Method of generating compensation data and display device

Patent metadata

Field	Value
Publication number	US-12567390-B2
Application number	US-202418621099-A
Country	US
Kind code	B2
Filing date	Mar 29, 2024
Priority date	Sep 5, 2023
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A method of generating compensation data for a display device is disclosed that includes measuring a front luminance and a side luminance of the display device, generating a front correction value and a side correction value based on the front luminance and the side luminance, respectively, determining a front background component of the front correction value and a side background component of the side correction value, generating a front background-synthesized side correction value by replacing the side background component with the front background component in the side correction value, and generating the compensation data based on the front correction value and the front background-synthesized side correction value.

First claim

What is claimed is:

1 . A method of generating compensation data for a display device, the method comprising:
measuring a front luminance and a side luminance of the display device; generating a front correction value and a side correction value based on the front luminance and the side luminance, respectively; determining a front background component of the front correction value and a side background component of the side correction value; generating a front background-synthesized side correction value by replacing the side background component with the front background component in the side correction value; and generating the compensation data based on the front correction value and the front background-synthesized side correction value, wherein determining the front background component of the front correction value and the side background component of the side correction value includes: determining the front background component by calculating a moving average of the front correction value; and determining the side background component by calculating a moving average of the side correction value.

2 . The method of claim 1 , wherein the front luminance is a luminance of a front image captured by a first camera located on a line perpendicular to a display panel of the display device, and
wherein the side luminance is a luminance of a side image captured by a second camera located on a line having a predetermined angle with respect to the display panel.

3 . The method of claim 1 , wherein the front luminance and the side luminance are measured at a reference gray level, and generating the front correction value and the side correction value includes:
determining a front correction gray level corresponding to a target front luminance; generating the front correction value corresponding to a difference between the front correction gray level and the reference gray level; determining a side correction gray level corresponding to a target side luminance; and generating the side correction value corresponding to a difference between the side correction gray level and the reference gray level.

4 . The method of claim 1 , wherein generating the front background-synthesized side correction value includes:
subtracting the side background component from the side correction value; and adding the front background component to the side correction value from which the side background component is subtracted.

5 . The method of claim 1 , wherein generating the compensation data includes:
calculating an average of the front correction value and the front background-synthesized side correction value; and generating the compensation data representing the calculated average.

6 . The method of claim 1 , further comprising:
storing the compensation data in the display device.

7 . An electronic device comprising:
a processor configured to provide input image data; and a display device comprising:
a display panel including a plurality of pixels;
a scan driver configured to provide scan signals to the plurality of pixels;
a compensation data memory configured to store compensation data;
a controller configured to generate corrected image data by correcting the input image data based on the compensation data; and
a data driver configured to provide data signals to the plurality of pixels based on the corrected image data,
wherein the compensation data are generated based on a front luminance of a front image captured by a first camera located on a line perpendicular to the display panel and a side luminance of a side image captured by a second camera located on a line having a predetermined angle with respect to the display panel, wherein a front correction value and a side correction value are generated based on the front luminance and the side luminance, respectively, wherein a front background component of the front correction value and a side background component of the side correction value are determined, wherein a front background-synthesized side correction value is generated by replacing the side background component with the front background component in the side correction value, wherein the compensation data are generated based on the front correction value and the front background-synthesized side correction value, wherein the front background component is determined by calculating a moving average of the front correction value, and wherein the side background component is determined by calculating a moving average of the side correction value.

8 . The electronic device of claim 7 , wherein the front background-synthesized side correction value is generated by subtracting the side background component from the side correction value and by adding the front background component to the side correction value from which the side background component is subtracted, and
wherein the compensation data represent an average of the front correction value and the front background-synthesized side correction value.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Mingyu
• Chung Jae-Seob
• Lee Juneyoung
• Choi Jae-Seok

Classifications

• G09G2320/0233

  Improving the luminance or brightness uniformity across the screen · CPC title

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G2320/0271

  Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping · CPC title

• G09G2360/16

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

• H04N5/57

  Control of contrast or brightness · CPC title