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    DISPLAY DRIVING CIRCUIT AND OPERATING METHOD OF DISPLAY DRIVING CIRCUIT
    1.
    发明申请
    DISPLAY DRIVING CIRCUIT AND OPERATING METHOD OF DISPLAY DRIVING CIRCUIT 有权

    公开(公告)号：US20250131877A1

    公开(公告)日：2025-04-24

    申请号：US18908330

    申请日：2024-10-07

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Taeksu KWON ,  Insuk Kim ,  Jeeyeon Eom

    IPC: G09G3/3225

    Abstract: A display driving circuit includes an operational amplifier configured to, in a first phase of a test period, charge a source line of a display panel based on a first voltage received through a first input terminal, and in a second phase of the test period, output a comparison result signal by comparing a second voltage received through the first input terminal with a source line voltage received through a second input terminal; a discharge circuit configured to discharge the source line in the second phase; switches configured to, in the first phase, connect an output terminal of the operational amplifier to the source line, and in the second phase, connect the discharge circuit to the source line and the second input terminal of the operational amplifier; and a control logic configured to control a bias current of the operational amplifier based on the comparison result signal.

    Display driving integrated circuit and display device including the same
    2.
    发明授权
    Display driving integrated circuit and display device including the same 有权

    公开(公告)号：US11244632B2

    公开(公告)日：2022-02-08

    申请号：US17026639

    申请日：2020-09-21

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jeeyeon Eom ,  Soonchan Kwon ,  Kyungjik Min ,  Yeongshin Jang ,  Jeonghoon Choi ,  Siwoo Kim ,  Jaeyoun Lee

    IPC: G09G3/00 ,  G09G3/3275 ,  G09G3/3258

    Abstract: A display driving integrated circuit includes a timing controller, a first source driver including a first inverting input, a first non-inverting input, and a first output, a second source driver including a second inverting input, a second non-inverting input, and a second output, and a switching circuit connected with the display panel through a first and second pads. Under control of the timing controller, the switching circuit performs one of a first switching operation of connecting the first inverting input and the first output with the first pad, connecting the second inverting input and the second output with the second pad, and applying first and second decoding voltages to the non-inverting inputs, respectively; and a second switching operation of applying a sensing reference voltage to the non-inverting inputs, and connecting the output terminals with an output node, and connecting the inverting inputs with one pad.

    DISPLAY DRIVER CIRCUIT AND DEFECT TESTING METHOD
    3.
    发明申请
    DISPLAY DRIVER CIRCUIT AND DEFECT TESTING METHOD 有权

    公开(公告)号：US20250124835A1

    公开(公告)日：2025-04-17

    申请号：US18742820

    申请日：2024-06-13

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jeeyeon Eom ,  In-Suk Kim ,  Yeonjeong Lee

    IPC: G09G3/00 ,  G09G3/3283 ,  G09G3/3291

    Abstract: An example display driving integrated circuit includes a gamma voltage generator, a source driver, gamma lines, a first transistor, and a second transistor. The gamma voltage generator generates gamma voltages. The source driver generates data signals based on the gamma voltages. The gamma lines connect the gamma voltage generator with the source driver, and transmit the gamma voltages. The first transistor and the second transistor connect to a first end and a second end of a first gamma line of the gamma lines. The first transistor includes a first gate for receiving a first signal. The second transistor includes a second gate for receiving a second signal. The first signal and the second signal are complementary to each other.

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