US 11,682,335 B2
Display device and method of driving the same
Kuk-Hwan Ahn, Uiwang-si (KR); Youngwook Yoo, Suwon-si (KR); Jungyu Lee, Seoul (KR); Hyunjun Lim, Suwon-si (KR); and Byung Ki Chun, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Jul. 28, 2020, as Appl. No. 16/941,451.
Claims priority of application No. 10-2019-0170832 (KR), filed on Dec. 19, 2019.
Prior Publication US 2021/0193017 A1, Jun. 24, 2021
Int. Cl. G09G 3/20 (2006.01); G09G 3/3233 (2016.01); G09G 3/3275 (2016.01); G09G 3/3266 (2016.01)
CPC G09G 3/2044 (2013.01) [G09G 3/3233 (2013.01); G09G 3/3275 (2013.01); G09G 3/3266 (2013.01); G09G 2320/02 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel comprising a display surface;
a memory storing dither patterns with respect to at least one spot area included in the display surface;
a dithering processor selecting a dither pattern among the dither patterns in a first predetermined time unit and outputting a compensation image signal corresponding to the selected dither pattern; and
a panel driver outputting a data signal corresponding to the spot area based on the compensation image signal,
wherein a first dither pattern of the dither patterns comprises a first grayscale area having a first grayscale value higher than a first target grayscale value of the spot area during a first frame and a second grayscale area having a second grayscale value lower than the first target grayscale value during the first frame,
wherein a difference in grayscale between the first grayscale value of the first grayscale area and the second grayscale value of the second grayscale area during the first frame is equal to or greater than two grayscale,
a difference in grayscale between the first grayscale value of the first grayscale area and the first target grayscale value is equal to or greater than one grayscale, and
a difference in grayscale between the second grayscale value of the second grayscale area and the first target grayscale value is equal to or greater than one grayscale.