公开(公告)号：US12106719B2

公开(公告)日：2024-10-01

申请号：US18507102

申请日：2023-11-13

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/32 ,  G09G3/3258 ,  H10K59/121 ,  H10K59/131

CPC classification number: G09G3/3258 ,  H10K59/121 ,  H10K59/131 ,  G09G2300/0426 ,  G09G2300/0842

Abstract: A display device includes a substrate, a first conductive layer disposed on the substrate, a second conductive layer disposed on the first conductive layer and a third conductive layer disposed on the second conductive layer. The first conductive layer includes a data line extending in a first direction. The second conductive layer includes a first scan line extending in a second direction intersecting the first direction, and a second scan line spaced apart from the first scan line and extending in the second direction. The third conductive layer includes a first driving voltage line extending in the second direction, a first common voltage line spaced apart from the first driving voltage line and extending in the second direction, and a pixel electrode disposed between the first driving voltage line and the first common voltage line in a plan view.

公开(公告)号：US11908423B2

公开(公告)日：2024-02-20

申请号：US17864764

申请日：2022-07-14

Applicant: Samsung Display Co., Ltd.

Inventor： Boyong Chung ,  Jonghee Kim ,  Hyuk Kim ,  Joosun Yoon ,  Tak-Young Lee

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3258

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3258 ,  G09G2310/0272 ,  G09G2330/025 ,  G09G2330/026 ,  G09G2330/027 ,  G09G2330/028

Abstract: A display device includes a display panel including a plurality of pixels, a gate driver which provides a gate signal to corresponding pixels of the plurality of pixels, a data driver which provides a data voltage to the corresponding pixels of the plurality of pixels, a power voltage generator which provides a pixel power voltage to each of the plurality of pixels, and provides a gate power voltage to the gate driver, and a controller which provides a gate control signal to the gate driver. The pixel power voltage, the data voltage, and the gate control signal sequentially have a ground voltage level in response to a power-off signal.

公开(公告)号：US20230186858A1

公开(公告)日：2023-06-15

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 ,  G09G2300/0842 ,  G09G2300/0819 ,  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：US11663956B2

公开(公告)日：2023-05-30

申请号：US17588806

申请日：2022-01-31

Applicant: Samsung Display Co., Ltd.

Inventor： Chang-Soo Lee ,  Boyong Chung

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/0243 ,  G09G2310/0272 ,  G09G2310/06 ,  G09G2310/08 ,  G09G2320/0266

Abstract: A pixel includes: a light emitting element; a first transistor which drives the light emitting element; a second transistor electrically connected between a gate node of the first transistor and a data line; a third transistor electrically connected between a first node of the first transistor and an initialization voltage line; and a storage capacitor electrically connected between the gate node and the first node of the first transistor. Here, upon an operation in a variable frame mode, an initialization voltage is applied to the initialization voltage line, and the initialization voltage has a first voltage level. In addition, in a data writing period during which the storage capacitor is charged with an electric charge, the initialization voltage further includes a pulse voltage such that the initialization voltage has a second voltage level that is greater than the first voltage level.

公开(公告)号：US20220358885A1

公开(公告)日：2022-11-10

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：US10733941B2

公开(公告)日：2020-08-04

申请号：US16166475

申请日：2018-10-22

Applicant: Samsung Display Co., Ltd. ,  Industry-University Cooperation Foundation Hanyang University

Inventor： Chongchul Chai ,  Ansu Lee ,  Boyong Chung ,  Oh-Kyong Kwon ,  Nack-Hyeon Keum

IPC: G09G3/3291 ,  G09G3/3233 ,  H01L27/32 ,  G09G3/3258 ,  G09G3/3266

Abstract: A pixel includes a first transistor connected between a line supplying a power supply voltage and a second node, and providing a driving current corresponding to a data voltage to a light emitting element based on a voltage of a first node, a third transistor connected between the first node and a line supplying a reference voltage, and generating a sampling current based on a difference between a voltage of the second node and the reference voltage, a second transistor connected between the line supplying the power supply voltage and the first node, adjusting the voltage of the first node to generate the sampling current based on a voltage of a third node, a fourth transistor transferring the power supply voltage to the third node, a fifth transistor transferring the data voltage to the second node, and a capacitor connected between the first node and the third node.

