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

Abstract

The invention discloses a compensation method and device for a display panel and a computer readable storage medium, and the method comprises the steps: a display region of the display panel comprises at least one sub-display region, the sub-display region comprises a plurality of pixel units, each pixel unit comprises at least one sub-pixel, and each sub-pixel comprises at least one sub-pixel; the compensation method comprises the following steps: acquiring measurement color coordinates corresponding to the sub-display areas; for each pixel unit in the display area, determining a correction coefficient corresponding to the pixel unit according to the measurement color coordinate corresponding to the sub-display area and the measurement brightness corresponding to the pixel unit; and performing compensation processing on the display brightness of the sub-pixels in the pixel units according to the correction coefficients corresponding to the pixel units. Through the method, the display effect of the display panel can be improved.

Description

Technical Field

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

[0002] MicroLight Emitting Diode is a new generation of display technology. Compared with the existing OLED (Organic Light-Emitting Diode) or LCD (Liquid Crystal Display) technology, it has the advantages of high resolution, high brightness, ultra-power saving, fast response speed, high light output efficiency and long life. It is widely used in commercial display, conference, monitoring and television and other display fields. Whether it is LCD, OLED or M-LED, there will inevitably be problems with brightness uniformity during the production process, which will lead to uneven brightness (mura). In particular, as the size of display panels becomes larger and larger, the problem of mura becomes more and more normal, so demura (eliminating uneven brightness) technology came into being.

[0003] However, due to the limitation of the measuring accuracy of the instrument, the existing brightness compensation still has the problem of insufficient accuracy, which ultimately leads to poor display effect of the display panel. Summary of the invention

[0004] The present application provides a compensation method, a compensation device and a computer-readable storage medium for a display panel, and the method can improve the display effect of the display panel.

[0005] A second aspect of an embodiment of the present application provides a compensation method for a display panel, wherein a display area of ​​the display panel includes at least one sub-display area, the sub-display area includes a plurality of pixel units, and the pixel unit includes at least one sub-pixel. The compensation method includes: obtaining measured color coordinates corresponding to the sub-display area; for each pixel unit in the display area, determining a correction coefficient corresponding to the pixel unit according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit; and compensating for the display brightness of the sub-pixels in the pixel unit according to the correction coefficients corresponding to the pixel units.

[0006] Furthermore, the step of obtaining the measured color coordinates corresponding to the sub-display area includes: obtaining the measured color coordinates of each sub-pixel in the sub-display area; and calculating the average value of the measured color coordinates of each sub-pixel to obtain the measured color coordinates corresponding to the sub-display area.

[0007] Further, the step of obtaining the measured color coordinates of each sub-pixel in the sub-display area includes: in response to the number of sub-pixels in the sub-display area exceeding the number threshold, using a color analyzer to obtain the measured color coordinates of each sub-pixel in the sub-display area; otherwise, using a CCD camera to obtain the measured color coordinates of each sub-pixel in the sub-display area. Further, the step of determining the correction coefficient corresponding to the pixel unit according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit includes: determining the original stimulus value matrix according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit; and obtaining the correction coefficient matrix corresponding to the pixel unit according to the original stimulus value matrix and a preset target stimulus value matrix.

[0008] The pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel, the sub-display area corresponds to three color coordinates, and the three measured color coordinates include a first measured color coordinate, a second measured color coordinate and a third measured color coordinate; the step of determining the original stimulus value matrix according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit includes: determining the original stimulus value matrix according to the following formula:

[0009]

[0010] Among them, x rO is the abscissa of the first measured color coordinate, y rO is the ordinate of the first measured color coordinate, x gO is the abscissa of the second measured color coordinate, y gO is the ordinate of the second measured color coordinate, x bO is the abscissa of the third measured color coordinate, y bO is the ordinate of the third measured color coordinate, Y rO is the measured brightness value of the first sub-pixel, Y gO is the measured brightness value of the second sub-pixel and Y bO is the measured brightness value of the third sub-pixel.

