Patent ID: 11972736
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A scan driver comprising a plurality of stages,
wherein each of the plurality of stages includes:
a first node controller connected between an input terminal to which a start signal is applied and a first control node and configured to control a voltage level of the first control node with a clock signal;
a second node controller configured to control a voltage level of a second control node according to the voltage level of the first control node; and
an output controller configured to output an output signal having a first voltage level or a second voltage level according to the voltage level of the second control node, and
wherein the second node controller includes:
a first control transistor connected between a first voltage input terminal, to which a first voltage of the first voltage level is applied, and a first node and having a gate connected to the second control node;
a second control transistor connected between a second voltage input terminal, to which a second voltage of the second voltage level is applied, and the first node and having a first gate connected to the second control node;
a third control transistor connected between the first voltage input terminal and the second control node and having a gate connected to the first control node; and
a fourth control transistor connected between the second voltage input terminal and the second control node and having a first gate connected to the first control node.