公开(公告)号：US20240177655A1

公开(公告)日：2024-05-30

申请号：US18367483

申请日：2023-09-13

Applicant: Samsung Display Co., Ltd.

Inventor： JONGMAN KIM ,  SANGMYEON HAN ,  BYOUNGKWAN AN ,  SEUNGHO PARK ,  NAMJAE LIM ,  JOONHYEOK JEON

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0257 ,  G09G2340/00 ,  G09G2350/00

Abstract: A display driver includes a nonvolatile memory, an encoder, a decoder, and a compensator. The nonvolatile memory is configured to store accumulated stress data and compensation data corresponding to the accumulated stress data. The encoder is configured to encode the compensation data received from the nonvolatile memory to generate encoded compensation data. The decoder is configured to decode the encoded compensation data to generate decoded compensation data. The compensator is configured to process input image data based on the decoded compensation data and generate accumulated stress data.

公开(公告)号：US20240203313A1

公开(公告)日：2024-06-20

申请号：US18588946

申请日：2024-02-27

Applicant: Samsung Display Co., Ltd.

Inventor： JINHO LEE ,  SUNGJAE PARK ,  SEUNGHWAN PARK ,  NAMJAE LIM ,  YOUNGWOON CHOI ,  JONG WOOK KIM

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2310/027 ,  G09G2320/041

Abstract: A display device includes a display panel and a display panel driver. The display panel includes pixels. The display panel driver determines an average image load of input image data, determines an operation mode based on a grayscale value of the input image data and the average image load as a first operation mode or a second operation mode, applies a first scale factor to the input image data in the first operation mode, applies a second scale factor different from the first scale factor to the input image data in the second operation mode, and drives the display panel.

公开(公告)号：US20230252929A1

公开(公告)日：2023-08-10

申请号：US18102803

申请日：2023-01-30

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE PARK ,  SEUNGHWAN PARK ,  JINHO LEE ,  NAMJAE LIM ,  KYUNG-SIK JOO

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2360/145 ,  G09G2320/0233 ,  G09G2340/0435 ,  G09G2320/0686 ,  G09G2320/0673

Abstract: A method of compensating for luminance of a display device includes determining position compensation values of each of panel blocks for measurement grayscale values based on a difference between luminance of a reference panel block and luminance of the each of the panel blocks for the measurement grayscale values, generating a first gamma curve for a first driving frequency and the position compensation values of the each of the panel blocks for the measurement grayscale values, generating a second gamma curve for a second driving frequency and the luminance of the panel blocks for the measurement grayscale values at the first driving frequency, and compensating for input image data based on the first gamma curve and the second gamma curve.

公开(公告)号：US20230154436A1

公开(公告)日：2023-05-18

申请号：US17943296

申请日：2022-09-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JINHO LEE ,  SEUNGHWAN PARK ,  YOUNGWOON CHOI ,  SUNGJAE PARK ,  SEUNGHO PARK ,  KITAE YOON ,  NAMJAE LIM

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2340/16 ,  G09G2360/16

Abstract: A display device including: a display panel including first through N-th pixel rows; and a panel driver configured to sequentially receive first through N-th line data for the first through the N-th pixel rows in each frame period, and to drive the display panel based on the first through the N-th line data, the panel driver including: a current control circuit configured to determine a current control value for a (K+1 )-th pixel row based on the first through K-th line data for the first through K-th pixel rows received in a current frame period and (K+1 )-th through the N-th line data for the (K+1)-th through the N-th pixel rows received in a previous frame period; and a data correction circuit configured to correct the (K+1)-th line data for the (K+1)-th pixel row based on the current control value in the current frame period.