Patent ID: 8593448

Claim:
An organic light emitting display, comprising: a driver IC configured to drive a pixel unit and to generate a control signal in accordance with an ambient temperature; and a DC-DC converter configured to generate a first power source and a second power source from an input voltage, wherein the DC-DC converter includes a booster circuit that boosts the input voltage to generate the first power source and an inverter circuit that inverts the input voltage to generate the second power source, wherein the control signal from the driver IC is input to an enable terminal of the DC-DC converter, a magnitude of a voltage of the second power source being determined in accordance with the control signal, wherein the second power source changes from a first voltage to a second voltage over a plurality of evenly spaced step intervals when black data and image data is input, and wherein a voltage change from the first voltage to the second voltage has a smaller voltage difference at each step interval during a period of black data input than during a period of image data input.