CN117198196A

CN117198196A - Picture compensation device, picture compensation method and display device

Info

Publication number: CN117198196A
Application number: CN202311467775.5A
Authority: CN
Inventors: 陈�胜; 高翔; 谢俊烽
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2023-12-08
Anticipated expiration: 2043-11-07
Also published as: CN117198196B

Abstract

The application provides a picture compensation device, which comprises an image acquisition module, an image processing module and a picture compensation module. The image acquisition module acquires an x-th sampling characteristic image according to an x-th sampling picture displayed in the x-th pixel area, wherein x is more than or equal to 1 and less than or equal to n. The image processing module is used for acquiring an x-th sampling data table according to the x-th sampling characteristic image. The picture compensation module is stored with a preset target data table, and the picture compensation module obtains an x-th compensation data set according to the x-th sampling data table and the target data table, so that the data driving circuit compensates the brightness of the picture displayed in the x-th pixel area according to the x-th compensation data set. Therefore, under the condition that the charging of the plurality of sub-pixels is insufficient and the charging rates of the plurality of sub-pixels are different, the technical scheme of the application realizes the compensation of the brightness of the picture displayed by the display panel, and further ensures that the brightness of the display panel is uniform. The application also provides a picture compensation method and a display device.

Description

Picture compensation device, picture compensation method and display device

Technical Field

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

Background

With the rapid development of display technology, large-sized, high-resolution, high-refresh-rate display panels are being favored by users.

Due to the increase in the size of the display panel and the increase in resolution and refresh rate, the sub-pixels of the display panel often have undercharge, and the charging rates of the sub-pixels are different. The charging rate of a subpixel affects the luminance of the subpixel, and the lower the charging rate, the lower the luminance of the subpixel. The charging rates of the plurality of sub-pixels are different, so that the brightness of the plurality of sub-pixels is also different, and the display panel is dark and uneven in brightness.

Therefore, how to solve the problems of dark brightness and uneven brightness of the display panel caused by insufficient charging rate of the sub-pixels in the prior art is a urgent need for those skilled in the art.

Disclosure of Invention

In view of the foregoing drawbacks of the prior art, an object of the present application is to provide a picture compensation device, a picture compensation method applied to the picture compensation device, and a display device, which are intended to solve the problems of dark brightness and uneven brightness of a display panel due to insufficient charging rate of sub-pixels in the prior art.

In order to solve the above-mentioned technical problems, an embodiment of the present application provides a picture compensation device, where the picture compensation device is electrically connected to a data driving circuit, the data driving circuit is electrically connected to a display panel, and the display panel includes a first pixel region to an nth pixel region, where n is a positive integer. The picture compensation device comprises an image acquisition module, an image processing module and a picture compensation module electrically connected with the data driving circuit, wherein the image processing module is electrically connected with the image acquisition module and the picture compensation module respectively. The image acquisition module is used for acquiring an x-th sampling characteristic image according to an x-th sampling picture displayed in an x-th pixel area and sending the x-th sampling characteristic image to the image processing module, wherein x is more than or equal to 1 and less than or equal to n, and x is a positive integer. The image processing module is used for acquiring an x-th sampling data table according to the x-th sampling characteristic image and sending the x-th sampling data table to the picture compensation module. The picture compensation module is used for obtaining an x-th compensation data set according to the x-th sampling data table and the target data table, and sending the x-th compensation data set to the data driving circuit so that the data driving circuit compensates the brightness of a picture displayed in the x-th pixel area according to the x-th compensation data set.

In summary, the image compensation device provided in the embodiment of the application includes an image acquisition module, an image processing module and an image compensation module. The image acquisition module is used for acquiring an x-th sampling characteristic image according to an x-th sampling picture displayed in the x-th pixel area, and the image processing module is used for acquiring an x-th sampling data table according to the x-th sampling characteristic image. The picture compensation module is used for obtaining an x-th compensation data set according to the x-th sampling data table and the target data table, and sending the x-th compensation data set to the data driving circuit so that the data driving circuit compensates the brightness of a picture displayed in the x-th pixel area according to the x-th compensation data set. Therefore, under the condition that the charging of the plurality of sub-pixels is insufficient and the charging rates of the plurality of sub-pixels are different, the brightness of the picture displayed by the display panel is compensated by the technical scheme of the application, so that the brightness of the display panel is uniform.

In an exemplary embodiment, each of the pixel regions includes a first sub-pixel region to an mth sub-pixel region, and m is a positive integer. The image acquisition module is used for acquiring a y-th debugging feature image according to a y-th debugging picture displayed in a y-th sub-pixel area and sending the y-th debugging feature image to the image processing module, wherein y is more than or equal to 1 and less than or equal to m, and y is a positive integer. The image processing module is used for acquiring a y-th debugging data table according to the y-th debugging characteristic image and sending the y-th debugging data table to the picture compensation module. The picture compensation module is used for obtaining a y compensation data set according to the y debugging data table and the target data table, and sending the y compensation data set to the data driving circuit so that the data driving circuit compensates the brightness of a picture displayed in the y sub-pixel area according to the y compensation data set.

In an exemplary embodiment, the picture compensation device further includes a display control module, where the display control module is electrically connected to the data driving circuit, and the display control module is configured to output a display data set to the data driving circuit, and the data driving circuit controls the first subpixel area to display a first debug picture according to the display data set. The display control module is further electrically connected with the picture compensation module, the picture compensation module sends the y compensation data set to the display control module, and the display control module sends the y compensation data set and the display data set to the data driving circuit, so that the data driving circuit controls the y+1st sub-pixel area to display the y+1st debugging picture according to the y compensation data set and the display data set, wherein y is more than or equal to 1 and less than or equal to m < -1 >. And if the RGB values in the y+1 debugging data table are inconsistent with the RGB values in the target data table, the picture compensation module obtains a y+1 compensation data set according to the y+1 debugging data table and the target data table, and the data driving circuit compensates the brightness of the picture displayed in the y+1 sub-pixel area according to the y compensation data set and the y+1 compensation data set.

In an exemplary embodiment, the picture compensation device further includes a display control module, the display control module is electrically connected to the data driving circuit, the display control module is configured to output a display data set to the data driving circuit, and the data driving circuit controls the first pixel area to display a first sampling picture according to the display data set. The display control module is further electrically connected with the picture compensation module, the picture compensation module sends the x-th compensation data set to the display control module, and the display control module sends the x-th compensation data set and the display data set to the data driving circuit, so that the data driving circuit controls the x+1th pixel area to display the x+1th sampling picture according to the x-th compensation data set and the display data set, wherein x is more than or equal to 1 and less than or equal to n-1. And if the RGB values in the x+1 sampling data table are inconsistent with the RGB values in the target data table, the picture compensation module obtains an x+1 compensation data set according to the x+1 sampling data table and the target data table, and the data driving circuit compensates the brightness of the picture displayed in the x+1 pixel area according to the x compensation data set and the x+1 compensation data set.

In an exemplary embodiment, the picture compensation module includes a judging unit and a calculating unit, the judging unit is electrically connected with the image processing module and the calculating unit, and the judging unit and the calculating unit both store the target data table. The image processing module sends the x-th sampling data table to the judging unit, and the judging unit is used for judging whether a plurality of RGB values of the x-th sampling data table are identical to a plurality of RGB values of the target data table. And if the RGB values of the x-th sampling data table are the same as the RGB values of the target data table, the computing unit acquires the x-compensation data set with the compensation RGB values being zero. And if the RGB values of the x-th sampling data table are different from the RGB values of the target data table, the calculating unit obtains the x-compensation data set with the compensation RGB values not being zero according to the x-th sampling data table and the target data table.

