal line VSS.

[0440] Fig.32 This is an enlarged view of another isolation structure. Fig.32 Optionally, the isolation structure further includes a second support portion 53, which is located on a side of the first support portion 51 away from the partition portion 52. The orthographic projection of the first support portion 51 on the substrate 61 is located within the orthographic projection of the second support portion 53 on the substrate 61, for example, the orthographic projection area of ​​the first support portion 51 on the substrate 61 is smaller than the orthographic projection area of ​​the second support portion 53 on the substrate 61. The cross section of the isolation structure 50 perpendicular to the substrate 61 may be an I-shape.

[0441] Optionally, the material of the second support portion 53 is a conductive material, and the second electrode of the light-emitting device can also overlap with the second support portion 53 to increase the overlapping area between the second electrode and the isolation structure and improve the electrical connection stability between the second electrode and the isolation structure.

[0442] Optionally, in the pixel opening connection direction z1 on both sides of the isolation structure, at the position where the first support portion 51 and the second support portion 53 meet, the size p4 of the second support portion 53 is greater than the size p3 of the first support portion 51. This is conducive to increasing the overlap area between the second electrode and the second support portion 53, and further improving the electrical connection stability between the second electrode and the isolation structure.

[0443] Optionally, in the pixel opening connection direction z1 on both sides of the isolation structure, the size p4 of the second supporting portion 53 is smaller than the size p2 of the partition portion 51 .

[0444] In some optional embodiments of the present invention, at least one primary color pixel of a luminescent color includes primary color pixels of at least two luminescent colors, the number of primary color sub-pixels in the primary color pixels of at least two luminescent colors is different, and / or the number of primary color sub-pixels in the primary color pixels of at least two luminescent colors is the same; and / or the number of primary color sub-pixels in primary color pixels of the same luminescent color is the same.

[0445] Fig.33 This is another schematic diagram of a pixel arrangement structure. For example, primary color pixels of at least one luminous color include a first primary color pixel, a second primary color pixel, and a third primary color pixel of different luminous colors.

[0446] The first primary color pixel, the second primary color pixel and the third primary color pixel are sequentially arranged in a circular pattern along the first direction x ( Figure 7 and Fig.10 Alternatively, the first primary color pixel, the second primary color pixel, the third primary color pixel, and the second primary color pixel are sequentially arranged in a circular pattern along the first direction x ( Fig.33 situation shown).

[0447] For example, the primary color pixel includes at least two primary color sub-pixels arranged along the second direction y; the first direction x and the second direction y intersect, for example, are perpendicular.

[0448] 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.

[0449] 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 brightness compensation method for a display panel, characterized in that: The display panel includes at least one primary color pixel of a light emitting color, at least one of the primary color pixels is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; The brightness compensation method comprises: According to the type of defective pixels of the display panel, pixels to be compensated corresponding to the defective pixels are determined.

