Stage circuit and scan driver using the same

A scan driver comprising stages respectively coupled to a plurality of scan lines for supplying a scan signal to the scan lines,

• wherein each of the stages comprises:
• an output unit comprising a first transistor coupled between a first power source and an output terminal of the stage, and having a gate electrode coupled to a first node, a second transistor coupled between the output terminal and a third input terminal of the stage, and having a gate electrode coupled to a second node, and a third transistor coupled between the output terminal and a second power source having a lower voltage than that of the first power source, and having a gate electrode coupled to a third node;
• a progressive driver coupled to first, second, and sixth input terminals of the stage, the progressive driver being configured to progressively output the scan signal by controlling voltages at the first, second, and third nodes during a first period;
• and
• a concurrent driver coupled to at least one of fourth and fifth input terminals of the stage, the concurrent driver being configured to concurrently supply the scan signal by controlling the voltages at the first, second, and third nodes during a second period,
• wherein clock signals supplied to the first, second, and third input terminals during the second period are concurrently set to a gate-on or gate-off voltage.