Compensation method and compensation apparatus for display panel, and display apparatus and storage medium

Patent metadata

Field	Value
Publication number	US-12327508-B2
Application number	US-202318509661-A
Country	US
Kind code	B2
Filing date	Nov 15, 2023
Priority date	Apr 21, 2022
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

A compensation method and compensation apparatus for a display panel, a display device and a storage medium. The method includes: with a first display grayscale of a first display region as a reference display grayscale, acquiring a second display grayscale of a second display region after a user adjusts the second display region; determining, according to the first display grayscale and the second display grayscale, a difference coefficient between the second display region and the first display region under a current use duration of the display panel; determining, according to the difference coefficient and a pre-stored display compensation curve of the second display region, a compensation start duration of the second display region, where the display compensation curve is a change curve of a relationship between a use duration of the second display region and a difference coefficient between the second display region and the first display region.

First claim

What is claimed is:

1. A compensation method for a display panel, wherein the display panel comprises a first display region and a second display region, wherein a transmittance of the second display region is different from a transmittance of the first display region; and wherein the compensation method comprises:
with a first display grayscale of the first display region as a reference display grayscale, acquiring a second display grayscale of the second display region after a user adjusts the second display region;
determining, according to the first display grayscale and the second display grayscale, a difference coefficient between the second display region and the first display region under a current use duration of the display panel;
determining, according to the difference coefficient and a pre-stored display compensation curve of the second display region, a compensation start duration of the second display region; wherein the display compensation curve is a change curve of a relationship between a use duration of the second display region and a difference coefficient between the second display region and the first display region;
calculating the difference coefficient through (second display grayscale-first display grayscale)/first display grayscale, and
compensating, according to a use duration of the display panel, the compensation start duration and the display compensation curve, the second display region from a current time.

2. The compensation method according to claim 1 , before acquiring the second display grayscale of the second display region after the user adjusts the second display region with the first display grayscale of the first display region as the reference display grayscale, further comprising:
acquiring a brightness adjustment instruction of the user, and adjusting a display brightness of the second display region according to the brightness adjustment instruction;
acquiring a chrominance adjustment instruction of the user, and adjusting a display chrominance of the second display region according to the chrominance adjustment instruction; and
in response to receiving a confirmation instruction from the user or in response to the user no longer inputting the brightness adjustment instruction and the chrominance adjustment instruction, determining display adjustment to be completed.

3. The compensation method according to claim 1 , wherein determining, according to the difference coefficient and the pre-stored display compensation curve of the second display region, the compensation start duration of the second display region comprises:
looking for a use duration corresponding to the difference coefficient on the display compensation curve of the second display region, and determining the use duration to be the compensation start duration.

4. The compensation method according to claim 1 , wherein compensating, according to the use duration of the display panel, the compensation start duration and the display compensation curve, the second display region from the current time comprises:
determining, according to the compensation start duration and the use duration of the display panel, an actual difference coefficient between the second display region and the first display region corresponding to the use duration;
determining, according to the actual difference coefficient and a to-be-displayed grayscale of the second display region, an actual display grayscale of the second display region; and
adjusting, according to the actual display grayscale, a data drive signal or a light emission control signal of the second display region.

5. The compensation method according to claim 4 , wherein determining, according to the compensation start duration and the use duration of the display panel, the actual difference coefficient between the second display region and the first display region corresponding to the use duration comprises:
determining, according to the compensation start duration and the use duration of the display panel, an actual equivalent use duration, and determining an actual difference coefficient between the second display region and the first display region corresponding to the actual equivalent use duration.

6. The compensation method according to claim 5 , wherein determining, according to the compensation start duration and the use duration of the display panel, the actual equivalent use duration, and determining the actual difference coefficient between the second display region and the first display region corresponding to the actual equivalent use duration comprise:
correcting, according to the compensation start duration, the use duration of the display panel to obtain the actual equivalent use duration, looking for, according to the actual equivalent use duration, a difference coefficient corresponding to the actual equivalent use duration on the display compensation curve, and determining the difference coefficient corresponding to the actual equivalent use duration to be the actual difference coefficient.

7. The compensation method according to claim 6 , wherein correcting, according to the compensation start duration, the use duration of the display panel to obtain the actual equivalent use duration comprises:
calculating a first difference value between a use duration of the display panel at any compensation time after the current time and a current use duration corresponding to the current time, and summing the first difference value with the compensation start duration to obtain the actual equivalent use duration.

8. The compensation method according to claim 6 , wherein correcting, according to the compensation start duration, the use duration of the display panel to obtain the actual equivalent use duration comprises:
determining a second difference value between the compensation start duration and a current use duration, and summing a use duration of the display panel at any compensation time after the current time with the second difference value to obtain the actual equivalent use duration.

9. The compensation method according to claim 1 , wherein compensating, according to the use duration of the display panel, the compensation start duration and the display compensation curve, the second display region from the current time comprises:
resetting the use duration of the display panel to zero from the current time, starting to re-time the use duration of the display panel, determining a location corresponding to the compensation start duration to be a start compensation zero point, looking for, according to the re-timed use duration, a corresponding difference coefficient on the display compensation curve each time compensating is performed, and compensating, according to the difference coefficient, the second display region.

10. The compensation method according to claim 1 , wherein the first display grayscale comprises n first sub-display grayscales, n is a positive integer greater than or equal to 2, and a difference value between any two of the n first sub-display grayscales is greater than a set threshold;
wherein with the first display grayscale of the first display region as the reference display grayscale, acquiring the second display grayscale of the second display region after the user adjusts the second display region comprises:
with each first sub-display grayscale among the n first sub-display grayscales of the first display region as the reference display grayscale, acquiring a second sub-display grayscale of the second display region after the user adjusts the second display region, respectively;
wherein determining, according to the first display grayscale and the second display grayscale, the difference coefficient between the

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Hu Fengzhang
• Lou Junhui
• Tang Tao
• Zhang Jinquan

Classifications

• G09G2320/0686

  with two or more screen areas displaying information with different brightness or colours · CPC title

• G09G2320/0673

  for control of gamma adjustment, e.g. selecting another gamma curve · CPC title

• G09G2320/0653

  Controlling or limiting the speed of brightness adjustment of the illumination source · CPC title

• G09G2320/0242

  Compensation of deficiencies in the appearance of colours · CPC title

• G09G3/3607

  for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127) · CPC title