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    Pixel driving circuit and method for driving the same, display panel, and display device
    3.
    发明授权
    Pixel driving circuit and method for driving the same, display panel, and display device 有权

    公开(公告)号：US11568819B2

    公开(公告)日：2023-01-31

    申请号：US17857611

    申请日：2022-07-05

    申请人： WUHAN TIANMA MICROELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

    发明人： Jian Kuang ,  Xingyao Zhou ,  Yana Gao ,  Mengmeng Zhang ,  Gaojun Huang

    IPC分类号： G09G3/3258 ,  G09G3/3291

    摘要： A pixel driving circuit, a method for driving the same and a display panel are provided. In an embodiment, the pixel driving circuit includes: a driving circuit; a light-emitting circuit including a first electrode and a first reset circuit. In an embodiment, a working timing sequence of the pixel driving circuit includes working periods, one of which includes first and second light-emitting stages. In an embodiment, the first and second light-emitting stages each include a reset stage and a light-emitting stage, wherein, during the reset stage of the first light-emitting stage, the first reset circuit transmits a first reset voltage to the first electrode of the light-emitting circuit and during the reset stage of the second light-emitting stage, the first reset circuit transmits a modification reset voltage to the first electrode of the light-emitting circuit, the modification reset voltage being different from the first reset voltage.

    Output control device, output control circuit and display panel
    4.
    发明授权
    Output control device, output control circuit and display panel 有权

    公开(公告)号：US11410609B2

    公开(公告)日：2022-08-09

    申请号：US16997937

    申请日：2020-08-20

    申请人： Wuhan Tianma Micro-Electronics Co., Ltd. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

    发明人： Mengmeng Zhang ,  Yana Gao ,  Xingyao Zhou

    IPC分类号： G09G3/3266 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3208

    摘要： Provided is an output control device for providing control signals for a pixel circuit, which includes: a first output device configured to output a first control signal for controlling writing of a data signal into the pixel circuit, a second output device configured to output a second control signal for controlling a light emitting element to emit light, and a third output device configured to output a third control signal for controlling resetting of the light emitting element. A frequency of the third control signal is higher than a frequency of the first control signal. In a first period, the second control signal is an active level signal and the third control signal is an inactive level signal. In a second period, the second control signal is an inactive level signal and the third control signal is an active level signal.

    Display apparatus and method for driving the same
    7.
    发明授权
    Display apparatus and method for driving the same 有权

    公开(公告)号：US11756483B2

    公开(公告)日：2023-09-12

    申请号：US17930466

    申请日：2022-09-08

    申请人： WUHAN TIANMA MICROELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

    发明人： Yana Gao ,  Xingyao Zhou

    IPC分类号： G09G3/3233

    CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/021

    摘要： A display apparatus and a method for driving the same are provided. The display apparatus includes pixel circuits and a threshold detection module. The pixel circuit includes a driving transistor and a data voltage writing module including an output terminal electrically connected to the driving transistor. The threshold detection module is configured to detect a threshold voltage of the driving transistor. An operating process of the pixel circuit includes a first phase and a second phase. The first phase includes a data writing phase and a light-emitting phase. The second phase includes an adjusting phase and a light-emitting phase. The driving transistor receives a data voltage during the data writing phase. During the adjusting phase, the driving transistor receives an adjusting voltage corresponding to the threshold voltage of the driving transistor that is detected by the threshold detection module.

    Display panel and display apparatus
    10.
    发明授权
    Display panel and display apparatus 有权

    公开(公告)号：US11763734B2

    公开(公告)日：2023-09-19

    申请号：US17833385

    申请日：2022-06-06

    申请人： WUHAN TIANMA MICROELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

    发明人： Xingyao Zhou ,  Yana Gao ,  Wei Liu ,  Kang Yang ,  Jian Kuang

    IPC分类号： G09G3/00 ,  G09G3/32

    CPC分类号： G09G3/32 ,  G09G3/006 ,  G09G2300/0809 ,  G09G2330/12

    摘要： A display panel and a display apparatus are provided. The display panel includes data lines located in a display region, and a power bus, connection traces, and a control circuit that are located in a non-display region. The connection trace at least partially overlaps with the power bus in a direction perpendicular to a plane of the display panel, and has a first area that is an overlapping area between the connection trace and the power bus. The control circuit includes control transistors. A first electrode and/or a second electrode of the control transistor is coupled to the connection trace. The control transistors include a first control transistor and a second control transistor. The connection trace coupled to the first control transistor and the connection trace coupled to the second control transistor have different first areas. Channel areas of the first control transistor and the second control transistor are different.