An display device having a thin film transistor with improved characteristics comprising a gate conductor including a gate electrode formed on an insulating substrate; a gate insulating layer formed on the gate electrode; a conductive layer comprising a plurality of layers including a source electrode and a drain electrode formed on the gate insulating layer and separated from each other across the gate electrode to define a channel region; and an organic semiconductor layer formed in the channel region, wherein the conductive layer comprises a metal layer and a transparent electrode layer.