CN111063289B - Gray scale compensation method and device and display equipment - Google Patents

Abstract

The present application provides a grayscale compensation method, device and display device. The method includes the following steps: screening out a target pixel unit that is qualified for charging from the plurality of pixel units, and acquiring a color parameter of the target pixel unit as a first reference color parameter; The gray scale of the first pixel unit to be compensated increases successively, and the first actual color parameter of the first pixel unit when the gray scale increases each time is obtained; The first actual color parameter is respectively compared with the first reference color parameter, so as to filter out the first compensated grayscale value from the grayscale values of the first pixel unit adjusted multiple times; according to each of the first grayscale values The order compensation value compensates each corresponding first pixel unit.

Description

Grayscale compensation method, device and display device

technical field

The present application relates to the field of display, and in particular, to a grayscale compensation method, device and display device.

Background technique

Today's panel market is developing towards large size and high resolution, which leads to complex panel design, increased in-plane wiring, and increased load. In order to reduce the temperature of driving new products, a corresponding driving method needs to be adopted; under driving, the design of the panel mostly adopts Specific pixels to reduce panel flickering. However, when the charging is not ideal, there will be color mixing or color line phenomenon. Therefore, the prior art has defects and is in urgent need of improvement.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a grayscale compensation method, device and display device, which have the beneficial effects of improving the compensation effect and improving the picture quality.

The present application provides a grayscale compensation method for grayscale compensation of a display panel, wherein the display panel includes a plurality of pixel units distributed in an array, the plurality of pixel units include a plurality of first pixel units, and the The grayscale compensation method includes the following steps:

Screen out a target pixel unit that is qualified for charging from the plurality of pixel units, and obtain the color parameter of the target pixel unit as the first reference color parameter;

increasing the gray scale of the first pixel units to be compensated among the plurality of first pixel units successively, and acquiring the first actual color parameter of the first pixel unit when the gray scale increases each time;

Comparing the first actual color parameter of the first pixel unit with the first reference color parameter each time the gray scale increases, so as to filter from the gray scale values of the first pixel unit adjusted for multiple times get the first compensation grayscale value;

Each corresponding first pixel unit is compensated according to each of the first grayscale compensation values.

In the grayscale compensation method described in the present application, the first actual color parameter of the first pixel unit when each grayscale is increased is compared with the first reference color parameter, so as to obtain from the The step of screening out the first compensated gray-scale value from the multiple-adjusted gray-scale values of the first pixel unit includes:

Comparing the first actual color parameters of the first pixel unit with the first reference color parameters each time the gray scale increases, to select a color matching the preset condition from the first actual color parameters. the first actual color parameter;

The selected grayscale value corresponding to the first actual color parameter that meets the condition is used as the first compensated grayscale value.

In the grayscale compensation method described in this application, both the first actual color parameter and the first reference color parameter include a chromaticity parameter and a luminance parameter;

comparing the first actual color parameters of the first pixel unit with the first reference color parameters each time the gray scale increases, so as to select a preset color parameter from the first actual color parameters. Condition in the steps of the first actual color parameter:

The first actual color parameter that meets the preset condition is a first actual color parameter whose chrominance parameter and luminance parameter are closest to the chrominance parameter and luminance parameter of the first reference color parameter.

In the grayscale compensation method described in this application, the display panel further includes a plurality of second pixel units, wherein the grayscale of the first pixel unit varies from 0 to a, and the grayscale of the second pixel unit The order changes from b to c, where 0<b<c<a;

The step of compensating each corresponding first pixel unit according to each of the first grayscale compensation values further includes:

According to the compensated first pixel unit whose gray level change is 0 to b and the first pixel unit whose gray level change is 0 to c, the first pixel unit of the second pixel unit whose gray level change is b to c to be compensated is obtained. Two reference color parameters;

Comparing the second actual color parameter of the second pixel unit with the second reference color parameter during each grayscale adjustment, so as to obtain from the grayscale values of the second pixel unit during multiple adjustments. filtering out the second compensation grayscale value;

Gray-scale compensation is performed on the second pixel unit to be compensated according to the second gray-scale compensation value.