[0011] Furthermore, the step of obtaining the correction coefficient matrix corresponding to the pixel unit according to the original stimulus value matrix and the preset target stimulus value matrix includes: obtaining the correction coefficient matrix Mc corresponding to the pixel unit according to the following formula;

[0012]

[0013] Among them, M T is the target stimulus value matrix, is the inverse matrix of the original stimulus value matrix.

[0014] Further, the step of compensating the brightness of the sub-pixel in the pixel unit according to the correction coefficient corresponding to the pixel unit includes: compensating the display brightness of the sub-pixel in the pixel unit according to the following formula:

[0015] L′ T =M C ×L O ;

[0016] Among them, M C is the correction coefficient corresponding to the pixel unit, L O is a matrix composed of the display brightness of each sub-pixel in the pixel unit, L′ T It is a matrix composed of actual compensated brightness obtained after compensation of each sub-pixel in the pixel unit.

[0017] A second aspect of an embodiment of the present application provides a compensation device, including the compensation method of the display panel described in any of the above embodiments, wherein the display area of ​​the display panel includes at least one sub-display area, the sub-display area includes multiple pixel units, and the pixel unit includes at least one sub-pixel, and the compensation device includes: an acquisition module, used to acquire the measured color coordinates corresponding to the sub-display area; a determination module, connected to the acquisition module, used to determine, for each pixel unit in the display area, a correction coefficient corresponding to the pixel unit according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit; a compensation module, connected to the determination module, used to compensate the display brightness of the sub-pixels in the pixel unit according to the correction coefficients corresponding to the pixel units.

[0018] A third aspect of an embodiment of the present application provides a compensation device, which includes a processor, a memory, and a communication circuit. The processor is coupled to the memory and the communication circuit, respectively. Program data is stored in the memory. The processor implements the steps in the above method by executing the program data in the memory.

[0019] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program can be executed by a processor to implement the steps in the above method.

[0020] The beneficial effect is: the present application obtains the color coordinates of the sub-display area and the brightness of each sub-pixel, and then obtains the correction coefficient, and compensates the display panel through the correction coefficient. The advantage of the method of the present application is that it solves the problem of large errors in the color coordinates of the sub-pixels collected by the acquisition device, thereby improving the compensation accuracy of the brightness of the display panel and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0022] Figure 1 It is a structural schematic diagram of an embodiment of a display panel of the present application;

[0023] Figure 2 It is a schematic diagram of a flow chart of an implementation method of a display panel compensation method of the present application;

[0024] Figure 3 yes Figure 2 A schematic flow chart of an implementation method of step S100;

[0025] Figure 4 yes Figure 3 A schematic flow chart of an implementation method of step S110;

[0026] Figure 5 yes Figure 2 A schematic flow chart of an implementation method of step S200;

[0027] Figure 6 It is a structural schematic diagram of an implementation method of the compensation device of the present application;

[0028] Figure 7 It is a structural schematic diagram of another embodiment of the compensation device of the present application;

[0029] Figure 8 It is a structural schematic diagram of an implementation method of a computer-readable storage medium of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that the terms "first" and "second" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations 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 limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0032] See also Figure 1 In the present application, a compensation method for a display panel 10 is provided, wherein the display area AA of the display panel 10 includes at least one sub-display area SA, that is, the display area AA may be composed of one sub-display area SA or multiple sub-display areas SA. The sub-display area SA includes multiple pixel units PX, and the pixel unit PX includes at least one sub-pixel SPX, that is, the pixel unit PX may have only one sub-pixel SPX or multiple sub-pixels SPX, and the sub-display area SA includes multiple pixel units PX, that is, no matter how many sub-pixels SPX the pixel unit PX includes, the number of sub-pixels SPX included in the sub-display area SA is greater than 2.

[0033] See also Figure 2 , the present application provides a compensation method for a display panel 10. The steps are as follows:

[0034] S100: Obtaining the measured color coordinates corresponding to the sub-display area SA.

