US-12626632-B2 - Tiled display screen, display method thereof, display system, computer device and medium

US12626632B2US 12626632 B2US12626632 B2US 12626632B2US-12626632-B2

Abstract

A tiled display screen, a display method, a tiled display system, a computer device, a computer non-transitory readable storage medium are provided. The tiled display screen includes: a plurality of display modules each including a receiver, a processor, and at least one display panel. the processor is configured to acquire heat accumulation data of each display region in the display module; determining target gray-scale compensation data of each pixel according to the heat accumulation data, a heat influence coefficient among different display regions, first gray-scale data of the pixel corresponding to the data to be displayed, and a pre-generated gray-scale compensation table; and compensating a gray scale of the pixel according to the target gray-scale compensation data.

Inventors

Yanhong Wu
Feng Hou
Shuguo Zhang
Xian Wang
Congrui Wu
Ran DUAN
Guannan Chen

Assignees

BOE TECHNOLOGY GROUP CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20221226

Claims (18)

1 . A tiled display screen, comprising: a plurality of display modules, each of the plurality of display modules comprising: a receiver, a processor, and at least one display panel, each of the display panel comprising at least one display region, each of the display region comprising a plurality of pixels; wherein the receiver is configured to receive regional image data, wherein the regional image data at least comprises data to be displayed in each of the display regions in the display module; the processor is configured to: acquire heat accumulation data for each of the display regions in the display module; determine target gray-scale compensation data for each pixel according to the heat accumulation data, a heat influence coefficient between different display regions, first gray-scale data for the pixel corresponding to the data to be displayed, and a pre-generated gray-scale compensation table; and compensate a gray scale of the pixel according to the target gray-scale compensation data; wherein the heat accumulation data represents an accumulated heat influence on the display region of at least one frame of historical image data for the display region-, wherein the processor comprises: a heat acquisition module configured to acquire the heat accumulation data for each of the display regions in the display module; a compensation data determination module configured to determine the target gray-scale compensation data for each pixel according to the heat accumulation data, the heat influence coefficient between the different display regions, the first gray-scale data for the pixel corresponding to the data to be displayed, and the pre-generated gray-scale compensation table; and a compensation module configured to compensate the gray scale of the pixel according to the target gray-scale compensation data, wherein for each of the display regions, the heat acquisition module is specifically configured to determine the heat accumulation data for the display region, according to the at least one frame of historical image data for the display region, a target influence coefficient of each of the at least one frame of historical image data on the data to be displayed, and a pre-determined fitting relation between a gray scale and a temperature rise coefficient.
2 . The tiled display screen of claim 1 , wherein the heat acquisition module comprises: a coefficient determination sub-module configured to: for each of the at least one frame of historical image data, determine a temperature rise coefficient of the display region corresponding to the historical image data, according to second gray-scale data for each pixel corresponding to the historical image data and the fitting relation between the gray scale and the temperature rise coefficient; and a weighting process sub-module configured to weighting the temperature rise coefficients of the display region, according to the target influence coefficient of each of the at least one frame of historical image data on the data to be displayed, so as to acquire the heat accumulation data for the display region.
3 . The tiled display screen of claim 2 , wherein the coefficient determination sub-module comprises: a first determination unit configured to average the second gray-scale data for all pixels in the display region corresponding to the historical image data to acquire averaged gray-scale data for the display region; and a second determination unit configured to determine the temperature rise coefficient of the display region corresponding to the historical image data according to the average gray-scale data and the fitting relation.
4 . The tiled display screen of claim 2 , wherein the coefficient determination sub-module further comprises: a third determination unit configured to: acquire a gray-scale ratio of sub-pixels in each pixel; and determine the second gray-scale data of the pixel according to the gray-scale ratio and pixel information of the sub-pixels of the pixel corresponding to the historical image data.
5 . The tiled display screen of claim 1 , wherein the processor further comprises: a first gray scale determination module configured to acquire a gray-scale ratio of sub-pixels of each pixel corresponding to the data to be displayed; and determine the first gray-scale data for the pixel according to the gray-scale ratio and the pixel information of the sub-pixels of the pixel corresponding to the data to be displayed.
6 . The tiled display screen of claim 5 , further comprising: a first pre-process module configured to respectively lighten up the tiled display screen according to colors of the sub-pixels to acquire temperature variation values of the tiled display screen corresponding to the colors; and take a ratio of the temperature variation values of the tiled display screen corresponding to the colors of the sub-pixels as the gray-scale ratio of the sub-pixels.
7 . The tiled display screen of claim 1 , wherein the compensation data determination module comprises: a first determination sub-module, a second determination sub-module, and a third determination sub-module; the first determination sub-module is configured to take anyone of the display regions as a target display region; and determine a gray-scale compensation coefficient of the target display region, according to the heat influence coefficients and the heat accumulation data for the display regions in a preset region centered on the display panel to which the target display region belongs; the second determination sub-module is configured to determine initial gray-scale compensation data of each pixel, according to the first gray-scale data for each pixel corresponding to the data to be displayed in the target display region and the gray-scale compensation table; and the third determination sub-module is configured to determine the target gray-scale compensation data for each pixel, according to the gray-scale compensation coefficient and the initial gray-scale compensation data.
8 . The tiled display screen of claim 7 , wherein the first determination sub-module is specifically configured to: weighting the heat accumulation data for the display regions in the preset region, according to the heat influence coefficients of the display regions in the preset region, so as to acquire the gray-scale compensation coefficient of the target display region.
9 . The tiled display screen of claim 7 , wherein the regional image data further comprises data to be displayed for at least a part of the display regions in an adjacent display module; and the data to be displayed in each display region in the preset region centered on anyone of the display panels of the display module is comprised in the regional image data.