In an exemplary embodiment, after the data driving circuit compensates the brightness of the frame displayed in the first pixel area according to the first compensation data set, the image acquisition module is further configured to obtain a standard feature image according to a standard frame displayed in the first pixel area, and send the standard feature image to the image processing module, the image processing module is configured to acquire a standard data table according to the standard feature image, and the frame compensation module uses the standard data table as the preset target data table.

In an exemplary embodiment, the image compensation device further includes an image detection module, the image detection module is electrically connected to the data driving circuit and the image processing module, the image detection module controls the data driving circuit to output the same data signal to the first to nth pixel areas after the data driving circuit compensates the brightness of the frames displayed from the first to nth pixel areas, so that the first to nth pixel areas display detection frames, the image acquisition module acquires the first to nth detection images according to the detection frames from the first to nth pixel areas, and the image processing module acquires the first to nth detection data tables according to the first to nth detection images and sends the first to nth detection data tables to the image detection module, and the image detection module is used for screening out the maximum RGB data values from the first to nth detection data tables. If the ratio of the difference value between the maximum RGB value and the minimum RGB value to the maximum RGB value is greater than a preset threshold value, the picture compensation device re-compensates the brightness of the pictures displayed from the first pixel area to the nth pixel area.

Based on the same inventive concept, the embodiment of the present application further provides a picture compensation method, where the picture compensation device is applied to the picture compensation device, and the picture compensation method includes: providing a display panel, wherein the display panel comprises a first pixel area and an nth pixel area; controlling an x-th pixel area to display an x-th sampling picture, wherein x is more than or equal to 1 and less than or equal to n, and n is a positive integer; obtaining an x-th sampling characteristic image according to the x-th sampling picture; obtaining an x-th sampling data table according to the x-th sampling characteristic image; obtaining an x compensation data set according to the x sampling data table and a preset target data table, wherein the target data table is obtained according to a target picture; and compensating the brightness of the picture displayed in the x-th pixel area to the brightness of the target picture according to the x-th compensation data set and a preset display data set.

In summary, the x-th pixel region PRx can display the target image only when the sub-pixels are sufficiently charged. According to the picture compensation method provided by the application, the target picture can be displayed in the x-th pixel region PRx under the condition of insufficient charging of the sub-pixels, so that the brightness of the picture displayed by the display panel is compensated, and the brightness of the display panel is uniform and consistent.

In an exemplary embodiment, when x=1, a first sampling screen is controlled to be displayed in a first pixel area of the display panel according to the display data set. When x is more than or equal to 2 and less than or equal to n, controlling the x pixel area to display an x sampling picture according to the x-1 compensation data set and the display data set.

In an exemplary embodiment, the obtaining the x-th compensation data set according to the x-th sampling data table and a preset target data table includes: and judging whether a plurality of RGB values of the x-th sampling data table are identical to a plurality of RGB values of the target data table.

In an exemplary embodiment, if the plurality of RGB values of the x-th sample data table are the same as the plurality of RGB values of the target data table, obtaining the x-compensation data set with compensation RGB values of zero; or if the RGB values of the x-th sampling data table are different from the RGB values of the target data table, obtaining an x-th compensation data set according to the x-th sampling data table and a preset target data table, and further including: and obtaining the x compensation data group with the compensation RGB value not being zero according to the x sampling data table and the target data table.

Based on the same inventive concept, the embodiment of the application further provides a display device, which comprises a display panel and a data driving circuit electrically connected, wherein the data driving circuit stores the x-th compensation data set obtained by the picture compensation device, and the data driving circuit compensates the brightness of a picture displayed in the x-th pixel area of the display panel according to the x-th compensation data set.

In summary, the display device provided by the embodiment of the application includes a display panel and a data driving circuit, wherein the data driving circuit stores an xth compensation data set, and the data driving circuit compensates the brightness of a frame displayed in an xth pixel area of the display panel according to the xth compensation data set. Therefore, under the condition that the charging of the plurality of sub-pixels is insufficient and the charging rates of the plurality of sub-pixels are different, the brightness of the picture displayed by the display panel is compensated by the technical scheme of the application, so that the brightness of the display panel is uniform.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic circuit diagram of a display device according to a first embodiment of the present application;

FIG. 2 is a schematic circuit diagram of a frame compensation device according to a second embodiment of the present application;

FIG. 3 is a diagram of an x-th sample data table according to a second embodiment of the present application;

FIG. 4 is a diagram of a target data table according to a second embodiment of the present application;

FIG. 5 is a schematic diagram of a compensation data set according to a second embodiment of the present application;

FIG. 6 is a schematic diagram showing the luminance of an x-th pixel region before compensation according to a second embodiment of the present application;

FIG. 7 is a schematic diagram showing the compensation brightness of an x-th pixel region according to a second embodiment of the present application;

FIG. 8 is a schematic diagram showing the brightness of the compensated x-th pixel region according to the second embodiment of the present application;

FIG. 9 is a schematic circuit diagram of a frame compensation module according to a second embodiment of the present application;

fig. 10 is a schematic circuit diagram of a pixel area of a display device according to a second embodiment of the present application;

fig. 11 is a flowchart of a picture compensation method according to a third embodiment of the present application.

Reference numerals illustrate:

100-a display device; 110-a display panel; 112-data lines; 120-a data driving circuit; 200-picture compensation device; 210-an image acquisition module; 220-an image processing module; 230-a picture compensation module; 231-a judging unit; 232-a calculation unit; 240-a display control module; 250-an image detection module; PR 1-PRn-first pixel region-nth pixel region; PA 1-a first subpixel column; PA 2-second subpixel column; PA 3-third subpixel column; PB 1-PBm-first sub-pixel region-mth sub-pixel region; PBy-y sub-pixel region; p1-red subpixels; a P2-green sub-pixel; a P3-blue subpixel; 001-a first direction; 002-a second direction; S10-S60-picture compensation method; S51-S52-step S50.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the application. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the application may be practiced. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. Directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., in the present application are merely referring to the directions of the attached drawings, and thus, directional terms are used for better, more clear explanation and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprises," "comprising," "includes," "including," or "having," when used in this specification, are intended to specify the presence of stated features, operations, elements, etc., but do not limit the presence of one or more other features, operations, elements, etc., but are not limited to other features, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, and that there is no intention to exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof. It will also be understood that the meaning of "at least one" as described herein is one and more, such as one, two or three, etc., and the meaning of "a plurality" is at least two, such as two or three, etc., unless specifically defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Referring to fig. 1, fig. 1 is a schematic circuit diagram of a display device according to a first embodiment of the application. In an embodiment of the present application, the display device 100 includes a display panel 110, where the display panel 110 includes a first pixel region PR1 to an n-th pixel region PRn, and the first pixel region PR1 to the n-th pixel region PRn are sequentially spaced apart along a first direction 001 and each sequentially extend along a second direction 002, where the first direction 001 is perpendicular to the second direction 002. Each pixel region includes a first sub-pixel column PA1, a second sub-pixel column PA2, and a third sub-pixel column PA3, where the first sub-pixel column PA1, the second sub-pixel column PA2, and the third sub-pixel column PA3 are sequentially spaced apart along the first direction 001, and each sequentially extend along the second direction 002, that is, the first sub-pixel column PA1 and the third sub-pixel column PA3 of two adjacent pixel regions are adjacent and spaced apart, for example, the third sub-pixel column PA3 of the first pixel region PR1 and the first sub-pixel column PA1 of the second pixel region PR2 are adjacent and spaced apart, and the third sub-pixel column PA3 of the n-1 pixel region PRn-1 and the first sub-pixel column PA1 of the n-1 are adjacent and spaced apart. In an embodiment of the present application, the first subpixel column PA1 may be used to emit red light, the second subpixel column PA2 may be used to emit green light, and the third subpixel column PA3 may be used to emit blue light.