[0035] Specifically, the color coordinate acquisition device can be used to obtain the measured color coordinates of multiple sub-pixels SPX in the sub-display area SA at one time, or multiple times. The measured color coordinates of multiple sub-pixels SPX are processed to obtain the measured color coordinates corresponding to the sub-display area SA. The data processing method can be to take the average value of the measured color coordinates of multiple sub-pixels SPX, or to take the median of the measured color coordinates of multiple sub-pixels SPX, or to take the measured mode of the color coordinates of multiple sub-pixels SPX. The specific selection can be adjusted according to the actual situation. After the above processing, a pair of measured color coordinates are obtained, which are the measured color coordinates corresponding to the sub-display area SA, that is, the entire sub-display area SA has only one pair of measured color coordinates.

[0036] S200 : For each pixel unit PX in the display area AA, a correction coefficient corresponding to the pixel unit PX is determined according to the measured color coordinates corresponding to the sub-display area SA and the measured brightness corresponding to the pixel unit PX.

[0037] Specifically, the pixel unit PX includes at least one sub-pixel SPX, and the measured brightness of each sub-pixel SPX in the sub-display area SA is collected one by one by a brightness collection device. Therefore, the accurate measured brightness of each sub-pixel SPX can be obtained, and then according to the corresponding measured color coordinates of the sub-display area SA in the above step S100, the correction coefficient corresponding to each pixel unit PX can be determined. That is to say, in the sub-display area SA, the measured color coordinates are unique, but the measured brightness of each sub-pixel SPX may be different, so the correction coefficient corresponding to each pixel unit PX determined may also be different.

[0038] S300: Compensating the display brightness of the sub-pixel SPX in the pixel unit PX according to the correction coefficient corresponding to the pixel unit PX.

[0039] Specifically, according to the correction coefficient obtained in the above step S200, the correction coefficient is applied to the display brightness of the sub-pixel SPX in the pixel unit PX, so as to achieve the purpose of correcting the brightness.

[0040] Compared with the prior art, the present application combines the measured color coordinates of the sub-display area SA with the measured brightness of the sub-pixel SPX. The effect of the present application is to solve the problem in the prior art that the color coordinate acquisition device collects a single pixel with a large error in the measured color coordinates, resulting in a poor compensation effect. The measured color coordinates of the sub-display area SA of the present application can improve the accuracy of compensation, thereby improving the display effect of the display panel. At the same time, the measured color coordinates are unified for processing, which can improve the speed of compensation.

[0041] In one application scenario, see Figure 3 In the above step S100, the step of obtaining the measured color coordinates corresponding to the sub-display area SA includes:

[0042] S110: Acquire the measured color coordinates of each sub-pixel SPX in the sub-display area SA.

[0043] Specifically, the measured color coordinates of each sub-pixel SPX in the sub-display area SA can be collected one by one by a color coordinate collection device. However, in the prior art, the results of the measured color coordinates of each sub-pixel SPX are usually greatly different from the actual results due to equipment limitations, and therefore cannot be directly used for compensation.

[0044] S120: Calculate the average value of the measured color coordinates of each sub-pixel SPX to obtain the measured color coordinates corresponding to the sub-display area SA.

[0045] Specifically, since the acquisition error of the color coordinate acquisition device in the prior art is relatively large, the problem of inaccurate compensation caused by inaccurate acquisition of the acquisition device can be improved by averaging the color coordinates of all or part of the sub-pixels SPX in the sub-display area SA.

[0046] In another application scenario, in the above step S120, the median of the measured color coordinates of each sub-pixel SPX may be calculated to obtain the measured color coordinates corresponding to the sub-display area SA.

[0047] In another application scenario, in the above step S120, the mode of the measured color coordinates of each sub-pixel SPX may be calculated to obtain the measured color coordinates corresponding to the sub-display area SA.

[0048] For further information, see Figure 4 The step of obtaining the measured color coordinates of each sub-pixel SPX in the sub-display area SA includes: in response to the number of sub-pixels SPX in the sub-display area SA exceeding a number threshold, using a color analyzer to obtain the measured color coordinates of each sub-pixel SPX in the sub-display area SA; otherwise, using a CCD (charge coupled device) camera to obtain the measured color coordinates of each sub-pixel SPX in the sub-display area SA.

