An organic light emitting display comprising: a scan driver for sequentially supplying a scan signal to a plurality of scan lines during each of a plurality of sub-frames included in one frame; a data driver for applying a data voltage to a plurality of data lines during at least one light emitting sub-frame of the plurality of sub-frames included in the one frame, and for applying a voltage corresponding to a black color to the plurality of data lines during at least one non-light emitting sub-frame of the plurality of sub-frames included in the one frame; and a pixel portion for displaying an image according to the scan signal supplied to the plurality of scan lines and according to the data voltage and the voltage corresponding to the black color applied to the plurality of data lines. wherein the pixel portion includes a plurality of red pixels connected to a plurality of scan lines and a red data line, a plurality of green pixels connected to the plurality of scan lines and a green data line, and a plurality of blue pixels connected to the plurality of scan lines and a blue data line, and for displaying one image during one frame; and the data driver is a data driver for supplying a data signal to the red data line during red light emitting sub-frames of the plurality of sub-frames included in the one frame and a signal corresponding to a black color to the red data line during non-red light emitting sub-frames of the plurality of sub-frames included in the one frame, for supplying the data signal to the green data line during green light emitting sub-frames of the plurality of sub-frames included in the one frame and the signal corresponding to the black color to the green data line during non-green light emitting sub-frames of the plurality of sub-frames included in the one frame, and for supplying the data signal to the blue data line during blue light emitting sub-frames of the plurality of sub-frames included in the one frame and the signal corresponding to the black color to the blue data line during non-blue light emitting sub-frames of the plurality of sub-frames include in the one frame, wherein the red light emitting sub-frames have a first number of sub-frames, the green light emitting sub-frames have a second number of sub-frames, and the blue light emitting sub-frames have a third number of sub-frames, and wherein at least one of the first number, the second number, and the third number is different from the remaining numbers. a scan driver for sequentially supplying a scan signal to a plurality of scan lines during each of a plurality of sub-frames included in one frame; a data driver for applying a data voltage to a plurality of data lines during at least one light emitting sub-frame of the plurality of sub-frames included in the one frame, and for applying a voltage corresponding to a black color to the plurality of data lines during at least one non-light emitting sub-frame of the plurality of sub-frames included in the one frame; and a pixel portion for displaying an image according to the scan signal supplied to the plurality of scan lines and according to the data voltage and the voltage corresponding to the black color applied to the plurality of data lines.