Patent ID: 7483004

Claim:
An organic light emitting display for displaying an image during a frame comprising a plurality of sub-frames, the organic light emitting display comprising a plurality of pixels coupled to a plurality of scan lines for supplying scan signals, a plurality of data lines for supplying data signals, and a plurality of power source lines, each of the pixels comprising: a frequency supplying line for supplying a frequency signal corresponding to a sub-frame among the plurality of sub-frames; a pixel circuit for outputting a current corresponding to an output obtained by applying a logical operation to a corresponding one of the data signals and the frequency signal; and an organic light emitting diode for emitting light based on the current outputted from the pixel circuit, wherein the pixel circuit comprises: a first transistor controlled by a corresponding one of the scan signals supplied to a corresponding one of the scan lines and for outputting the corresponding one of the data signals supplied to a corresponding one of the data lines; a logic gate for outputting an output signal obtained by applying a logical operation to an output from the first transistor and the frequency signal from the frequency supplying line; a second transistor for being turned on and off by the output signal of the logic gate and for supplying the current from a corresponding one of the power source lines to the organic light emitting diode; and a capacitor for storing the corresponding one of the data signals from the first transistor and for supplying the stored data signal to the logic gate, and wherein the logic gate comprises: a first input terminal coupled to an output electrode of the first transistor; a second input terminal coupled to the frequency supplying line; and an output terminal coupled to a gate electrode of the second transistor.