[0049] Specifically, due to the design of the CCD camera and the color analyzer, the CCD camera can be more suitable for collecting the measured color coordinates of the sub-pixels SPX in the sub-display area SA of a small area. When the number of sub-pixels in the sub-display area SA exceeds the number threshold, the CCD camera cannot correspond and needs to be switched to the color analyzer. The color analyzer collects a relatively larger range of the sub-display area SA. For example, a CA410 model color analyzer can be used. Therefore, the effect of the present application is that it can judge according to the number of sub-pixels in the sub-display area SA, and then select a suitable module to collect the measured color coordinates.

[0050] In the above step S200, please refer to Figure 5 The step of determining the correction coefficient corresponding to the pixel unit PX according to the measured color coordinates corresponding to the sub-display area SA and the measured brightness corresponding to the pixel unit PX includes:

[0051] S210: Determine an original stimulus value matrix according to the measured color coordinates corresponding to the sub-display area SA and the measured brightness corresponding to the pixel unit PX.

[0052] Specifically, according to the CIE colorimetric system, the relationship between the abscissa x, ordinate y and vertical axis z in the color coordinates and the three stimulus values ​​of the first stimulus value X, the second stimulus value Y and the third stimulus value Z is as follows:

[0053]

[0054] We can further get:

[0055]

[0056] Here, z=1-xy, therefore, only the abscissa x and the ordinate y in the measured color coordinates of the sub-pixel SPX need to be obtained, and Y is also the measured brightness of the sub-pixel SPX.

[0057] In an application scenario, when the pixel unit PX includes a first sub-pixel R, a second sub-pixel G, and a third sub-pixel B, the sub-display area SPX corresponds to three color coordinates, which include a first measured color coordinate, a second measured color coordinate, and a third measured color coordinate. The final determined original stimulus value matrix M O ,as follows:

[0058]

[0059]

[0060] Among them, x rO is the abscissa of the first measured color coordinate, y rO is the ordinate of the first measured color coordinate, x gO is the abscissa of the second measured color coordinate, y gO is the ordinate of the second measured color coordinate, x bO is the abscissa of the third measured color coordinate, y bO X is the ordinate of the third measured color coordinate; rO , Y rO , Z rO are the first stimulus value, the second stimulus value, and the third stimulus value of the three stimulus values ​​of the first sub-pixel R before correction, respectively. gO , Y gO , Z gO are the first stimulus value, the second stimulus value, and the third stimulus value of the three stimulus values ​​of the second sub-pixel G before correction, respectively. bO , Y bO , Z bO They are, in order, the first stimulation value, the second stimulation value, and the third stimulation value of the three stimulation values ​​of the third sub-pixel B before correction.

[0061] S220: Obtaining a correction coefficient matrix corresponding to the pixel unit PX according to the original stimulation value matrix and the preset target stimulation value matrix.

[0062] Specifically, the target stimulus value matrix is ​​determined according to the actual preset target, and can be set according to the actual situation. The target stimulus value matrix M T ,as follows:

[0063]

[0064] Among them, X rT , Y rT , Z rT are the first stimulus value, the second stimulus value, and the third stimulus value of the target value of the three stimulus values ​​of the first sub-pixel R after correction, respectively. gT , Y gT , Z gT are the first stimulus value, the second stimulus value, and the third stimulus value of the target values ​​of the three stimulus values ​​of the second sub-pixel G before correction, respectively. bT , Y bT , Z bT They are the first stimulus value, the second stimulus value, and the third stimulus value of the target values ​​of the three stimulus values ​​of the third sub-pixel B before correction. The correction coefficient matrix corresponding to the pixel unit PX can be obtained according to the above-mentioned original stimulus value matrix and the preset target stimulus value matrix. Therefore, different correction coefficient matrices can be obtained according to the different preset target stimulus value matrices. Through the above-mentioned settings, it is easy to obtain the corresponding correction coefficient according to the actual collected measured brightness and measured color coordinates and the preset target, and it is also convenient to calculate in matrix form.