10 . The tiled display screen of claim 1 , wherein the display module further comprises a second pre-process module configured to control the tiled display screen to display each of the target gray scales in a preset range of gray scale, and controlling the tiled display screen to display each of the target gray scales comprises: controlling a first region of the tiled display screen to display an image with a maximum gray scale and controlling a second region of the tiled display screen to display an image with a minimum gray scale; after a temperature of the tiled display screen is stable, controlling the first region to display with the target gray scale and controlling the second region to display with correction gray scale, such that a brightness of the first region is the same as a brightness of the second region; wherein a difference value between the target gray scale and the correction gray scale is served as initial gray-scale compensation data; the gray-scale compensation table comprises each of the target gray scales in the preset range of gray scale and the initial gray-scale compensation data corresponding to the target gray scale.
11 . The tiled display screen of claim 7 , further comprising a third pre-process module configured to: select one of the display panels in the tiled display screen as a reference display panel; acquire an initial temperature of the reference display panel before the reference display panel is lightened up; lighten up the reference display panel with a test gray scale to acquire a current temperature of each of Q×Q display regions centered on the reference display panel; take a difference value between the current temperature and the initial temperature of the display region as a temperature variation value of the display region; and normalize a ratio of the temperature variation value for each of the Q×Q display regions and a maximum temperature variation value to acquire a filtering parameter matrix, with the filtering parameter matrix comprising the heat influence coefficients of all display regions in the preset region.
12 . The tiled display screen of claim 1 , wherein the display module further comprises a fourth pre-process module configured to: control the tiled display screen to display each of the target gray scales in a preset range of gray scale to acquire the temperature rise value of the tiled display screen corresponding to each of the target gray scales; acquire the temperature rise coefficient of the tiled display screen corresponding to each of the target gray scales, wherein the temperature rise coefficient is a ratio of the temperature rise value to a maximum temperature rise value; and determine the fitting relation between the gray scale and the temperature rise coefficient, according to the temperature rise coefficient of the tiled display screen corresponding to each of the target gray scales.
13 . The tiled display screen of claim 1 , further comprising a fifth pre-process module and a sixth pre-process module; wherein the fifth pre-process module is configured to acquire a time interval immediately after which the visible residual image begins to appear; and determine a number of images displayed during the time interval according to a frame rate of the tiled display screen; and the sixth pre-process module is configured to: acquire multiple frames of test image data and a preset initial influence coefficient of each of the multiple frames of test image data, according to the number of the images displayed during the time interval; wherein a sum of the initial influence coefficients is 1; the initial influence coefficient of a previous frame of test image data is greater than or equal to the initial influence coefficient of a next frame of test image data; acquire a first increased temperature of the tiled display screen after the tiled display screen plays the multiple frames of test image data; weight the pixel information of each pixel corresponding to each frame of test image data according to each of the initial influence coefficients to acquire third gray-scale data; lighten the tiled display screen with the third gray-scale data for a lightening duration which is the same as a duration for playing the multiple frames of test image data, and acquire a second increased temperature of the tiled display screen after the lightening duration elapses; and in response to that a difference between the first increased temperature and the second increased temperature does not meet a preset condition, update the initial influence coefficient until the difference between the first increased temperature and the second increased temperature meets a second preset condition; and take the updated initial influence coefficient as the target influence coefficient.
14 . The tiled display screen of claim 13 , wherein the fifth pre-process module is specifically configured to: lighten a first region of the tiled display screen with a first gray scale and lighten a second region of the tiled display screen with a second gray scale; and lighten the first region and the second region with the second gray scale simultaneously every a target duration, so as to acquire the time interval immediately after which the visible residual image begins to appear.
15 . The tiled display screen of claim 13 , wherein the sixth pre-process module is specifically configured to update the target influence coefficient by: for each of the initial influence coefficients, respectively adjusting the initial influence coefficients corresponding to the previous frame of test image data and the next frame of test image data, such that the initial influence coefficient of the adjusted previous frame of test image data is larger than the initial influence coefficient of the previous frame of test image data before adjustment, and the initial influence coefficient of the adjusted next frame of test image data is smaller than the initial influence coefficient of the next frame of test image data before adjustment.
16 . A tiled display system, comprising: the tiled display screen of claim 1 ; and a transmitter configured to transmit the regional image data to each of the display modules according to the image data of the image to be displayed.
17 . A display method of a tiled display screen comprising a plurality of display modules, wherein the display method comprises: receiving, by each of the plurality of display modules, regional image data, wherein the regional image data at least comprises data to be displayed in each of display regions in the display module; acquiring, by the display module, heat accumulation data of each of the display regions; determining target gray-scale compensation data of each pixel according to the heat accumulation data, a heat influence coefficient between different display regions, first gray-scale data of the pixel corresponding to the data to be displayed, and a pre-generated gray-scale compensation table; and compensating a gray scale of the pixel according to the target gray-scale compensation data; wherein the heat accumulation data represents an accumulated heat influence on the display region of at least one frame of historical image data of the display region-, wherein acquiring, by the display module, the heat accumulation data for each of the display regions in the display module, comprises: determining the heat accumulation data for the display region, according to the at least one frame of historical image data for the display region, a target influence coefficient of each of the at least one frame of historical image data on the data to be displayed, and a pre-determined fitting relation between a gray scale and a temperature rise coefficient.
18 . A computer-non-transitory readable storage medium with a computer program stored thereon which is configured to, when being run by the processor, cause the processor to perform the display method of claim 17 .