In the grayscale compensation method described in this application, the second reference color parameter includes a low-order color parameter and a high-order color parameter, and the color parameter of the first pixel unit whose grayscale change is 0 to b that has been compensated is used as the low-order color parameter, the color parameter of the first pixel unit whose gray scale change has been compensated is 0 to c is used as the high-order color parameter;

The second reference color parameter includes a low-order reference color parameter and a high-order reference color parameter.

In the grayscale compensation method described in the present application, the second actual color parameter of the second pixel unit in each grayscale adjustment is compared with the second reference color parameter, so as to obtain from the In the step of filtering out the second compensated gray-scale value from the gray-scale values of the second pixel unit during multiple adjustments:

The lower grayscale value corresponding to the low-level color parameter closest to the low-level reference color parameter is used as the lower-limit grayscale compensation value, and the grayscale upper limit value corresponding to the high-level color parameter closest to the high-level reference color parameter is used as The upper limit gray level compensation value, the lower limit gray level compensation value and the upper limit gray level compensation value constitute the second gray level compensation value.

A grayscale compensation device for grayscale compensation of a display panel, the display panel comprising a plurality of pixel units distributed in an array, the plurality of pixel units including a plurality of first pixel units, the grayscale compensation device include:

a first acquisition module, configured to screen out a target pixel unit that is qualified for charging from the plurality of pixel units, and acquire a color parameter of the target pixel unit as a first reference color parameter;

The second acquiring module is configured to successively increase the gray scale of the first pixel unit to be compensated among the plurality of first pixel units, and acquire the first actual color parameter of the first pixel unit when the gray scale increases each time ;

The first screening module is configured to compare the first actual color parameter of the first pixel unit with the first reference color parameter each time the gray scale is increased, so as to obtain from the multiple times of the first pixel unit. Screening out the first compensation grayscale value from the adjusted grayscale value;

A first compensation module, configured to compensate each of the corresponding first pixel units according to each of the first grayscale compensation values.

In the grayscale compensation device described in this application, the first screening module is used for:

Comparing the first actual color parameters of the first pixel unit with the first reference color parameters each time the gray scale increases, to select a color matching the preset condition from the first actual color parameters. The first actual color parameter; and the selected grayscale value corresponding to the first actual color parameter that meets the condition is used as the first compensated grayscale value.

In the grayscale compensation device described in this application, both the first actual color parameter and the first reference color parameter include a chromaticity parameter and a luminance parameter;

The first screening module is configured to select the first actual color parameter that meets the preset condition as a first actual color whose chromaticity parameter and luminance parameter are closest to the chromaticity parameter and luminance parameter of the first reference color parameter. parameter.

A display device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor is used to execute any one of the methods described above by calling the computer program stored in the memory.

As can be seen from the above, the present invention selects a target pixel unit that is qualified for charging from the plurality of pixel units, and obtains the color parameter of the target pixel unit as the first reference color parameter; The gray scale of the first pixel unit to be compensated in the unit increases successively, and obtains the first actual color parameter of the first pixel unit when the gray scale increases each time; The first actual color parameter of the pixel unit is compared with the first reference color parameter, so as to filter out the first compensated gray-scale value from the gray-scale values adjusted for the first pixel unit for many times; The gray-scale compensation value compensates each corresponding first pixel unit, thereby realizing the compensation of the pixel unit, which has the beneficial effects of enhancing the compensation effect and improving the picture quality.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a flowchart of a grayscale compensation method according to an embodiment of the present application.

FIG. 2 is another flowchart of a grayscale compensation method according to an embodiment of the present application.

FIG. 3 is a structural diagram of a grayscale compensation device according to an embodiment of the present application.

FIG. 4 is another structural diagram of the grayscale compensation apparatus according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a first process of a grayscale compensation method provided by an embodiment of the present application.

FIG. 6 is a schematic diagram of a second process of the grayscale compensation method provided by the embodiment of the present application.

FIG. 7 is a schematic diagram of a third process of the grayscale compensation method provided by the embodiment of the present application.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present application, and should not be construed as a limitation on the present application.

