Scan driver, light emitting driver, and driving method thereof

A scan driver comprising a plurality of scan driving blocks, each of the scan driving blocks including:

• an output terminal outputting a scan signal to a scan line;
• a first transistor transmitting a voltage of a power source to the output terminal;
• a second transistor transmitting a clock signal to the output terminal;
• and
• a third transistor, the third transistor and the second transistor each including a gate electrode directly connected in common to a node formed with a gate-on voltage turning on the second transistor, the third transistor further including one terminal connected to the power source, and another terminal connected to a gate electrode of the first transistor,
• wherein the plurality of scan driving blocks are sequentially arranged, and the node is connected to a sequence input terminal applied with the output signal of the previous arranged scan driving block or a scan start signal, and
• wherein the second transistor includes:
• the gate electrode connected to the node;
• one terminal connected to the input terminal for the clock signal;
• and
• another terminal connected to the output terminal.