[0065] Furthermore, in the above step S210, the step of determining the original stimulus value matrix according to the measured color coordinates corresponding to the sub-display area SA and the measured brightness corresponding to the pixel unit PX includes:

[0066] The original stimulus value matrix is ​​determined according to the following formula:

[0067]

[0068] Specifically, the above formula is the product of splitting the matrix in formula ① into two parts. The part on the left side of the multiplication sign is the measured color coordinate parameter matrix, and the part on the right side of the multiplication sign is the measured brightness parameter matrix (Y rO , Y gO , Y bO The original stimulus value matrix M is the brightness of the first sub-pixel R, the second sub-pixel G, and the third sub-pixel B respectively. O The formula is split into two parts: the measured color coordinates and the measured brightness of the pixel unit PX. Therefore, the measured color coordinates and the measured brightness of the pixel unit PX are easier to distinguish. In a sub-display area SA, there is only one set of measured color coordinates, and each pixel unit PX therein can have a measured brightness. Therefore, in the matrix form, the measured color coordinate parameter matrix remains unchanged, but the measured brightness parameter matrix changes. By splitting the matrix, it can be calculated more conveniently and the space occupied by the parameters can be saved.

[0069] In the above step S220, the step of obtaining the correction coefficient matrix corresponding to the pixel unit PX according to the original stimulation value matrix and the preset target stimulation value matrix includes obtaining the correction coefficient matrix Mc corresponding to the pixel unit PX according to the following formula.

[0070] Among them, M T is the target stimulus value matrix, is the inverse matrix of the original stimulus value matrix.

[0071] Specifically,

[0072] Wherein, when the first sub-pixel is displayed alone, it displays the first primary color, when the second sub-pixel is displayed alone, it displays the second primary color, and when the third sub-pixel is displayed alone, it displays the third primary color; C rr When the first primary color is displayed alone, the brightness correction coefficient of the first primary color; C rg The brightness correction coefficient of the second primary color when the first primary color is displayed alone; C rb The brightness correction coefficient of the third primary color when the first primary color is displayed alone; C gr The brightness correction coefficient of the first primary color when the second primary color is displayed alone; C gg When the second primary color is displayed alone, the brightness correction coefficient of the second primary color; C gb The brightness correction coefficient of the third primary color when the second primary color is displayed alone; C br The brightness correction coefficient of the first primary color when the third primary color is displayed alone; C bg The brightness correction coefficient of the second primary color when the third primary color is displayed alone; C bb When the third primary color is displayed alone, the brightness correction coefficient of the third primary color is used. In one embodiment, the first primary color, the second primary color and the third primary color may be a red primary color, a green primary color and a blue primary color, respectively.

[0073] By the correction coefficient matrix M C Used to correct the original stimulus value matrix M O Get the target stimulus value matrix M T , the corresponding formula is as follows:

[0074] M T =M C ×M O ;

[0075] Then, both sides of the equation are multiplied by the inverse matrix of the original stimulus value matrix Finally, the correction coefficient matrix M is obtained C The present application can quickly and comprehensively obtain the correction coefficient matrix M corresponding to the pixel unit PX in matrix form. C .

[0076] In the above step S300, the step of compensating the display brightness of the sub-pixel SPX in the pixel unit PX according to the correction coefficient corresponding to the pixel unit PX includes compensating the display brightness of the sub-pixel SPX in the pixel unit PX according to the following formula:

[0077]

[0078] Among them, M C is the correction coefficient corresponding to the pixel unit PX, L O is a matrix composed of the display brightness of each sub-pixel SPX in the pixel unit PX, L′ T It is a matrix composed of actual compensated brightness obtained after compensation of each sub-pixel SPX in the pixel unit PX.

