Pixel and organic light emitting display using the same

An organic light emitting display, comprising:

• a scan driver configured to drive a plurality of first scan lines, a plurality of second scan lines, and a plurality of emission control lines;
• a data driver configured to supply a plurality of data signals to a plurality of data lines;
• and
• a plurality of pixels at crossing regions of the first scan lines and the data lines, the pixels being arranged in a plurality of horizontal lines,
• wherein each of the pixels in an ith horizontal line of the horizontal lines comprises:
• an OLED having a cathode electrode coupled to a second power source;
• a first transistor having a first electrode coupled to a first power source, the first transistor being configured to control a magnitude of a current supplied from the first power source to the second power source via a second electrode of the first transistor and the OLED in accordance with the data signal;
• and
• a plurality of second transistors serially coupled between a gate electrode of the first transistor and an ith power source line of a plurality of power source lines, the gate electrodes of the second transistors being coupled to an ith second scan line of the second scan lines,
• wherein a common node between the second transistors is electrically coupled to the first electrode or the second electrode of the first transistor.