US 12,412,523 B2
Method of compensating for degeneration of electroluminescent display device and display system performing the same
Jiheon Ok, Hwaseong-si (KR); Hyeonsu Park, Seoul (KR); Jooyoung An, Seoul (KR); Yonghoon Yu, Suwon-si (KR); Hyunwook Lim, Seoul (KR); and Woohyuk Jang, Hwaseong-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jun. 15, 2021, as Appl. No. 17/348,151.
Claims priority of application No. 10-2020-0145957 (KR), filed on Nov. 4, 2020.
Prior Publication US 2022/0139309 A1, May 5, 2022
Int. Cl. G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2300/0439 (2013.01); G09G 2320/045 (2013.01); G09G 2320/046 (2013.01); G09G 2330/10 (2013.01); G09G 2330/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of compensating for degeneration of an electroluminescent display device, comprising:
grouping a plurality of pixels in a display panel into a plurality of pixel blocks arranged in present block rows and present block columns based on initial block boundaries;
circulating accumulated block stress values based on a first input image data, each accumulated block stress value representing a degeneration degree of the pixels included in each pixel block of the plurality of pixel blocks;
performing a boundary updating operation on the plurality of pixel blocks, the performing the boundary updating operation including moving present block boundaries of the plurality of pixel blocks to updated block boundaries based on a distribution of the accumulated block stress values;
correcting the first input image data based on the accumulated block stress values and the updated block boundaries;
receiving a second input image data; and
calculating new accumulated block stress values based on the second input image data and the updated block boundaries, each new accumulated block stress value representing the degeneration degree of the pixels included in the updated block boundaries of each pixel block of the plurality of pixel blocks.