公开(公告)号：US20230215360A1

公开(公告)日：2023-07-06

申请号：US17985550

申请日：2022-11-11

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  Seongoh Yeom ,  JAKYOUNG JIN

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

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2310/08 ,  G09G2300/0852 ,  G09G2300/0819 ,  G09G2320/043 ,  G09G2320/0233

Abstract: A display device comprises a display panel including a pixel, and a panel driver configured to receive input image data in a variable frame frequency in order to drive the display panel based on the input image data. A frame period for the display panel is divided into at least one scan period and at least one or more hold periods, and a time during which the pixel performs an anode initialization operation in each of the hold periods is longer than a time during which the pixel performs the anode initialization operation in the scan period.

公开(公告)号：US20210375192A1

公开(公告)日：2021-12-02

申请号：US17191588

申请日：2021-03-03

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/32

Abstract: A display device includes a display panel including a pixel, a voltage line supplying a power voltage to the pixel, and a reference voltage line supplying one of a reference voltage and the power voltage to the pixel; a mode selector configured to output one of a first selection signal and a second selection signal according to an operation mode of the display panel; and a switch configured to provide the reference voltage or the power voltage to the reference voltage line in response to one of the first selection signal and the second selection signal.

公开(公告)号：US20250006129A1

公开(公告)日：2025-01-02

申请号：US18882763

申请日：2024-09-12

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  Seongoh Yeom ,  JAKYOUNG JIN

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

Abstract: A display device comprises a display panel including a pixel, and a panel driver configured to receive input image data in a variable frame frequency in order to drive the display panel based on the input image data. A frame period for the display panel is divided into at least one scan period and at least one or more hold periods, and a time during which the pixel performs an anode initialization operation in each of the hold periods is longer than a time during which the pixel performs the anode initialization operation in the scan period.

公开(公告)号：US20230117873A1

公开(公告)日：2023-04-20

申请号：US17863893

申请日：2022-07-13

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  Seongoh YEOM ,  JAKYOUNG JIN

IPC: G09G3/32

Abstract: A display device includes a light-emitting device, a first transistor, and a second transistor connected between the first transistor and the light-emitting device and including a gate electrode which receives the emission control signal. When a driving frequency is a second frequency less than a first frequency, one frame includes an active period and a blank period, and during the active period, a pulse width of the emission control signal has a first value, and during the blank period, the pulse width of the emission control signal has a second value different from the first value.

公开(公告)号：US20240249661A1

公开(公告)日：2024-07-25

申请号：US18387293

申请日：2023-11-06

Applicant: Samsung Display Co., LTD.

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

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2096 ,  G09G3/32 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0294 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/028

Abstract: A display device includes a display panel including a plurality of pixels and a panel driver that drives the display panel in a first mode where an operating frequency is fixed, and a second mode where the operating frequency is variable. Each of the plurality of pixels includes a light-emitting element and a pixel driving circuit connected to a first electrode of the light-emitting element. The panel driver includes a driving controller that determines whether the operating frequency corresponds to one of predetermined compensation frequencies in the second mode, and outputs a voltage control signal depending on the determination result, and a voltage generator that changes a voltage level of an anode initialization voltage applied to the first electrode in response to the voltage control signal.

公开(公告)号：US20240203329A1

公开(公告)日：2024-06-20

申请号：US18588844

申请日：2024-02-27

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  YU-CHOL KIM ,  Seongoh YEOM ,  JAKYOUNG JIN

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/061

Abstract: A display device includes a light-emitting device, a first transistor, and a second transistor connected between the first transistor and the light-emitting device and including a gate electrode which receives the emission control signal. When a driving frequency is a second frequency less than a first frequency, one frame includes an active period and a blank period, and during the active period, a pulse width of the emission control signal has a first value, and during the blank period, the pulse width of the emission control signal has a second value different from the first value.

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：US20190279555A1

公开(公告)日：2019-09-12

申请号：US16298005

申请日：2019-03-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： TAEJIN KIM ,  JAKYOUNG JIN

IPC: G09G3/20 ,  G09G5/14

Abstract: A display apparatus includes a display panel configured to display an image. A gate driver is configured to output a plurality of gate signals to the display panel. A data driver includes a first area and a second area. The first area of the data driver includes a first channel group configured to output first data voltages in a first output sequence. The second area of the data driver includes a second channel grout configured to output second data voltages in a second output sequence opposite to the first output sequence.

公开(公告)号：US20240257720A1

公开(公告)日：2024-08-01

申请号：US18493977

申请日：2023-10-25

Applicant: Samsung Display Co., LTD.

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

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2360/16

Abstract: A luminance compensation method of a display device includes a first luminance for a reference grayscale at a first operating frequency and a second luminance for the reference grayscale at a second operating frequency are measured. A first reference value is calculated based on the first luminance and the second luminance, a first duty ratio of the initialization control signal is changed into a second duty ratio depending on a comparison result of the first reference value and a threshold value After the first duty ratio is changed into the second duty ratio, a third luminance for the reference grayscale is measured, and a second reference value is calculated based on the first luminance and the third luminance. A final duty ratio corresponding to the threshold value is calculated depending on a comparison result of the second reference value and the threshold value.