Granted Patent B2

US 12,505,784 · App. 18/021,927 · Granted Dec 23, 2025

Inventors: Xian Wang (Beijing, CN); Ran Duan (Beijing, CN); Yanhong Wu (Beijing, CN); Youxiang Xia (Beijing, CN)

Assignee: Beijing BOE Technology Development Co., Ltd.

G09G3/32G09G3/006G09G3/2007G09G3/2092G09G2320/0257G09G2320/041G09G2320/0666G09G2330/12

Abstract

Claims (58)

1 . A screen control method applied to a controller of a Mini LED screen, comprising:

acquiring a temperature and a gray scale of the Mini LED screen;

confirming that there is a sticking image on the Mini LED screen when the temperature exceeds a stable temperature range corresponding to the gray scale; and

controlling the Mini LED screen to adjust a red-pixel value according to the temperature to eliminate the sticking image, wherein

the controlling of the Mini LED screen to adjust the red-pixel value according to the temperature comprises:

calculating a temperature variation amount according to the temperature and the stable temperature range corresponding to the gray scale;

querying a red-pixel compensation amount corresponding to a temperature variation amount in a red-pixel compensation amount corresponding relationship corresponding to the gray scale; and

controlling the Mini LED screen to adjust a red-pixel value of a pixel point according to the red-pixel compensation amount;

the temperature comprises area temperatures of different screen areas in the Mini LED screen, and

the controlling of the Mini LED screen to adjust the red-pixel value of the pixel point according to the red-pixel compensation amount comprises:

calculating a red-pixel compensation amount of each pixel point in a screen area according to a temperature diffusion coefficient; and

adjusting a red-pixel value of the each pixel point according to the corresponding red-pixel compensation amount.

2 . The method according to claim 1 , wherein the confirming that there is the sticking image on the Mini LED screen when the temperature exceeds the stable temperature range corresponding to the gray scale comprises:

acquiring the area temperatures of the different screen areas in the Mini LED screen, and calculating area average gray scales of the different screen areas;

querying a stable temperature range corresponding to an area average gray scale of each of the screen areas; and

confirming that there is a sticking image in a screen area corresponding to an area temperature when the area temperature exceeds the stable temperature range corresponding to the area average gray scale.

3 . The method according to claim 1 , wherein the red-pixel compensation amount corresponding relationship is obtained by following steps:

adjusting the Mini LED screen in an adjustable gray scale range;

adjusting the red-pixel value of the Mini LED screen to eliminate the sticking image when sticking image occurs on the Mini LED screen;

recording a gray scale and a temperature variation amount when the sticking image occurs on the Mini LED screen and the red-pixel compensation amount for performing eliminating the sticking image to the Mini LED screen; and

establishing a corresponding relationship between the temperature variation amount and the red-pixel compensation amount to obtain the red-pixel compensation amount corresponding relationship corresponding to the gray scale.

4 . The method according to claim 1 , wherein the temperature diffusion coefficient is obtained by following steps:

when the Mini LED screen comprises a plurality of splicing screens, a reference temperature diffusion coefficient is adjusted according to a positional relationship between different splicing screens and a size of a splicing gap so as to obtain a temperature diffusion coefficient of each splicing screen, and the reference temperature diffusion coefficient is a temperature diffusion coefficient when the splicing screens are not spliced.

5 . A display apparatus, comprising: a display panel and a controller;

wherein the display panel is provided with a temperature sensor, and the temperature sensor is configured for sending a temperature of the display panel to the controller; and

the controller is configured for executing the screen control method according to claim 1 .

6 . The display apparatus according to claim 5 , wherein the confirming that there is the sticking image on the Mini LED screen when the temperature exceeds the stable temperature range corresponding to the gray scale comprises:

acquiring area temperatures of different screen areas in the Mini LED screen, and calculating area average gray scales of the different screen areas;

querying a stable temperature range corresponding to the area average gray scale of each of the screen areas; and

confirming that there is the sticking image in the screen area corresponding to the area temperature when the area temperature exceeds the stable temperature range corresponding to the area average gray scale.

7 . The display apparatus according to claim 5 , wherein the red-pixel compensation amount corresponding relationship is obtained by following operations:

adjusting the Mini LED screen in an adjustable gray scale range;

adjusting the red-pixel value of the Mini LED screen to eliminate the sticking image when sticking image occurs on the Mini LED screen;

recording a gray scale and a temperature variation amount when the sticking image occurs on the Mini LED screen and the red-pixel compensation amount for performing eliminating the sticking image to the Mini LED screen; and

establishing a corresponding relationship between the temperature variation amount and the red-pixel compensation amount to obtain the red-pixel compensation amount corresponding relationship corresponding to the gray scale.

8 . The display apparatus according to claim 5 , wherein the temperature diffusion coefficient is obtained by following operations:

when the Mini LED screen comprises a plurality of splicing screens, a reference temperature diffusion coefficient is adjusted according to a positional relationship between different splicing screens and a size of a splicing gap so as to obtain a temperature diffusion coefficient of each splicing screen, and the reference temperature diffusion coefficient is a temperature diffusion coefficient when the splicing screens are not spliced.

9 . A computing processing device, comprising:

a memory with a computer-readable code stored therein;

one or more processors, the computing processing device executing the screen control method according to claim 1 when the computer-readable code is executed by the one or more processors.

10 . A non-transitory computer-readable medium with a computer program of the screen control method according to claim 1 stored therein.

11 . A screen control method applied to a controller of a Mini LED screen, comprising:

acquiring a temperature and a gray scale of the Mini LED screen;

confirming that there is a sticking image on the Mini LED screen when the temperature exceeds a stable temperature range corresponding to the gray scale; and

controlling the Mini LED screen to adjust a red-pixel value according to the temperature to eliminate the sticking image;

controlling the Mini LED screen to adjust the red-pixel value according to the temperature comprises:

calculating a temperature variation amount according to the temperature and the stable temperature range corresponding to the gray scale;

querying a red-pixel compensation amount corresponding to a temperature variation amount in a red-pixel compensation amount corresponding relationship corresponding to the gray scale; and

controlling the Mini LED screen to adjust a red-pixel value of a pixel point according to the red-pixel compensation amount, wherein

the temperature comprises pixel point temperatures of different pixel points in the Mini LED screen,

the controlling of the Mini LED screen to adjust the red-pixel value of the pixel point according to the red-pixel compensation amount comprises adjusting a red-pixel value of each pixel point according to a red-pixel compensation amount corresponding to a pixel point temperature of the each pixel point, and

the confirming that there is the sticking image on the Mini LED screen when the temperature exceeds the stable temperature range corresponding to the gray scale comprises:

calculating the pixel point temperatures of the different pixel points in the Mini LED screen according to the temperature and a temperature diffusion coefficient;

querying a stable temperature range corresponding to a pixel gray scale of each of the pixel points; and

confirming that a pixel point corresponding to a pixel point temperature has a sticking image when the pixel point temperature exceeds the stable temperature range corresponding to a pixel gray scale of the pixel point corresponding to the pixel point temperature.

12 . A display apparatus, comprising a display panel and a controller, wherein

the display panel is provided with a temperature sensor, and the temperature sensor is configured for sending a temperature of the display panel to the controller, and

the controller is configured for executing the screen control method according to claim 11 .

Assignments (3)

Continuity (1)

References Cited (13)