Note that n is a positive integer, and n is determined by the resolution of the display panel 110, which is not particularly limited in the present application.

In the embodiment of the present application, the first subpixel column PA1 includes red subpixels P1 sequentially spaced apart along the second direction 002, the second subpixel column PA2 includes green subpixels P2 sequentially spaced apart along the second direction 002, and the third subpixel column PA3 includes blue subpixels P3 sequentially spaced apart along the second direction 002. The display panel 110 further includes a plurality of data lines 112, each of the plurality of sub-pixels of the sub-pixel columns is electrically connected to one of the data lines 112, that is, the plurality of red sub-pixels P1 of the first sub-pixel column PA1 are electrically connected to one of the data lines 112, the plurality of green sub-pixels P2 of the second sub-pixel column PA2 are electrically connected to one of the data lines 112, and the plurality of blue sub-pixels P3 of the third sub-pixel column PA3 are electrically connected to one of the data lines 112. One red sub-pixel P1, one green sub-pixel P2 and one blue sub-pixel P3 in each pixel region sequentially arranged along the first direction 001 form a pixel unit, that is, each pixel unit includes one red sub-pixel P1, one green sub-pixel P2 and one blue sub-pixel P3 in one pixel region, that is, each pixel region includes a plurality of pixel units arranged at intervals along the second direction.

In an exemplary embodiment, the display device 100 further includes a data driving circuit 120, where the data driving circuit 120 is electrically connected to the plurality of data lines 112, the data driving circuit 120 is configured to output a data signal to each of the sub-pixels through the plurality of data lines 112, and the sub-pixels emit light of a corresponding color after receiving the data signal, that is, the red sub-pixel P1 emits red light, the green sub-pixel P2 emits green light, and the blue sub-pixel P3 emits blue light.

In an exemplary embodiment, the display device 100 may be a liquid crystal display device (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED) display device, or a Micro Light-Emitting Diode (Micro LED) display device, which is not particularly limited in the present application.

Note that the number of the pixel columns included in each pixel region is not limited to the number shown in fig. 1, and the number of the pixel columns included in each pixel region is not particularly limited in the present application. The number of the pixel columns of each pixel region may be determined according to the processing performance of the picture compensation apparatus 200, for example, each pixel region may include 3, 6, 30, 81, 150, 180 or other numbers of the pixel columns.

Referring to fig. 2, fig. 2 is a schematic circuit diagram of a picture compensation device according to a second embodiment of the present application. In the embodiment of the present application, the screen compensation device 200 is configured to compensate the brightness of the screen displayed on the display panel 110 by the data driving circuit 120 during performance test, so that the display panel 110 does not have dark brightness and uneven brightness when used by a user. The picture compensation device 200 includes an image acquisition module 210, an image processing module 220, a picture compensation module 230, and a display control module 240, wherein the image processing module 220 is electrically connected to the image acquisition module 210 and the picture compensation module 230, the picture compensation module 230 is further electrically connected to the data driving circuit 120, and the display control module 240 is electrically connected to the data driving circuit 120. The display control module 240 sends a display data set to the data driving circuit 120, the data driving circuit 120 controls the x-th pixel region PRx of the display panel 110 to display an x-th sampling image according to the display data set, and the image obtaining module 210 is configured to obtain a corresponding x-th sampling feature image according to the x-th sampling image, and send the x-th sampling feature image to the image processing module 220. The image processing module 220 is configured to obtain an x-th sampling data table according to the x-th sampling feature image, and send the x-th sampling data table to the frame compensation module 230. The frame compensation module 230 stores a preset target data table, and is configured to obtain an xth compensation data set according to the xth sampling data table and the target data table, and send the xth compensation data set to the data driving circuit 120, where the data driving circuit 120 stores the xth compensation data set, and compensates the brightness of the frame displayed in the xth pixel region PRx according to the xth compensation data set. Wherein x is equal to or greater than 1 and equal to or less than n, x is a positive integer, the target data table is obtained according to a target picture, the content displayed by the target picture is the same as that displayed by the xth sampling picture, and the brightness of the target picture can be the same as or different from that of the xth sampling picture.

It is understood that the data driving circuit 120 controls the x-th pixel region PRx to display the x-th sampling picture only according to the display data set, and in the case where the plurality of sub-pixels of the x-th pixel region PRx are sufficiently charged, the x-th pixel region PRx should display the target picture, but this may cause the x-th pixel region PRx to display the x-th sampling picture due to insufficient charging of the plurality of sub-pixels and different charging rates of the plurality of sub-pixels.

According to the technical scheme of the application, the x-th sampling image is obtained by shooting the x-th sampling image through the image acquisition module 210, the x-th sampling image is the image content displayed by the x-th sampling image, the image processing module 220 analyzes each pixel point of the x-th sampling image and obtains the coordinate and RGB value of each pixel point, wherein the larger the RGB value is, the larger the brightness of the pixel point is. It should be noted that, the pixel is a display unit of an image, and the pixel is a light emitting unit of the display panel 110, that is, a content displayed by one pixel is a content displayed by one pixel. Referring to fig. 3, fig. 3 is a schematic diagram of an x-th sampling data table disclosed in a second embodiment of the present application, where m is an abscissa of a pixel point, and n is an ordinate of a pixel point. For example, the RGB values of the pixel point with coordinates (m, 1) are (245, 200, 15), where 245 is the luminance of red (gray scale), 200 is the luminance of green (gray scale), and 15 is the luminance of blue (gray scale); the RGB values of the pixel point with coordinates (m, 2) are (246, 204, 16). For example, after the image obtaining module 210 obtains the x-th sampling feature image, the content displayed by the pixel unit with the coordinates of (x, 2) of the display panel 110 is the content displayed by the pixel point with the coordinates of (m, 2) of the x-sampling feature image. The luminance of the red sub-pixel P1 of the pixel unit corresponds to the R value of the RGB value, the luminance of the green sub-pixel P2 of the pixel unit corresponds to the G value of the RGB value, the luminance of the blue sub-pixel P3 of the pixel unit corresponds to the B value of the RGB value, 246 of the RGB values (246, 204, 16) is the R value, 204 is the G value, and 16 is the B value.

The picture compensation module 230 stores a preset target data table, where the target data table is obtained according to the content displayed by the target picture, that is, the target picture is shot and a target image is obtained, and the target data table is obtained according to the coordinates and RGB values of each pixel point of the target image. Referring to fig. 4, fig. 4 is a schematic diagram of a target data table according to a second embodiment of the present application, for example, RGB values of all pixel points in the target data table are (250, 210, 20), and it can be known from the RGB values that the light-emitting brightness of the pixel unit with the coordinate of (x, 1) of the target frame is greater than the light-emitting brightness of the pixel unit with the coordinate of (x, 1) of the x-th sampling frame, and the light-emitting brightness of the pixel unit with the coordinate of (x, 2) of the target frame is greater than the light-emitting brightness of the pixel unit with the coordinate of (x, 2) of the x-th sampling frame. The picture compensation module 230 obtains an x-th compensation data set according to the x-th sampling data table and the target data table, for example, please refer to fig. 5, fig. 5 is a schematic diagram of the compensation data set according to the second embodiment of the present application, wherein x is an abscissa of the pixel unit, y is an ordinate of the pixel unit, for example, a required compensation RGB value of the pixel unit with coordinates (x, 1) is (5, 10, 5), wherein 5 is a light-emitting brightness (gray level) required to be compensated for the red sub-pixel, 10 is a light-emitting brightness (gray level) required to be compensated for the green sub-pixel, 5 is a light-emitting brightness (gray level) required to be compensated for the blue sub-pixel, and a required compensation RGB value of the pixel unit with coordinates (x, 2) is (4, 6, 4).

