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：US20230126636A1

公开(公告)日：2023-04-27

申请号：US17881560

申请日：2022-08-04

Applicant: Samsung Display Co., LTD.

Inventor： JI-WOONG JEONG ,  BOYOUNG AN ,  KYOUNGHO LIM

IPC: G09G3/20

Abstract: A display device includes a display panel including pixels, and a driver to drive the display panel based on input image data. The driver performs a sensing operation for the pixels, to selectively perform the sensing operation by comparing grayscale values of the input image data and a reference grayscale value, to selectively perform a luminance control operation for controlling luminance of the display panel in response to a luminance control signal, and to adjust the reference grayscale value when the luminance control operation is performed.

公开(公告)号：US20240153429A1

公开(公告)日：2024-05-09

申请号：US18367561

申请日：2023-09-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JI-WOONG JEONG ,  BOYOUNG AN

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2018 ,  G09G3/32 ,  G09G2310/0208 ,  G09G2310/027 ,  G09G2320/0666

Abstract: A display device including: a display panel which includes a plurality of pixels arranged in first to nth pixel rows, wherein n is a natural number greater than 1; and a panel driver which drives the display panel in response to input image data, and generates sensing data by sensing the plurality of pixels, wherein the panel driver randomly senses one of the first to nth pixel rows in each of a plurality of sensing frame periods when the input image data correspond to a low grayscale image, wherein the sensing frame periods are repeated and consecutive non-sensing frame periods are provided between the sensing frame periods.

公开(公告)号：US20230298494A1

公开(公告)日：2023-09-21

申请号：US17977015

申请日：2022-10-31

Applicant: Samsung Display Co., LTD.

Inventor： Jongbin Kim ,  JUNGKI MIN ,  BOYOUNG AN

IPC: G09G3/00 ,  G09G3/20

CPC classification number: G09G3/006 ,  G09G3/20 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2330/027 ,  G09G2330/04 ,  G09G2320/029

Abstract: A display device includes a display panel including pixels, a data driver receiving sensing data corresponding to a driving current value of a driving transistor of each of the pixels, and a driving controller calculating a change amount of the sensing data, determining bad pixels based on the change amount of the sensing data, and performing a panel protection operation based on a number of the bad pixels.

公开(公告)号：US20230047875A1

公开(公告)日：2023-02-16

申请号：US17732375

申请日：2022-04-28

Applicant: Samsung Display Co., Ltd.

Inventor： BOYOUNG AN ,  JI-WOONG JEONG ,  Wook Lee ,  JUNGKI MIN

IPC: G09G3/32

Abstract: A display device including pixels; a controller configured to generate first compensation data based on first sensing data with respect to threshold voltages of driving transistors of the pixels which are sensed during a first sensing period, to generate second compensation data based on second sensing data with respect to mobilities of the driving transistors of the pixels which are sensed during the first sensing period, to generate third compensation data based on third sensing data with respect to mobility change amounts of the driving transistors of the pixels which are sensed using image data for sensing compensated based on the first and second compensation data during a second sensing period, and to compensate input image data based on the first, second, and third compensation data to generate compensated image data; and a data driver configured to provide data voltages to the pixels based on the compensated image data.