公开(公告)号：US12033583B2

公开(公告)日：2024-07-09

申请号：US18077405

申请日：2022-12-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jonghee Kim ,  Bogyeong Kim ,  Tak-Young Lee ,  Boyong Chung ,  Byungseok Choi

IPC: G09G3/3266 ,  G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0295

Abstract: A gate driver includes stages. Each stage includes: a first output part for outputting a carry signal in response to a voltage of a first node; a first input part for controlling the voltage of the first node in response to a previous carry signal; a second input part for controlling the voltage of the first node in response to a first next carry signal; a second output part for outputting a scan signal in response to the voltage of the first node; a third output part for outputting a sensing signal in response to the voltage of the first node; and a scan signal control part for applying a first low power voltage to an output terminal of the second output part to which the scan signal is output in response to a second next carry signal of which a pulse is generated before the first next carry signal.

公开(公告)号：US11798459B2

公开(公告)日：2023-10-24

申请号：US17955198

申请日：2022-09-28

Applicant: Samsung Display Co., Ltd.

Inventor： Chang-Soo Lee ,  Joosun Yoon ,  Boyong Chung

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2096 ,  G09G3/2007 ,  G09G3/32 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2320/0233

Abstract: A display apparatus includes a display panel including a plurality of pixels, a data driver to provide data voltages to the plurality of pixels and to sense threshold voltages of the pixels, and a driving controller to generate first difference values by calculating differences between the data voltages for first pixels included in an N-th pixel row and the data voltages for second pixels included in an (N+1)-th pixel row among the plurality of pixels in an initial driving period, to calculate limit offset values for the second pixels based on the first difference values, to generate threshold voltage compensation values for the second pixels based on the threshold voltages of the second pixels, and to compensate input image data for the second pixels based on the threshold voltage compensation values and the limit offset values, where N is an integer greater than 0.

公开(公告)号：US11727885B2

公开(公告)日：2023-08-15

申请号：US17847732

申请日：2022-06-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jonghee Kim ,  Bogyeong Kim ,  Takyoung Lee ,  Boyong Chung ,  Byungseok Choi

IPC: G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08

Abstract: A scan driver includes a plurality of stages, each of the plurality of stages including: a first controller to control voltage levels of a first control node and a second control node in response to a first start signal and a second start signal, and to output a first carry signal; a second controller to control voltage levels of a third control node and a fourth control node in response to the first start signal and the second start signal, and to output a second carry signal; and an output circuit including: a pull-up transistor having a gate connected to the first control node; and a pull-down transistor having a gate connected to the third control node. The output circuit is to output a scan signal based on an on voltage output through the pull-up transistor and an off voltage output through the pull-down transistor.

公开(公告)号：US11620955B2

公开(公告)日：2023-04-04

申请号：US17737910

申请日：2022-05-05

Applicant: Samsung Display Co., LTD.

Inventor： Chang-Soo Lee ,  Boyong Chung

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel includes a gate line, a data line, a sensing line and a subpixel connected to the gate line, the data line and the sensing line. The gate outputs a gate signal to the gate line. The data driver outputs a data voltage to the data line. The driving controller controls the gate driver and the data driver. The display panel includes a first color subpixel, a second color subpixel and a third color subpixel. The driving controller is configured to determine a sensing target gate line among a plurality of gate lines based on first color data corresponding to the first color subpixel, second color data corresponding to the second color subpixel and third color data corresponding to the third color subpixel.

公开(公告)号：US10810938B2

公开(公告)日：2020-10-20

申请号：US16278963

申请日：2019-02-19

Applicant: Samsung Display Co., Ltd.

Inventor： Ansu Lee ,  Jun Hyun Park ,  Boyong Chung ,  Kangmoon Jo

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3258 ,  H01L27/32

Abstract: An organic light emitting display device which secures a sufficient compensation time during which a threshold voltage of a driving transistor is compensated by driving a display panel using a simultaneous emission driving method by which a plurality of pixels simultaneously emit light. The organic light emitting display device may reduce a length (or, a time) of a non-emission period by storing a data signal of a current frame into a second capacitor of the pixel in an emission period of a previous frame and by adjusting a voltage at a gate electrode of a driving transistor of the pixel based on a voltage stored in the second capacitor in a data writing period of the current frame.

公开(公告)号：US20190259330A1

公开(公告)日：2019-08-22

申请号：US16278963

申请日：2019-02-19

Applicant: Samsung Display Co., Ltd.

Inventor： Ansu Lee ,  Jun Hyun Park ,  Boyong Chung ,  Kangmoon Jo

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3258 ,  H01L27/32

Abstract: An organic light emitting display device which secures a sufficient compensation time during which a threshold voltage of a driving transistor is compensated by driving a display panel using a simultaneous emission driving method by which a plurality of pixels simultaneously emit light. The organic light emitting display device may reduce a length (or, a time) of a non-emission period by storing a data signal of a current frame into a second capacitor of the pixel in an emission period of a previous frame and by adjusting a voltage at a gate electrode of a driving transistor of the pixel based on a voltage stored in the second capacitor in a data writing period of the current frame.