The above technical solution is adopted to obtain the first compensation data set of the first pixel region PR1, obtain the second compensation data set of the second pixel region PR2, … …, and obtain the nth compensation data set of the nth pixel region PRn. The data driving circuit 120 stores the first compensation data set, the second compensation data set, … …, and the nth compensation data set, compensates the brightness of the displayed frame of the first pixel region PR1 according to the first compensation data set, compensates the brightness of the displayed frame of the second pixel region PR2 according to the second compensation data set, … …, compensates the brightness of the displayed frame of the nth pixel region PRn according to the nth compensation data set, and further compensates the brightness displayed by the display panel 110 as a whole. That is, the data driving circuit 120 stores the x-th compensation data set obtained by the picture compensation device 200, and the data driving circuit 120 compensates the brightness of the picture displayed in the x-th pixel region PRx of the display panel 110 according to the x-th compensation data set.

Referring to fig. 6, 7 and 8, fig. 6 is a schematic view of the luminance of the x-th pixel area before compensation according to the second embodiment of the present application, fig. 7 is a schematic view of the luminance of the x-th pixel area after compensation according to the second embodiment of the present application, and fig. 8 is a schematic view of the luminance of the x-th pixel area after compensation according to the second embodiment of the present application. The display control module 240 outputs the display data set to the data driving circuit 120, and the data driving circuit 120 controls the x-th pixel region PRx to display the x-th sampling frame according to the display data set, wherein when a plurality of sub-pixels of the x-th pixel region PRx are sufficiently charged and a plurality of sub-pixels have uniform charging rates, the light emitting brightness of a plurality of pixel units of the x-th pixel region PRx should be the same, but the light emitting brightness of a plurality of pixel units of the x-th pixel region PRx is different due to insufficient sub-pixel charging and different charging rates of a plurality of sub-pixels. The picture compensation module 230 of the picture compensation apparatus 200 obtains the x-th compensation data set, and sends the x-th compensation data set to the data driving circuit 120, where the data driving circuit 120 makes the x-th pixel region PRx display the target picture according to the x-th compensation data set and the display data set, that is, compensates the light-emitting brightness of a plurality of pixel units of the x-th pixel region PRx, so that the light-emitting brightness of a plurality of pixel units of the x-th pixel region PRx is the same, and repeats the above compensation steps, so that the light-emitting brightness of a plurality of pixel units of the first pixel region PR 1-the n-th pixel region PRn is the same, and further compensates the brightness displayed by the display panel 110.

In this embodiment of the present application, the data driving circuit 120 may permanently store the first compensation data set to the nth compensation data set, and control the display panel 110 to display a picture according to the compensation data set and the data set required when the display panel 110 displays normally, so that the display panel 110 does not have dark brightness and uneven brightness caused by insufficient charging of the sub-pixels and different charging rates of the sub-pixels when the display panel 110 is used by a user.

It should be noted that, in the picture compensation apparatus 200 provided by the present application, the first pixel region PR1, the second pixel region PR2, the third pixel regions PR3, … …, the n-2 pixel region PRn-2, the n-1 pixel region PRn-1, and the n-pixel region PRn are sequentially compensated. The technical solution of the present application not only can compensate the display brightness of the display panel 110, but also can compensate the color purity (saturation) of the display picture of the display panel 110, that is, can also compensate the color purity of the display picture of the display panel 110 by adjusting the magnitude of the compensation RGB value. The first to nth pixel regions PR1 to PRn are electrically connected to different ones of the data lines 112, respectively.

It should be noted that, according to the technical scheme of the present application, not only the problem of insufficient overall brightness of the display panel 110 caused by insufficient charging of the sub-pixels can be solved, but also the overall brightness of the display panel 110 can be reduced through the technical scheme of the present application when the overall brightness of the display panel 110 is too high. That is, when the sum of the compensation RGB values of a certain coordinate of the compensation data set is positive, that is, the R value, the G value, and the B value are added to be positive (for example, the required compensation RGB value of the pixel unit of the coordinate (x, 1) shown in fig. 5 is (5, 10, 5)), the technical solution of the present application increases the light-emitting brightness of the pixel unit of the coordinate, and when the sum of the compensation RGB values of a certain coordinate of the compensation data set is negative, that is, the R value, the G value, and the B value are added to be negative, the technical solution of the present application decreases the light-emitting brightness of the pixel unit of the coordinate.

In other embodiments of the present application, the picture compensation device 200 may compensate the brightness of the picture displayed in the plurality of pixel areas at the same time, that is, the image acquisition module 210 captures a plurality of the pixel areas at the same time and obtains a plurality of sampling feature images, the image processing module 220 obtains a plurality of sampling data tables at the same time according to a plurality of the sampling feature images, and the picture compensation module 230 obtains a plurality of compensation data sets at the same time according to a plurality of sampling data tables and the target data table.

In an exemplary embodiment, the image capturing module 210 may be a charge coupled device (Charge Coupled Device, CCD) camera, a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) camera, a digital camera, a single-lens camera, a micro-lens camera, or any device having a photographing function, which is not particularly limited by the present application.

In the embodiment of the present application, the display control module 240 outputs the display data set to the data driving circuit 120, and the data driving circuit 120 controls the first pixel region PR1 to display a first sampling image according to the display data set. The display control module 240 is further electrically connected to the picture compensation module 230, the picture compensation module 230 sends the xth compensation data set to the display control module 240, the display control module 240 sends the xth compensation data set and the display data set to the data driving circuit 120, and the data driving circuit 120 controls the xth+1th pixel region prx+1 to display the xth+1th sampling picture according to the xth compensation data set and the display data set, wherein x is greater than or equal to 1 and less than or equal to n-1.

It is understood that, for example, the data driving circuit 120 controls the first pixel region PR1 to display a first sampling picture according to the display data set, the picture compensation module 230 obtains a first compensation data set, and the data driving circuit 120 stores the first compensation data set and compensates the brightness of the picture displayed in the first pixel region PR1 according to the first compensation data set. The display control module 240 receives the first compensation data set sent by the frame compensation module 230, sends the first compensation data set and the display data set to the data driving circuit 120, and the data driving circuit 120 controls the second pixel region PR2 to display the second sampled frame according to the first compensation data set and the display data set. Since the first pixel region PR1 is adjacent to the second pixel region PR2, there is a case where the charging rates of the plurality of pixel units in the first pixel region PR1 are identical to the charging rates of the plurality of pixel units in the second pixel region PR2, the first compensation data set may be regarded as a second compensation data set, that is, the RGB values in the second compensation data set are identical to the RGB values in the first compensation data set, and the data driving circuit 120 causes the second pixel region PR2 to display the target picture according to the first compensation data set and the display data set, that is, compensates the brightness of the picture displayed by the second pixel region PR2, so that the step of compensating the second pixel region PR2 by the picture compensating device 200 is saved. The above technical effects are also applicable to the display control module 240 controlling the x+1th pixel region prx+1 to display the x+1th sampling frame through the data driving circuit 120 according to the x-th compensation data set and the display data set, wherein x is greater than or equal to 1 and less than or equal to n-1, and the application is not repeated.

