公开(公告)号：US20240177671A1

公开(公告)日：2024-05-30

申请号：US18432846

申请日：2024-02-05

Applicant: Samsung Display Co., Ltd.

Inventor： HAYONG JUNG ,  JOONSUK BAIK ,  JAEHOON SHIN ,  WOOK LEE ,  JUNG-TAEK KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A sensing circuit of a display device includes a sensing line initialization circuit which substantially simultaneously initializes a first sensing line and a second sensing line in a first sub-sensing period of a sensing period, a first line selection switch which couples the first sensing line to a sensing channel in the first sub-sensing period, a second line selection switch which couples the second sensing line to the sensing channel in a second sub-sensing period of the sensing period, and the sensing channel which samples a first sensing voltage of the first sensing line in a first sampling period of the first sub-sensing period, and samples a second sensing voltage of the second sensing line in a second sampling period of the second sub-sensing period. The second sensing line is not initialized during a period from the first sampling period to the second sampling period.

公开(公告)号：US20230125279A1

公开(公告)日：2023-04-27

申请号：US18145078

申请日：2022-12-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SEOKGYU BAN ,  WOOK LEE ,  JAEHOON SHIN

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a compensator, a controller, and a data driver. The compensator determines a degradation grayscale of a compensation region of the display panel. The degradation grayscale may be determined based on a driving time of at least one pixel in the compensation region and degradation data corresponding to the at least one pixel. The controller generates compensated image data for input image data based on the degradation grayscale. The data driver provides a data voltage to the at least one pixel based on the compensated image 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：US20220375415A1

公开(公告)日：2022-11-24

申请号：US17817501

申请日：2022-08-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SUNG HWAN KIM ,  WOOK LEE ,  HAYONG JUNG

IPC: G09G3/3291 ,  H03M1/36

Abstract: A sensing circuit includes a first input selecting circuit connected to a first sensing line and a second sensing line, a first path setting circuit that sets a path of a first sensing signal received from the first sensing line or a path of a second sensing signal received from the second sensing line, a second path setting circuit that sets a path of a sensing reference voltage, a first switch matrix connected to the first path setting circuit and the second path setting circuit, a first mode setting circuit connected to a first output terminal of the first switch matrix, a first common sensing amplifier connected to the first mode setting circuit, a second mode setting circuit connected to a second output terminal of the first switch matrix, and a second common sensing amplifier connected to the second mode setting circuit.

公开(公告)号：US20240038168A1

公开(公告)日：2024-02-01

申请号：US18195684

申请日：2023-05-10

Applicant: Samsung Display Co., LTD.

Inventor： HAYONG JUNG ,  WOOK LEE ,  SUNG HWAN KIM ,  JAEHOON SHIN

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2330/12 ,  G09G2310/08 ,  G09G2320/029

Abstract: A sensing circuit includes a first line selection switch which connects a first sensing line to a sensing channel in a first sub-sensing period, a first noise selection switch which connects the first sensing line to a reference channel in a second sub-sensing period, a second line selection switch which connects a second sensing line to the sensing channel in the second sub-sensing period, and a second noise selection switch which connects the second sensing line to the reference channel in the first sub-sensing period. The sensing channel samples a first sensing voltage and noise of the first sensing line and the reference channel samples noise of the second sensing line in a first sampling period, and the sensing channel samples a second sensing voltage and noise of the second sensing line and the reference channel samples noise of the first sensing line in a second sampling period.

公开(公告)号：US20230317001A1

公开(公告)日：2023-10-05

申请号：US17986342

申请日：2022-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： HAYONG JUNG ,  JUNG-TAEK KIM ,  JOONSUK BAIK ,  JAEHOON SHIN ,  WOOK LEE

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A sensing circuit of a display device includes a sensing line initialization circuit which substantially simultaneously initializes a first sensing line and a second sensing line in a first sub-sensing period of a sensing period, a first line selection switch which couples the first sensing line to a sensing channel in the first sub-sensing period, a second line selection switch which couples the second sensing line to the sensing channel in a second sub-sensing period of the sensing period, and the sensing channel which samples a first sensing voltage of the first sensing line in a first sampling period of the first sub-sensing period, and samples a second sensing voltage of the second sensing line in a second sampling period of the second sub-sensing period. The second sensing line is not initialized during a period from the first sampling period to the second sampling period.

公开(公告)号：US20220199042A1

公开(公告)日：2022-06-23

申请号：US17643850

申请日：2021-12-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SEOKGYU BAN ,  WOOK LEE ,  JAEHOON SHIN

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a compensator, a controller, and a data driver. The compensator determines a degradation grayscale of a compensation region of the display panel. The degradation grayscale may be determined based on a driving time of at least one pixel in the compensation region and degradation data corresponding to the at least one pixel. The controller generates compensated image data for input image data based on the degradation grayscale. The data driver provides a data voltage to the at least one pixel based on the compensated image data.

公开(公告)号：US20220076638A1

公开(公告)日：2022-03-10

申请号：US17467502

申请日：2021-09-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SUNG HWAN KIM ,  WOOK LEE ,  HAYONG JUNG

IPC: G09G3/3291 ,  H03M1/36

Abstract: A sensing circuit includes a first input selecting circuit connected to a first sensing line and a second sensing line, a first path setting circuit that sets a path of a first sensing signal received from the first sensing line or a path of a second sensing signal received from the second sensing line, a second path setting circuit that sets a path of a sensing reference voltage, a first switch matrix connected to the first path setting circuit and the second path setting circuit, a first mode setting circuit connected to a first output terminal of the first switch matrix, a first common sensing amplifier connected to the first mode setting circuit, a second mode setting circuit connected to a second output terminal of the first switch matrix, and a second common sensing amplifier connected to the second mode setting circuit.