公开(公告)号：US20230316991A1

公开(公告)日：2023-10-05

申请号：US18099534

申请日：2023-01-20

Applicant: Samsung Display Co., Ltd.

Inventor： DOWON KIM ,  MIN-WEUN KIM ,  SUNG-YEOL BAEK

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0276 ,  G09G2310/027 ,  G09G2320/0233

Abstract: A display device includes a luminance correction unit that corrects input data based on a dimming code value and outputs correction data, a gamma correction unit that corrects the correction data and generates output data, a gamma voltage generator that generates gamma voltages depending on a first voltage code value, a data driver that converts the output data into data voltages based on the gamma voltages, and a controller that supplies the dimming code value and the input data to the luminance correction unit and provides the first voltage code value to the gamma voltage generator. The controller compares a highest dimming compares a highest dimming grayscale value of the output data determined by the dimming code value with a highest reference grayscale value and updates the first voltage code value with a second voltage code value.

公开(公告)号：US20230237949A1

公开(公告)日：2023-07-27

申请号：US17986134

申请日：2022-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： DOWON KIM ,  YOON KANG ,  MIN-WEUN KIM ,  SUNG-YEOL BAEK

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2007 ,  G09G3/3233 ,  G09G2320/041 ,  G09G2320/0242 ,  G09G2320/0276 ,  G09G2360/16

Abstract: An electronic device includes a display layer, a data driving circuit, a scan driving circuit, a driving controller, and a temperature sensor which measures a temperature of the display layer to generate temperature data. The driving controller includes a first lookup table calculating unit which calculates a first lookup table based on the image signal, the temperature data, and a reference lookup table set for each of a plurality of gray levels, a luminance compensating unit which calculates a luminance weight based on luminance data, and a second lookup table calculating unit which calculates a second lookup table based on the first lookup table and the luminance weight, and the driving controller generates the image data based on the image signal and the second lookup table.