Organic light emitting display including power source drivers configured to supply a plurality of voltage levels

An organic light emitting display comprising:

• a display unit comprising a plurality of pixels coupled to a plurality of scan lines, a plurality of first control lines, a plurality of second control lines, and a plurality of data lines;
• a control line driver configured to provide a first control signal and a second control signal to the plurality of pixels through the plurality of first control lines and the plurality of second control lines;
• a first power source driver configured to supply a first power to the plurality of pixels of the display unit;
• and
• a second power source driver configured to supply a second power to the plurality of pixels of the display unit,
• wherein the first power and the second power are applied to the pixels of the display unit to supply a voltage difference between the first power and second power, the voltage difference being computed by subtracting the voltage of the second power from the voltage of the first power, the voltage difference having at least three different voltage levels during one frame, the voltage of the first power having at least two different voltage levels during the one frame, and the voltage of the second power having at least two different voltage levels during the one frame, the at least two different voltage levels comprising a high voltage and a low voltage,
• wherein the data lines are configured to supply a plurality of data signals to the pixels during a scan period of the one frame,
• wherein the voltage of the first power and the voltage of the second power are at the high voltage of the at least two different voltage levels during the scan period, and
• wherein the first and second control signals and the first and second powers are concurrently provided to all of the pixels of the display unit.