It should be noted that, the x-th compensation data set is used as the x+1-th compensation data set so that the x+1-th pixel region prx+1 displays the x+1-th sampling frame. If the brightness of each pixel unit of the x+1-th sampling frame is consistent with that of each pixel unit of the target frame, that is, the RGB values in the x+1-th sampling data table are consistent with that in the target data table, that is, the data driving circuit 120 makes the x+1-th pixel region prx+1 display the target frame according to the x-th compensation data set and the display data set, the display control module 240 sends the x-th compensation data set and the display data set to the data driving circuit 120, and the data driving circuit 120 controls the x+2-th pixel region prx+2 to display the x+2-th sampling frame according to the x-th compensation data set and the display data set.

If the brightness of each pixel unit of the x+1-th sampling frame is inconsistent with the brightness of each pixel unit of the target frame, that is, the RGB values in the x+1-th sampling data table are inconsistent with the RGB values in the target data table, the frame compensation module 230 obtains an x+1-th compensation data set according to the x+1-th sampling data table and the target data table, and the data driving circuit 120 compensates the brightness of the frame displayed in the x+1-th pixel region prx+1 according to the x-th compensation data set and the x+1-th compensation data set.

In an embodiment of the present application, the picture compensation module 230 is further configured to determine whether a plurality of RGB values of the x-th sampling data table are the same as a plurality of RGB values of the target data table. If the RGB values of the x-th sample data table are the same as the RGB values of the target data table, the picture compensation module 230 obtains the x-compensation data set with the compensation RGB values being zero. If the RGB values of the x-th sample data table are different from the RGB values of the target data table, the frame compensation module 230 obtains the x-compensation data set with the compensated RGB values not all being zero according to the x-th sample data table and the target data table.

It will be appreciated that, for example, the data driving circuit 120 may control the x-th pixel region PRx to display the x-th sampling frame according to the x-1 th compensation data set and the display data set, where the content and brightness of the x-th sampling frame displayed are identical to those of the target frame displayed, the RGB values of the x-th sampling data table are identical to those of the target data table, and the frame compensation module 230 directly generates the x-compensation data set with zero compensation RGB values, without calculating the x-compensation data set according to the x-th sampling data table and the target data table, thereby saving the step of compensating the x-compensation data by the frame compensation device 200 and improving the compensation speed of the frame compensation device 200.

It is further understood that, for example, the data driving circuit 120 controls the x-th pixel region PRx to display the x-th sampling frame according to the x-1-th compensation data set and the display data set. There is a case that a plurality of sub-pixels of a certain pixel area are charged sufficiently, that is, the pixel area does not need to be subjected to brightness compensation, for example, the x-th pixel area PRx does not need to be subjected to brightness compensation, the picture compensation module 230 directly generates the x compensation data set with zero compensation RGB values, and does not need to generate the x compensation data set according to calculation of the x sampling data table and the target data table, so that the step of compensating the x compensation data by the picture compensation device 200 is saved, and the compensation speed of the picture compensation device 200 is improved.

Referring to fig. 9, fig. 9 is a schematic circuit diagram of a frame compensation module according to a second embodiment of the present application. In an embodiment of the present application, the image processing module 220 obtains the coordinates and RGB values of each pixel point of the x-th sampling feature image according to the x-th sampling feature image to generate the x-th sampling data table.

In the embodiment of the present application, referring to fig. 9, the picture compensation module 230 includes a determining unit 231 and a calculating unit 232, the determining unit 231 is electrically connected to the image processing module 220 and the calculating unit 232, and the target data table is stored in both the determining unit 231 and the calculating unit 232. The image processing module 220 sends the x-th sampling data table to the judging unit 231, and the judging unit 231 is configured to judge whether the RGB values of the x-th sampling data table are the same as the RGB values of the target data table. If the RGB values of the x-th sample data table are the same as the RGB values of the target data table in a one-to-one correspondence, that is, the RGB values of the x-th sample data table with coordinates (m, 1) are identical to the RGB values of the target data table with coordinates (m, 1), the RGB values of the x-th sample data table with coordinates (m, 2) are identical to the RGB values of the target data table with coordinates (m, 2), … …, and the RGB values of the x-th sample data table with coordinates (m, n) are identical to the RGB values of the target data table with coordinates (m, n), the calculating unit 232 obtains the x-compensation data set with compensated RGB values all being zero. If the RGB values of the x-th sampling data table are different from the RGB values of the target data table, that is, the RGB values of at least one identical coordinate of the x-th sampling data table and the target data table are different, the calculating unit 232 obtains the x-compensation data set with the compensated RGB values not being zero according to the x-th sampling data table and the target data table. The calculation unit 232 is electrically connected to the display control module 240 and transmits the x compensation data set to the display control module 240.

It should be noted that, the calculating unit 232 may have an algorithm program built therein, so that the calculating unit 232 may obtain the x compensation data set according to the RGB values of the x-th sampling data table and the RGB values of the target data table. For example, referring to fig. 3 to 5, the RGB values of the pixel coordinate (m, 2) of the x-th sample data table are (246, 204, 16), the RGB values of the pixel coordinate (m, 2) of the target data table are (250, 210, 20), and the algorithm may be a subtraction algorithm, and the generated pixel unit coordinate is (x, 2) and the compensation RGB values are (4, 6, 4).

In other embodiments of the present application, the algorithm may be a subtraction and multiplication algorithm, that is, multiplying a compensation coefficient based on the compensation RGB value (4, 6, 4).

In summary, the image compensation apparatus 200 according to the embodiment of the application includes an image acquisition module 210, an image processing module 220 and an image compensation module 230, wherein the image processing module 220 is electrically connected to the image acquisition module 210 and the image compensation module 230, and the image compensation module 230 is also electrically connected to the data driving circuit 120. The image obtaining module 210 obtains an x-th sampling image displayed in the x-th pixel area PRx by using a shooting manner to obtain a corresponding x-th sampling feature image, and sends the x-th sampling feature image to the image processing module 220. The image processing module 220 obtains a corresponding x-th sampling data table according to the x-th sampling feature image, and sends the x-th sampling data table to the frame compensation module 230. The frame compensation module 230 obtains a corresponding x-th compensation data set according to the x-th sampling data table and a preset target data table, and sends the x-th compensation data set to the data driving circuit 120. The data driving circuit 120 stores the x-th compensation data set, and compensates the brightness of the picture displayed in the x-th pixel region PRx according to the x-th compensation data set. The x is more than or equal to 1 and less than or equal to n, the target data table is obtained according to a target picture, the x-th sampling picture and the target picture are displayed in the same content, and the brightness of the x-th sampling picture is the same as or different from the brightness of the target picture. Therefore, in the case that the charging of the plurality of sub-pixels is insufficient and the charging rates of the plurality of sub-pixels are different, the technical scheme of the application realizes the compensation of the brightness of the picture displayed by the display panel 110, so that the brightness of the display panel 110 is uniform.

In other embodiments of the present application, after the data driving circuit 120 compensates the brightness of the frame displayed in the first pixel region PR1 according to the first compensation data set, the image obtaining module 210 is further configured to obtain a standard feature image according to the standard frame displayed in the first pixel region PR1, and send the standard feature image to the image processing module 220, the image processing module 220 is configured to obtain a standard data table according to the standard feature image, and the frame compensating module 230 uses the standard data table as the preset target data table.

It is understood that the picture compensation module 230 obtains a second compensation data set according to the second sampling data table and the target data table, wherein the target data table is the standard data table. By using the standard data table as the preset target data table, that is, the picture compensation module 230 uses the standard picture displayed in the first pixel region PR1 after compensation as a reference, and compensates the brightness of the pictures displayed in the second pixel region PR2 to the nth pixel region PRn according to the reference, the brightness of the pictures displayed in the first pixel region PR1 to the nth pixel region is better consistent.

