US 12,073,756 B2
Method of compensating for luminance of display device
Sungjae Park, Seongnam-si (KR); Seunghwan Park, Anyang-si (KR); Jinho Lee, Hwaseong-si (KR); Namjae Lim, Yongin-si (KR); and Kyung-Sik Joo, Cheonan-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Jan. 30, 2023, as Appl. No. 18/102,803.
Claims priority of application No. 10-2022-0015046 (KR), filed on Feb. 4, 2022.
Prior Publication US 2023/0252929 A1, Aug. 10, 2023
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2007 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0673 (2013.01); G09G 2320/0686 (2013.01); G09G 2340/0435 (2013.01); G09G 2360/145 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of compensating for luminance of a display device comprising:
determining position compensation values of each of panel blocks for measurement grayscale values based on a difference between luminance of a reference panel block and luminance of the each of the panel blocks for the measurement grayscale values;
generating a first gamma curve for a first driving frequency based on luminance of the panel blocks for the measurement grayscale values at the first driving frequency and the position compensation values of the each of the panel blocks for the measurement grayscale values;
generating a second gamma curve for a second driving frequency different from the first driving frequency based on a difference between luminance of the panel blocks for the measurement grayscale values at the second driving frequency and the luminance of the panel blocks for the measurement grayscale values at the first driving frequency; and
compensating for input image data based on the first gamma curve and the second gamma curve.