An organic thin film transistor (OTFT) array panel for a display device includes a gate line and a pixel electrode formed on a substrate, the gate line and pixel electrode each having a first conductive layer including a transparent conductive oxide and a second conductive layer including a metal, a data line crossing the gate line and including a source electrode, a drain electrode facing the source electrode and connected with the pixel electrode, and an organic semiconductor in contact with the source electrode and the drain electrode.