公开(公告)号：US11875736B2

公开(公告)日：2024-01-16

申请号：US17986115

申请日：2022-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： Youngsoo Sohn ,  Jong-Woong Park ,  SeokJeong Song ,  Jiyeon Baik

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0238 ,  G09G2320/043 ,  G09G2320/066 ,  G09G2330/021

Abstract: A driving controller includes a compensator that 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 that converts the output image signal into current stress in response to an enable signal, an accumulation stress calculator that outputs second accumulated stress by adding the first accumulated stress and the current stress in response to the enable signal, a memory that stores the second accumulated stress and provides the first accumulated stress to the compensator and the accumulation stress calculator, and an operating time calculator that receives a current operating frequency and outputs the enable signal of an active level based on the current operating frequency.