公开(公告)号：US20230129065A1

公开(公告)日：2023-04-27

申请号：US17864798

申请日：2022-07-14

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3225

Abstract: A display device includes a display panel, a power supply unit, and a low frequency offset compensator. The display panel includes a plurality of pixels. The power supply unit generates a first initialization voltage and a second initialization voltage and provides the first initialization voltage and the second initialization voltage to the pixels. The low frequency offset compensator selectively applies an offset to the second initialization voltage when the display panel is driven at a low frequency.

公开(公告)号：US20230039688A1

公开(公告)日：2023-02-09

申请号：US17967206

申请日：2022-10-17

Applicant: Samsung Display Co., Ltd.

Inventor： SOON-DONG KIM ,  SANGAN KWON ,  TAEHOON KIM ,  HUI NAM ,  JUNHEYUNG JUNG

IPC: G09G3/3233 ,  G09G5/14 ,  G09G3/3266

Abstract: A display apparatus includes a display panel including a pixel to display an image based on input image data, a driving controller which determines a driving frequency of a first display area of the display panel to be a first driving frequency and determines a driving frequency of a second display area of the display panel to be a second driving frequency less than the first driving frequency when the first display area displays a moving image and the second display area of the display panel displays a still image, and an emission driver which outputs a moving image emission signal corresponding to the first driving frequency and a still image emission signal corresponding to the second driving frequency to the display panel. A width of a non-emission period of the still image emission signal is greater than a width of a non-emission period of the moving image emission signal.

公开(公告)号：US20220351659A1

公开(公告)日：2022-11-03

申请号：US17566385

申请日：2021-12-30

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/20

Abstract: A display apparatus is disclosed that comprises a display panel. The display panel includes a display region that includes a first display area and a second display area. A data driver is configured to provide a data voltage to the display region. A gate driver is configured to provide a compensation gate signal and an initialization gate signal to the display region. The gate driver includes a first stage and a second stage. A driving controller is configured to control the gate driver and the data driver. The driving controller is configured to determine a first driving frequency for the first display area and a second driving frequency for the second display area. The second stage is configured to provide the compensation gate signal having a pulse duration shorter than a pulse duration of the compensation gate signal provided to the display region by the first stage.

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.