The organic light emitting display

The present invention provides an organic light emitting display. The organic light emitting display includes display lines on which a plurality of pixels are formed, each of the plurality of pixel comprises a organic light emitting diode and a driving thin film transistor. In the image display period of a frame, in response to an image display gating pulse, the display lines are charged to the image display data voltages orderly. A sensing target display line among the display lines outputs a sensing voltage corresponding to changes in electrical characteristic of the driving TFT included in each pixel in response to a sensing gate pulse during a vertical blank period excluding the image display period from the one frame and then is charged to a luminance recovery data voltage. The sensing gate pulse is supplied in the same pulse shape as the image display gate pulse in a predetermined period for charging the luminance recovery data voltage.