公开(公告)号：US11263989B2

公开(公告)日：2022-03-01

申请号：US17101355

申请日：2020-11-23

Applicant: Samsung Display Co., Ltd.

Inventor： Seung-Woon Shin ,  Sang Won Kim ,  Jong Woon Kim ,  Kyu-Jin Park ,  Woon-Rok Jang ,  Tae-Seok Ha

IPC: G09G3/36

Abstract: A display device includes a display panel, a data driver, a gate driver, and a controller. The display panel includes a plurality of pixels. The data driver provides data voltages to the plurality of pixels through data lines during an active period of a frame period and provides a blank voltage to the plurality of pixels through the data lines during a blank period of the frame period. The gate driver provides a gate-on voltage to the plurality of pixels through gate lines during the active period and provides a gate-off voltage to the plurality of pixels through the gate lines during the blank period. The controller controls the data driver and the gate driver. The blank voltage increases and the gate-off voltage increases, when a time in the blank period reaches a predetermined time.

公开(公告)号：US11640791B2

公开(公告)日：2023-05-02

申请号：US17665853

申请日：2022-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： Tae-Seok Ha ,  Kyoungsoo Kim ,  Kyu-Jin Park ,  Sung-Jae Park ,  Seung-Woon Shin ,  Woon-Rok Jang

IPC: G09G3/3233

Abstract: A pixel includes a capacitor including a first electrode and a second electrode, a first transistor which generates a driving current, a second transistor which applies a data voltage to the first electrode of the capacitor, a third transistor which applies an initialization voltage to the second electrode of the capacitor, a fourth transistor which generates a leakage current in response to a dimming signal, and a light emitting element which emits light based on a residual driving current, where the residual driving current is obtained by subtracting the leakage current from the driving current.

公开(公告)号：US11415831B2

公开(公告)日：2022-08-16

申请号：US16896148

申请日：2020-06-08

Applicant: Samsung Display Co., Ltd.

Inventor： Seung-Woon Shin ,  Jongwoon Kim ,  Kyu-Jin Park ,  Woon-Rok Jang ,  Tae-Seok Ha

IPC: G02F1/13357 ,  G09G3/34 ,  G09G3/36 ,  G02F1/1362 ,  G02F1/1335

Abstract: A display device may include a backlight unit, a display panel, and a backlight driver, and a panel driver. The backlight unit may include light source blocks including a first light source block. The display panel may include dimming regions including a first dimming region and respectively overlapping the light source blocks. The first dimming region may overlap the first light source block. The backlight driver may control a turn-on period and a turn-off period of each of the light source blocks. The panel driver may sequentially provide scan signals to the dimming regions for controlling light transmission of the dimming regions. A turn-off period of the first light source block may start before a scan period of the first dimming region and may end after the scan period of the first dimming region. The first dimming region may receive corresponding scan signals in the scan period.

公开(公告)号：US11727835B2

公开(公告)日：2023-08-15

申请号：US17568289

申请日：2022-01-04

Applicant: Samsung Display Co., Ltd.

Inventor： Tae-Seok Ha ,  Kyoungsoo Kim ,  Kyu-Jin Park ,  Sung-Jae Park ,  Seung-Woon Shin ,  Ho Lee ,  Woon-Rok Jang

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G2310/0275 ,  G09G2330/028

Abstract: A pixel circuit includes a light emitting element including a first electrode and a second electrode, a first switching element including a control electrode, a second switching element, a third switching element, a sensing resistor and a fourth switching element. The first switching element applies a first power voltage to the first electrode of the light emitting element. The second switching element applies a data voltage to the control electrode of the first switching element. The third switching element senses a signal of the first electrode of the light emitting element. The sensing resistor includes a first end connected to the second electrode of the light emitting element and a second end which receives a second power voltage. The fourth switching element senses a signal of the second electrode of the light emitting element.

公开(公告)号：US11657749B2

公开(公告)日：2023-05-23

申请号：US17647470

申请日：2022-01-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tae-Seok Ha ,  Kyoungsoo Kim ,  Kyu-Jin Park ,  Sung-Jae Park ,  Seung-Woon Shin ,  Ho Lee ,  Woon-Rok Jang

IPC: G09G3/20 ,  G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/2007 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2310/0243 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display device includes a controller, a panel driver, and a voltage generator. The controller generates a first control signal and generates image data and a second control signal in response to first and second image signals. The panel driver generates a driving signal in response to the image data and the first control signal to drive a display panel. The voltage generator generates a driving voltage to drive the display panel and changes a voltage level of the driving voltage in response to the second control signal. The first image signal corresponds to a second frame located before a third frame in which the driving voltage is changed. The second image signal corresponds to a first frame located before the second frame. The controller generates image data corresponding to the second frame in response to the first image signal and the second image signal.