Please refer to FIG. 1 , which is a flowchart of a grayscale compensation method in some embodiments of the present invention. The method is used for grayscale compensation of a display panel, the display panel includes a plurality of pixel units distributed in an array, the plurality of pixel units include a plurality of first pixel units and a plurality of second pixel units, wherein the first pixel units are The gray scale of the pixel unit varies from 0 to a, it can also be said that the first pixel unit is a zero gray pixel unit, and the gray scale of the second pixel unit varies from b to c, and it can also be said that the second pixel unit is a non-zero gray pixel unit. , where 0<b<c<a; the method includes the following steps:

S101. Screen out a target pixel unit that is qualified for charging from the plurality of first pixel units, and acquire a color parameter of the target pixel unit as a first reference color parameter.

Among them, the various color parameters mentioned in this article include luminance parameters and chromaticity parameters. When a color mixing phenomenon occurs in the display panel, a first pixel unit that is qualified for charging among the plurality of first pixel units is automatically screened out as a target pixel unit.

For example, please refer to FIG. 5 , which is a schematic diagram of a first process of a grayscale compensation method provided by an embodiment of the present application. As shown in FIG. 5 , when a color mixing phenomenon occurs on the display panel, a first pixel unit that is qualified for charging among the plurality of first pixel units is automatically selected as the target pixel unit 100 , wherein, in an embodiment, the The grayscale of the target pixel unit is 64.

S102. Increase the gray scale of the first pixel unit to be compensated among the plurality of first pixel units successively, and acquire the first actual color parameter of the first pixel unit when the gray scale increases each time.

Please refer to FIG. 6 , which is a schematic diagram of a second process of the grayscale compensation method provided by the embodiment of the present application. In this step, as shown in FIG. 6 , the gray scale of the first pixel unit 200 to be compensated among the plurality of first pixel units may be increased successively, and the first pixel unit in each gray scale increase may be obtained. an actual color parameter. For example, the initial grayscale of the first pixel unit 200 varies from 0 to 64. When adjusting the grayscale of the first pixel unit 200, the grayscale of the first pixel unit 200 is increased by 1 each time, and changes to 65 in turn. , 66, 67, 68....255. In addition, each time the grayscale value is adjusted, the first actual color parameter of the first pixel unit under the grayscale value is detected, that is, the actual luminance parameter and the actual chromaticity parameter.

S103. Comparing the first actual color parameter of the first pixel unit with the first reference color parameter each time the grayscale increases, so as to obtain the grayscale value from the multiple adjusted grayscale values of the first pixel unit. The first compensation grayscale value is filtered out.

In this step, in some embodiments, this step S103 includes: S1031, comparing the first actual color parameter of the first pixel unit with the first reference color parameter each time the gray scale increases, To select a first actual color parameter that meets the preset condition from the first actual color parameters; wherein, the first actual color parameter that meets the preset condition is that the chromaticity parameter and the luminance parameter are closest to the first reference The chrominance parameter of the color parameter and a first actual color parameter of the luminance parameter. S1032. Use the selected grayscale value corresponding to the first actual color parameter that meets the condition as the first compensated grayscale value.

Please refer to FIG. 7 , which is a schematic diagram of a third process of the grayscale compensation method provided by the embodiment of the present application. In this step, as shown in FIG. 7 , the first actual color parameter of the first pixel unit 200 when each grayscale is increased is compared with the first reference color parameter of the target pixel unit 100, so as to obtain a The first compensated grayscale value is selected from the grayscale values adjusted for multiple times by the unit 200 . For example, compare the first actual color parameter of the first pixel unit 200 with the first reference color parameter of the target pixel unit 100 each time the gray scale is increased, and obtain the adjusted gray scale value from the first pixel unit 200 for multiple times. The first compensation grayscale value 76 is filtered out.

S104: Compensate each corresponding first pixel unit according to each of the first grayscale compensation values.

After the first grayscale compensation value of each first pixel unit is calculated, the grayscale value of each corresponding first pixel unit is compensated according to each first grayscale compensation value.

