公开(公告)号：US20190213953A1

公开(公告)日：2019-07-11

申请号：US16235374

申请日：2018-12-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAI-HYUN KOH ,  Jaehoon LEE ,  Heendol KIM ,  Kuk-hwan AHN ,  Soo-yeon LEE ,  Moonshik KANG

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0276 ,  G09G2320/046 ,  G09G2320/0626 ,  G09G2320/103 ,  G09G2360/16

Abstract: A luminance control circuit of a display device includes a target luminance gain calculator calculating a target luminance gain based on an average luminance of a first image signal when the first image signal is determined to be a still image, an output luminance gain calculator calculating an output luminance gain based on a previous output luminance gain of a previous frame and the target luminance gain of a present frame, and a luminance scaler outputting a second image signal obtained by changing a luminance of the first image signal based on the output luminance gain.