Stage circuit and organic light emitting display including the same

An organic light emitting display, comprising:

• a plurality of pixels connected to a plurality of scan lines and a plurality of data lines;
• a data driver configured to supply a data signal to the data lines;
• and
• a scan driver configured to supply a scan signal to the scan lines, wherein the scan driver comprises a plurality of stages connected each other, and each of the stages is connected to a corresponding scan line of the scan lines,
• wherein each of the stages comprises:
• an output unit configured to output a voltage of a first power source or a signal of a third input terminal to an output terminal, based on a voltage applied to a first node or a second node;
• a first driver configured to control a voltage at a third node, based on signals of a first input terminal, a second input terminal and the third input terminal;
• a second driver configured to control the voltage at the first node, based on the signal of the second input terminal and the voltage at the third node;
• and
• a first transistor connected between the second and third nodes and maintained in a turn-on state.