US 11,875,736 B2
Driving controller, display device including the same and operating method of display device
Youngsoo Sohn, Yongin-si (KR); Jong-Woong Park, Seongnam-si (KR); SeokJeong Song, Yongin-si (KR); and Jiyeon Baik, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Nov. 14, 2022, as Appl. No. 17/986,115.
Claims priority of application No. 10-2022-0028403 (KR), filed on Mar. 4, 2022.
Prior Publication US 2023/0282154 A1, Sep. 7, 2023
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0238 (2013.01); G09G 2320/043 (2013.01); G09G 2320/066 (2013.01); G09G 2330/021 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A driving controller comprising:
a compensator which receives an input image signal, calculates a compensation value based on first accumulated stress, and outputs an output image signal by compensating for the input image signal with the compensation value;
a stress converter which converts the output image signal into current stress in response to an enable signal;
an accumulation stress calculator which outputs second accumulated stress by adding the first accumulated stress and the current stress in response to the enable signal;
a memory which stores the second accumulated stress and provides the first accumulated stress to the compensator and the accumulation stress calculator; and
an operating time calculator which receives a current operating frequency and outputs the enable signal of an active level based on the current operating frequency.