As can be seen from the above, the present invention selects a target pixel unit that is qualified for charging from the plurality of pixel units, and obtains the color parameter of the target pixel unit as the first reference color parameter; The gray scale of the first pixel unit to be compensated in the unit increases successively, and obtains the first actual color parameter of the first pixel unit when the gray scale increases each time; The first actual color parameter of the pixel unit is compared with the first reference color parameter, so as to filter out the first compensated gray-scale value from the gray-scale values adjusted for the first pixel unit for many times; The gray-scale compensation value compensates each corresponding first pixel unit, thereby realizing the compensation of the pixel unit, which has the beneficial effects of enhancing the compensation effect and improving the picture quality.

Please refer to FIG. 2 , which is a flowchart of a grayscale compensation method in some embodiments of the present invention. The grayscale compensation method includes the following steps:

S201. Screen out a target pixel unit that is qualified for charging from the plurality of first pixel units, and acquire a color parameter of the target pixel unit as a first reference color parameter.

Among them, the various color parameters mentioned in this article include luminance parameters and chromaticity parameters. When a color mixing phenomenon occurs in the display panel, a first pixel unit that is qualified for charging among the plurality of first pixel units is automatically screened out as a target pixel unit.

S202. Increase the gray scale of the first pixel unit to be compensated among the plurality of first pixel units successively, and acquire the first actual color parameter of the first pixel unit when the gray scale increases each time.

In this step, for example, the initial gray level of the first pixel unit is changed from 0 to 64. When adjusting the gray level of the first pixel unit, the gray level of the first pixel unit is increased by 1 each time, and the gray level of the first pixel unit is changed in sequence. is 65, 66, 67, 68....255. In addition, each time the grayscale value is adjusted, the first actual color parameter of the first pixel unit under the grayscale value is detected, that is, the actual luminance parameter and the actual chromaticity parameter.

S203. Compare the first actual color parameter of the first pixel unit with the first reference color parameter each time the grayscale increases, so as to obtain the grayscale value from the multiple adjusted grayscale values of the first pixel unit. The first compensation grayscale value is filtered out.

In this step, in some embodiments, the step S203 includes: S2031 , comparing the first actual color parameter of the first pixel unit with the first reference color parameter each time the gray scale increases, To select a first actual color parameter that meets the preset condition from the first actual color parameters; wherein, the first actual color parameter that meets the preset condition is that the chromaticity parameter and the luminance parameter are closest to the first reference The chrominance parameter of the color parameter and a first actual color parameter of the luminance parameter. S2032. Use the selected grayscale value corresponding to the first actual color parameter that meets the condition as the first compensated grayscale value.

S204: Compensate each corresponding first pixel unit according to each of the first grayscale compensation values.

After the first grayscale compensation value of each first pixel unit is calculated, the grayscale value of each corresponding first pixel unit is compensated according to each first grayscale compensation value.

S205: Acquire a second pixel whose gray level change to be compensated is b to c according to the first pixel unit whose gray level change is 0 to b that has been compensated and the first pixel unit whose gray level change is 0 to c that has been compensated The second reference color parameter for the cell.

Wherein, the second reference color parameter includes a low-order color parameter and a high-order color parameter, the color parameter of the first pixel unit whose grayscale change has been compensated is 0 to b is taken as the low-order color parameter, and the compensated grayscale change is 0 to c The color parameter of the first pixel unit is used as a high-order color parameter; correspondingly, the second reference color parameter includes a low-order reference color parameter and a high-order reference color parameter. For example, for the second pixel unit whose grayscale changes from b to c, the color parameter when the grayscale is b is the low-order color parameter of the second pixel unit, and the color parameter when the grayscale is c is the second pixel The high-order color parameter of the cell.

E.g. Taking the second pixel unit whose gray level change is 32 to 96 as an example, according to steps S201-S204, it can be obtained: the first gray level compensation value of the first pixel unit whose gray level change is 0 to 32 can be obtained, and this The color parameter at the time, that is, the low-order reference color parameter. Similarly, the first grayscale compensation value of the first pixel unit whose grayscale changes from 0 to 96 can be obtained, and the color parameter at this time, that is, the high-order reference color parameter, can be obtained.

