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    Organic light emitting diode display device performing low frequency driving
    33.
    发明授权
    Organic light emitting diode display device performing low frequency driving 有权

    公开(公告)号：US11532279B2

    公开(公告)日：2022-12-20

    申请号：US17190962

    申请日：2021-03-03

    Applicant: Samsung Display Co., Ltd.

    Inventor： Sangan Kwon ,  Hyojin Lee ,  Jinyoung Roh ,  Sehyuk Park

    IPC: G09G5/10 ,  G09G3/3275 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/20

    Abstract: An OLED display device includes display panel and a panel driver. The panel driver receives input image data at an input frame frequency and determines whether the input image data represent a still image. When the input image data do not represent the still image, the panel driver drives the display panel at a first output frame frequency substantially equal to the input frame frequency. When the input image data represent the still image, the panel driver drives the display panel at a second output frame frequency lower than the input frame frequency for a low frequency driving time and drives the display panel at a third output frame frequency higher than the second output frame frequency for a high frequency insertion time determined by one of a panel characteristic of the display panel and a representative gray level of the input image data, after the low frequency driving time.

    Display device
    34.
    发明授权
    Display device 有权

    公开(公告)号：US11417268B2

    公开(公告)日：2022-08-16

    申请号：US17341323

    申请日：2021-06-07

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Sehyuk Park ,  Hyojin Lee ,  Hui Nam

    IPC: G09G3/32

    Abstract: A display device is capable of improving the image quality, the display device including: a display panel; a pixel on the display panel and including at least one light emitting element; a timing controller configured to receive an image data signal of the pixel and to compensate for a gray value of the image data signal based on the number of light emitting elements of the pixel to generate a compensated image data signal; and a data driver configured to select a compensation data signal corresponding to the compensated image data signal from the timing controller and to apply the compensation data signal to the pixel.

    Display apparatus and method of driving the same
    35.
    发明授权
    Display apparatus and method of driving the same 有权

    公开(公告)号：US11264446B2

    公开(公告)日：2022-03-01

    申请号：US16843637

    申请日：2020-04-08

    Applicant: Samsung Display Co., Ltd.

    Inventor： Hyo Jin Lee ,  Jinyoung Roh ,  Sehyuk Park ,  Sangan Kwon ,  Hui Nam

    IPC: G09G3/3291 ,  G09G5/18 ,  G06F3/041 ,  G06F1/3234 ,  G09G3/36 ,  H01L27/32 ,  G09G3/20

    Abstract: A display apparatus includes: a display panel configured to display an image based on input image data; a gate driver configured to output a gate signal to the display panel; a data driver configured to output a data voltage to the display panel; a driving controller configured to control an operation of the gate driver and an operation of the data driver, to determine a normal driving mode and a low frequency driving mode based on the input image data, and to determine a driving frequency of the display panel based on the input image data; and a touch driver configured to detect a touch event occurring on the display panel, and to output a touch interrupt signal representing the touch event to the driving controller.

    Pixel circuit
    38.
    发明授权
    Pixel circuit 有权

    公开(公告)号：US11094258B2

    公开(公告)日：2021-08-17

    申请号：US16932031

    申请日：2020-07-17

    Applicant: Samsung Display Co., Ltd.

    Inventor： Sehyuk Park ,  Joon-Chul Goh ,  Sangan Kwon ,  Jinyoung Roh ,  Hyojin Lee

    IPC: G09G3/325 ,  G09G3/3275

    Abstract: A pixel circuit includes: a main circuit including: a driving transistor that includes a gate terminal connected to a first node, a first terminal connected to a second node, and a second terminal connected to a third node; and an organic light-emitting element connected to the driving transistor and configured to control the organic light-emitting element by controlling a driving current corresponding to a data signal applied via a data line to flow into the organic light-emitting element; and a sub circuit including: a first compensation transistor that includes a gate terminal configured to receive a first gate signal, a first terminal connected to the first node, and a second terminal connected to a fourth node; and a second compensation transistor that includes a gate terminal configured to receive a second gate signal, a first terminal connected to the fourth node, and a second terminal connected to the third node.

    Pixel circuit
    39.
    发明授权
    Pixel circuit 有权

    公开(公告)号：US10977998B2

    公开(公告)日：2021-04-13

    申请号：US16943293

    申请日：2020-07-30

    Applicant: Samsung Display Co., Ltd.

    Inventor： Hyo Jin Lee ,  Joon-Chul Goh ,  Sangan Kwon ,  Hui Nam ,  Jin Young Roh ,  Sehyuk Park

    IPC: G09G3/3233 ,  G09G3/325 ,  G09G3/3275

    Abstract: A pixel circuit includes a main-circuit that controls an organic light-emitting element by controlling a driving current to flow into the organic light-emitting element and a sub-circuit including a first compensation transistor including a gate terminal which receives a first gate signal, a second compensation transistor including a gate terminal which receives a second gate signal, and an initialization transistor including a gate terminal which receives an initialization signal. Here, in a low-frequency driving mode, a driving frequency of the first gate signal is N hertz (Hz), a driving frequency of the initialization signal is N Hz, a driving frequency of the second gate signal is M Hz, the first compensation transistor and the initialization transistor are turned on during a first time duration in N non-light-emitting periods per second, and the second compensation transistor is turned on during a second time duration in M non-light-emitting periods per second.

    Display apparatus and driving method thereof
    40.
    发明授权
    Display apparatus and driving method thereof 有权

    公开(公告)号：US10068535B2

    公开(公告)日：2018-09-04

    申请号：US15050190

    申请日：2016-02-22

    Applicant: Samsung Display Co., Ltd.

    Inventor： Jaehyun Cho ,  Hongsoo Kim ,  Bon-seog Gu ,  Sehyuk Park ,  Cheolwoo Park ,  Ahyoung Son

    IPC: G09G3/36 ,  G09G3/34 ,  G09G3/20

    Abstract: A display apparatus comprises a display panel comprising a plurality of dimming areas, a light source unit configured to supply light to the display panel, a timing controller configured to receive a control signal and input data and to generate a gate control signal, a data control signal, and a light source control signal, a display panel driving unit configured to drive the display panel based on the gate and data control signals, and a light source driving unit configured to drive the light source unit based on the light source control signal, wherein based on the input data, the timing controller is configured to determine a first color of at least any one dimming area among the dimming areas and a second color in a complementary color relationship to the first color and to supply information on the first and second colors to the light source driving unit.

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