公开(公告)号：US12125421B2

公开(公告)日：2024-10-22

申请号：US18156568

申请日：2023-01-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tae-Seok Ha ,  Woon-Rok Jang

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2330/021 ,  G09G2330/12

Abstract: A display system includes a display device including a plurality of pixels and a sensing circuit that senses degradation information of the pixels, and a power supply that supplies a power to the display device or stops a supply of the power to the display device. The sensing circuit senses first degradation information of pixels in a first area in which a logo is displayed after the power supply supplies the power to the display device and before the display device displays a logo image including the logo, and senses second degradation information of pixels in a second area other than the first area in a display area after the display device displays the logo image and before the display device displays a normal image not including the logo.

公开(公告)号：US11636821B2

公开(公告)日：2023-04-25

申请号：US17170720

申请日：2021-02-08

Applicant: Samsung Display Co., Ltd.

Inventor： Tae-Seok Ha ,  Kyoungsoo Kim ,  Kyu-Jin Park ,  Seung-Woon Shin ,  Woon-Rok Jang ,  In-Won Jin

IPC: G09G3/36

Abstract: A gate driving circuit includes: a plurality of driving stages, each driving stage configured to provide a gate signal to a corresponding gate line among a plurality of gate lines, wherein each of the plurality of driving stages includes: a first transistor electrically connected between a first clock terminal and a gate output terminal, the first transistor including a gate electrode electrically connected to a first node, the first clock terminal to receive a first clock signal; a second transistor configured to transmit a first carry signal to the first node; and a third transistor electrically connected between the first node and a first voltage terminal, the third transistor including a gate electrode electrically connected to the first voltage terminal, the first voltage terminal to receive a first voltage, wherein the gate output terminal is electrically connected to the corresponding gate line.

公开(公告)号：US12008946B2

公开(公告)日：2024-06-11

申请号：US18328133

申请日：2023-06-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyu-Jin Park ,  Woon-Rok Jang ,  Tae-Seok Ha

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G09G3/2007 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2360/16

Abstract: A display device includes a display panel that displays an image, a panel driver that drives the display panel, and a driving controller that controls driving of the panel driver. The driving controller compensates first image data corresponding to a first area of the display panel where a still image is displayed during at least a predetermined time period, in a first compensation method to generate first compensation image data for the first area, and compensates second image data corresponding to a second area of the display panel different from the first area in a second compensation method different from the first compensation method that uses a load calculated based on previous image data.

公开(公告)号：US20230386375A1

公开(公告)日：2023-11-30

申请号：US18156568

申请日：2023-01-19

Applicant: SAMSUNG-DISPLAY CO., LTD.

Inventor： TAE-SEOK HA ,  Woon-Rok Jang

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G2310/08 ,  G09G2300/0842 ,  G09G2320/045 ,  G09G2330/12 ,  G09G2330/021

Abstract: A display system includes a display device including a plurality of pixels and a sensing circuit that senses degradation information of the pixels, and a power supply that supplies a power to the display device or stops a supply of the power to the display device. The sensing circuit senses first degradation information of pixels in a first area in which a logo is displayed after the power supply supplies the power to the display device and before the display device displays a logo image including the logo, and senses second degradation information of pixels in a second area other than the first area in a display area after the display device displays the logo image and before the display device displays a normal image not including the logo.

公开(公告)号：US11508317B2

公开(公告)日：2022-11-22

申请号：US17325453

申请日：2021-05-20

Applicant: Samsung Display Co., LTD.

Inventor： Tae-Seok Ha ,  Kyoung Soo Kim ,  Kyu-Jin Park ,  Seung-Woon Shin ,  Woon-Rok Jang

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A display device includes a display unit which includes pixels, an emission driver which applies an emission control signal for allowing the pixels to emit light, and a signal controller which receives a data enable signal including an active period and a blank period during which an image signal is inputted and outputs a control signal for controlling the emission driver such that an emission period of the pixels is changed in response to a blank period.