S206: Compare the second actual color parameter of the second pixel unit with the second reference color parameter during each grayscale adjustment, so as to obtain from the grayscale values of the second pixel unit during multiple adjustments. The second compensation grayscale value is filtered out.

In this step, the grayscale lower limit value corresponding to the low-order color parameter closest to the low-order reference color parameter is used as the lower-limit grayscale compensation value, and the grayscale corresponding to the high-order color parameter closest to the high-order reference color parameter is used as the grayscale value. The upper-limit gray-scale compensation value is used as an upper-limit gray-scale compensation value, and the lower-limit gray-scale compensation value and the upper-limit gray-scale compensation value constitute the second gray-scale compensation value.

The lower limit value 32 of the gray scale range of the second pixel unit to be compensated is decreased by 1 each time, which is 31, 30, 29...5 in sequence. The upper limit value 96 of the gray scale range of the second pixel unit to be compensated is increased by 1 each time, which is 97, 98, 99, 100 . . . And obtain the color parameter value each time the gray scale is adjusted, so that by comparison today, it can be obtained that the limited gray scale compensation value of the second pixel unit and the upper limit gray scale compensation value are 28 and 100 respectively, therefore, the second pixel unit can be obtained. The grayscale compensation value of the pixel unit is (28, 100).

S207. Perform grayscale compensation on the second pixel unit to be compensated according to the second grayscale compensation value.

After the second grayscale compensation value of each second pixel unit is obtained by calculation, the grayscale value of each corresponding second pixel unit is compensated according to each second grayscale compensation value.

As can be seen from the above, the present invention selects a target pixel unit that is qualified for charging from the plurality of pixel units, and obtains the color parameter of the target pixel unit as the first reference color parameter; The gray scale of the first pixel unit to be compensated in the unit increases successively, and obtains the first actual color parameter of the first pixel unit when the gray scale increases each time; The first actual color parameter of the pixel unit is compared with the first reference color parameter, so as to filter out the first compensated gray-scale value from the gray-scale values adjusted for the first pixel unit for many times; The gray-scale compensation value compensates each corresponding first pixel unit, thereby realizing the compensation of the pixel unit, which has the beneficial effects of enhancing the compensation effect and improving the picture quality.

Please refer to FIG. 3 . FIG. 3 is a structural diagram of a grayscale compensation device in some embodiments of the present invention. The device is used for grayscale compensation of a display panel. The display panel includes a plurality of pixel units distributed in an array. The plurality of pixel units include a plurality of first pixel units and a plurality of second pixel units, wherein the gray scale of the first pixel unit varies from 0 to a, and the gray scale of the second pixel unit varies from b to c, wherein , 0<b<c<a; the apparatus includes: a first acquisition module 301 , a second acquisition module 302 , a first screening module 303 and a first compensation module 304 .

Wherein, the first obtaining module 301 is used to filter out a target pixel unit that is qualified for charging from the plurality of pixel units, and obtain the color parameter of the target pixel unit as the first reference color parameter; the first actual color parameter And the first reference color parameters include chrominance parameters and luminance parameters. Among them, the various color parameters mentioned in this article include luminance parameters and chromaticity parameters. When a color mixing phenomenon occurs in the display panel, a first pixel unit that is qualified for charging among the plurality of first pixel units is automatically screened out as a target pixel unit.

Wherein, the second obtaining module 302 is configured to successively increase the gray scale of the first pixel unit to be compensated among the plurality of first pixel units, and obtain the first pixel unit of the first pixel unit when the gray scale increases each time The actual color parameter; for example, the initial grayscale of the first pixel unit changes from 0 to 64. When adjusting the grayscale of the first pixel unit, the grayscale of the first pixel unit is increased by 1 each time, and changes to 65, 66, 67, 68....255. In addition, each time the grayscale value is adjusted, the first actual color parameter of the first pixel unit under the grayscale value is detected, that is, the actual luminance parameter and the actual chromaticity parameter.