2. The brightness compensation method of a display panel according to claim 1, characterized in that: The primary color pixel includes a primary color sub-pixel; the primary color sub-pixel includes a pixel circuit and a light-emitting device, and the pixel circuit is used to drive the light-emitting device; Alternatively, the primary color pixel includes at least two primary color sub-pixels; each of the primary color sub-pixels includes a pixel circuit and a light-emitting device, and the pixel circuit is used to drive the light-emitting device; At least two primary color sub-pixels share the same pixel circuit; Preferably, before determining the pixel to be compensated corresponding to the defective pixel according to the type of the defective pixel of the display panel, the brightness compensation method further includes: Acquire primary color image data of the display panel, wherein the primary color image data includes brightness data of the primary color sub-pixels in a plurality of the primary color pixels at a binding point gray scale; Determining the position and type of defective pixels of the display panel according to the primary color image data; Preferably, determining the position and type of defective pixels of the display panel according to the primary color image data of the display panel includes: In the case where the primary color pixel is determined to be the defective pixel according to the brightness data of at least one of the primary color sub-pixels of the primary color pixel at the binding point grayscale, the type of the defective pixel is determined according to the brightness data corresponding to each of the primary color sub-pixels in the defective pixel, and the position of the defective pixel is determined according to the position information corresponding to the defective pixel in the primary color image data; Preferably, when the brightness data of at least one of the primary color sub-pixels of the primary color pixel at the binding point grayscale is greater than the corresponding first brightness threshold, and / or the brightness data of at least one of the primary color sub-pixels of the primary color pixel at the binding point grayscale is less than the corresponding second brightness threshold, the primary color pixel is determined to be a defective pixel; wherein the first brightness thresholds corresponding to different binding point grayscales are different, and the second brightness thresholds corresponding to different binding point grayscales are different; Preferably, the first brightness threshold is greater than or equal to the average value, median value or mode of brightness data of the primary color sub-pixels in the plurality of primary color pixels at the binding point grayscale; Preferably, the second brightness threshold is less than or equal to the average value, median value or mode of brightness data of the primary color sub-pixels in the plurality of primary color pixels at the binding point grayscale; Preferably, the second brightness threshold is smaller than the first brightness threshold; Preferably, when the brightness data of the primary color sub-pixel at the binding point gray level is greater than the corresponding first brightness threshold, the primary color sub-pixel is a bright sub-pixel; when the brightness data of the primary color sub-pixel at the binding point gray level is less than the corresponding second brightness threshold and greater than the corresponding third brightness threshold, the primary color sub-pixel is a gray sub-pixel; when the brightness data of the primary color sub-pixel at the binding point gray level is less than or equal to the corresponding third brightness threshold, the primary color sub-pixel is a black sub-pixel; the third brightness threshold is less than the second brightness threshold; Preferably, the primary color image data is a monochromatic picture; Preferably, the color of the primary color image data is one of red, green or blue; Preferably, the color of the primary color image data is the same as the emission color corresponding to the defective pixel; Preferably, after obtaining the primary color image data of the display panel, it further includes: Determining the positions of the normal pixels of the display panel according to the primary color image data; Preferably, the brightness data of the primary color sub-pixels of the normal pixels at the binding point gray level is greater than or equal to the corresponding second brightness threshold and less than or equal to the corresponding first brightness threshold.