In an embodiment of the present application, referring to fig. 2, the image compensation apparatus 200 further includes an image detection module 250, the image detection module 250 is electrically connected to the data driving circuit 120 and the image processing module 220, respectively, and after the data driving circuit 120 compensates the brightness of the image displayed by the first pixel region PR1 to the n-th pixel region PRn, the image detection module 250 controls the data driving circuit 120 to output the same data signal to the first pixel region PR1 to the n-th pixel region PRn, so that the first pixel region to the n-th pixel region display a detected image. It will be appreciated that the same data signal causes the brightness of each of the pixel units of the first to nth pixel regions to be uniform in the case where the sub-pixels are sufficiently charged.

In an embodiment of the present application, the image obtaining module 210 obtains a first detection image to an nth detection image according to a detection frame from the first pixel region PR1 to the nth pixel region PRn, the image processing module 220 obtains a first detection data table to an nth detection data table according to the first detection image to the nth detection image, and sends the first detection data table to the nth detection data table to the image detecting module 250, and the image detecting module 250 is configured to screen out a maximum RGB value and a minimum RGB value in the first detection data table to the nth detection data table. If the ratio of the difference between the maximum RGB value and the minimum RGB value to the maximum RGB value is greater than the preset threshold, the picture compensation device 200 re-compensates the brightness of the pictures displayed in the first to nth pixel regions. Wherein, the preset threshold value can be less than or equal to 10%. If the ratio of the difference between the maximum RGB value and the minimum RGB value to the maximum RGB value is greater than the preset threshold, the brightness of the display panel 110 after compensation is uniform, and the display effect is better, the picture compensation device 200 does not re-compensate the brightness of the pictures displayed from the first pixel area to the nth pixel area, which is beneficial to improving the yield of the display panel 110 and saving the time and resources for compensating the display panel 110.

In other embodiments of the present application, referring to fig. 10, fig. 10 is a schematic circuit diagram of a pixel area of a display device according to a second embodiment of the present application. Each pixel region includes a first sub-pixel region PB1 to an mth sub-pixel region PBm, where m is a positive integer. The first sub-pixel region PB1 to the m-th sub-pixel region PBm extend along the first direction 001, and the first sub-pixel region PB1 to the m-th sub-pixel region PBm are sequentially arranged along the second direction 002. The image obtaining module 210 is configured to obtain a y-th debug feature image according to a y-th debug frame displayed in the y-th sub-pixel region PBy, and send the y-th debug feature image to the image processing module 220, where y is greater than or equal to 1 and less than or equal to m, and y is a positive integer. The image processing module 220 is configured to obtain a y-th debug data table according to the y-th debug feature image, and send the y-th debug data table to the frame compensation module 230. The picture compensation module 230 stores a preset target data table, and the picture compensation module 230 is configured to obtain a y compensation data set according to the y debugging data table and the target data table, and send the y compensation data set to the data driving circuit 120, so that the data driving circuit compensates the brightness of the picture displayed in the y sub-pixel area according to the y compensation data set.

It should be noted that, the first compensation data set to the nth compensation data set include first compensation data set to the nth compensation data set, that is, the first compensation data set includes first compensation data set to the nth compensation data set, the second compensation data set includes first compensation data set to the nth compensation data set, … …, the xth compensation data set includes first compensation data set to the nth compensation data set, … …, and the nth compensation data set includes first compensation data set to the yth compensation data set. The data lines 112 electrically connected to the first to mth sub-pixel regions PB1 to PBm are identical.

In other embodiments of the present application, the image obtaining module 210 may obtain a plurality of debug feature images at the same time, the image processing module 220 may obtain a plurality of debug data tables according to a plurality of debug feature images, and the picture compensating module 230 may obtain a plurality of compensation data sets at the same time.

The number of the sub-pixels included in the sub-pixel region is not limited to the number shown in fig. 10, and the number of the sub-pixels included in each sub-pixel region is not particularly limited in the present application. The number of the sub-pixels of each sub-pixel region may be determined according to the processing performance of the picture compensation apparatus 200, for example, each sub-pixel region may include 3, 6, 30, 81, 150, 240, 900 sub-pixels, or other numbers. A plurality of the subpixels of the subpixel region may be distributed in a plurality of rows and columns.

In other embodiments of the present application, the picture compensation device 200 further includes a display control module 240, where the display control module 240 is electrically connected to the data driving circuit 120, and the display control module 240 is configured to output a display data set to the data driving circuit 120, and the data driving circuit 120 controls the first sub-pixel PB1 to display a first debug picture according to the display data set. The display control module 240 is further electrically connected to the picture compensation module 230, the picture compensation module 230 sends the y compensation data set to the display control module 240, and the display control module 240 sends the y compensation data set and the display data set to the data driving circuit 120, so that the data driving circuit 120 controls the y+1st sub-pixel area to display the y+1st debug picture according to the y compensation data set and the display data set, wherein y is greater than or equal to 1 and less than or equal to m-1.

It may be understood that, for example, the data driving circuit 120 controls the first sub-pixel PB1 to display a first debug picture according to the display data set, the picture compensation module 230 obtains a first compensation data set, and the data driving circuit 120 stores the first compensation data set and compensates the brightness of the picture displayed in the first sub-pixel PB1 according to the first compensation data set. The display control module 240 receives the first compensation data set sent by the picture compensation module 230, sends the first compensation data set and the display data set to the data driving circuit 120, and the data driving circuit 120 controls the second sub-pixel PB2 to display the second debug picture according to the first compensation data set and the display data set. Since the first sub-pixel PB1 is adjacent to the second sub-pixel PB2, and there is a case where the charging rates of the plurality of pixel units in the first sub-pixel PB1 are identical to the charging rates of the plurality of pixel units in the second sub-pixel PB2, the first compensation data set may be used as a second compensation data set, that is, the RGB values in the second compensation data set are identical to the RGB values in the first compensation data set, and the data driving circuit 120 causes the second sub-pixel PB2 to display the target picture according to the first compensation data set and the display data set, that is, compensates the brightness of the picture displayed in the second sub-pixel PB2, so that the picture compensating device 200 compensates the second sub-pixel PB 2. The above technical effects are also applicable to the display control module 240 controlling the y+1th sub-pixel area pby+1 to display the y+1th sampling frame according to the y-th compensation data set and the display data set through the data driving circuit 120, wherein y is greater than or equal to 1 and less than or equal to m-1, and the application is not repeated.

If the RGB values in the y+1-th debug data table are inconsistent with the RGB values in the target data table, the picture compensation module 230 obtains a y+1-th compensation data set according to the y+1-th debug data table and the target data table, and the data driving circuit 120 compensates the brightness of the picture displayed in the y+1-th sub-pixel region pby+1 according to the y-th compensation data set and the y+1-th compensation data set.

As another embodiment of the present invention, each of the pixel regions includes a first sub-pixel region PB1 to an mth sub-pixel region PBm, m being a positive integer. Each sub-pixel region includes a plurality of rows of sub-pixels (e.g., 1 row, 2 rows, 3 rows.) the first sub-pixel region PB1 to the m-th sub-pixel region PBm each extend along the first direction 001, and the first sub-pixel region PB1 to the m-th sub-pixel region PBm are sequentially disposed along the second direction 002.

