Patent ID: 11862099
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A shift register unit, comprising a signal input circuit, an output circuit, a pull-down control circuit and a signal output terminal, wherein the output circuit comprises a pull-up sub-circuit and a pull-down sub-circuit,
the signal input circuit is configured to provide signals to a pull-up control terminal of the pull-up sub-circuit at different time periods;
the pull-up sub-circuit is configured to output a scanning signal via the signal output terminal under control of a signal received by the pull-up control terminal of the pull-up sub-circuit;
the pull-down sub-circuit comprises a plurality of pull-down control terminals, and is configured to pull down a potential of the signal output terminal under control of a valid pull-down control signal received by at least one of the pull-down control terminals of the pull-down sub-circuit;
the pull-down control circuit comprises a selection sub-circuit and a plurality of pull-down control sub-circuits, the pull-down control sub-circuits correspond to the pull-down control terminals in a one-to-one mode, and the selection sub-circuit is configured to selectively configure one of the pull-down control sub-circuits to provide the valid pull-down control signal to a corresponding one of the pull-down control terminals,
wherein the signal input circuit comprises a detection signal input sub-circuit and a display signal input sub-circuit,
the detection signal input sub-circuit is configured to provide a detection scanning control signal to the pull-up control terminal of the pull-up sub-circuit in a detection scanning signal output phase;
the display signal input sub-circuit is configured to provide a display scanning control signal to the pull-up control terminal of the pull-up sub-circuit in a display scanning output phase,
wherein the detection signal input sub-circuit comprises a detection trigger signal input sub-circuit, a detection signal output sub-circuit, a switch sub-circuit, a detection signal reset sub-circuit, and a first storage sub-circuit,
an output terminal of the detection trigger signal input sub-circuit is electrically coupled to a control terminal of the detection signal output sub-circuit, an input terminal of the detection trigger signal input sub-circuit is formed as an input terminal of the detection signal input sub-circuit, and the detection trigger signal input sub-circuit is configured to control the input terminal of the detection trigger signal input sub-circuit to be electrically coupled to or decoupled from the output terminal of the detection trigger signal input sub-circuit according to a signal received by the control terminal of the detection trigger signal input sub-circuit;
an input terminal of the detection signal output sub-circuit is electrically coupled to a second clock signal terminal, an output terminal of the detection signal output sub-circuit is electrically coupled to an input terminal of the switch sub-circuit, and the detection signal output sub-circuit is configured to control the input terminal of the detection signal output sub-circuit to be electrically coupled to or decoupled from the output terminal of the detection signal output sub-circuit according to a signal received by the control terminal of the detection signal output sub-circuit;
an output terminal of the switch sub-circuit is electrically coupled to the pull-up control terminal of the pull-up sub-circuit, and the switch sub-circuit is configured to control the input terminal of the switch sub-circuit to be electrically coupled to or decoupled from the output terminal of the switch sub-circuit according to a signal received by a control terminal of the switch sub-circuit;
an input terminal of the detection signal reset sub-circuit is electrically coupled to the second level signal terminal, an output terminal of the detection signal reset sub-circuit is electrically coupled to the control terminal of the detection signal output sub-circuit, a control terminal of the detection signal reset sub-circuit is electrically coupled to a detection reset signal terminal, and the detection signal reset sub-circuit is configured to control the input terminal of the detection signal reset sub-circuit to be electrically coupled to or decoupled from the output terminal of the detection signal reset sub-circuit according to a signal received by the control terminal of the detection signal reset sub-circuit; and
a first terminal of the first storage sub-circuit is electrically coupled to the control terminal of the detection signal output sub-circuit, and a second terminal of the first storage sub-circuit is electrically coupled to the second level signal terminal.