3. The brightness compensation method of a display panel according to claim 1, characterized in that: The pixel to be compensated includes a defective pixel, and / or at least one of the primary color pixels around the defective pixel; The defective pixel includes i primary color sub-pixels, including j black sub-pixels, where i is an integer greater than or equal to 1, and j is an integer greater than or equal to 0 and less than or equal to i; Determining the pixel to be compensated corresponding to the defective pixel according to the type of the defective pixel of the display panel includes: When the type of the defective pixel is j < i, determining at least the defective pixel and / or at least one of the primary color pixels around the defective pixel as the pixel to be compensated according to the first target brightness of the defective pixel; When the type of the defective pixel is j = i, determining at least one of the primary color pixels around the defective pixel as the pixel to be compensated; Preferably, when the type of the defective pixel is j < i, determining the pixel to be compensated according to the magnitude relationship between the first target brightness of the defective pixel and a preset brightness limit value; Preferably, when the type of the defective pixel is j < i and the first target brightness of the defective pixel is less than or equal to the preset brightness limit value, determining the defective pixel as the pixel to be compensated; Preferably, when the type of the defective pixel is j < i and the first target brightness of the defective pixel is greater than the preset brightness limit value, determining the defective pixel and at least one of the primary color pixels around the defective pixel as the pixel to be compensated; Preferably, when the type of the defective pixel is j < i, the defective pixel includes a non-black sub-pixel, and the preset brightness limit value is greater than the brightness value corresponding to the maximum gray level of the non-black sub-pixel of the defective pixel within a preset gray level range; Alternatively, the defective pixel includes at least two non-black dot sub-pixels, and the preset brightness limit is greater than the sum of brightness values ​​corresponding to the maximum grayscale of the non-black dot sub-pixels in the defective pixel within a preset grayscale range; Preferably, the first target brightness is the target brightness of the defective pixel at the corresponding binding point grayscale, the number of the binding point grayscales is at least two, and the binding point grayscales are within the preset grayscale range; Preferably, the binding point grayscale includes the maximum grayscale within a preset grayscale range; Preferably, at least two types of the defective pixels have different numbers of black dot sub-pixels, and / or at least two types of the defective pixels have different numbers of non-black dot sub-pixels. Preferably, the number of the black dot sub-pixels in the defective pixel is equal to 0, 1 or 2; Preferably, the defective pixel includes at least one defective sub-pixel, and the defective sub-pixel includes a black dot sub-pixel, a gray dot sub-pixel or a bright dot sub-pixel; under the same data voltage, the brightness of the black dot sub-pixel, the gray dot sub-pixel and the bright dot sub-pixel increases in sequence; Preferably, when the brightness data of the primary color sub-pixel is less than or equal to a third brightness threshold, the primary color sub-pixel is determined to be a black dot sub-pixel; Preferably, the third brightness threshold is equal to 0; Preferably, the non-black dot sub-pixel in the defective pixel includes a normal sub-pixel, a gray dot sub-pixel or a bright dot sub-pixel; under the same data voltage, the brightness of the gray dot sub-pixel, the normal sub-pixel and the bright dot sub-pixel increases in sequence; Preferably, the number of the gray dot sub-pixels in at least two types of the defective pixels is different, and / or the number of the bright dot sub-pixels in at least two types of the defective pixels is different, and / or the number of the normal sub-pixels in at least two types of the defective pixels is different, and / or the number of the black dot sub-pixels in at least two types of the defective pixels is different; Preferably, at least one of the primary color pixels around the defective pixel determined as the pixel to be compensated includes one or more of a normal sub-pixel, a black dot sub-pixel, a gray dot sub-pixel and a bright dot sub-pixel; Preferably, after determining the pixel to be compensated corresponding to the defective pixel according to the type of the defective pixel of the display panel, the brightness compensation method further comprises: The compensation grayscale of the pixel to be compensated is determined according to a first target brightness of the defective pixel of the display panel and a gamma curve corresponding to at least one of the primary color sub-pixels in the pixel to be compensated corresponding to the defective pixel.

4. The brightness compensation method of a display panel according to claim 3, characterized in that: The pixel to be compensated includes the defective pixel; the defective pixel includes m1 non-black dot sub-pixels, where m1 is an integer greater than or equal to 1; The step of determining the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one of the primary color sub-pixels in the pixel to be compensated corresponding to the defective pixel, comprises: Determine a compensation grayscale of the non-black dot sub-pixel in the defective pixel according to a first target brightness of the defective pixel and a gamma curve corresponding to m1 non-black dot sub-pixels in the defective pixel; Preferably, when the first target brightness of the defective pixel at the binding point grayscale is less than or equal to the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is determined according to the first target brightness of the defective pixel and according to the first gamma curve of m1 non-black dot sub-pixels; wherein the first gamma curve is obtained by fitting according to the brightness data of the non-black dot sub-pixel at at least two of the binding point grayscales within the preset grayscale range; and the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is less than or equal to the maximum grayscale within the preset grayscale range; Preferably, when the first target brightness of the defective pixel at the binding point grayscale is greater than the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit, the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is determined according to the first target brightness of the defective pixel and the second gamma curve of m1 non-black dot sub-pixels; wherein the second gamma curve is obtained by fitting the preset brightness limit value corresponding to the preset grayscale limit value according to the brightness data of the primary color sub-pixel at at least two binding point grayscales within the preset grayscale range; the compensation grayscale corresponding to the non-black dot sub-pixel at the binding point grayscale is greater than the maximum grayscale within the preset grayscale range, and is less than or equal to the preset grayscale limit; Preferably, the second gamma curve includes part or all of the first gamma curve; Preferably, the defective pixel includes one non-black dot sub-pixel, and the actual brightness of the defective pixel is equal to the brightness of the non-black dot sub-pixel in the defective pixel; or, the defective pixel includes at least two non-black dot sub-pixels, and the actual brightness of the defective pixel is equal to the sum of the brightnesses of the non-black dot sub-pixels in the defective pixel; Preferably, the preset grayscale limit is greater than the maximum grayscale within the preset grayscale range; Preferably, the defective pixel in the pixels to be compensated includes m1 non-black dot sub-pixels; Preferably, m1 is 1 or 2 or an integer greater than 2; When the first target brightness of the defective pixel at the binding point grayscale is less than or equal to the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, the first target brightness of the defective pixel is equal to the sum of the brightness of the first gamma curve of m1 non-black dot sub-pixels in the defective pixel at the compensation grayscale; When the first target brightness of the defective pixel at the binding point grayscale is greater than the actual brightness corresponding to the defective pixel at the maximum grayscale within the preset grayscale range, and is less than or equal to the preset brightness limit, the first target brightness of the defective pixel is equal to the sum of the brightnesses of the second gamma curve of the m1 non-black dot sub-pixels in the defective pixel at the compensation grayscale.

