公开(公告)号：US20220139330A1

公开(公告)日：2022-05-05

申请号：US17358083

申请日：2021-06-25

Applicant: Samsung Display Co., Ltd.

Inventor： SANGAN KWON ,  SOON-DONG KIM ,  TAEHOON KIM ,  HUI NAM ,  JUNHEE MOON ,  EUN SIL YUN ,  CHANGNOH YOON

IPC: G09G3/3275 ,  G09G3/3266

Abstract: Provided is a display device. The display device includes a display panel that includes a first display region and a second display region, a data driving circuit configured to drive a plurality of data lines, a scan driving circuit configured to drive a plurality of scan lines, and a driving controller configured to control the data driving circuit and the scan driving circuit so as to operate the first display region and the second display region at different frequencies when an operation mode is a multi-frequency mode, wherein the driving controller changes the operation mode to a normal mode when a difference between an image signal of a current frame of the first display region and an image signal of a previous frame of the first display region is equal to or greater than a reference value during the multi-frequency mode.

公开(公告)号：US20220020303A1

公开(公告)日：2022-01-20

申请号：US17231388

申请日：2021-04-15

Applicant: Samsung Display Co., Ltd.

Inventor： SANGAN KWON ,  JINOH KWAG ,  SOON-DONG KIM ,  TAEHOON KIM ,  HUI NAM ,  BONGHYUN YOU ,  EUN SIL YUN ,  CHANGNOH YOON

IPC: G09G3/00 ,  G09G3/3275 ,  G09G3/3266 ,  G09G5/14

Abstract: A display device includes a driving controller which provides a first start signal and a second start signal corresponding to an operation mode to a scan driving circuit. The scan driving circuit includes a first scan driving circuit having first dummy driving stages and first driving stages which sequentially drive scan lines corresponding to a first display region among a plurality of scan lines in synchronization with the first start signal and a second scan driving circuit having second dummy driving stages and second driving stages which sequentially drive scan lines corresponding to a second display region among the plurality of scan lines in synchronization with the second start signal. The first dummy driving stages are disposed on a first side surface of the display panel and the second dummy driving stages are disposed on a second side surface of the display panel.

公开(公告)号：US20210390910A1

公开(公告)日：2021-12-16

申请号：US17461261

申请日：2021-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin-Wook YANG ,  SOON-DONG KIM ,  CHANGNOH YOON

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

Abstract: A display device includes a display unit including a first pixel, a second pixel disposed adjacent to the first pixel in a first direction, a third pixel disposed adjacent to the first pixel in a second direction crossing the first direction, and a fourth pixel disposed adjacent to the third pixel in the first direction. Each of the first to fourth pixels includes a first sub-pixel and a second sub-pixel. The display device further includes a data driver that outputs a plurality of data voltages, a selective output unit that outputs the data voltages to the first to fourth pixels in a different order for each of a plurality of frames, and a scan driver that outputs a first scan signal to the first and second pixels and outputs a second scan signal, which is delayed from the first scan signal, to the third and fourth pixels.

公开(公告)号：US20250054440A1

公开(公告)日：2025-02-13

申请号：US18666151

申请日：2024-05-16

Applicant: Samsung Display Co., LTD.

Inventor： CHANGNOH YOON ,  SANGAN KWON ,  SOON-DONG KIM ,  JIHYE KIM ,  TAEHOON KIM ,  MIN-KYU PARK

IPC: G09G3/3208

Abstract: An electronic device includes a display panel that operates in a normal mode, a multi-frequency mode, or a refresh mode, a driving controller, and a host generating and outputting a luminance information. In the multi-frequency mode, a display area defined in the display panel is divided into a first display area and a second display area, and the driving controller controls the first display area and the second display area so as to operate at different frequencies. In the normal mode, the driving controller controls the display area so as to operate at a normal frequency. In the refresh mode, the driving controller controls the display area so as to operate at the normal frequency during one frame. When the luminance information changes, the display panel operates in the refresh mode.

公开(公告)号：US20250029545A1

公开(公告)日：2025-01-23

申请号：US18613133

申请日：2024-03-22

Applicant: Samsung Display Co., Ltd.

