Patent ID: 11955087
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display device comprising:
scan lines;
pixels electrically connected to the scan lines; and
a scan driver including stages for supplying scan signals through the scan lines to the pixels,
wherein the stages include a stage that includes:
a first node setting unit configured to discharge a voltage of a first node at a logic low level when a scan start signal or a carry signal has a logic high level and a first clock signal or a second clock signal has the logic high level;
a second node setting unit configured to charge a voltage of a second node at the logic high level when the voltage of the first node has the logic low level, and configured to discharge the voltage of the second node at the logic low level when the voltage of the first node has the logic high level;
a third node setting unit configured to charge a voltage of a third node at the logic high level when the voltage of the second node has the logic low level, and configured to discharge the voltage of the third node at the logic low level when the voltage of the second node has the logic high level; and
an output unit configured to output a scan signal having the logic high level when the voltage of the third node has the logic low level, and configured to output a scan signal having the logic low level when the voltage of the third node has the logic high level,
wherein each of the first node setting unit and the third node setting unit includes at least one N-type transistor that comprises a back-gate electrode, and
wherein the scan driver further includes a first charge pump for supplying a first bias voltage to the back-gate electrode of the at least one N-type transistor included in each of the first node setting unit and the third node setting unit.