PIXEL CIRCUIT AND DRIVING METHOD THEREOF, DISPLAY DEVICE AND DRIVING METHOD THEREOF

    公开(公告)号:US20220108655A1

    公开(公告)日:2022-04-07

    申请号:US17260746

    申请日:2020-03-31

    Abstract: A pixel circuit includes: pixel units, wherein each pixel unit includes a light-emitting element and a pixel driving circuit, the pixel driving circuit and the light-emitting element are electrically connected to a first node; a first compensation sub-circuit electrically connected to each pixel driving circuit, and configured to provide an initialization signal to the pixel driving circuit, obtain a voltage at the first node when the light-emitting element emits light via the pixel driving circuit, and generate a compensation data signal based on the voltage at the first node; and a second compensation sub-circuit electrically connected to each pixel driving circuit and configured to keep the voltage at the first node within a set operating voltage range of the light-emitting element. The pixel driving circuit is further configured to initialize the first node based on the initialization signal, and use the compensation data signal to drive the light-emitting element.

    Method of driving display device, including charge maintenance stage

    公开(公告)号:US12236865B2

    公开(公告)日:2025-02-25

    申请号:US17775964

    申请日:2021-06-17

    Abstract: A method of driving a display device, where the display device includes a display substrate including a plurality of rows of pixel circuits, and in each pixel circuit, a reset compensation circuit and a data writing circuit are connected at a second node, and the reset compensation circuit is connected to a reset control signal line and a first voltage input terminal; in a driving stage, driving a light emitting device OLED connected to each of other rows of pixel circuits except a last row of pixel circuits further includes a charge maintenance stage performed after a light emission voltage generation stage; and in the stable display stage, all light emitting devices OLED simultaneously emit light; where in the charge maintenance stage, the first voltage input terminal is disconnected from the second node by the reset compensation circuit in response to control of a reset control signal.

    DISPLAY PANEL
    19.
    发明公开
    DISPLAY PANEL 审中-公开

    公开(公告)号:US20230269981A1

    公开(公告)日:2023-08-24

    申请号:US18184673

    申请日:2023-03-16

    Inventor: Ziyang Yu Qian Li

    Abstract: A display panel includes a respective pixel driving circuit having a driving transistor, a first reset transistor, and a second reset transistor. First electrodes of adjacent first reset transistors respectively in adjacent pixel driving circuits along a first direction are connected by a first connecting line. First electrodes of adjacent second reset transistors respectively in the adjacent pixel driving circuits along the first direction are connected to each other by a second connecting line. The first connecting line and the second connecting line are in a semiconductor material layer. First electrodes of six adjacent first reset transistors respectively in six adjacent pixel driving circuits along the first direction are connected to three adjacent first node reset signal lines through three first vias. The first connecting line and the second connecting line extend along the first direction. The three adjacent first node reset signal lines extend along a second direction.

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