Gate drive circuits and display panels
AssigneeWuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorHuanxi Zhang
Life of this patent
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Abstract
The present application discloses a gate drive circuit and a display panel. The gate drive circuit includes a plurality of cascaded gate drive units. Each of the gate drive units includes a stage transmission signal selection circuit, a pull-up control circuit, a pulse number reduction circuit, a first inversion circuit, a first output stage and a second output stage, and can output a second gate control signal with a greater number of pulses and a first gate control signal with a less number of pulses.
Claims20
A gate drive circuit, comprising a plurality of cascaded gate drive units, wherein each of the gate drive units comprises:
- a stage transmission signal selection circuit, wherein a control terminal of the stage transmission signal selection circuit is electrically connected to a first wiring;
- a pull-up control circuit, wherein an input terminal of the pull-up control circuit is electrically connected to an output terminal of the stage transmission signal selection circuit;
- a pulse number reduction circuit, wherein an input terminal of the pulse number reduction circuit is electrically connected to an output terminal of the pull-up control circuit, and a control terminal of the pulse number reduction circuit is electrically connected to a reset line;
- a first inversion circuit, wherein a control terminal of the first inversion circuit is electrically connected to the output terminal of the pull-up control circuit;
- a first output stage, wherein a first control terminal of the first output stage is electrically connected to an output terminal of the pulse number reduction circuit, and a second control terminal of the first output stage is electrically connected to an output terminal of the first inversion circuit, and an output terminal of the first output stage is configured to output a first gate control signal;
- and
- a second output stage, wherein a control terminal of the second output stage is electrically connected to the output terminal of the pull-up control circuit, and an output terminal of the second output stage is configured to output a second gate control signal;
- wherein a number of pulses of the second gate control signal in one frame is greater than a number of pulses of the first gate control signal in one frame;
- and
- wherein each of the stage transmission signal selection circuit and the first inversion circuit has two different types of transistors.
Dependencies are inferred from the claim text.