公开(公告)号：US20240221671A1

公开(公告)日：2024-07-04

申请号：US18379323

申请日：2023-10-12

Applicant: Samsung Display Co., LTD.

Inventor： BYOUNGKWAN AN ,  JOONHYEOK JEON ,  SANGMYEON HAN ,  SEUNGHO PARK

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2320/0242 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/0626 ,  G09G2360/16

Abstract: A driving controller of a display device includes: an accumulation unit, which outputs accumulation data, which is obtained by accumulating a deterioration state, and a deterioration stress value based on an input image signal and a deterioration prediction temperature value; a temperature prediction unit that calculates the deterioration prediction temperature value based on the accumulation data, a color acceleration coefficient, a color current contribution ratio, and a temperature signal; and a compensation unit that outputs an output image signal based on the input image signal and the deterioration stress value.

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：US20230419870A1

公开(公告)日：2023-12-28

申请号：US18125622

申请日：2023-03-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jongbin Kim ,  SEUNGHO PARK ,  BOYOUNG AN ,  WOOK LEE ,  JI-WOONG JEONG

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/2096 ,  G09G3/3233 ,  G09G2330/028 ,  G09G2300/0842 ,  G09G2330/12 ,  G09G2320/041 ,  G09G2310/0202

Abstract: A display apparatus includes a display panel including pixels, a gate driver outputting gate signals to the pixels, a data driver outputting data voltages to the pixels, a sensing circuit receiving sensed signals from the pixels, a power voltage generator applying a power voltage, and a driving controller for stopping the display panel, the gate driver, the data driver, and/or the power voltage generator when the display panel is determined to be defective. The driving controller selects a first-mode threshold set or a second-mode threshold set based on an initial value set related to the sensed signals for determining whether the display panel is defective. Thresholds in the first-mode threshold set respectively correspond to and are respectively unequal to thresholds in the second-mode threshold set.

公开(公告)号：US20230186831A1

公开(公告)日：2023-06-15

申请号：US17869218

申请日：2022-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG ,  SEUNGHO PARK ,  DAE-SIK LEE

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0271 ,  G09G2330/021 ,  G09G2300/0828

Abstract: A display device includes a display panel which displays an image based on input image data, a driving controller which generates a voltage control signal for adjusting a first power voltage applied to the display panel in an (N+M)-th frame based on a maximum grayscale value of the input image data of an N-th frame, where N is a positive integer, and M is a positive integer, and a power voltage generator which senses a power current applied to the display panel in the (N+M)-th frame, generates a second power voltage based on the voltage control signal, and controls a voltage level of the first power voltage based on the second power voltage and a current level of the power current.