5. The brightness compensation method of a display panel according to claim 3, characterized in that: The pixel to be compensated includes the defective pixel; the defective pixel includes m1 non-black dot sub-pixels, where m1 is an integer greater than or equal to 1; The step of determining the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one of the primary color sub-pixels in the pixel to be compensated corresponding to the defective pixel, comprises: In the case where the first target brightness of the defective pixel at the binding point grayscale is greater than the preset brightness limit, the preset grayscale limit corresponding to the preset brightness limit is determined as the compensation grayscale corresponding to the non-black dot sub-pixel according to the first target brightness of the defective pixel and the second gamma curve of m1 non-black dot sub-pixels; wherein the second gamma curve is obtained by fitting the preset brightness limit corresponding to the preset grayscale limit according to the brightness data of the primary color sub-pixel at at least two binding point grayscales within the preset grayscale range; Preferably, the pixels to be compensated further include at least one primary color pixel around the defective pixel; After determining the preset grayscale limit value corresponding to the preset brightness limit value as the compensation grayscale corresponding to the non-black dot sub-pixel, the method further includes: According to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one of the primary color pixels around the defective pixel, determine the compensation gray scale corresponding to the defective pixel under the binding point gray scale of at least one of the primary color pixels around the defective pixel.

6. The brightness compensation method of a display panel according to claim 5, characterized in that: The determining, according to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one primary color pixel around the defective pixel, a compensation grayscale corresponding to the defective pixel at the binding point grayscale of at least one primary color pixel around the defective pixel, comprises: Determine the brightness reduction ratio of k1 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel according to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit value to the first target brightness; wherein k1 is an integer greater than or equal to 1; Determine, according to the gamma curve of k1 primary color pixels around the defective pixel and having a different luminous color from that corresponding to the defective pixel and the brightness reduction ratio, a compensation grayscale of k1 primary color pixels around the defective pixel and having a different luminous color from that corresponding to the defective pixel; Preferably, the k1 primary color pixels around the defective pixel include the primary color pixels forming a pixel group with the defective pixel, wherein the pixel group includes at least two primary color pixels of different luminous colors; the pixel group is the minimum repeating unit of pixel arrangement in the display panel; Preferably, k1 is 2.

7. The brightness compensation method of a display panel according to claim 5, characterized in that: The determining, according to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit, and the gamma curve of at least one primary color pixel around the defective pixel, a compensation grayscale corresponding to the defective pixel at the binding point grayscale of at least one primary color pixel around the defective pixel, comprises: Determine the brightness values ​​of n1 primary color pixels around the defective pixel and having the same luminous color as the defective pixel according to the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit; wherein n1 is an integer greater than or equal to 1; Determine the compensation grayscale of n1 primary color pixels around the defective pixel with the same luminous color as the defective pixel according to the gamma curves and corresponding brightness values ​​of the primary color pixels around the defective pixel with the same luminous color as the defective pixel; Preferably, the brightness values ​​of n1 primary color pixels around the defective pixel and having the same luminous color as the defective pixel are equal to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit to n1. Preferably, n1 is 2, 3 or 4; Preferably, at least one primary color pixel around the defective pixel having the same luminous color as that of the defective pixel is located on one side, two sides, three sides or four sides of the defective pixel; The two sides include two adjacent sides or two opposite sides, or the four sides include two opposite sides along a first direction and two opposite sides along a second direction, and the first direction and the second direction intersect.

