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

Claim 14:
15. A scan driver comprising a plurality of stages,
wherein each of the plurality of stages includes:
a first node controller connected between a first voltage input terminal, to which a first voltage of a first voltage level is applied, and a second voltage input terminal, to which a second voltage of a second voltage level is applied and configured to control voltage levels of a first control node and a second control node by using a start signal applied to an input terminal;
a second node controller configured to control a voltage level of a third control node according to the voltage level of the first control node; and
an output controller configured to output an output signal having the first voltage level or the second voltage level according to the voltage level of the third control node, and
wherein the second node controller includes:
a first control transistor connected between the first voltage input terminal and the first control node and having a gate connected to the second control node;
a second control transistor connected between the second voltage input terminal and the first control 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 third 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 third control node and having a first gate connected to the first control node.