Wherein, the first screening module 303 is configured to compare the first actual color parameter of the first pixel unit with the first reference color parameter each time the gray scale increases, so as to obtain the information from the first pixel unit. The first compensated gray-scale value is filtered out from the multiple-adjusted gray-scale values of Compare with the first reference color parameters respectively, so as to select a first actual color parameter that meets the preset condition from the first actual color parameters; The grayscale value is used as the first compensation grayscale value. The first screening module 303 is configured to select the first actual color parameter that meets the preset condition as a first actual color parameter whose chrominance parameter and luminance parameter are closest to the chrominance parameter and luminance parameter of the first reference color parameter.

The first compensation module 304 is configured to compensate each of the corresponding first pixel units according to each of the first grayscale compensation values.

As can be seen from the above, the present invention selects a target pixel unit that is qualified for charging from the plurality of pixel units, and obtains the color parameter of the target pixel unit as the first reference color parameter; The gray scale of the first pixel unit to be compensated in the unit increases successively, and obtains the first actual color parameter of the first pixel unit when the gray scale increases each time; The first actual color parameter of the pixel unit is compared with the first reference color parameter, so as to filter out the first compensated gray-scale value from the gray-scale values adjusted for the first pixel unit for many times; The gray-scale compensation value compensates each corresponding first pixel unit, thereby realizing the compensation of the pixel unit, which has the beneficial effects of enhancing the compensation effect and improving the picture quality.

Please refer to FIG. 4. FIG. 4 is a structural diagram of a grayscale compensation device in some embodiments of the present invention. The device is used for grayscale compensation of a display panel. The display panel includes a plurality of pixel units distributed in an array. The plurality of pixel units include a plurality of first pixel units and a plurality of second pixel units, wherein the gray scale of the first pixel unit varies from 0 to a, and the gray scale of the second pixel unit varies from b to c, wherein , 0<b<c<a; the apparatus includes: a first acquisition module 301 , a second acquisition module 302 , a first screening module 303 , and a first compensation module 304 .

Wherein, the first obtaining module 301 is used to filter out a target pixel unit that is qualified for charging from the plurality of pixel units, and obtain the color parameter of the target pixel unit as the first reference color parameter; the first actual color parameter And the first reference color parameters include chrominance parameters and luminance parameters. Among them, the various color parameters mentioned in this article include luminance parameters and chromaticity parameters. When a color mixing phenomenon occurs in the display panel, a first pixel unit that is qualified for charging among the plurality of first pixel units is automatically screened out as a target pixel unit.

Wherein, the second obtaining module 302 is configured to successively increase the gray scale of the first pixel unit to be compensated among the plurality of first pixel units, and obtain the first pixel unit of the first pixel unit when the gray scale increases each time The actual color parameter; for example, the initial grayscale of the first pixel unit changes from 0 to 64. When adjusting the grayscale of the first pixel unit, the grayscale of the first pixel unit is increased by 1 each time, and changes to 65, 66, 67, 68....255. In addition, each time the grayscale value is adjusted, the first actual color parameter of the first pixel unit under the grayscale value is detected, that is, the actual luminance parameter and the actual chromaticity parameter.

Wherein, the first screening module 303 is configured to compare the first actual color parameter of the first pixel unit with the first reference color parameter each time the gray scale increases, so as to obtain the information from the first pixel unit. The first compensated gray-scale value is filtered out from the multiple-adjusted gray-scale values of Compare with the first reference color parameters respectively, so as to select a first actual color parameter that meets the preset condition from the first actual color parameters; The grayscale value is used as the first compensation grayscale value. The first screening module 303 is configured to select the first actual color parameter that meets the preset condition as a first actual color parameter whose chrominance parameter and luminance parameter are closest to the chrominance parameter and luminance parameter of the first reference color parameter.

The first compensation module 304 is configured to compensate each of the corresponding first pixel units according to each of the first grayscale compensation values.

