公开(公告)号：US20240071276A1

公开(公告)日：2024-02-29

申请号：US18384539

申请日：2023-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： JAE SHIN KIM ,  INBOK SONG ,  SUNG-YEOL BAEK ,  KYUNGSU LEE

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G09G2310/027 ,  G09G2320/0257

Abstract: A display apparatus includes a display panel, an afterimage compensator and a data driver. The display panel displays an image. The afterimage compensator writes first stress data of input image data corresponding to a first area to a first memory area in a first block size and second stress data of the input image data corresponding to a second area to a second memory area in a second block size different from the first block size and compensates a grayscale value of the input image data based on the first stress data and the second stress data. The data driver generates a data voltage based on a compensated grayscale value and outputs the data voltage to the display panel.

公开(公告)号：US20220383794A1

公开(公告)日：2022-12-01

申请号：US17665893

申请日：2022-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： JAE SHIN KIM ,  INBOK SONG ,  SUNG-YEOL BAEK ,  KYUNGSU LEE

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, an afterimage compensator and a data driver. The display panel displays an image. The afterimage compensator writes first stress data of input image data corresponding to a first area to a first memory area in a first block size and second stress data of the input image data corresponding to a second area to a second memory area in a second block size different from the first block size and compensates a grayscale value of the input image data based on the first stress data and the second stress data. The data driver generates a data voltage based on a compensated grayscale value and outputs the data voltage to the display panel.

公开(公告)号：US20240096260A1

公开(公告)日：2024-03-21

申请号：US18199093

申请日：2023-05-18

Applicant: Samsung Display Co., LTD.

Inventor： SUNG-YEOL BAEK ,  INBOK SONG

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0271 ,  G09G2330/021 ,  G09G2360/14

Abstract: A display panel driver includes: a driving controller receiving input image data and converting the input image data into a data signal and a data driver converting the data signal into a data voltage. The driving controller includes a plurality of lookup tables storing data signal values corresponding to grayscale values of the input image data based on an input maximum luminance, and a total number of the data signal values stored in a first lookup table corresponding to a first input maximum luminance is different from a total number of the data signal values stored in a second lookup table corresponding to a second input maximum luminance.

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.