Display apparatus, method of displaying image, and computer-program product

Patent metadata

Field	Value
Publication number	US-12424167-B2
Application number	US-202318690568-A
Country	US
Kind code	B2
Filing date	May 24, 2023
Priority date	May 24, 2023
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A display apparatus is provided. The display apparatus includes a display panel; a memory; and one or more processors. The memory stores computer-executable instructions for controlling the one or more processors to detect a region configured to display a static image; in the region configured to display the static image, detect a parameter of driving transistors of subpixels of a first color in first periods, and detect a parameter of driving transistors of subpixels of a second color in second periods; and determine subpixel values of subpixels in a respective pixel in the static image in a respective frame of image comprising the static image. The parameter of driving transistors of subpixels of the first color is detected with a first frequency; the parameter of driving transistors of subpixels of the second color is detected with a second frequency; and the first frequency is higher than the second frequency.

First claim

What is claimed is:

1. A display apparatus, comprising:
a display panel;
a memory; and
one or more processors;
wherein the memory and the one or more processors are connected with each other; and
the memory stores computer-executable instructions for controlling the one or more processors to:
detect a region configured to display a static image;
in the region configured to display the static image, detect a parameter of driving transistors of subpixels of a first color in first periods, and detect a parameter of driving transistors of subpixels of a second color in second periods;
determine subpixel values of subpixels in a respective pixel in the static image in a respective frame of image comprising the static image;
convert the subpixel values of subpixels in the respective pixel in the static image into luminance values of subpixels in the respective pixel in the static image;
reduce a first luminance value of a first subpixel in the respective pixel to a first adjusted luminance value; and
convert the first adjusted luminance value of the first subpixel in the respective pixel in the static image into a first adjusted subpixel value;
wherein the parameter of driving transistors of subpixels of the first color is detected with a first frequency;
the parameter of driving transistors of subpixels of the second color is detected with a second frequency; and
the first frequency is higher than the second frequency.

2. The display apparatus of claim 1 , wherein the memory further stores computer-executable instructions for controlling the one or more processors to cause the display panel to display the static image using subpixel values including the first adjusted subpixel value and the second subpixel value.

3. The display apparatus of claim 2 , wherein the first luminance value of the first subpixel in the respective pixel is reduced by a first luminance difference to obtain the first adjusted luminance value; and
a first ratio of the first luminance difference to the first luminance value is in a range of 1:10 to 9:10.

4. The display apparatus of claim 1 , wherein the memory further stores computer-executable instructions for controlling the one or more processors to:
increase at least a second luminance value of a second subpixel in the respective pixel to a second adjusted luminance value;
convert adjusted luminance values of subpixels in the respective pixel in the static image into adjusted subpixel values of subpixels in the respective pixel in the static image; and
cause the display panel to display the static image using the adjusted subpixel values.

5. The display apparatus of claim 4 , wherein, subsequent to reducing at least the first luminance value of the first subpixel in the respective pixel to the first adjusted luminance value, and increasing at least the second luminance value of the second subpixel in the respective pixel to the second adjusted luminance value, a total luminance value of the subpixels of the respective pixel remains substantially the same.

6. The display apparatus of claim 4 , wherein the first luminance value of the first subpixel in the respective pixel is reduced by a first luminance difference to obtain the first adjusted luminance value;
the second luminance value of the second subpixel in the respective pixel is increased by a second luminance difference to obtain the second adjusted luminance value; and
the second luminance difference is substantially the same as the first luminance difference.

7. The display apparatus of claim 6 , wherein a first ratio of the first luminance difference to the first luminance value is in a range of 9:10 to 1:1.

8. The display apparatus of claim 4 , wherein the first adjusted luminance value is 0.

9. The display apparatus of claim 4 , wherein the first subpixel is a subpixel of a first color, the second subpixel is a subpixel of a second color, the first color being different from the second color.

10. The display apparatus of claim 1 , wherein the memory further stores computer-executable instructions for controlling the one or more processors to:
reduce a third luminance value of a third subpixel in the respective pixel to a third adjusted luminance value;
reduce a fourth luminance value of a fourth subpixel in the respective pixel to a fourth adjusted luminance value;
increase a second luminance value of a second subpixel in the respective pixel to a second adjusted luminance value;
convert the second adjusted luminance value of the second subpixel in the respective pixel in the static image into a second adjusted subpixel value;
convert the third adjusted luminance value of the third subpixel in the respective pixel in the static image into a third adjusted subpixel value;
convert the fourth adjusted luminance value of the fourth subpixel in the respective pixel in the static image into a fourth adjusted subpixel value; and
cause the display panel to display the static image using the first adjusted subpixel value, the second adjusted subpixel value, the third adjusted subpixel value, and the fourth adjusted subpixel value.

11. The display apparatus of claim 10 , wherein the first luminance value of the first subpixel in the respective pixel is reduced by a first luminance difference to obtain the first adjusted luminance value;
the third luminance value of the third subpixel in the respective pixel is reduced by a third luminance difference to obtain the third adjusted luminance value;
the fourth luminance value of the fourth subpixel in the respective pixel is reduced by a fourth luminance difference to obtain the fourth adjusted luminance value;
the second luminance value of the second subpixel in the respective pixel is increased by a second luminance difference to obtain the second adjusted luminance value; and
the second luminance difference is substantially the same as a sum of the first luminance difference, the third luminance difference, and the fourth luminance difference.

12. The display apparatus of claim 11 , wherein a first ratio of the first luminance difference to the first luminance value is substantially the same as a second ratio of the third luminance difference to the third luminance value, and is substantially the same as a third ratio of the fourth luminance difference to the fourth luminance value.

13. The display apparatus of claim 12 , wherein the first ratio, the second ratio, and the third ratio are in a range of 6:10 to 8:10.

14. The display apparatus of claim 10 , wherein the first subpixel is a subpixel of a first color, the second subpixel is a subpixel of a second color, the third subpixel is a subpixel of a third color, and the fourth subpixel is a subpixel of a fourth color; and
the first color, the second color, the third color, and the fourth color are four different colors.

15. The display apparatus of claim 1 , wherein the memory further stores computer-executable instructions for controlling the one or more processors to:
in a first phase, reduce the first luminance value of the first subpixel in the respective pixel to the first adjusted luminance value; increase a second luminance value of a second subpixel in the respective pixel to a second adjusted luminance value;
in the first phase, convert the first adjusted luminance value of the first subpixel in the respective pixel in the static image into the first adjusted subpixel value; convert the second adjusted luminance value of the second subpixel in the respective pixel in the static image into a second adjusted subpixel value; and cause the display panel to display the static image using subpixel v

Assignees

• Hefei Boe Joint Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Huihui
• Yin Pengfei
• Bao Wenchao
• Liu Miao
• Cao Shuyu

Classifications

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G2320/046

  Dealing with screen burn-in prevention or compensation of the effects thereof · CPC title

• G09G2360/16

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

• G09G3/2011

  by amplitude modulation · CPC title

• G09G2320/043

  Preventing or counteracting the effects of ageing · CPC title