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    Scan driver
    21.
    发明授权
    Scan driver 有权

    公开(公告)号：US11417264B2

    公开(公告)日：2022-08-16

    申请号：US17320372

    申请日：2021-05-14

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Jae Keun Lim ,  Jin Young Roh ,  Se Hyuk Park ,  Hyo Jin Lee

    IPC: G09G3/20

    Abstract: A scan driver stage including: a first transistor including a gate connected to a first clock, a first electrode connected to a carry terminal, and a second electrode connected to a first node; a second transistor including a gate connected to a second clock, a first electrode connected to a carry terminal, and a second electrode connected to the first node; a third transistor including a gate connected to the first node and a first electrode connected to a second node; a fourth transistor including a gate connected to the second clock, a first electrode connected to power, and a second electrode connected to the second node; a fifth transistor including a gate connected to the first clock, a first electrode connected to power, and a second electrode connected to the second node; and an output outputting first and second scan signals based on first and second node voltages.

    PIXEL AND RELATED ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE
    22.
    发明申请
    PIXEL AND RELATED ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE 有权

    公开(公告)号：US20210110771A1

    公开(公告)日：2021-04-15

    申请号：US16868463

    申请日：2020-05-06

    Applicant: Samsung Display Co., Ltd.

    Inventor： Hyo Jin Lee ,  Sangan Kwon ,  Jin Young Roh ,  Sehyuk Park

    IPC: G09G3/3258

    Abstract: A pixel of a display device includes a capacitor; a light emitting diode; and first, second, third, and fourth transistors. The display device has a normal frequency mode and a low frequency mode. Two electrodes of the capacitor are respectively connected to a first voltage source and a gate node. A gate electrode of the first transistor is connected to the gate node. In a hold period in the low frequency mode, both the second and third transistors receive a scan signal, the third transistor diode-connects the first transistor, the fourth transistor receives an initialization signal and transfers an initialization voltage to the gate node, the scan signal is at a first off voltage level, and the initialization signal is at a second off voltage level unequal to the first off voltage level. The cathode of the light emitting diode is connected to a second voltage source.

    DISPLAY DEVICE AND DRIVING METHOD OF THE SAME
    28.
    发明申请
    DISPLAY DEVICE AND DRIVING METHOD OF THE SAME 有权

    公开(公告)号：US20230018362A1

    公开(公告)日：2023-01-19

    申请号：US17706519

    申请日：2022-03-28

    Applicant: Samsung Display Co., LTD.

    Inventor： Se Hyuk Park ,  Jin Young Roh ,  Woo Mi Bae ,  Hae Kwan Seo ,  Young Ha Sohn ,  Jin Wook Yang

    IPC: G09G3/20

    Abstract: A display device includes: a data driver for supplying a data signal to output lines; a demultiplexer connected to each of the output lines, the demultiplexer to supply the data signal supplied to each output line to a first data line and a second data line; first pixels disposed in a (2j−1)-th column and a (2k−1)-th row, the first pixels being connected to the first data line, wherein j and k are positive integers; second pixels disposed in the (2j−1)-th column and a (2k)-th row, the second pixels being connected to the second data line; third pixels disposed in a (2j)-th column and the (2k−1)-th row, the third pixels being connected to the first data line; and fourth pixels disposed in the (2j)-th column and the (2k)-th row, the fourth pixels being connected to the second data line.

    Display device and method of driving display device
    29.
    发明授权
    Display device and method of driving display device 有权

    公开(公告)号：US11335234B1

    公开(公告)日：2022-05-17

    申请号：US17409865

    申请日：2021-08-24

    Applicant: Samsung Display Co., Ltd.

    Inventor： Se Hyuk Park ,  Jae Keun Lim ,  Hong Soo Kim ,  Jin Young Roh ,  Hyo Jin Lee

    IPC: G09G3/20

    Abstract: A display device according to an embodiment of the disclosure includes a timing controller, a scan driver including a plurality of stages connected to a plurality of clock signal lines and generating a plurality of scan signals in response to the scan start signal, a data driver configured to generate a plurality of data signals based on the image data, and a pixel portion including a plurality of pixels. One stage in the scan driver transmits a carry signal to 2n-th next stage. The timing controller selects any one of a normal frequency and low frequencies lower than the normal frequency as a driving frequency based on the input image data, and adjusts a clock duty of the plurality of clock signals so that a time required to output all of the plurality of scan signals during one frame is constant irrespective of the driving frequency.

    Display device performing adaptive refresh
    30.
    发明授权
    Display device performing adaptive refresh 有权

    公开(公告)号：US11227555B2

    公开(公告)日：2022-01-18

    申请号：US17171428

    申请日：2021-02-09

    Applicant: Samsung Display Co., Ltd.

    Inventor： Se Hyuk Park ,  Hong Soo Kim ,  Jin Young Roh ,  Hyo Jin Lee ,  Jae Keun Lim

    IPC: G09G3/3275

    Abstract: A display device includes a display panel including a plurality of pixels, a data driver which provides data signals to the plurality of pixels, and a controller which controls the data driver. The controller writes frame data to a frame memory, reads the frame data in each of a plurality of frame periods, performs in a first frame period of the plurality of frame periods a still image detection operation that determines whether the frame data represent a still image, and does not performs the still image detection operation in a second frame period of the plurality of frame periods subsequent to the first frame period.

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