Wherein, the third obtaining module 305 is configured to obtain the gray-scale change to be compensated according to the first pixel unit whose gray-scale change has been compensated from 0 to b and the first pixel unit whose gray-scale change has been compensated is 0 to c. is the second reference color parameter of the second pixel unit from b to c; wherein, the second reference color parameter includes a low-order color parameter and a high-order color parameter, and the compensated grayscale change is the color of the first pixel unit from 0 to b The parameter is used as the low-order color parameter, and the color parameter of the first pixel unit whose gray scale change is 0 to c has been compensated as the high-order color parameter; correspondingly, the second reference color parameter includes the low-order reference color parameter and the high-order reference color parameter. For example, for the second pixel unit whose grayscale changes from b to c, the color parameter when the grayscale is b is the low-order color parameter of the second pixel unit, and the color parameter when the grayscale is c is the second pixel The high-order color parameter of the cell.

E.g. Taking the second pixel unit whose gray level change is 32 to 96 as an example, according to steps S201-S204, it can be obtained: the first gray level compensation value of the first pixel unit whose gray level change is 0 to 32 can be obtained, and this The color parameter at the time, that is, the low-order reference color parameter. Similarly, the first grayscale compensation value of the first pixel unit whose grayscale changes from 0 to 96 can be obtained, and the color parameter at this time, that is, the high-order reference color parameter, can be obtained.

Wherein, the second screening module 306 is configured to compare the second actual color parameter of the second pixel unit with the second reference color parameter during each grayscale adjustment, so as to obtain the information from the second pixel unit. The second compensation grayscale value is screened out from the grayscale values during multiple adjustments; the grayscale lower limit value corresponding to the low-order color parameter closest to the low-order reference color parameter is used as the lower-limit grayscale compensation value, and the grayscale lower limit value corresponding to the low-order color parameter closest to the low-order reference color parameter The grayscale upper limit value corresponding to the high-order color parameter of the high-order reference color parameter is used as the upper limit grayscale compensation value, and the lower limit grayscale compensation value and the upper limit grayscale compensation value constitute the second grayscale compensation value.

The lower limit value 32 of the gray scale range of the second pixel unit to be compensated is decreased by 1 each time, which is 31, 30, 29...5 in sequence. The upper limit value 96 of the gray scale range of the second pixel unit to be compensated is increased by 1 each time, which is 97, 98, 99, 100 . . . And obtain the color parameter value each time the gray scale is adjusted, so that by comparison today, it can be obtained that the limited gray scale compensation value of the second pixel unit and the upper limit gray scale compensation value are 28 and 100 respectively, therefore, the second pixel unit can be obtained. The grayscale compensation value of the pixel unit is (28, 100)

The second compensation module 307 is configured to perform gray-scale compensation on the second pixel unit to be compensated according to the second gray-scale compensation value.

As can be seen from the above, the present invention selects a target pixel unit that is qualified for charging from the plurality of pixel units, and obtains the color parameter of the target pixel unit as the first reference color parameter; The gray scale of the first pixel unit to be compensated in the unit increases successively, and obtains the first actual color parameter of the first pixel unit when the gray scale increases each time; The first actual color parameter of the pixel unit is compared with the first reference color parameter, so as to filter out the first compensated gray-scale value from the gray-scale values adjusted for the first pixel unit for many times; The gray-scale compensation value compensates each corresponding first pixel unit, thereby realizing the compensation of the pixel unit, which has the beneficial effects of enhancing the compensation effect and improving the picture quality.

The present invention also provides a display device, comprising a processor and a memory, wherein a computer program is stored in the memory, and the processor is configured to execute any of the above by calling the computer program stored in the memory. The method described above is used to achieve the following functions: screen out a target pixel unit that is qualified for charging from the plurality of pixel units, and obtain the color parameter of the target pixel unit as the first reference color parameter; The gray scale of the first pixel unit to be compensated in a pixel unit is increased successively, and the first actual color parameter of the first pixel unit at each gray scale increase is obtained; The first actual color parameter during the increase is respectively compared with the first reference color parameter, so as to filter out the first compensated gray-scale value from the gray-scale values of the multiple adjustment of the first pixel unit; The first grayscale compensation value compensates each of the corresponding first pixel units.

It should be noted that those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, the The storage medium may include, but is not limited to, a read only memory (ROM, Read Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and the like.

The grayscale compensation method, device, and display device provided by the embodiments of the present application have been described in detail above. The principles and implementations of the present application are described with specific examples in this paper. The descriptions of the above embodiments are only used to help understand this application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. To sum up, the content of this specification should not be construed as a limitation to the present application.

