公开(公告)号：US20240221628A1

公开(公告)日：2024-07-04

申请号：US18602714

申请日：2024-03-12

Applicant: Samsung Display Co., LTD.

Inventor： JIN-WOOK YANG ,  SEHYUK PARK ,  DONGGYU LEE ,  JAE-HYEON JEON

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0267 ,  G09G2330/021

Abstract: A display device includes: a display panel which displays an image corresponding to each of a plurality of frames, and a source driver which drives the display panel. The plurality of frames includes a first frame operating at a first operating frequency, and a second frame operating at a frequency higher than the first operating frequency. The first frame includes a write cycle section, a hold cycle section, and a blank section including a standby section. The source driver operates in a normal driving mode during the write cycle section and the hold cycle section, and operates in a low-power driving mode during the standby section.

公开(公告)号：US20240038143A1

公开(公告)日：2024-02-01

申请号：US18132242

申请日：2023-04-07

Applicant: Samsung Display Co., LTD.

Inventor： JIN-WOOK YANG ,  SEHYUK PARK ,  DONGGYU LEE ,  JAE-HYEON JEON

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0267 ,  G09G2330/021

Abstract: A display device includes: a display panel which displays an image corresponding to each of a plurality of frames, and a source driver which drives the display panel. The plurality of frames includes a first frame operating at a first operating frequency, and a second frame operating at a frequency higher than the first operating frequency. The first frame includes a write cycle section, a hold cycle section, and a blank section including a standby section. The source driver operates in a normal driving mode during the write cycle section and the hold cycle section, and operates in a low-power driving mode during the standby section.

公开(公告)号：US20240005846A1

公开(公告)日：2024-01-04

申请号：US18108626

申请日：2023-02-12

Applicant: Samsung Display Co., Ltd.

Inventor： TAEHOON KIM ,  SEON YOUNG CHOI ,  SANGAN KWON ,  SOON-DONG KIM ,  JIN-WOOK YANG ,  CHANGNOH YOON

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0267 ,  G09G2380/02 ,  G09G2330/021

Abstract: A display panel of a display device is divided into a first display region and a second display region. The second display region includes a boundary region adjacent to the first display region and a non-boundary region opposite to the first display region with respect to the boundary region. The driving controller outputs the voltage control signal, such that the first voltage in a first high voltage level and the second voltage in a first low voltage level are generated when the first display region is driven. The driving controller outputs the voltage control signal, such that the first voltage in a second high voltage level lower than the first high voltage level and the second voltage in a second low voltage level higher than the first low voltage level are generated, when the non-boundary region of the second display region is driven.

公开(公告)号：US20230410723A1

公开(公告)日：2023-12-21

申请号：US18120627

申请日：2023-03-13

Applicant: Samsung Display Co., Ltd.

Inventor： SEHYUK PARK ,  DONGGYU LEE ,  JAE-HYEON JEON ,  JIN-WOOK YANG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2330/028 ,  G09G2320/0626 ,  G09G2300/0426 ,  G09G2300/0861 ,  G09G2320/0233

Abstract: A display device includes a display panel including a pixel which receives a luminance control voltage, a driving controller which receives an input image signal and a control signal and provides an output image signal to the display panel, and a voltage generator which generates the luminance control voltage in response to a voltage control signal from the driving controller. The driving controller determines a current operating frequency based on the control signal, and outputs the voltage control signal based on a difference value between the current operating frequency and a previous operating frequency and an operating time of the previous operating frequency when the current operating frequency is different from the previous operating frequency, where the luminance control voltage is changed from a first voltage level to a second voltage level based on the voltage control signal.

公开(公告)号：US20230301149A1

公开(公告)日：2023-09-21

申请号：US18200646

申请日：2023-05-23

Applicant: Samsung Display Co., Ltd.

Inventor： DONGGYU LEE ,  JIHYE KIM ,  JIN-WOOK YANG ,  JAE-HYEON JEON

IPC: H10K59/131 ,  H10K59/121

CPC classification number: H10K59/131 ,  H10K59/1213 ,  H10K59/1216

Abstract: A display device includes a display panel including a plurality of pixels. At least one of the pixel includes a light emitting diode, a first transistor connected between a power line receiving a power source voltage and an anode of the light emitting diode, a second transistor connected between a data line and a first reference node, a first capacitor connected between the power line and the first reference node, a second capacitor connected between the first reference node and a second reference node, a third transistor connected between the first refence node and a reference voltage line receiving a reference voltage, a fourth transistor connected between an initialization voltage line receiving an initialization voltage and a drain of the first transistor, and a fifth transistor connected between the drain of the first transistor and the anode of the light emitting diode.

