Patent ID: 11887683
Assignee: HEFEI BOE JOINT TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A shift register unit, comprising a pull-down node control circuit;
the pull-down node control circuit being electrically connected to an input terminal, a reset terminal, a first voltage terminal, a second voltage terminal and a pull-down node, respectively, and being configured to, under the control of an input signal provided by the input terminal and a reset signal provided by the reset terminal, control the pull-down node to be electrically conducted to the first voltage terminal or the second voltage terminal, and control to hold a potential of the pull-down node,
wherein the shift register unit further comprises a setting circuit, a pull-up node potential holding circuit, and N pull-up nodes;
the setting circuit comprises N setting sub-circuits connected in series with each other, wherein N is an integer greater than or equal to 2; the pull-up node potential holding circuit comprises N potential holding sub-circuits;
a control terminal of a first setting sub-circuit is electrically connected to the input terminal, a first terminal of the first setting sub-circuit is electrically connected to the first voltage terminal, a second terminal of the first setting sub-circuit is electrically connected to a first pull-up node, the first setting sub-circuit is configured to, under the control of the input signal, control the first pull-up node to be electrically conducted to the first voltage terminal;
a control terminal of an n-th setting sub-circuit is electrically connected to the input terminal, a first terminal of the n-th setting sub-circuit is electrically connected to an (n−1)-th pull-up node, a second terminal of the n-th setting sub-circuit is electrically connected to an n-th pull-up node; the n-th setting sub-circuit is configured to, under the control of the input signal, control the (n−1)-th pull-up node to be electrically conducted to the n-th pull-up node; n is an integer greater than 1 and less than or equal to N;
a first potential holding sub-circuit is electrically connected to the first pull-up node, and is configured to hold a potential of the first pull-up node;
an n-th potential holding sub-circuit is electrically connected to the n-th pull-up node, and is configured to hold a potential of the n-th pull-up node.