A light emitting display having a pixel circuit for compensating driving voltage variation between pixels due to voltage drop in the voltage supply line. The light emitting display includes pixels, data lines extending in a first direction, through which a data signal is supplied to the pixels, scan lines extending in a second direction crossing the first direction, through which a selection signal is supplied to the pixels, a first power source line supplying driving voltage to the pixels, and a second power source line along the first direction supplying a compensating voltage to the pixels. The compensating voltage compensates for the drop of driving voltage across pixels that can cause non-uniformity in brightness of the display.