US 12,456,407 B2
Luminance compensation method for display device
Dongin Kim, Yongin-si (KR); Kang-Min Kim, Yongin-si (KR); Byoungchel Kim, Yongin-si (KR); Jahun Koo, Yongin-si (KR); and Bongim Park, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Jun. 2, 2023, as Appl. No. 18/205,183.
Claims priority of application No. 10-2022-0133762 (KR), filed on Oct. 18, 2022.
Prior Publication US 2024/0135851 A1, Apr. 25, 2024
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2003 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0666 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A luminance compensation method for a display device, the luminance compensation method comprising:
measuring a luminance of each of white grayscale values;
measuring an actual luminance value for each of colors;
determining a target luminance value for each of the colors by multiplying the luminance of each of the white grayscale values and a luminance contribution ratio of each of the colors, wherein the luminance contribution ratio of each of the colors is calculated from a gamma correction result;
determining a luminance compensation amount for each of the colors based on the target luminance value and the actual luminance value; and
compensating for input image data for each of the colors based on the luminance compensation amount.