US 11,929,014 B2
Display device and method of driving the same
Kihyun Pyun, Gwangmyeong-si (KR); Sung-Mo Yang, Hwaseong-si (KR); Seungho Park, Suwon-si (KR); and Dae-Sik Lee, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jul. 20, 2022, as Appl. No. 17/869,218.
Claims priority of application No. 10-2021-0178719 (KR), filed on Dec. 14, 2021.
Prior Publication US 2023/0186831 A1, Jun. 15, 2023
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0828 (2013.01); G09G 2320/0271 (2013.01); G09G 2330/021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel which displays an image based on input image data;
a driving controller which generates a voltage control signal for adjusting a first power voltage applied to the display panel in an (N+M)-th frame based on a maximum grayscale value of the input image data of an N-th frame, wherein N is a positive integer, and M is a positive integer; and
a power voltage generator which senses a power current applied to the display panel in the (N+M)-th frame, generates a second power voltage based on the voltage control signal, and controls a voltage level of the first power voltage based on the second power voltage and a current level of the power current.