Pixel and organic light emitting display using the same

An organic light emitting display, comprising:

• a scan driver for sequentially supplying a scan signal to scan lines, sequentially supplying an emission control signal to emission control lines, and sequentially supplying a control signal to control lines;
• a data driver for supplying a data signal to data lines corresponding to the scan signal;
• and
• pixels at crossing regions of the scan lines and the data lines,
• wherein a pixel positioned on an ith (i is a natural number) horizontal line from among the pixels comprises:
• an organic light emitting diode (OLED) having a cathode electrode coupled to a second power source;
• a first transistor for controlling an amount of current that flows from a first power source to the second power source via the OLED corresponding to the data signal;
• a second transistor coupled between the data line and a gate electrode of the first transistor and turned on when the scan signal is supplied to an ith scan line of the scan lines;
• a third transistor coupled between the gate electrode of the first transistor and a reference power source and turned off when the emission control signal is supplied to an ith emission control line of the emission control lines;
• a fourth transistor coupled between the third transistor and the reference power source and turned on when the control signal is supplied to an ith control line of the control lines;
• a fifth transistor coupled between an anode electrode of the OLED and an initial power source different from the first power source and turned on when the scan signal is supplied to the ith scan line;
• a first capacitor coupled between the anode electrode of the OLED and a node between the third transistor and the fourth transistor;
• and
• a second capacitor coupled between the node and the gate electrode of the first transistor.