公开(公告)号：US12190791B2

公开(公告)日：2025-01-07

申请号：US18143011

申请日：2023-05-03

Applicant: Samsung Display Co., Ltd.

Inventor： Hyuk Kim ,  Jonghee Kim ,  Doo-Young Lee ,  Chang-Soo Lee ,  Sang-Uk Lim ,  Boyong Chung

IPC: G09G3/32 ,  H01L27/12

Abstract: Provided is a gate driving circuit comprising an N-th stage and an N+1-th stage. The N-th stage outputs an N-th scan gate signal based on an N-th scan clock signal, a voltage of a QN node, and a voltage of a QBN node and to output an N-th carry signal based on an N-th carry clock signal, the voltage of the QN node, and the voltage of the QBN node. The N+1-th stage outputs an N+1-th scan gate signal based on an N+1-th scan clock signal, a voltage of a QN+1 node, and the voltage of the QBN node and an N+1-th carry signal based on an N+1-th carry clock signal, the voltage of the QN+1 node, and the voltage of the QBN node. The N-th stage and the N+1-th stage share an inverting circuit. The inverting circuit controls the QBN node based on a third signal. N is a positive integer.

公开(公告)号：US11710453B2

公开(公告)日：2023-07-25

申请号：US17490153

申请日：2021-09-30

Applicant: Samsung Display Co., LTD.

Inventor： Chang-Soo Lee ,  Boyong Chung ,  Jonghee Kim

IPC: G09G3/3241 ,  G09G3/3291

CPC classification number: G09G3/3241 ,  G09G3/3291 ,  G09G2300/0842

Abstract: A pixel circuit including an organic light emitting diode, a first transistor configured to drive the organic light emitting diode, a second transistor electrically connected between a gate node of the first transistor and a data line, a third transistor electrically connected between a source node of the first transistor and an initialization voltage line and a storage capacitor electrically connected between the gate node and the source node of the first transistor. In a data writing period in which the storage capacitor is charged with electric charges, a turn-off time of the third transistor lags compared to a turn-off time of the second transistor.

公开(公告)号：US20220130334A1

公开(公告)日：2022-04-28

申请号：US17490153

申请日：2021-09-30

Applicant: Samsung Display Co., LTD.

Inventor： Chang-Soo LEE ,  Boyong Chung ,  Jonghee Kim

IPC: G09G3/3241 ,  G09G3/3291

Abstract: A pixel circuit including an organic light emitting diode, a first transistor configured to drive the organic light emitting diode, a second transistor electrically connected between a gate node of the first transistor and a data line, a third transistor electrically connected between a source node of the first transistor and an initialization voltage line and a storage capacitor electrically connected between the gate node and the source node of the first transistor. In a data writing period in which the storage capacitor is charged with electric charges, a turn-off time of the third transistor lags compared to a turn-off time of the second transistor.

公开(公告)号：US09697768B2

公开(公告)日：2017-07-04

申请号：US14747315

申请日：2015-06-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Haijung In ,  Boyong Chung

IPC: G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/0218 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2320/0238

Abstract: A display apparatus includes a plurality of pixel circuits, each outputting a driving current to an output node connected to an organic light-emitting diode based on a data signal. Each pixel circuit sequentially operate in an anode initialization period, a threshold voltage compensation period, a data write period, and an emission period. The pixel circuits are arranged in in multiple rows and multiple columns, and each pixel circuit includes an anode initialization transistor to output an initialization voltage to the output node based on a first control signal. A first control line connected to the anode initialization transistor of a pixel circuit in an odd row is different from the first control line connected to the anode initialization transistor of a pixel circuit in an even row.