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    Pixel circuit and driving method thereof, display panel, and display device
    14.
    发明授权
    Pixel circuit and driving method thereof, display panel, and display device 有权

    公开(公告)号：US11620935B2

    公开(公告)日：2023-04-04

    申请号：US16629097

    申请日：2019-01-04

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Minghua Xuan ,  Han Yue ,  Ning Cong

    IPC: G09G3/32

    Abstract: A pixel circuit and a driving method thereof, a display panel, and a display device are provided. The pixel circuit includes a light-emitting driving circuit, a storage circuit, and a data writing circuit, a first terminal of the storage circuit is respectively electrically connected to the data writing circuit and the light-emitting driving circuit, a second terminal of the storage circuit is configured to receive a control signal, and the storage circuit is configured to receive and store the first data voltage, to generate a first control voltage, that changes with time, according to the control signal and the first data voltage, and to cause the first control voltage to be applied to the light-emitting driving circuit to control a turn-on time of the light-emitting driving circuit; and the light-emitting driving circuit is configured to drive the light-emitting element to emit light under control of the first control voltage.

    Pixel circuit and driving method thereof, array substrate and display apparatus
    15.
    发明授权
    Pixel circuit and driving method thereof, array substrate and display apparatus 有权

    公开(公告)号：US11615747B2

    公开(公告)日：2023-03-28

    申请号：US16956200

    申请日：2019-08-14

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Can Wang ,  Han Yue ,  Can Zhang ,  Minghua Xuan ,  Ming Yang

    IPC: G09G3/3241

    Abstract: Disclosed are a pixel circuit and a driving method thereof, an array substrate and a display apparatus. The pixel circuit includes a pixel sub-circuit. The pixel sub-circuit includes a first adjusting circuit and a second adjusting circuit. The first adjusting circuit is configured to receive a first data signal and a light emitting control signal to control a magnitude of a driving current used for driving a light emitting element to emit light; the second adjusting circuit is configured to receive a second data signal and a time control signal to control a time duration in which the driving current is applied to the light emitting element; and the time control signal changes within a time period during which the light emitting control signal allows the driving current to be generated. The pixel circuit can control the time duration in which the driving current is applied to the light emitting element, so that the light emitting element can realize display of various grayscales by controlling the light emitting time of the light emitting element, on the premise that the light emitting element operates at a relatively high current density.

    Pixel driving circuit, pixel driving method and display device
    16.
    发明授权
    Pixel driving circuit, pixel driving method and display device 有权

    公开(公告)号：US11341898B2

    公开(公告)日：2022-05-24

    申请号：US16605384

    申请日：2019-03-26

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Han Yue ,  Minghua Xuan ,  Ning Cong ,  Xiaochuan Chen ,  Can Zhang ,  Can Wang ,  Ming Yang

    IPC: G09G3/32

    Abstract: A pixel driving circuit, a pixel driving method and a display device are provided. The pixel driving circuit includes a pixel sub-circuit and a power supply control sub-circuit, the pixel sub-circuit includes a first connection terminal, a second connection terminal and a light-emitting element, and is configured to respectively receive a first voltage and a second voltage to drive the light-emitting element to emit light. The power supply control sub-circuit is configured to, in a first state, control the first power supply terminal to provide the first voltage to the first connection terminal of the pixel sub-circuit, control the second power supply terminal to provide the second voltage to the second connection terminal of the pixel sub-circuit, and store energy; and in a second state, release the energy to the first connection terminal and the second connection terminal of the pixel sub-circuit to drive the light-emitting element to emit light.

    Pixel circuit, driving method, and display apparatus
    17.
    发明授权
    Pixel circuit, driving method, and display apparatus 有权

    公开(公告)号：US11276344B2

    公开(公告)日：2022-03-15

    申请号：US16484087

    申请日：2018-11-30

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Minghua Xuan ,  Han Yue ,  Xiaochuan Chen ,  Ning Cong

    IPC: G09G3/32

    Abstract: The present application discloses a pixel circuit for a light-emitting diode display panel. The pixel circuit includes a reset sub-circuit configured to initialize voltage levels of some nodes. Additionally, the pixel circuit includes a data-input and compensation sub-circuit configured to load a data signal and adjust the voltage levels of the nodes for determining a driving current flown through a driving sub-circuit. The pixel circuit further includes a voltage-control sub-circuit for controlling a switch sub-circuit to determine whether the driving current is flowing or not. Moreover, the pixel circuit includes an emission-control sub-circuit configured to control a partial time span in one scan for passing the driving current to the light-emitting diode to drive light emission. The one scan is one of multiple different scans in one cycle time of displaying one frame of image.

    Pixel driving circuit, pixel driving method, display panel and display device
    19.
    发明授权
    Pixel driving circuit, pixel driving method, display panel and display device 有权

    公开(公告)号：US11195463B2

    公开(公告)日：2021-12-07

    申请号：US16839590

    申请日：2020-04-03

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Han Yue ,  Minghua Xuan ,  Can Zhang ,  Can Wang ,  Ning Cong ,  Xiaochuan Chen

    IPC: G09G3/325 ,  G09G3/3291 ,  G09G3/36

    Abstract: A pixel driving circuit includes a current control circuit and a time control circuit, the current control circuit controls to generate a driving current, and outputs the driving current through a driving current output terminal, the time control circuit includes a first data writing-in circuit and a driving time control circuit. The first data writing-in circuit writes a first data voltage provided by a first data line to the driving time control circuit under the control of a first gate driving signal provided by a first gate line. The driving time control circuit is connected to a reference voltage terminal, the current control circuit, the first data writing-in circuit, and a light emitting element, and controls a light emitting time period of the light emitting element based on the reference voltage and the first data voltage, the reference voltage terminal is used to provide the reference voltage.

    Display device, driver circuit, and method for driving the same
    20.
    发明授权
    Display device, driver circuit, and method for driving the same 有权

    公开(公告)号：US11158242B2

    公开(公告)日：2021-10-26

    申请号：US16764804

    申请日：2019-12-16

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Han Yue ,  Xiaochuan Chen ,  Minghua Xuan ,  Jing Yu

    IPC: G09G3/32 ,  G09G3/20

    Abstract: A driving circuit for driving a target element with a driving current, including: a current source circuit connect to the target element and a first data line, wherein the current source circuit is configured to receive a first data signal through the first data line, and to control the magnitude of the driving current provided to the target element based on the first data signal; a time control circuit connected to the current source circuit, a second data line, and a pulse signal terminal, wherein the time control circuit is configured to receive a second data signal through the second data line, and to receive a periodic pulse signal via the pulse signal terminal, and to control the duration of the driving current provided to the target element in every driving period based on the second data signal and the periodic pulse signal.

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