Abstract: The organic light emitting display includes a plurality of pixels positioned at intersections of scan lines, emission control lines, and data lines, a scan driver for sequentially supplying scan signals to the scan lines at a first driving frequency in order to select the pixels in units of horizontal lines, and an emission driver for sequentially supplying emission control signals to the emission control lines at a second driving frequency different from the first driving frequency in order to control emission of the pixels.

Abstract: A level shifter and a flat panel display comprising the same, with reduced power consumption. The level shifter includes: a first transistor to apply a first voltage to an output terminal in correspondence with a first input signal; a second transistor to apply a second voltage to an output terminal in correspondence with voltage applied between gate and source electrodes thereof; a third transistor to lower the voltage applied between the gate and source electrodes of the second transistor according to the first input signal; and a capacitor to keep the voltage applied between the gate and source electrodes of the second transistor to turn on the second transistor in correspondence with the second input signal.