Scan driver and driving method thereof

A display device comprising:

• a display part including a plurality of pixels;
• a timing controller configured to generate a first driving control signal, a second driving control signal, and a third driving control signal based on an input control signal;
• a scan driver configured to supply scan signals to the plurality of pixels based on the first driving control signal;
• a data driver configured to supply data signals to the plurality of pixels based on the second driving control signal;
• and
• an emission driver configured to supply emission control signals to the plurality of pixels based on the third driving control signal,
• wherein the scan driver comprises a plurality of stages,
• wherein each of the plurality of stages is configured to output a scan signal in response to a first clock signal and a second clock signal, and
• wherein the first and second clock signals have a same period, and phases of the first and second clock signals do not overlap each other,
• wherein each of the plurality of stages includes:
• an input portion controlling a voltage of a first node and a voltage of a second node based on signals supplied to a first input terminal and a second input terminal;
• a first signal processing portion that supplies a voltage of a second power source to a fourth node based on the voltage of the first node, or electrically connects the second node and the fourth node through a fifth node based on a voltage of a first power source;
• a second signal processing portion that includes a first transistor connected between a third node and a sixth node, and is connected to the first input terminal, the second input terminal, and the first power source to control a voltage of the third node based on an operation of the first transistor;
• and
• an output portion that controls a voltage applied to the third node to be less than or equal to the voltage of the first power source, and supplies the voltage of the first power source or the voltage of the second power source to an output terminal as the scan signal based on the voltage of the third node and a voltage of the fourth node.