公开(公告)号：US20230087545A1

公开(公告)日：2023-03-23

申请号：US17991197

申请日：2022-11-21

Applicant: Samsung Display Co., Ltd.

Inventor： CHANGNOH YOON ,  SOON-DONG KIM ,  SANGAN KWON ,  SEUNGJAE LEE ,  JUNHEYUNG JUNG

IPC: G09G3/3275 ,  G09G3/3266

Abstract: A display device includes a display panel including pixels connected to data lines and scan lines, a data driving circuit which drives the data lines, a scan driving circuit which drives the scan lines, and a driving controller divides the display panel into first and second display regions, controls the data driving circuit and the scan driving circuit to drive the first display region at a first driving frequency and to drive the second display region at a second driving frequency lower than the first driving frequency, and sets third driving frequencies respectively corresponding to horizontal lines in a boundary region, which is defined by a portion of the second display region adjacent to the first display region, during a multi-frequency mode. Each of the third driving frequencies has a frequency level between the first driving frequency and the second driving frequency.

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：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：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.

公开(公告)号：US20230026979A1

公开(公告)日：2023-01-26

申请号：US17719797

申请日：2022-04-13

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3208

Abstract: A display device includes: a display panel including pixels, a data driving circuit, a scan driving circuit which drives a plurality of first scan lines and a plurality of second scan lines, and a driving controller which controls the data driving circuit and the scan driving circuit to drive a first display area of the display panel at a first operating frequency and drive a second display area of the display panel at a second operating frequency lower than the first operating frequency while an operating mode is a multi-frequency mode. During the multi-frequency mode, first scan signals provided to first scan lines, which correspond to the second display area, of the plurality of first scan lines are maintained at inactive levels in predetermined frames, and second scan signals provided to the plurality of second scan lines transition to active levels at least twice in each of the predetermined frames.

公开(公告)号：US20220375412A1

公开(公告)日：2022-11-24

申请号：US17880734

申请日：2022-08-04

Applicant: Samsung Display Co., Ltd.

Inventor： TAEHOON KIM ,  SANGAN KWON ,  SOON-DONG KIM ,  HUI NAM ,  BONGHYUN YOU ,  CHANGNOH YOON ,  JAEKEUN LIM

IPC: G09G3/3266 ,  G09G3/3225

Abstract: Provided is a scan driver of a display device, and the scan driver includes a driving circuit and a masking circuit. The driving circuit includes a control circuit, a first output circuit, and a second output circuit. The control circuit outputs a first control signal and a second control signal. The first output circuit is connected to a first output terminal which outputs a first scan signal and a first voltage terminal and operates in response to a first control signal. The second output circuit is connected to a first output terminal and a second voltage terminal and operates in response to a second control signal. The masking circuit outputs a second scan signal to a second output terminal in response to the first control signal and the second control signal and is connected to an input terminal to which a masking signal is supplied.

公开(公告)号：US20220068216A1

公开(公告)日：2022-03-03

申请号：US17240111

申请日：2021-04-26

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3275 ,  G09G3/3266

Abstract: A display device includes a display panel, a data driving circuit which drives a plurality of data lines, a scan driving circuit which drives a plurality of scan lines, and a driving controller which controls the data driving circuit and the scan driving circuit such that the display panel is divided into a first display region and a second display region during a multi-frequency mode and the first display region and the second display region are respectively operated at different frequencies, where the driving controller changes an operation mode to a normal mode when a still image and a moving image are simultaneously displayed in the first display region during the multi-frequency mode and the duration of the still image reaches a predetermined time.

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.