8. The brightness compensation method of a display panel according to claim 3, characterized in that: When the type of the defective pixel is j=i, The step of determining the compensation grayscale of the pixel to be compensated according to the first target brightness of the defective pixel of the display panel and the gamma curve corresponding to at least one of the primary color sub-pixels in the pixel to be compensated corresponding to the defective pixel, comprises: Determine, according to the first target brightness of the defective pixel and the gamma curve of at least one of the primary color pixels around the defective pixel, a compensation grayscale corresponding to the defective pixel at the binding point grayscale corresponding to at least one of the primary color pixels around the defective pixel; Preferably, according to the first target brightness of the defective pixel and the gamma curve of at least one of the primary color pixels around the defective pixel, determining the compensation grayscale corresponding to at least one of the primary color pixels around the defective pixel at the binding point grayscale includes: Determine, according to the first target brightness corresponding to the defective pixel, a reduction ratio of the brightness of k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel; determine, according to the reduction ratio of the brightness of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel and the gamma curve, a compensation grayscale of the k2 primary color pixels around the defective pixel that are different from the luminous color corresponding to the defective pixel; wherein k2 is an integer greater than or equal to 1; and / or, determining, according to the first target brightness corresponding to the defective pixel, the raised brightness values ​​of the n2 primary color pixels around the defective pixel and having the same luminous color as the defective pixel; determining, according to the gamma curves and corresponding raised brightness values ​​of the n2 primary color pixels around the defective pixel and having the same luminous color as the defective pixel, the compensated grayscales of the n2 primary color pixels around the defective pixel and having the same luminous color as the defective pixel; wherein n2 is an integer greater than or equal to 1; Preferably, the k2 primary color pixels around the defective pixel include the primary color pixels forming a pixel group with the defective pixel, wherein the pixel group includes at least two primary color pixels of different luminous colors; the pixel group is the minimum repeating unit of pixel arrangement in the display panel; Preferably, k2 is 2; Preferably, the brightness values ​​of n2 primary color pixels around the defective pixel and having the same luminous color as the defective pixel are equal to the ratio of the difference between the first target brightness corresponding to the defective pixel and the preset brightness limit value to n2. Preferably, n2 is 2, 3 or 4.

9. The brightness compensation method of a display panel according to claim 3, characterized in that: The plurality of primary color pixels include at least one normal pixel and at least one defective pixel, Determine the compensation grayscale of the normal pixel according to the second target brightness corresponding to the normal pixel and the gamma curve corresponding to the m2 primary color sub-pixels in the normal pixel; wherein m2 is an integer greater than or equal to 1; Preferably, the primary color pixel includes one primary color sub-pixel, and the gamma curve corresponding to the primary color sub-pixel in the normal pixel is obtained by fitting according to the actual brightness of each primary color sub-pixel at at least two binding point grayscales within the preset grayscale range; Alternatively, the primary color pixel includes at least two primary color sub-pixels, and m2 is an integer of 2 or greater than 2; Preferably, the gamma curves corresponding to the primary color sub-pixels corresponding to the same position in at least two normal pixels with the same luminous color are the same; the gamma curves corresponding to the primary color sub-pixels corresponding to the same position in at least two normal pixels with the same luminous color are obtained by fitting according to the actual brightness of the primary color sub-pixels at the same corresponding position in at least two normal pixels with the same luminous color at at least two binding point grayscales within the preset grayscale range; Preferably, the gamma curves corresponding to at least two primary color sub-pixels in the same normal pixel are the same; Preferably, the second target brightness corresponding to the normal pixel is equal to the sum of the brightnesses corresponding to the gamma curves of the m2 primary color sub-pixels in the normal pixel at the compensated grayscale of the normal pixel; Preferably, at the same binding point grayscale, the second target brightness corresponding to the normal pixel and the first target brightness corresponding to the defective pixel are the same.

