Display method and device for splicing display screen, computer device and storage medium

Patent metadata

Field	Value
Publication number	US-12347359-B2
Application number	US-202318705537-A
Country	US
Kind code	B2
Filing date	Apr 28, 2023
Priority date	Jun 30, 2022
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

The present disclosure provides a display method for a splicing display screen, which belongs to the technical field of image display, wherein the splicing display screen includes a plurality of display panels spliced with each other, and the display method includes: determining initial gray-scale compensation data according to first gray-scale data for each pixel in current frame of image data and a pre-generated gray-scale compensation data table; acquiring temperature influence data of current frame of image data, and filtering each temperature influence data according to preset filter parameter information to obtain a gray-scale compensation coefficient; determining target gray-scale compensation data according to the gray-scale compensation coefficient and the initial gray-scale compensation data; and compensating a gray scale of the current frame of image data according to the target gray-scale compensation data to obtain compensated frame of image data.

First claim

What is claimed is:

1. A display method for a splicing display screen comprising a plurality of display panels spliced with each other, wherein the display method comprises:
sampling frames of image data in a sequence of video frames according to a preset sequence; and compensating, each time one frame of image data is sampled, a gray scale of the sampled current frame of image data to obtain the compensated frame of image data; and
the compensating the gray scale of the sampled current frame of image data to obtain the compensated frame of image data, comprises:
determining initial gray-scale compensation data according to first gray-scale data for each pixel in the current frame of image data and a gray-scale compensation data table generated in advance;
acquiring temperature influence data for the current frame of image data, and filtering the temperature influence data according to preset filter parameter information to obtain a gray-scale compensation coefficient;
determining target gray-scale compensation data according to the gray-scale compensation coefficient and the initial gray-scale compensation data; and
compensating the gray scale of the current frame of image data according to the target gray-scale compensation data to obtain the compensated frame of image data.

2. The display method of claim 1 , wherein the acquiring the temperature influence data for the current frame of image data, comprises:
determining, according to at least one frame of history image data, a target influence coefficient of each frame of history image data on the current frame of image data, and attribute information of the splicing display screen, the temperature influence data of the history image data on the current frame of image data; wherein the at least one frame of history image data is at least one frame of image data sampled before the current frame of image data is sampled.

3. The display method of claim 2 , wherein the determining, according to the at least one frame of history image data, the target influence coefficient of each frame of history image data on the current frame of image data, and the attribute information of the splicing display screen, the temperature influence data of the history image data on the current frame of image data, comprises:
weighting second gray-scale data for each pixel in each frame of history image data based on each target influence coefficient to obtain first gray-scale image data; and
processing third gray-scale data for each pixel in the first gray-scale image data according to the attribute information of the splicing display screen and predetermined fitting relationship information between a gray scale and a temperature influence to determine the temperature influence data.

4. The display method of claim 1 , wherein the filtering the temperature influence data according to the filter parameter information to obtain the gray-scale compensation coefficient, comprises:
dividing, according to a number of parameters in the filter parameter information and resolution information of each display panel, each display panel into a plurality of display regions;
determining regional temperature influence data for each display region according to the temperature influence data;
filtering the regional temperature influence data according to the filter parameter information to obtain a regional gray-scale compensation coefficient; and
serving each regional gray-scale compensation coefficient as the gray-scale compensation coefficient of each pixel in the corresponding display region.

5. The display method of claim 1 , further comprising determining the first gray-scale data for each pixel in the current frame of image data, comprising:
acquiring a ratio of gray scales of sub-pixels of each pixel in the current frame of image data; and
determining the first gray-scale data according to the ratio of the gray scales and the pixel information of the sub-pixels.

6. The display method of claim 5 , wherein the acquiring the ratio of the gray scales of the sub-pixels of each pixel in the current frame of image data, comprises:
lighting up the splicing display screen according to colors of the sub-pixels respectively to obtain temperature variation amounts of the splicing display screen for the colors; and
serving a ratio of the temperature variation amounts of the splicing display screen for the colors as the ratio of the gray scales of the sub-pixels.

7. The display method of claim 1 , further comprising determining the gray-scale compensation data table, comprising:
determining, when the splicing display screen is lit up according to a first gray scale, an average temperature of the splicing display screen as a first initial temperature; and traversing through gray scales in a preset gray-scale range at the first initial temperature to determine first luminance information at each of the gray scales;
determining, when the splicing display screen is lit up according to a second gray scale, an average temperature of the splicing display screen as a maximum temperature; traversing through the gray scales in the preset gray-scale range at the maximum temperature to determine second luminance information at each of the gray scales; and
under a condition that the first luminance information and the second luminance information meet a first preset condition, respectively determining a first target gray scale and a second target gray scale, and calculating a difference value between the first target gray scale and the second target gray scale as a compensation gray scale;
wherein the gray-scale compensation data table comprises the compensation gray scales of the gray scales in the preset gray-scale range.

8. The display method of claim 7 , further comprising:
determining a peak luminance variation factor of the splicing display screen according to preset actual peak luminance and measured peak luminance for the second gray scale;
wherein the gray-scale compensation data table further comprises the peak luminance variation factor of the splicing display screen.

9. The display method of claim 8 , wherein the determining the initial gray-scale compensation data according to the first gray-scale data for each pixel in the current frame of image data and the gray-scale compensation data table generated in advance, comprises:
screening out a target compensation gray scale from the gray-scale compensation data table according to the first gray-scale data; and
determining the initial gray-scale compensation data according to the target compensation gray scale and the peak luminance variation factor.

10. The display method of claim 2 , wherein the determining the target influence coefficient of each frame of history image data on the current frame of image data, comprises:
acquiring a time interval when visible image sticking occurs; and determining the number of frames of image data during the time interval according to the number of the frames of image data uploaded per second;
acquiring multiple frames of test image data according to the number of the frames of image data during the time interval and acquiring preset initial influence coefficients of the multiple frames of test image data; wherein a sum of the initial influence coefficients is 1, and the initial influence coefficient of the immediately previous frame of test image data is greater than or equal to the initial influence coefficient of the next frame of test image data;
acquiring a first temperature increased amount of the splicing display screen after playing the multiple frames of test image data;
weighting fourth gray-scale data of each pixel in each frame of the test image data based on each initial influence co

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wu Yanhong
• Wang Xian
• Wu Congrui
• Duan Ran
• Chen Guannan

Classifications

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title

• G09G2320/041

  Temperature compensation · CPC title

• G09G2320/0276

  for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction · CPC title

• G09G3/32

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• G09G3/20

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title