[0079] Specifically, L O is a matrix composed of the display brightness of each sub-pixel SPX in the pixel unit PX. According to the above embodiment, L O It can be a display brightness matrix composed of the first sub-pixel R, the second sub-pixel G and the third sub-pixel B in the pixel unit PX, and the matrix elements include L r is the display brightness of the first sub-pixel R, L g is the display brightness of the second sub-pixel G, L b is the display brightness of the third sub-pixel B. C The display brightness of the pixel unit PX is compensated, and the final compensation is L′ T , L′ T It can be the actual compensation brightness matrix composed of the first sub-pixel R, the second sub-pixel G and the third sub-pixel B in the compensated pixel unit PX, and the matrix elements include L′ r is the actual compensated brightness of the first sub-pixel R, L′ g is the actual compensated brightness of the second sub-pixel G, L′ b is the actual compensated brightness of the third sub-pixel B. Of course, in some other embodiments, it is also possible to choose not to use the matrix form for compensation.

[0080] The compensation method of the present application is applicable to display panels that are Micro LED (micro light emitting diode) or MINI LED (sub-millimeter light emitting diode) display panels. Since Micro LED or MINI LED display panels have the characteristics of batch and mass transfer, there will be sub-pixels SPX in some areas with the same source, and the sub-pixels SPX in this area have the same color coordinates. Therefore, in the brightness compensation of Micro LED or MINI LED, after obtaining the color coordinates of each sub-pixel SPX, it will be simpler and more accurate to process the color coordinates of the sub-display area. Of course, in some other embodiments, the method of the present application can also be used in other display technologies, such as liquid crystal display technology, organic light emitting display technology, quantum dot display technology, etc.

[0081] See also Figure 6 , Figure 6 1 is a schematic diagram of the structure of an embodiment of the compensation device of the present application. The compensation device 100 includes the compensation method of the display panel of any of the above embodiments, wherein the display area of ​​the display panel in the compensation method includes at least one sub-display area, the sub-display area includes a plurality of pixel units, the pixel unit includes at least one sub-pixel, and the compensation device 100 includes an acquisition module 110, a determination module 120 and a compensation module 130.

[0082] Among them, the acquisition module 110 is used to acquire the measured color coordinates corresponding to the sub-display area; the determination module 120 is connected to the acquisition module 110, and is used to determine the correction coefficient corresponding to the pixel unit for each pixel unit in the display area according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit; the compensation module 130 is connected to the determination module 120, and is used to compensate the display brightness of the sub-pixel in the pixel unit according to the correction coefficient corresponding to the pixel unit. The acquisition module 110, the determination module 120 and the compensation module 130 can be composed of any combination of computer hardware or software. The compensation method can refer to the above embodiment and will not be repeated here.

[0083] See also Figure 7 , Figure 7 2 is a schematic diagram of another embodiment of the compensation device of the present application. The compensation device 200 includes a processor 210, a memory 220, and a communication circuit 230. The processor 210 is coupled to the memory 220 and the communication circuit 230 respectively. The memory 220 stores program data. The processor 210 implements the steps in any of the above-mentioned implementation methods by executing the program data in the memory 220. The detailed steps can be found in the above-mentioned implementations and will not be repeated here.

[0084] Among them, the compensation device 200 can be any device with brightness compensation capability, such as industrial equipment. In some embodiments, the compensation device 200 can be a display device. For example, the compensation device 200 can be a mobile phone, a computer, a vehicle-mounted central control display device, a wearable device, a television, a game console, etc., without limitation herein.

[0085] See also Figure 8 , Figure 8 The computer-readable storage medium 400 stores a computer program 410, which can be executed by a processor to implement the steps in any of the above methods.

[0086] Among them, the computer-readable storage medium 400 can specifically be a device that can store the computer program 410, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, or it can also be a server that stores the computer program 410. The server can send the stored computer program 410 to other devices for execution, or it can also run the stored computer program 410 by itself.