Claims (6)

1. A grayscale compensation method for grayscale compensation of a display panel, the display panel comprising a plurality of pixel units distributed in an array, the plurality of pixel units comprising a plurality of first pixel units, characterized in that: The grayscale compensation method includes the following steps: Screen out a target pixel unit that is qualified for charging from the plurality of pixel units, and obtain the color parameter of the target pixel unit as the first reference color parameter; increasing the gray scale of the first pixel units to be compensated among the plurality of first pixel units successively, and acquiring the first actual color parameter of the first pixel unit when the gray scale increases each time; Comparing the first actual color parameter of the first pixel unit with the first reference color parameter each time the gray scale increases, so as to filter from the gray scale values of the first pixel unit adjusted for multiple times Get the first grayscale compensation value; Compensate each of the corresponding first pixel units according to each of the first grayscale compensation values; The display panel further includes a plurality of second pixel units, wherein the grayscale changes of the first pixel units are 0 to a, and the grayscale changes of the second pixel units are b to c, where 0<b <c<a; The step of compensating each corresponding first pixel unit according to each of the first grayscale compensation values further includes: According to the compensated first pixel unit whose gray level change is 0 to b and the first pixel unit whose gray level change is 0 to c, the first pixel unit of the second pixel unit whose gray level change is b to c to be compensated is obtained. Two reference color parameters; Comparing the second actual color parameter of the second pixel unit with the second reference color parameter during each grayscale adjustment, so as to obtain from the grayscale values of the second pixel unit during multiple adjustments. Filter out the second grayscale compensation value; Gray-scale compensation is performed on the second pixel unit to be compensated according to the second gray-scale compensation value. 2 . The gray scale compensation method according to claim 1 , wherein the first actual color parameter of the first pixel unit when the gray scale increases each time is respectively performed with the first reference color parameter. 3 . By comparison, the step of filtering out the first gray-scale compensation value from the multiple-adjusted gray-scale values of the first pixel unit includes: Comparing the first actual color parameters of the first pixel unit with the first reference color parameters each time the gray scale increases, to select a color matching the preset condition from the first actual color parameters. the first actual color parameter; The selected grayscale value corresponding to the first actual color parameter that meets the condition is used as the first grayscale compensation value. 3. The grayscale compensation method according to claim 2, wherein the first actual color parameter and the first reference color parameter both include a chromaticity parameter and a luminance parameter; comparing the first actual color parameters of the first pixel unit with the first reference color parameters each time the gray scale increases, so as to select a preset color parameter from the first actual color parameters. Condition in the steps of the first actual color parameter: The first actual color parameter that meets the preset condition is a first actual color parameter whose chrominance parameter and luminance parameter are closest to the chrominance parameter and luminance parameter of the first reference color parameter. 4 . The grayscale compensation method according to claim 1 , wherein the second reference color parameter includes a low-order color parameter and a high-order color parameter, and the compensated grayscale changes from 0 to b of the first pixel unit. 5 . The color parameter is used as the low-order color parameter, and the color parameter of the first pixel unit whose gray scale change has been compensated from 0 to c is used as the high-order color parameter; The second reference color parameter includes a low-order reference color parameter and a high-order reference color parameter. 5 . The grayscale compensation method according to claim 4 , wherein the second actual color parameter of the second pixel unit in each grayscale adjustment is respectively performed with the second reference color parameter. 6 . Compare, in the step of filtering out the second gray-scale compensation value from the gray-scale values of the second pixel unit during multiple adjustments: The lower grayscale value corresponding to the low-level color parameter closest to the low-level reference color parameter is used as the lower-limit grayscale compensation value, and the grayscale upper limit value corresponding to the high-level color parameter closest to the high-level reference color parameter is used as The upper limit gray level compensation value, the lower limit gray level compensation value and the upper limit gray level compensation value constitute the second gray level compensation value. 6. A display device, characterized in that it comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor is used to execute claims 1- by calling the computer program stored in the memory. 5. The method of any one.

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