10. The brightness compensation method of a display panel according to claim 9, characterized in that: After determining the compensation grayscale corresponding to the pixel to be compensated corresponding to the defective pixel, the method further includes: Determine, according to the difference between the compensation grayscale corresponding to the pixel to be compensated and the grayscale corresponding to the binding point, a compensation offset corresponding to the defective pixel at the binding point grayscale of the pixel to be compensated; After determining the compensation grayscale corresponding to the normal pixel, the method further includes: Determine the compensation offset corresponding to the normal pixel at the binding point grayscale according to the difference between the compensation grayscale corresponding to the normal pixel and the binding point grayscale; Controlling to store the compensation offset corresponding to the pixel to be compensated to obtain a first compensation table; controlling to compress and store the compensation offset corresponding to the normal pixel to obtain a second compensation table; or controlling to integrate the compensation offset corresponding to the normal pixel and the compensation offset corresponding to the pixel to be compensated, and storing the obtained compensation table; or controlling to compress the compensation offset corresponding to the normal pixel, controlling to integrate the compensation offset corresponding to the normal pixel and the compressed compensation offset corresponding to the pixel to be compensated, and storing the obtained compensation table; Preferably, when the non-defective primary color pixel is determined as the pixel to be compensated, the stored compensation offset is controlled to be the compensation offset corresponding to the pixel to be compensated; Preferably, the compensation offset corresponding to the normal pixel is stored corresponding to the position information of the normal pixel; Preferably, the compensation offset corresponding to the pixel to be compensated is stored correspondingly to the position information of the pixel to be compensated; Preferably, the brightness compensation method further includes: According to the position information of the pixel to be compensated, and the compensation grayscale corresponding to the pixel to be compensated or the compensation offset corresponding to the compensation grayscale, Brightness compensation is performed on the pixels to be compensated in the display panel.

11. The brightness compensation method of a display panel according to claim 3, characterized in that: The brightness compensation method further comprises: Receive input raw image data; the raw image data includes raw display data of each primary color pixel in the display panel; the plurality of primary color pixels include normal pixels and pixels to be compensated; The original display data corresponding to the pixel to be compensated is compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, so as to realize brightness compensation for the display panel; the first compensation table at least includes the compensation offset corresponding to the pixel to be compensated; the compensation offset is the difference between the compensation grayscale and the binding point grayscale; Preferably, before, after or simultaneously with compensating the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table, the method further comprises: Compensating the original display data corresponding to the normal pixel according to the compensation offset corresponding to the normal pixel in the second compensation table; the second compensation table includes at least part of the compensation offset corresponding to the normal pixel; Alternatively, the first compensation table includes the compensation offset corresponding to the pixel to be compensated and the compensation offset corresponding to the normal pixel, The compensating the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table includes: The original display data corresponding to the pixel to be compensated and the normal pixel are compensated according to the compensation offset corresponding to each of the primary color pixels in the first compensation table.

12. The brightness compensation method of a display panel according to claim 3, characterized in that: The primary color sub-pixel comprises a light-emitting device, wherein the light-emitting device comprises a first electrode, a light-emitting layer, and a second electrode which are stacked, the primary color pixel comprises at least two primary color sub-pixels corresponding to the same light-emitting color, and the light-emitting regions of the multiple primary color sub-pixels in the same primary color pixel are arranged at intervals; In the primary color pixel, the first electrode of different primary color sub-pixels is shared, and under the same binding point grayscale, the compensation grayscales corresponding to different primary color sub-pixels in the primary color pixel are the same; Preferably, the primary color pixel further includes a pixel circuit, and the first electrodes of at least two primary color sub-pixels in the primary color pixel are connected to the same pixel circuit; different primary color pixels are connected to different pixel circuits; Preferably, the display panel further comprises an isolation structure, wherein the isolation structure encloses a plurality of isolation openings, and at least a portion of the primary color sub-pixels are located in the isolation openings.

