公开(公告)号：US11942043B2

公开(公告)日：2024-03-26

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

CPC classification number: G09G3/3275 ,  G09G3/3266 ,  G09G2310/0278

Abstract: Provided is a display device. The display device includes a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines, a data driving circuit configured to drive the plurality of data lines, a scan driving circuit configured to drive the plurality of scan lines, and a driving controller configured to divide the display panel into a first display region and a second display region during a multi-frequency mode, and control the data driving circuit and the scan driving circuit so as to drive the first display region at a first driving frequency and drive the second display region at a second driving frequency lower than the first driving frequency, wherein, during the multi-frequency mode, the driving controller sets a frequency for each of horizontal lines in a boundary region, which is adjacent to the first display region, in the second display region to a third driving frequency between the first driving frequency and the second driving frequency.

公开(公告)号：US11929020B2

公开(公告)日：2024-03-12

申请号：US18084559

申请日：2022-12-20

Applicant: Samsung Display Co., Ltd.

Inventor： Changnoh Yoon ,  Sangan Kwon ,  Soon-Dong Kim ,  Taehoon Kim

IPC: G09G3/3208 ,  G09G3/3233 ,  G09G5/10

CPC classification number: G09G3/3208 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0245 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0686 ,  G09G2330/028 ,  G09G2360/16

Abstract: A display device includes a display panel, a power supply unit, a voltage adjustment signal provider, and a data adjustment signal provider. The display panel includes a first display area and a second display area. The power supply unit is configured to provide a first initialization voltage and a second initialization voltage to the display panel. The voltage adjustment signal provider is configured to provide an adjustment signal to the power supply unit for applying an adjustment voltage to the second initialization voltage when the second display area is driven at a frequency lower than at least one of a predetermined frequency and a driving frequency of the first area. The data adjustment signal provider is configured to provide a data adjustment signal for adjusting gray levels of some pixels included in the first display area when the adjustment voltage is applied to the second initialization voltage.

公开(公告)号：US11887539B2

公开(公告)日：2024-01-30

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

CPC classification number: G09G3/3233 ,  G09G5/14 ,  G09G3/3266 ,  G09G2310/0243 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/10

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：US11869400B2

公开(公告)日：2024-01-09

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

CPC classification number: G09G3/20 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2340/0435

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：US11699400B2

公开(公告)日：2023-07-11

申请号：US17864902

申请日：2022-07-14

Applicant: Samsung Display Co., LTD.

Inventor： Hae-Kwan Seo ,  Seongheon Cho ,  Soon-Dong Kim ,  Taehoon Kim

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

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/0238 ,  G09G2330/021

Abstract: A scan driving circuit of a display device includes a first output terminal electrically connected to a first scan line, a second output terminal electrically connected to a second scan line, a first masking circuit electrically connecting the first output terminal and the second output terminal and outputting, as a first scan signal, a second scan signal to the first output terminal, a driving circuit outputting the second scan signal to the second output terminal in response to clock signals and a carry signal, and a second masking circuit masking the second scan signal to a predetermined level in response to the second masking signal, wherein the first masking circuit electrically disconnects the first output terminal from the second output terminal in response to a first masking signal.

公开(公告)号：US11004400B2

公开(公告)日：2021-05-11

申请号：US16746297

申请日：2020-01-17

Applicant: Samsung Display Co., Ltd.

Inventor： Changnoh Yoon ,  Soon-Dong Kim ,  Jin-Wook Yang

IPC: G09G3/3275 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a gray group data generator configured to receive current line data for pixels in a current row, and to generate current row gray group data based on the current line data, a horizontal crosstalk determiner configured to determine whether horizontal crosstalk occurs in the current row, a horizontal crosstalk compensator configured to compare the current row gray group data with adjacent row gray group data when the horizontal crosstalk is determined to occur in the current row, and to selectively adjust a plurality of gamma reference voltages according to a result of the comparison between the current row gray group data and the adjacent row gray group data, and a data driver configured to generate and provide data voltages corresponding to the current line data based on the selectively adjusted plurality of gamma reference voltages.

公开(公告)号：US12249275B2

公开(公告)日：2025-03-11

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: G09G3/00 ,  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：US12046198B2

公开(公告)日：2024-07-23

申请号：US17981599

申请日：2022-11-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sangan Kwon ,  Hui Nam ,  Soon-Dong Kim ,  Changnoh Yoon ,  Seungjae Lee

IPC: G09G3/3233 ,  G09G3/00 ,  G09G5/14

CPC classification number: G09G3/3233 ,  G09G5/14 ,  G09G3/035 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2310/0213 ,  G09G2320/10

Abstract: A display device includes a plurality of pixels arranged in m rows and n columns, where the pixels receive write scan signals, data voltages and compensation scan signals, a plurality of write scan lines which provides the write scan signals to the pixels, a plurality of data lines which provides the data voltages to the pixels, and a plurality of compensation scan lines which provides the compensation scan signals to the pixels, wherein in h-th to p-th frames, the data voltages are applied to pixels arranged in first to i-th rows, and in h-th to (h+k)-th frames, the data voltages are applied to pixels of a row unit by increasing sequentially the number of the row unit to which the data voltages are applied in at least one row unit from an i-th row to an (i+1)-th row.

公开(公告)号：US11908380B2

公开(公告)日：2024-02-20

申请号：US17956111

申请日：2022-09-29

Applicant: Samsung Display Co., Ltd.

Inventor： Soon-Dong Kim ,  Taehoon Kim ,  Jin-Wook Yang ,  Changnoh Yoon

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/2096 ,  G09G3/32 ,  G09G2300/0819 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/08 ,  G09G2330/028

Abstract: A display device includes a display panel including a first pixel connected to a first initialization scan line and a first compensation scan line and a second pixel connected to a second initialization scan line and a second compensation scan line, a scan driving circuit which provides a first initialization scan signal to the first initialization scan line and the second initialization scan line in common and provides a first compensation scan signal and a second compensation scan signal to the first compensation scan line and the second compensation scan line, and a driving controller which controls the scan driving circuit. A delay time from a time point at which the first initialization scan signal transitions from an active level to an inactive level to a time point at which the first compensation scan signal transitions from the inactive level to the active level is less than one horizontal period.

公开(公告)号：US11854496B2

公开(公告)日：2023-12-26

申请号：US17981762

申请日：2022-11-07

Applicant: Samsung Display Co., Ltd.

Inventor： Soon-Dong Kim ,  Sangan Kwon ,  Changnoh Yoon ,  Seungjae Lee

IPC: G09G3/3291 ,  G09G3/3266

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2310/027 ,  G09G2320/0285

Abstract: The display device includes a display panel in which a first display area and a second display area adjacent to the first display area are defined, a data driving circuit which drives the plurality of data lines, a scan driving circuit which drives the plurality of scan lines, and a driving controller which receives an image signal and a control signal, and controls the data driving circuit and the scan driving circuit based on an operation mode, where the driving controller includes a luminance deviation compensation unit which compensates for luminance deviation of the first display area and the second display area when the operation mode is a multi-frequency mode in which the first display area is driven at a first frequency and the second display area is driven at a second frequency different from the first frequency.