Description

FIELD OF THE PRESENT DISCLOSURE The present disclosure relates to the technical field of display, in particular, to a tiled display screen, a display method thereof, a tiled display system, a computer device and a computer non-transitory readable storage medium. BACKGROUND OF THE PRESENT DISCLOSURE When a Micro light-emitting diode (Micro-LED/Mini-LED) tiled screen based on the miniaturization and matrixing technology of light-emitting diodes (LEDs) lights to display an image with a certain gray scale for a long time, a regional temperature difference occurs. Since the luminous efficiency of the screen decreases with the increase in temperature, visual residual images occur when the display images of the screen are switched, therefore elimination of the visual residual images in the screen and the optimization of the display effect of the screen become problems to be solved urgently in the field of display screens at present. SUMMARY OF THE PRESENT DISCLOSURE In order to solve at least one of the problems to be solved in the art, the present disclosure provides a tiled display screen, a display method thereof, a tiled display system, a computer device and a computer non-transitory readable storage medium. As a first aspect, the present disclosure provides a tiled display screen, including: a plurality of display modules, each of the plurality of display modules comprising: a receiver, a processor, and at least one display panel, each of the display panel comprising at least one display region, each of the display region comprising a plurality of pixels. The receiver is configured to receive regional image data, wherein the regional image data at least comprises data to be displayed in each of the display regions in the display module; the processor is configured to: acquire heat accumulation data for each of the display regions in the display module; determine target gray-scale compensation data for each pixel according to the heat accumulation data, a heat influence coefficient between different display regions, first gray-scale data for the pixel corresponding to the data to be displayed, and a pre-generated gray-scale compensation table; and compensate a gray scale of the pixel according to the target gray-scale compensation data; wherein the heat accumulation data represent an accumulated heat influence on the display region of at least one frame of historical image data for the display region. In some embodiments, the processor includes: a heat acquisition module configured to acquire the heat accumulation data for each of the display regions in the display module; a compensation data determination module configured to determine the target gray-scale compensation data for each pixel according to the heat accumulation data, the heat influence coefficient between the different display regions, the first gray-scale data for the pixel corresponding to the data to be displayed, and the pre-generated gray-scale compensation table; and a compensation module configured to compensate the gray scale of the pixel according to the target gray-scale compensation data. In some embodiments, for each of the display regions, the heat acquisition module is specifically configured to determine the heat accumulation data for the display region, according to the at least one frame of historical image data for the display region, a target influence coefficient of each of the at least one frame of historical image data on the data to be displayed, and a pre-determined fitting relation between a gray scale and a temperature rise coefficient. In some embodiments, the heat acquisition module includes: a coefficient determination sub-module configured to: for each of the at least one frame of historical image data, determine a temperature rise coefficient of the display region corresponding to the historical image data, according to second gray-scale data for each pixel corresponding to the historical image data and the fitting relation between the gray scale and the temperature rise coefficient; and a weighting process sub-module configured to weighting the temperature rise coefficients of the display region, according to the target influence coefficient of each of the at least one frame of historical image data on the data to be displayed, so as to acquire the heat accumulation data for the display region. In some embodiments, the coefficient determination sub-module includes: a first determination unit configured to average the second gray-scale data for all pixels in the display region corresponding to the historical image data to acquire averaged gray-scale data for the display region; and a second determination unit configured to determine the temperature rise coefficient of the display region corresponding to the historical image data according to the average gray-scale data and the fitting relation. In some embodiments, the coefficient determination sub-module further includes: a third determination unit configured to: a