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    Display apparatus and method of driving display panel using the same
    31.
    发明授权
    Display apparatus and method of driving display panel using the same 有权

    公开(公告)号：US11257435B2

    公开(公告)日：2022-02-22

    申请号：US16931509

    申请日：2020-07-17

    Applicant: Samsung Display Co., Ltd.

    Inventor： HongSoo Kim ,  Sehyuk Park ,  Sangan Kwon ,  Jinyoung Roh ,  Sukhun Lee ,  Hyojin Lee ,  Junheyung Jung

    IPC: G09G5/10 ,  G09G3/3258 ,  G09G3/3291

    Abstract: A display apparatus includes a display panel, a gate driver, a data driver, and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to the display panel. The data driver outputs a data voltage to the display panel. The driving controller selectively determines a driving mode of the display apparatus between one of a normal driving mode and a low frequency driving mode, and determines a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage storing flicker values for grayscale values of the input image data and a data remapper converting the grayscale value of the input image data to decrease a size of a maximum frequency grayscale area corresponding to a maximum driving frequency in the low frequency driving mode.

    Display device performing still image detection, and method of operating the display device
    32.
    发明授权
    Display device performing still image detection, and method of operating the display device 有权

    公开(公告)号：US11170693B2

    公开(公告)日：2021-11-09

    申请号：US16788647

    申请日：2020-02-12

    Applicant: Samsung Display Co., Ltd.

    Inventor： Sehyuk Park ,  Hyojin Lee ,  Jinyoung Roh

    IPC: G09G3/20

    Abstract: A display device including a display panel including a plurality of pixels, and a driver configured to drive the display panel. The driver includes a dither configured to perform a dithering operation on image data including a plurality of pixel data for the plurality of pixels to generate dithered image data including a plurality of dithered pixel data respectively corresponding to the plurality of pixel data, and a still image detector configured to receive the dithered image data, to detect dither-irrelevant pixel data that are not changed from the plurality of pixel data by the dithering operation among the plurality of dithered pixel data, and to determine whether the dithered image data represent a still image by using the dither-irrelevant pixel data.

    Display device and driving method of the same
    33.
    发明授权
    Display device and driving method of the same 有权

    公开(公告)号：US11037507B2

    公开(公告)日：2021-06-15

    申请号：US16721564

    申请日：2019-12-19

    Applicant: Samsung Display Co., Ltd.

    Inventor： Sehyuk Park ,  Hyojin Lee ,  Hui Nam ,  Jinyoung Roh ,  Bong Hyun You ,  Eunho Lee

    IPC: G09G3/3275

    Abstract: A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low frequency.

    Display device
    35.
    发明授权
    Display device 有权

    公开(公告)号：US12062335B2

    公开(公告)日：2024-08-13

    申请号：US18323370

    申请日：2023-05-24

    Applicant: Samsung Display Co., Ltd.

    Inventor： Jinyoung Roh ,  Hae-Kwan Seo ,  Bon-Seog Gu ,  Jaekeun Lim

    IPC: G09G3/36 ,  G09G3/3233 ,  H10K59/121

    CPC classification number: G09G3/3233 ,  H10K59/1213 ,  G09G2300/0413 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861

    Abstract: A display device includes: a first light emitting element; a third light emitting element adjacent to the first light emitting element in a first direction; second light emitting elements respectively adjacent to the first and third light emitting elements in a second direction crossing the first direction; first pixel circuits respectively under the first and third light emitting elements; second pixel circuits respectively under the second light emitting elements; and a dummy pixel circuit in a dummy circuit area adjacent to a display area in which the first, second, and third light emitting elements and the first and second pixel circuits are arranged and connected to the third light emitting element, wherein the dummy pixel circuit has a width smaller than a width of each of the first pixel circuits in the second direction.

    Driving controller, display device having the same, and driving method of display device
    37.
    发明授权
    Driving controller, display device having the same, and driving method of display device 有权

    公开(公告)号：US11823607B2

    公开(公告)日：2023-11-21

    申请号：US17740290

    申请日：2022-05-09

    Applicant: Samsung Display Co., Ltd.

    Inventor： Hyojin Lee ,  Sehyuk Park ,  Eunho Lee ,  Jinyoung Roh ,  Hui Nam ,  Bong-Hyun You

    IPC: G09G3/3225 ,  G09G3/20

    CPC classification number: G09G3/2007 ,  G09G3/3225 ,  G09G2320/0247 ,  G09G2330/021

    Abstract: A driving controller of a display device, the controller including a segment divider configured to divide the image signal into a plurality of segments and define a predetermined number of adjacent segments among the plurality of segments as a segment block, an image signal adder configured to add up a gray scale value of the image signal of each of the predetermined number of adjacent segments and output the added-up gray scale values, an average gray scale calculator configured to receive the added-up gray scale values and output an average gray scale value, a correction circuit configured to output corrected added-up gray scale values obtained by adding a weight value to each of the added-up gray scale values on the basis of the average gray scale value, and a driving frequency determiner configured to determine the driving frequency of the display device on the basis of the corrected added-up gray scale values.

    Display device
    38.
    发明授权
    Display device 有权

    公开(公告)号：US11715419B2

    公开(公告)日：2023-08-01

    申请号：US17244095

    申请日：2021-04-29

    Applicant: Samsung Display Co., Ltd.

    Inventor： Sehyuk Park ,  Hongsoo Kim ,  Jinyoung Roh ,  Hyojin Lee ,  Jaekeun Lim

    IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  G09G3/36

    CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  G09G3/3677 ,  G09G2310/08 ,  G09G2320/0626 ,  G09G2330/021

    Abstract: A display device includes a display panel which defines first and second display areas, and includes pixels connected to data lines and scan lines, respectively, a data driving circuit which drives the data lines, a scan driving circuit which drives the scan lines, and a driving controller which receives an image signal and a control signal, control the data and scan driving circuits according to an operation mode, and output clock signals. In a multi-frequency mode, the scan driving circuit includes a first scan driving circuit corresponding to the first display area and a second scan driving circuit corresponding to the second display area. The second scan driving circuit sequentially drives first scan lines among scan lines corresponding to the second display area during a first frame, and sequentially drives second scan lines among scan lines corresponding to the second display area during a second frame.

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