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    Display device and method of driving the same
    1.
    发明授权
    Display device and method of driving the same 有权

    公开(公告)号：US12205546B2

    公开(公告)日：2025-01-21

    申请号：US18416559

    申请日：2024-01-18

    Applicant: Samsung Display Co., LTD.

    Inventor： Sun-Koo Kang ,  Joonho Hyun

    IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233

    Abstract: A display device includes a display panel receiving an emission driving signal, and a panel driver driving the display panel in a mode in which the driving frequency is varied. The panel driver includes an emission driving circuit outputting the emission driving signal, a data driving circuit outputting a data signal, and a driving controller. The data driving circuit inverts a polarity of the data signal in units of at least one driving frame in response to a first option signal. The driving controller includes a counting circuit which counts an operation cycle of the emission driving circuit to output a count value, and a first option control circuit which compares the count value with a preset first threshold value and sets the first option signal to an active state or an inactive state according to a comparison result.

    Testable data driver and display device including the same
    3.
    发明授权
    Testable data driver and display device including the same 有权

    公开(公告)号：US09646561B2

    公开(公告)日：2017-05-09

    申请号：US14818352

    申请日：2015-08-05

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Jae-Han Lee ,  Sun-Koo Kang ,  Sooyeon Kim ,  Young-Il Ban

    IPC: G09G5/00 ,  G09G3/36 ,  G09G3/00

    CPC classification number: G09G3/3688 ,  G09G3/006 ,  G09G2300/0426 ,  G09G2310/027

    Abstract: A display device includes a display panel, a gate driver, a data driver, and a driving control unit. The display panel includes pixels connected to a corresponding one of gate lines and a corresponding one of data lines. The gate driver drives the gate lines. The data driver includes first pads and second pads. The first pads are connected to each of first data lines of the data lines, and the second pads are connected to each of second data lines of the data lines. The driving control unit provides control signals and a data signal to the data driver, and to control the gate driver. The data driver includes a digital-to-analog converter and a switching circuit. The digital-to-analog converter converts the data signal into analog signals. The switching circuit sequentially outputs the analog signals to the first pads during a test mode.

    Data driver, display apparatus having the same and method of driving the display apparatus
    5.
    发明授权
    Data driver, display apparatus having the same and method of driving the display apparatus 有权

    公开(公告)号：US09984643B2

    公开(公告)日：2018-05-29

    申请号：US15145172

    申请日：2016-05-03

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Young-Il Ban ,  Sun-Koo Kang ,  Tae-Gon Kim

    IPC: G09G3/36

    CPC classification number: G09G3/3688 ,  G09G3/3607 ,  G09G2300/0452 ,  G09G2310/027 ,  G09G2320/0673

    Abstract: A data driver includes a first data voltage generator, a data converter and a second data voltage generator. The first data voltage generator is configured to generate a first data voltage based on first pixel data and configured to output the first data voltage to a first data line, the first pixel data being generated based on a first gamma curve. The data converter is configured to convert second pixel data to first converted pixel data, the second pixel data being generated based on the first gamma curve, the first converted pixel data being generated based on a second gamma curve different from the first gamma curve. The second data voltage generator is configured to generate a second data voltage based on the first converted pixel data and configured to output the second data voltage to a second data line.

    Display device, and method of operating a display device
    7.
    发明授权
    Display device, and method of operating a display device 有权

    公开(公告)号：US11521558B2

    公开(公告)日：2022-12-06

    申请号：US17138017

    申请日：2020-12-30

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Won Tae Kim ,  Sun-Koo Kang

    IPC: G09G3/3275 ,  G09G3/3233

    Abstract: The present disclosure relates to a display device. The display device includes a display panel, data lines, a constant voltage line, a feedback line, and a display driver. The display panel includes pixels. The data lines transfer data voltages to the pixels. The constant voltage line transfers a constant voltage to the pixels. The feedback line is coupled to the constant voltage line. The display driver is configured to sense a change amount of the constant voltage through the feedback line, generate compensated image data by compensating image data according to the sensed change amount of the constant voltage, and provide the data voltages corresponding to the compensated image data to the pixels.

    Display apparatus and method of driving display panel using the same
    9.
    发明授权
    Display apparatus and method of driving display panel using the same 有权

    公开(公告)号：US10665148B2

    公开(公告)日：2020-05-26

    申请号：US15868581

    申请日：2018-01-11

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Sun-Koo Kang ,  Jae-Han Lee ,  Ok-Kwon Shin

    IPC: G09G3/20 ,  G09G3/36

    Abstract: A display apparatus includes a display panel, a first driver and a second driver. The display panel includes a plurality of gate lines and a plurality of data lines. The display panel is configured to display an image based on input image data. The first driver is configured to output compensating gate signals having the same timing to the gate lines during a first period and scan gate signals having different timings to the gate lines during a second period. The second driver is configured to apply a compensating data voltage corresponding to a compensating grayscale value to the data lines during the first period and a target data voltage corresponding to a target grayscale value to the data lines during the second period.

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