Patent ID: 7839361

Claim:
A method of driving an organic light emitting display, the organic light emitting display having a plurality of data lines for transmitting data signals, a plurality of scan lines for transmitting scan signals, a plurality of emission control lines for transmitting emission control signals, and a plurality of pixels, the method comprising: receiving the data signals that enable the plurality of pixels to operate in a normal mode; shifting an initial emission control signal to generate a plurality of shift register signals; generating the emission control signals by performing logical AND operation on consecutive ones of the shift register signals; determining whether or not the plurality of pixels is receiving an operation signal within a first reference time; switching to a standby mode if the operation signal is not received within the first reference time; and after switching to the standby mode, determining whether or not the plurality of pixels receives the operation signal within a second reference time; and turning off the plurality of pixels if the plurality of pixels does not receive the operation signal within the second reference time, wherein during the normal mode a display operation by the plurality of pixels is performed in full color, and during the standby mode, a duty ratio of the emission control signals is adjusted to reduce pixel luminance.