US 12,277,887 B2
Method of detecting stain of display panel, method of compensating stain of display panel including the same and display apparatus configured to perform the same
Huisu Kim, Busan (KR); Seyun Kim, Hwaseong-si (KR); Hyungwoo Yim, Hwaseong-si (KR); Hakmo Choi, Seoul (KR); Seungho Park, Suwon-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 Dec. 20, 2022, as Appl. No. 18/085,489.
Claims priority of application No. 10-2022-0014333 (KR), filed on Feb. 3, 2022.
Prior Publication US 2023/0245610 A1, Aug. 3, 2023
Int. Cl. G09G 3/20 (2006.01); G06T 7/90 (2017.01)
CPC G09G 3/2003 (2013.01) [G06T 7/90 (2017.01); G06T 2207/20221 (2013.01); G06T 2207/30168 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0673 (2013.01); G09G 2330/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting a stain of a display panel, the method comprising:
capturing a first color image of the display panel;
capturing a second color image of the display panel;
generating a merged image by merging a color coordinate map of the first color image and a color coordinate map of the second color image;
generating a background image of the merged image by a morphology filtering operation;
generating a flattened image by operating the merged image and the background image; and
detecting an area of the flattened image in which a color coordinate value exceeds a threshold value as a stain area.