A display device includes a plurality of scanning lines (X.sub.1-X.sub.m), a plurality of signal lines (Y.sub.1-Y.sub.n), a scanning driver (5) which sequentially supplies to the scanning lines selection signals that select the scanning lines, a data driver (3) which supplies a designation current to the plurality of signal lines within a selection period when the scanning lines are being selected, a plurality of pixel circuits which supplies a driving current corresponding to a current value of the designation current that flows to the signal lines, a plurality of optical elements (E.sub.1,1-E.sub.m,n) which emit light in accordance with the driving current supplied by the plurality of pixel is circuits and a power supply (6) which outputs to the plurality of pixel circuits a driving current reference voltage to supply the driving current.