[0087] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A compensation method for a display panel, characterized in that: The display area of ​​the display panel includes at least one sub-display area, the sub-display area includes a plurality of pixel units, the pixel unit includes at least one sub-pixel, and the compensation method includes: Obtaining the measured color coordinates corresponding to the sub-display area; For each of the pixel units in the display area, determining a correction coefficient corresponding to the pixel unit according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit; The display brightness of the sub-pixels in the pixel unit is compensated according to the correction coefficient corresponding to the pixel unit.

2. The compensation method according to claim 1, characterized in that: The step of obtaining the measured color coordinates corresponding to the sub-display area includes: obtaining the measured color coordinates of each sub-pixel in the sub-display area; The average value of the measured color coordinates of each sub-pixel is calculated to obtain the measured color coordinates corresponding to the sub-display area.

3. The compensation method according to claim 2, characterized in that: The step of obtaining the measured color coordinates of each sub-pixel in the sub-display area comprises: In response to the number of sub-pixels in the sub-display area exceeding a number threshold, obtaining measured color coordinates of each sub-pixel in the sub-display area using a color analyzer; Otherwise, a CCD camera is used to obtain the measured color coordinates of each sub-pixel in the sub-display area.

4. The compensation method according to claim 1, characterized in that: The step of determining the correction coefficient corresponding to the pixel unit according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit comprises: Determining an original stimulus value matrix according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit; According to the original stimulus value matrix and the preset target stimulus value matrix, a correction coefficient matrix corresponding to the pixel unit is obtained.

5. The compensation method according to claim 4, characterized in that: The pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel, the sub-display area corresponds to three measured color coordinates, and the three measured color coordinates include a first measured color coordinate, a second measured color coordinate and a third measured color coordinate; The step of determining the original stimulus value matrix according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit includes: The original stimulus value matrix is ​​determined according to the following formula: Among them, x rO is the abscissa of the first measured color coordinate, y ro is the ordinate of the first measured color coordinate, x gO is the abscissa of the second measured color coordinate, ygO is the ordinate of the second measured color coordinate, x bo is the abscissa of the third measured color coordinate, y bo is the ordinate of the third measured color coordinate, Y rO is the measured brightness value of the first sub-pixel, Y gO is the measured brightness value of the second sub-pixel and Y bO is the measured brightness value of the third sub-pixel.

6. The compensation method according to claim 4, characterized in that: The step of obtaining the correction coefficient matrix corresponding to the pixel unit according to the original stimulus value matrix and the preset target stimulus value matrix comprises: The correction coefficient matrix M corresponding to the pixel unit is obtained according to the following formula c ; Among them, M T is the target stimulus value matrix, is the inverse matrix of the original stimulus value matrix.

7. The compensation method according to claim 1, characterized in that: The step of compensating the display brightness of the sub-pixels in the pixel unit according to the correction coefficient corresponding to the pixel unit comprises: The display brightness of the sub-pixels in the pixel unit is compensated according to the following formula: L′ T =M C ×L O ; Among them, M C is the correction coefficient corresponding to the pixel unit, L O is a matrix composed of the display brightness of each sub-pixel in the pixel unit, L′ T It is a matrix composed of actual compensated brightness obtained after compensation of each sub-pixel in the pixel unit.

8. A compensation device, characterized in that: A compensation method for a display panel according to any one of claims 1 to 7, wherein a display area of ​​the display panel includes at least one sub-display area, the sub-display area includes a plurality of pixel units, the pixel unit includes at least one sub-pixel, and the compensation device includes: An acquisition module, used for acquiring the measured color coordinates corresponding to the sub-display area; a determination module connected to the acquisition module, and configured to determine, for each pixel unit in the display area, a correction coefficient corresponding to the pixel unit according to the measured color coordinates corresponding to the sub-display area and the measured brightness corresponding to the pixel unit; The compensation module is connected to the determination module and is used to perform compensation processing on the display brightness of the sub-pixels in the pixel unit according to the correction coefficient corresponding to the pixel unit.

9. A compensation device, characterized in that: The compensation device comprises a memory and a processor coupled to each other, wherein the memory stores program data, and the processor calls the program data to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program can be executed by a processor to implement the steps in the method according to any one of claims 1 to 7.

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