公开(公告)号：US20210375229A1

公开(公告)日：2021-12-02

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：US20250006112A1

公开(公告)日：2025-01-02

申请号：US18645394

申请日：2024-04-25

Applicant: Samsung Display Co., Ltd.

Inventor： TAE-SEOK HA ,  WOON-ROK JANG

IPC: G09G3/32

Abstract: A display device includes a display panel including a pixel, a gate driver to provide a scan signal and a sensing signal to the pixel, a data driver to provide a data voltage to the pixel, a power manager to provide an initialization voltage to the pixel, and a controller to control the gate driver, the data driver, and the power manager. The gate driver provides the scan signal and the sensing signal to the pixel in an active period, and provides the sensing signal to the pixel in an initialization period. The controller determines an overlapping period in which the active period and the initialization period overlap each other based on a progress time of the initialization period at a start time point of the active period. The power manager changes a voltage level of the initialization voltage in the overlapping period.

公开(公告)号：US20240062701A1

公开(公告)日：2024-02-22

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 ,  G09G3/3233 ,  G09G3/2007 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0673 ,  G09G2320/045 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2310/08 ,  G09G2320/0626 ,  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：US20230119488A1

公开(公告)日：2023-04-20

申请号：US17865336

申请日：2022-07-14

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: H01L27/32

Abstract: A display panel may include a plurality of pixels, a plurality of initialization lines for providing an initialization voltage to the plurality of pixels, a common line physically separated from the plurality of initialization lines, and a plurality of switching elements each including a first electrode connected to a respective one of the plurality of initialization lines and a second electrode connected to the common line.

公开(公告)号：US20220328001A1

公开(公告)日：2022-10-13

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：US20190180695A1

公开(公告)日：2019-06-13

申请号：US16117885

申请日：2018-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： TAE-SEOK HA ,  Kyung-hun Lee ,  Sucheol Kang ,  Jongwoon Kim ,  Kyu-jin Park ,  Sung-jae Park ,  Seung-woon Shin

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/36

Abstract: A display device includes a display panel including gate lines, data lines, and pixels individually connected to a corresponding gate line and data line, a gate driver driving the gate lines, a data driver driving the data lines, and a driving controller. The driving controller receives, from an external source, first image signals and a variable frequency signal indicating an operation frequency (frame rate) for the display device. The driving controller converts the first image signals to second image signals by adding a compensation value corresponding to the operation frequency to the first image signals, and outputs the second image signals to the data driver. Embodiments may compensate for luminance reduction/variation and reduce image artifacts that otherwise occur due to variable frequency operation. An alternative embodiment dynamically controls an amount of light output from a backlight according to the variable frequency signal.

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：US20220343825A1

公开(公告)日：2022-10-27

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

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：US20220270528A1

公开(公告)日：2022-08-25

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

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.