公开(公告)号：US20240161693A1

公开(公告)日：2024-05-16

申请号：US18235998

申请日：2023-08-21

Applicant: Samsung Display Co., LTD.

Inventor： EUI-MYEONG CHO ,  YU-CHOL KIM ,  JIHYE KIM ,  JIN-WOOK YANG ,  SEONGOH YEOM ,  JAKYOUNG JIN

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display device includes a display panel which includes first and second pixels disposed in one pixel row, a first gate line connected to the first pixel, a second gate line connected to the second pixel, a first data line connected to the first pixel, and a second data line connected to the second pixel, a gate driver which provides a first gate signal and a second gate signal to the first gate line and the second gate line, respectively, and a data driver disposed adjacent to a first side of the display panel, where the data driver provides a data signal to the first data line. The first data line and the second data line are connected to each other at a second side of the display panel opposite to the first side of the display panel.

公开(公告)号：US20240144861A1

公开(公告)日：2024-05-02

申请号：US18370445

申请日：2023-09-20

Applicant: Samsung Display Co., LTD.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  JIN-WOOK YANG ,  Seongoh Yeom ,  EUI-MYEONG CHO ,  JAKYOUNG JIN

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: A display device includes a display panel, a gate driver, and a driving controller. The display panel includes a pixel. The gate driver applies an anode initialization signal to the pixel. The driving controller receives a horizontal synchronization signal, receives input image data at a variable frame frequency, and controls the gate driver. A frame period for the display panel includes a scan period and one or more hold periods, the driving controller generates a count value by counting a number of pulses of the horizontal synchronization signal, and determines a current frame period as the hold period when the count value exceeds a reference value, and a time length of the anode initialization signal in each of the one or more hold periods is longer than a time length of the anode initialization signal in the scan period.

公开(公告)号：US20240013724A1

公开(公告)日：2024-01-11

申请号：US18196659

申请日：2023-05-12

Applicant: Samsung Display Co., LTD.

Inventor： DONGGYU LEE ,  HONGSOO KIM ,  SEHYUK PARK ,  YOUNGHA SOHN ,  JIN-WOOK YANG ,  JAE-HYEON JEON

IPC: G09G3/3258 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2330/028 ,  G09G2310/08 ,  G09G2310/0264 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2300/0852

Abstract: An electronic device includes a display panel which includes a plurality of pixels and displays an image at each of multiple frames, a driving circuit which drives the multiple frames at multiple operating frequencies, a voltage generator which provides a voltage to the display panel, and a drive controller. The drive controller includes a representative frequency calculator which calculates a representative frequency, based on operating frequencies of ‘n’ number of frames before one frame of the multiple frames, and a compensating signal calculator which outputs a compensating signal, based on the representative frequency and a count number in the one frame. The drive controller transmits the compensating signal to the voltage generator, the voltage includes a reference voltage, the voltage generator generates the reference voltage based on the compensating signal, and the voltage generator provides the reference voltage to each of the plurality of pixels.

公开(公告)号：US20230178003A1

公开(公告)日：2023-06-08

申请号：US17890761

申请日：2022-08-18

Applicant: Samsung Display Co., Ltd.

Inventor： SOON-DONG KIM ,  SANGAN KWON ,  TAEHOON KIM ,  JIN-WOOK YANG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0267 ,  G09G2330/021

Abstract: A display device includes: a display panel including a plurality of pixels connected to a plurality of scan lines; a scan driving circuit, which drives the plurality of scan lines in synchronization with a clock signal; and a driving controller, which outputs the clock signal. While an operating mode is a multi-frequency mode, the driving controller comparts the display panel into a first display area and a second display area. A hold frame of the multi-frequency mode includes a first section during which the first display area is driven, and a second section during which the second display area is driven. The driving controller outputs the clock signal of a normal power mode during the first section and outputs the clock signal of a low-power mode during the second section.

公开(公告)号：US20220415254A1

公开(公告)日：2022-12-29

申请号：US17586054

申请日：2022-01-27

Applicant: Samsung Display Co., Ltd.

Inventor： JAE-HYEON JEON ,  DONGGYU LEE ,  JIN-WOOK YANG

IPC: G09G3/3233

Abstract: A pixel of a display device includes a light-emitting diode and a pixel circuit that provides a current corresponding to a data signal to the light-emitting diode in response to a plurality of scan signals and a light emission control signal. The light emission control signal includes a first section and a second section, the second section includes a light-emission-on section and a light-emission-off section, the light emission control signal has an active level in the light-emission-on section and has an inactive level in each of the first section and the light-emission-off section, and the light-emission-on section and the light-emission-off section of the light emission control signal may vary depending on a light emission ratio of a dimming mode.