US 12,080,205 B2
Device and method for compensating for stains caused by deterioration of a display device
Hyun Dae Lee, Hwaseong-si (KR); and Kyung Tea Park, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Oct. 4, 2021, as Appl. No. 17/493,169.
Claims priority of application No. 10-2020-0145814 (KR), filed on Nov. 4, 2020.
Prior Publication US 2022/0139278 A1, May 5, 2022
Int. Cl. G09G 3/00 (2006.01); G06V 40/13 (2022.01); G09G 3/20 (2006.01); G09G 3/3208 (2016.01)
CPC G09G 3/006 (2013.01) [G06V 40/1318 (2022.01); G09G 3/035 (2020.08); G09G 3/2007 (2013.01); G09G 3/3208 (2013.01); G09G 2320/0257 (2013.01); G09G 2320/029 (2013.01); G09G 2320/045 (2013.01); G09G 2360/145 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of compensating for stains caused by deterioration of a display device, the display device including an illuminance sensor and a display panel including a folding area, a first non-folding area positioned on a first side of the folding area, and a second non-folding area positioned on a second side of the folding area, the first non-folding area including first pixels, the second non-folding area including second pixels and an optical fingerprint sensor, the method comprising:
determining, while in a test mode of the display device and via the illuminance sensor, whether an illuminance is a reference value or less;
emitting, while in the test mode of the display device, first light of a first color from the first pixels when the illuminance is the reference value or less;
acquiring, while in the test mode of the display device, first afterimage compensation data relating to amounts of deterioration of the first pixels by receiving the first light through the optical fingerprint sensor;
emitting, while in the test mode of the display device, second light of the first color from the second pixels when the illuminance is the reference value or less;
acquiring, while in the test mode of the display device, second afterimage compensation data relating to amounts of deterioration of the second pixels by receiving the second light through the optical fingerprint sensor;
tuning an optical characteristic of the first afterimage compensation data based on an optical characteristic of the second afterimage compensation data; and
converting, while in the test mode of the display device, pixel data based on the tuned first afterimage compensation data.