13. A brightness compensation method for a display panel, characterized in that: The display panel includes at least one primary color pixel of a light emitting color, at least one of the primary color pixels is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; The brightness compensation method comprises: According to a first target brightness of a defective pixel of the display panel, a pixel to be compensated corresponding to the defective pixel is determined.

14. A brightness compensation method for a display panel, characterized in that: The display panel includes at least one primary color pixel of a light emitting color, at least one of the primary color pixels is a defective pixel, and the primary color pixel includes at least one primary color sub-pixel; The brightness compensation method comprises: The compensation grayscale of the pixel to be compensated is determined according to a first target brightness of the defective pixel of the display panel and a gamma curve corresponding to at least one of the primary color sub-pixels in the pixel to be compensated corresponding to the defective pixel.

15. A brightness compensation method for a display panel, characterized in that: The display panel includes primary color pixels of at least one luminous color, and the primary color pixels include at least two primary color sub-pixels; The brightness compensation method comprises: For each of the at least one primary color pixel, a compensated grayscale of the primary color pixel is determined according to a target brightness of the primary color pixel and a gamma curve corresponding to at least two primary color sub-pixels in the primary color pixel.

16. A brightness compensation device for a display panel, characterized in that: include: An input module and a first compensation module; The input module is used to receive input original image data, wherein the original image data includes original display data of each primary color pixel in the display panel; At least one primary color pixel is a defective pixel, and the plurality of primary color pixels include normal pixels and pixels to be compensated corresponding to the defective pixel; The first compensation module is used to compensate the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table; wherein the first compensation table at least includes the compensation offset corresponding to the pixel to be compensated.

17. The brightness compensation device according to claim 16, characterized in that: It also includes a storage module for storing position information corresponding to the pixel to be compensated; The first compensation module is used to compensate the original display data corresponding to the pixel to be compensated according to the position information corresponding to the pixel to be compensated and the compensation offset corresponding to the pixel to be compensated in the first compensation table; Preferably, the first compensation module is connected to the input module; Preferably, the brightness compensation device further includes: a second compensation module, A second compensation module is connected to the input module, and the second compensation module is used to compensate the original display data corresponding to the normal pixel according to the compensation offset corresponding to the normal pixel in the second compensation table; Preferably, the second compensation module is connected between the input module and the first compensation module, and the first compensation module is further used for compensating the original display data corresponding to the pixel to be compensated according to the compensation offset corresponding to the pixel to be compensated in the first compensation table when the non-defective primary color pixel is the pixel to be compensated; Alternatively, the brightness compensation device further includes a judgment module, and the judgment module is connected to the input module, the first compensation module, and the second compensation module respectively. The judging module is used to output the original display data and the corresponding position information to the second compensation module when judging that the primary color pixel is a normal pixel according to the position information of the primary color pixel, and output the original display data and the corresponding position information to the first compensation module when judging that the primary color pixel is a pixel to be compensated according to the position information of the primary color pixel; Preferably, the brightness compensation device further comprises a decompression module, which is connected to the second compensation module and is used for decompressing the second compensation table to obtain the compensation offset corresponding to the normal pixel.

18. The brightness compensation device according to claim 16, characterized in that: Also includes: The second compensation module, A second compensation module is connected to the input module, and the second compensation module is used to compensate the original display data corresponding to the normal pixel according to the compensation offset corresponding to the normal pixel in the second compensation table; The input module comprises a first input module and a second input module, wherein the first input module and the second input module are respectively used to receive input original image data; The first compensation module is connected to the first input module, and the second compensation module is connected to the second input module; The first input module and the first compensation module are integrated, and the second input module and the second compensation module are integrated.

