公开(公告)号：US20230245619A1

公开(公告)日：2023-08-03

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

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

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：US20230077512A1

公开(公告)日：2023-03-16

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

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.

公开(公告)号：US20230073348A1

公开(公告)日：2023-03-09

申请号：US17864762

申请日：2022-07-14

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/3275 ,  G09G3/3266

Abstract: A display device includes a display panel, a data driver, a scan driver, and a driving controller. The display panel includes a first display area and a second display area, which operate at different frequencies from each other in a multi-frequency mode. The driving controller controls the data driver and the scan driver. The driving controller generates boundary compensation data by compensating for boundary image signals, which are input to correspond to a boundary area of the first display area in the multi-frequency mode and drives the data driver based on a compensation image signal including the boundary compensation data.

公开(公告)号：US20230067214A1

公开(公告)日：2023-03-02

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 ,  G09G5/14

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：US20220068220A1

公开(公告)日：2022-03-03

申请号：US17317071

申请日：2021-05-11

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3291 ,  G09G3/3266

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.

公开(公告)号：US20220028314A1

公开(公告)日：2022-01-27

申请号：US17202769

申请日：2021-03-16

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/00 ,  G09G3/3291 ,  G09G3/3233

Abstract: A display device includes a display panel including a first partial panel region and a second partial panel region, and a panel driver which drives the display panel. The panel driver determines a first driving frequency for the first partial panel region and a second driving frequency for the second partial panel region. In a case where the first driving frequency and the second driving frequency are different from each other, the panel driver sets a boundary portion including a boundary between the first partial panel region and the second partial panel region, and determines a third driving frequency for the boundary portion to be between the first driving frequency and the second driving frequency.

公开(公告)号：US20210056885A1

公开(公告)日：2021-02-25

申请号：US16989073

申请日：2020-08-10

Applicant: SAMSUNG DISPLAY CO, LTD

Inventor： SEHYUK PARK ,  HONG SOO KIM ,  SANGAN KWON ,  JINYOUNG ROH ,  HYO JIN LEE

IPC: G09G3/20 ,  G09G3/3291

Abstract: A display apparatus includes a display panel, a data driver and a driving controller. The display panel is configured to display an image based on input image data. The data driver is configured to output a data voltage to the display panel. The driving controller includes a frequency adjuster circuit configured to determine a driving frequency of the display panel, and a dithering circuit configured to change a grayscale value of the input image data according to frames. The frequency adjuster circuit is configured to determine the driving frequency of the display panel based on the input image data and based on whether the dithering part is activated.