Scan driver

A scan driver comprising:

• stage circuits, each of the stage circuits comprising:
• a first circuit comprising a control terminal connected to a first node, the first circuit being configured to selectively connect and disconnect a previous scan line of a previous stage circuit to a second node in accordance with a control signal;
• a second circuit comprising a control terminal connected to a clock signal line, the second circuit being configured to selectively connect one of a first power voltage line and a second power voltage line to the first node in accordance with a control signal;
• a third circuit comprising a control terminal connected to the second node, the third circuit being configured to selectively connect one of the first node and the second power voltage line to a third node in accordance with a control signal;
• a fourth circuit comprising a control terminal connected to the third node, the fourth circuit being configured to selectively connect one of the first power voltage line and the second power voltage line to a current scan line in accordance with a control signal;
• and
• a first capacitor connecting the control terminal of the third circuit and the second power voltage line.