19. The brightness compensation device according to claim 16, characterized in that: The first compensation table also includes a compensation offset corresponding to the normal pixel; The first compensation module is used to compensate the original display data corresponding to the pixel to be compensated and the normal pixel according to the compensation offset corresponding to each of the primary color pixels in the first compensation table.

20. A display device, characterized in that: A display panel comprising the brightness compensation method for a display panel according to any one of claims 1-15, or a brightness compensation device according to any one of claims 16-19.

21. The display device according to claim 20, characterized in that: The primary color pixel further includes a pixel circuit, the primary color sub-pixel includes a light-emitting device, the pixel circuit of the primary color pixel is connected to the light-emitting device, the pixel circuit includes a driving branch, a first end of the driving branch is connected to a first signal line, a second end of the driving branch is electrically connected to a first electrode of the light-emitting device, a second electrode of the light-emitting device is connected to the second voltage input end, and the driving branch is used to output a driving current to the light-emitting device; Preferably, the first electrodes of the plurality of light-emitting devices in the same primary color pixel are connected to each other; Preferably, the display panel further comprises an isolation structure, wherein the isolation structure encloses a plurality of isolation openings, and the second electrode of each of the light-emitting devices is located in the corresponding isolation opening and overlaps with the corresponding isolation structure; Preferably, the second electrodes of the light-emitting devices of the same light-emitting color are electrically connected via the isolation structure; Preferably, the second electrodes of the light-emitting devices of different luminous colors are insulated from each other, and the isolation structures connecting the second electrodes of the light-emitting devices of different luminous colors are insulated from each other; Preferably, the light-emitting device further comprises a light-emitting layer, the light-emitting layer is located between the first electrode and the second electrode, and the light-emitting layers of light-emitting devices with different light-emitting colors are separated by the isolation structure; Preferably, the display panel further comprises a driving circuit layer and a pixel definition layer, wherein the pixel definition layer is located between the driving circuit layer and the isolation structure, and the pixel definition layer comprises a plurality of pixel openings; and the orthographic projection of the isolation structure on the pixel definition layer is located between adjacent pixel openings; Preferably, the isolation structure comprises a first supporting portion and a partitioning portion, wherein the first supporting portion is located between the partitioning portion and the pixel definition layer; the second electrode of the light-emitting device overlaps the first supporting portion, and the first supporting portion is conductive; Preferably, in the direction of the pixel opening connection lines on both sides of the isolation structure, at the position where the first supporting portion and the partitioning portion are connected, the size of the first supporting portion is smaller than the size of the partitioning portion; Preferably, the first voltage input terminals of the sub-pixels of different luminous colors are connected to the same first signal line; Preferably, the isolation structure further comprises a second supporting portion, and the second supporting portion is located on a side of the first supporting portion away from the partition portion; Preferably, in the direction of the pixel opening connection on both sides of the isolation structure, at the position where the first supporting portion and the second supporting portion are connected, the size of the second supporting portion is larger than the size of the first supporting portion; Preferably, in the direction of the pixel opening connection on both sides of the isolation structure, the size of the second supporting portion is smaller than the size of the partition portion.

22. The display device according to claim 20, characterized in that The primary color pixels of at least one luminous color include primary color pixels of at least two luminous colors, the numbers of primary color sub-pixels in the primary color pixels of the at least two luminous colors are different, and / or the numbers of primary color sub-pixels in the primary color pixels of the at least two luminous colors are the same; and / or the numbers of primary color sub-pixels in primary color pixels of the same luminous color are the same; And / or, the primary color pixels of the at least one luminous color include a first primary color pixel, a second primary color pixel and a third primary color pixel having different luminous colors; The first primary color pixel, the second primary color pixel and the third primary color pixel are sequentially arranged in a circular pattern along a first direction; or, the first primary color pixel, the second primary color pixel, the third primary color pixel and the second primary color pixel are sequentially arranged in a circular pattern along the first direction; And / or, the primary color pixel includes at least two primary color sub-pixels arranged along the second direction; Preferably, the first direction and the second direction intersect.

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