The image obtaining module 210 is configured to obtain a debug feature image of any row of subpixels according to a y-th debug frame displayed in the y-th subpixel area PBy; and sends the debug feature image of any row of sub-pixels to the image processing module 220, wherein y is greater than or equal to 1 and less than or equal to m, and y is a positive integer. The image processing module 220 is configured to obtain a debug data table of the corresponding row of sub-pixels according to the debug feature image of any row of sub-pixels in the y sub-pixel region; the debug data table of the other row of sub-pixels in the y-th sub-pixel area takes the debug data table of any row of sub-pixels as the debug data table, so that the debug data table of the y-th sub-pixel area is formed, only one row of data is needed to be processed in each sub-pixel area by the method, the data processing amount is greatly reduced, the data processing time is saved, and the efficiency is improved; and transmits the y-th debug data table to the picture compensation module 230. The picture compensation module 230 stores a preset target data table, and the picture compensation module 230 is configured to obtain a y compensation data set according to the y debugging data table and the target data table, and send the y compensation data set to the data driving circuit 120, so that the data driving circuit compensates the brightness of the picture displayed in the y sub-pixel area according to the y compensation data set.

Assuming that each sub-pixel area comprises e rows of sub-pixels, and assuming that e is 3, only a second row of sub-pixel image and data of each sub-pixel area need to be processed, so that a second row of debugging data table of the sub-pixel area is obtained, the first row and the third row of sub-pixels directly follow the second row of debugging data table of the sub-pixels, so that the debugging data table of the sub-pixel area is obtained quickly, the processing time is greatly saved, meanwhile, the second row is located at a central position, the difference between the data of the first row and the data of the third row and the second row is very small, therefore, the debugging data table of the sub-pixel area is very close to the debugging data table obtained by processing each row of sub-pixels, the error is very small, the processing time is short, and the efficiency is high.

After the data of a plurality of sub-pixel areas (including debugging data table, compensation data group and the like) of a certain pixel area are obtained by the method, the compensation data table of the pixel area is obtained, and then the pixel area is compensated and displayed by a data driving circuit, so that the brightness of the pixel area after compensation is obtained. If the difference between the brightness after the pixel area compensation and the brightness of the target pixel area is less than or equal to 10%, the brightness of the two sub-pixel areas can be basically the same by default, the brightness after the pixel area compensation is the subsequent display brightness, and the compensation data (such as the compensation data group) is the corrected compensation data. If the difference between the brightness of the pixel area after compensation and the brightness of the target pixel area is greater than 10%, the picture compensation device 200 re-compensates the brightness of the pixel area until the calculated or obtained compensation data (such as compensation data set) make the brightness of the pixel area consistent with the brightness of the target pixel area (i.e. the difference between the brightness of the pixel area after compensation and the brightness of the target pixel area is less than or equal to 10%). Therefore, under the condition of sacrificing part of brightness errors, the compensation efficiency is improved, so that the panel can be rapidly compensated to better uniformity, and meanwhile, the display effect is better.

In this embodiment, in order to solve the problem of insufficient uniformity when the panel leaves the factory, to make the picture compensate quickly, to achieve better uniform line, the brightness of each pixel region may be compared first, and a certain pixel region in a maximum number of several pixel regions near a certain brightness value (such as a Z brightness value) is used as a target pixel region, and the brightness compensation is performed on the pixel regions with other brightness by using the above method, so that the Z brightness value of other pixel regions can be achieved quickly; in addition, the pixel areas near the Z brightness value are not compensated, only the pixel areas with large deviation between the brightness and the Z brightness value are required to be compensated, the number of the pixel areas required to be compensated is reduced, and the compensation efficiency is further improved.

Based on the same inventive concept, the embodiment of the present application further provides a picture compensation method, which is applied to the picture compensation device 200 shown in fig. 2, and the description of the same points as those of the picture compensation device 200 is referred to the description of the picture compensation device 200 and the contents shown in fig. 3 to 9, and is not repeated herein. Referring to fig. 11, fig. 11 is a flowchart of a picture compensation method according to a third embodiment of the present application, and the picture compensation method may include the following steps.

S10, providing a display panel 110, wherein the display panel 110 includes a first pixel region PR1 to an n-th pixel region PRn.

Specifically, as shown in fig. 2, the display panel 110 and the data driving circuit 120 are electrically connected, the display panel 110 includes a first pixel region PR1 to an n-th pixel region PRn, the data driving circuit 120 is electrically connected to each sub-pixel of the first pixel region PR1 through a data line 112, the data driving circuit 120 is electrically connected to each sub-pixel of the second pixel region PR2 through a data line 112, … …, and the data driving circuit 120 is electrically connected to each sub-pixel of the n-th pixel region PRn through a data line 112.

S20, controlling the x-th pixel area PRx to display an x-th sampling picture, wherein x is more than or equal to 1 and less than or equal to n, n is a positive integer, and the specific value of n is determined by the resolution of the display panel 110.

Specifically, when x=1, the first pixel region PR1 of the display panel 110 is controlled to display a first sampling screen according to the display data set by the data driving circuit 120. When x is equal to or greater than 2 and is equal to or less than n, the data driving circuit 120 controls the x pixel area PRx to display the x sampling picture according to the x-1 compensation data set and the display data set.

S30, obtaining an x-th sampling characteristic image according to the x-th sampling picture.

Specifically, as shown in fig. 2, the image acquisition module 210 obtains a corresponding x-th sampling feature image according to the x-th sampling frame, and sends the x-th sampling feature image to the image processing module 220.

S40, obtaining an x-th sampling data table according to the x-th sampling characteristic image.

Specifically, as shown in fig. 2, the image processing module 220 generates the x-th sampling data table according to the coordinates and RGB values of each pixel of the x-th sampling feature image to obtain the x-th sampling feature image, and sends the x-th sampling data table to the frame compensation module 230.

S50, obtaining an x compensation data set according to the x sampling data table and a preset target data table, wherein the target data table is obtained according to a target picture.

Specifically, as shown in fig. 2, the frame compensation module 230 stores a preset target data table, and the frame compensation module 230 obtains an xth compensation data set according to the xth sampling data table and the target data table, and sends the xth compensation data set to the data driving circuit 120. The x-th sampling picture is the same as the target picture in display content, and the brightness of the x-th sampling picture can be the same as or different from the brightness of the target picture.

S60, compensating the brightness of the picture displayed in the x-th pixel area PRx to the brightness of the target picture according to the x-th compensation data set and a preset display data set.

Specifically, the data driving circuit 120 compensates the brightness of the frame displayed in the x-th pixel region PRx to the brightness of the target frame according to the x-th compensation data set and a preset display data set. The data driving circuit 120 stores the x-th compensation data set to compensate for brightness of a displayed picture of the x-th pixel region PRx of the display panel 110 when the display panel 110 normally displays.

In an embodiment of the present application, the step S50 of obtaining the x-th compensation data set according to the x-th sampling data table and a preset target data table includes:

s51, judging whether a plurality of RGB values of the x-th sampling data table are identical to a plurality of RGB values of the target data table. And if the RGB values of the x-th sampling data table are the same as the RGB values of the target data table, obtaining the x-compensation data set with zero compensation RGB values.

In an exemplary embodiment, if the RGB values of the x-th sampling data table are different from the RGB values of the target data table, the step S50 further includes:

S52, obtaining the x compensation data set with the compensation RGB value not being zero according to the x sampling data table and the target data table.