Inventor： JIHYE KIM ,  SANGAN KWON ,  SOON-DONG KIM ,  TAEHOON KIM ,  SEOK HWAN ROH ,  CHANGNOH YOON

IPC: G09G3/32

Abstract: A display device which includes a display panel that includes a first display area and a second display area, and a driving controller. During a multi-frequency mode, the driving controller drives the first display area by using a first driving frequency and drives the second display area by using a second driving frequency. During the multi-frequency mode, when the second driving frequency changes from a first frequency to a second frequency, the driving controller drives the first display area and the second display area during at least one frame by using a base frequency, drives the first display area and the second display area during at least one second frame by using an intermediate frequency between the base frequency and the second frequency, and then drives the first display area by using the first driving frequency and drives the second display area by using the second frequency.

公开(公告)号：US20240331623A1

公开(公告)日：2024-10-03

申请号：US18740025

申请日：2024-06-11

Applicant: Samsung Display Co., LTD.

Inventor： JAEKEUN LIM ,  BON-SEOG GU ,  SANGAN KWON ,  SOON-DONG KIM ,  JINYOUNG ROH ,  HAE-KWAN SEO

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/021

Abstract: A display device includes a display panel including a pixel including a pixel circuit and a light emitting element, a plurality of scan lines connected to the pixel circuit, an emission control line connected to the pixel circuit, and a data line connected to the pixel circuit. The pixel circuit includes a first capacitor connected to a first node and a second node opposite to the first node, a first circuit portion that includes a first transistor connected between the data line and the first node and a second transistor connected between the first transistor and the first node, and a second circuit portion connected to the second node and the light emitting element. Before the light emitting element emits light, a reference voltage is provided to a third node between the first transistor and the second transistor.

公开(公告)号：US20240005868A1

公开(公告)日：2024-01-04

申请号：US18368946

申请日：2023-09-15

Applicant: Samsung Display Co., Ltd.

Inventor： SOON-DONG KIM ,  TAEHOON KIM ,  JIN-WOOK YANG ,  EUN SIL YUN ,  CHANGNOH YOON

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2310/0278 ,  G09G2330/021

Abstract: Disclosed is a display device including a display panel including a plurality of pixels and a voltage generator providing an anode initialization voltage to the pixels. The display panel is divided into a first display area operating at a first operating frequency and a second display area operating at a second operating frequency. While pixels, which correspond to the first display area, from among the plurality of pixels are driven, the anode initialization voltage has a first voltage level. While pixels in the second display area from among the plurality of pixels are driven, the anode initialization voltage has a second voltage level different from the first voltage level.

公开(公告)号：US20240005851A1

公开(公告)日：2024-01-04

申请号：US18368909

申请日：2023-09-15

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：US20230206856A1

公开(公告)日：2023-06-29

申请号：US18179345

申请日：2023-03-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： TAEHOON KIM ,  JOON-CHUL GOH ,  SOON-DONG KIM ,  HAE-KWAN SEO

IPC: G09G3/3266 ,  G09G3/3225

CPC classification number: G09G3/3266 ,  G09G3/3225 ,  G09G2300/0819 ,  G09G2310/0213 ,  G09G2330/021

Abstract: A scan driving circuit includes: a driving circuit configured to output a scan signal to an output terminal in response to clock signals and a carry signal; and a masking circuit configured to stop the driving circuit from outputting the scan signal in response to a masking signal and a signal indicating an operating state of the driving circuit.

公开(公告)号：US20230186833A1

公开(公告)日：2023-06-15

申请号：US17982889

申请日：2022-11-08

Applicant: Samsung Display Co., Ltd.

Inventor： TAEHOON KIM ,  SANGAN KWON ,  SOON-DONG KIM ,  HUI NAM ,  EUN SIL YUN ,  CHANGNOH YOON

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2007 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2330/021

Abstract: A display device includes a display panel, a data driver, a scan driver, and a light emitting driver. The display panel includes a first display area and a second display area. The display panel displays a first image on the first display area and the second display area in a first mode, and displays a second image on the first display area in a second mode. The light emitting driver activates emission control signals applied to the first display area and the second display area in the first mode. The light emitting driver activates emission control signals applied to the second display area during a first partial frame in the second mode, and maintains the emission control signals applied to the second display area in a deactivation state during a plurality of second partial frames in the second mode.