US 11,670,217 B2
Display apparatus and method of driving the same
Yunki Baek, Suwon-si (KR); and Manseung Cho, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Jul. 21, 2021, as Appl. No. 17/381,529.
Claims priority of application No. 10-2020-0144733 (KR), filed on Nov. 2, 2020.
Prior Publication US 2022/0139292 A1, May 5, 2022
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2092 (2013.01) [G09G 2300/026 (2013.01); G09G 2310/0289 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0693 (2013.01); G09G 2330/028 (2013.01); G09G 2330/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a plurality of display panels;
a power voltage generator which generates power voltages of the plurality of display panels, respectively; and
a driving controller which receives the power voltages from feedback points of the plurality of display panels, generates a control signal and controls levels of the power voltages based on fed-back power voltages from the feedback points of the plurality of display panels,
wherein the power voltage generator adjusts the levels of the power voltages, generates compensation power voltages based on the control signal and applies the compensation power voltages to the plurality of display panels through a plurality of power lines, respectively,
wherein the driving controller determines a maximum voltage among the fed-back power voltages as a target value, and
wherein the power voltage generator increases levels of the compensation power voltages corresponding to the fed-back power voltages less than the maximum voltage based on the target value.