In summary, the picture compensation method provided by the embodiment of the application includes: a display panel 110 providing electrical connection, the display panel 110 including first to nth pixel regions PR1 to PRn; controlling an x-th pixel area PRx to display an x-th sampling picture, wherein x is more than or equal to 1 and less than or equal to n; obtaining an x-th sampling characteristic image according to the x-th sampling picture; obtaining an x-th sampling data table according to the x-th sampling characteristic image; obtaining an x compensation data set according to the x sampling data table and a preset target data table, wherein the target data table is obtained according to a target picture; and compensating the brightness of the picture displayed by the x-th pixel region PRx to the brightness of the target picture according to the x-th compensation data set and a preset display data set. In the prior art, the x-th pixel region PRx can display the target picture only when the sub-pixels are sufficiently charged. The present application also enables the x-th pixel region PRx to display the target picture under the condition of insufficient charging of the sub-pixels, so that the technical scheme of the present application implements compensation of the brightness of the picture displayed by the display panel 110, and further enables the brightness of the display panel 110 to be uniform.

The flow chart described in the present application is merely one embodiment, and many modifications may be made to this illustration or the steps in the present application without departing from the spirit of the application. For example, the steps may be performed in a differing order, or steps may be added, deleted or modified. Those skilled in the art will recognize that the full or partial flow of the embodiments described above can be practiced and equivalent variations of the embodiments of the present application are within the scope of the appended claims.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the application is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims. Those skilled in the art will recognize that the full or partial flow of the embodiments described above can be practiced and equivalent variations of the embodiments of the present application are within the scope of the appended claims.

Claims

1. The picture compensating device is electrically connected with a data driving circuit, the data driving circuit is electrically connected with a display panel, the display panel comprises a first pixel area and an nth pixel area, n is a positive integer, and the picture compensating device is characterized by comprising an image acquisition module, an image processing module and a picture compensating module electrically connected with the data driving circuit, wherein the image processing module is respectively electrically connected with the image acquisition module and the picture compensating module; wherein,

the image acquisition module is used for acquiring an x-th sampling characteristic image according to an x-th sampling picture displayed in an x-th pixel area and sending the x-th sampling characteristic image to the image processing module, wherein x is more than or equal to 1 and less than or equal to n, and x is a positive integer;

The image processing module is used for acquiring an x-th sampling data table according to the x-th sampling characteristic image and sending the x-th sampling data table to the picture compensation module;

the picture compensation module is used for obtaining an x-th compensation data set according to the x-th sampling data table and the target data table, and sending the x-th compensation data set to the data driving circuit so that the data driving circuit compensates the brightness of a picture displayed in the x-th pixel area according to the x-th compensation data set.

2. The picture compensation apparatus of claim 1, wherein each of the pixel regions comprises a first sub-pixel region to an mth sub-pixel region, m being a positive integer,

the image acquisition module is used for acquiring a y-th debugging feature image according to a y-th debugging picture displayed in a y-th sub-pixel area and sending the y-th debugging feature image to the image processing module, wherein y is more than or equal to 1 and less than or equal to m, and y is a positive integer;

the image processing module is used for acquiring a y-th debugging data table according to the y-th debugging characteristic image and sending the y-th debugging data table to the picture compensation module;

The picture compensation module is used for obtaining a y compensation data set according to the y debugging data table and the target data table, and sending the y compensation data set to the data driving circuit, and the data driving circuit compensates the brightness of the picture displayed in the y sub-pixel area according to the y compensation data set.

3. The picture compensation apparatus of claim 2, further comprising a display control module electrically connected to the data driving circuit, the display control module configured to output a display data set to the data driving circuit, the data driving circuit controlling the first subpixel region to display a first debug picture according to the display data set;

the display control module is further electrically connected with the picture compensation module, the picture compensation module sends the y compensation data set to the display control module, the display control module sends the y compensation data set and the display data set to the data driving circuit, and the data driving circuit controls the y+1st sub-pixel area to display the y+1st debugging picture according to the y compensation data set and the display data set, wherein y is more than or equal to 1 and less than or equal to m-1;

And if the RGB values in the y+1 debugging data table are inconsistent with the RGB values in the target data table, the picture compensation module obtains a y+1 compensation data set according to the y+1 debugging data table and the target data table, and the data driving circuit compensates the brightness of the picture displayed in the y+1 sub-pixel area according to the y compensation data set and the y+1 compensation data set.

4. The picture compensation apparatus of claim 1, further comprising a display control module electrically connected to the data driving circuit, the display control module configured to output a display data set to the data driving circuit, the data driving circuit controlling the first pixel region to display a first sampled picture according to the display data set;

the display control module is further electrically connected with the picture compensation module, the picture compensation module sends the x-th compensation data set to the display control module, and the display control module sends the x-th compensation data set and the display data set to the data driving circuit, so that the data driving circuit controls the x+1th pixel area to display the x+1th sampling picture according to the x-th compensation data set and the display data set, wherein x is more than or equal to 1 and less than or equal to n-1;

And if the RGB values in the x+1 sampling data table are inconsistent with the RGB values in the target data table, the picture compensation module obtains an x+1 compensation data set according to the x+1 sampling data table and the target data table, and the data driving circuit compensates the brightness of the picture displayed in the x+1 pixel area according to the x compensation data set and the x+1 compensation data set.

5. The picture compensation apparatus according to claim 1, wherein the picture compensation module includes a judgment unit and a calculation unit, the judgment unit being electrically connected to the image processing module and the calculation unit, respectively, the judgment unit and the calculation unit each storing the target data table;

the image processing module sends the x-th sampling data table to the judging unit, and the judging unit is used for judging whether a plurality of RGB values of the x-th sampling data table are identical to a plurality of RGB values of the target data table or not;

if the RGB values of the x-th sampling data table are the same as the RGB values of the target data table, the computing unit acquires the x-compensation data set with zero compensation RGB values;

and if the RGB values of the x-th sampling data table are different from the RGB values of the target data table, the calculating unit obtains the x-compensation data set with the compensation RGB values not being zero according to the x-th sampling data table and the target data table.

6. A picture compensation method applied to a picture compensation apparatus as claimed in any one of claims 1 to 5, the picture compensation method comprising:

providing a display panel, wherein the display panel comprises a first pixel area and an nth pixel area;

controlling an x-th pixel area to display an x-th sampling picture, wherein x is more than or equal to 1 and less than or equal to n, and n is a positive integer;

obtaining an x-th sampling characteristic image according to the x-th sampling picture;

obtaining an x-th sampling data table according to the x-th sampling characteristic image;

obtaining an x compensation data set according to the x sampling data table and a preset target data table, wherein the target data table is obtained according to a target picture;

and compensating the brightness of the picture displayed in the x-th pixel area to the brightness of the target picture according to the x-th compensation data set and a preset display data set.

7. The picture compensation method of claim 6, wherein when x = 1, controlling a first pixel region of the display panel to display a first sampled picture according to the display data set;

when x is more than or equal to 2 and less than or equal to n, controlling the x pixel area to display the x sampling picture according to the x-1 compensation data set and the display data set.

8. The picture compensation method of claim 6, wherein the obtaining the x-th compensation data set according to the x-th sampling data table and a predetermined target data table comprises:

And judging whether a plurality of RGB values of the x-th sampling data table are identical to a plurality of RGB values of the target data table.

9. The picture compensation method as claimed in claim 8, wherein if the plurality of RGB values of the x-th sample data table are the same as the plurality of RGB values of the target data table, obtaining the x-compensation data set with compensation RGB values of zero; or,

if the RGB values of the x-th sampling data table are different from the RGB values of the target data table, obtaining an x-th compensation data set according to the x-th sampling data table and a preset target data table, and further including:

and obtaining the x compensation data group with the compensation RGB value not being zero according to the x sampling data table and the target data table.

10. A display device comprising a display panel and a data driving circuit electrically connected, wherein the data driving circuit stores an x-th compensation data set obtained by the picture compensation device according to any one of claims 1 to 5, and the data driving circuit compensates the brightness of a picture displayed in an x-th pixel region of the display panel according to the x-th compensation data set.