Patent ID: 7294924

Claim:
A flat panel display device, comprising: a substrate; a semiconductor layer located on the substrate; a gate electrode located on the semiconductor layer; an interlayer located on the gate electrode and the semiconductor layer and having a source/drain contact hole that exposes an end part of the semiconductor layer; and source/drain electrodes including at least a heat-resistant metal layer pattern, an Al-based metal layer pattern on the heat-resistant metal layer pattern, and a capping metal layer pattern on the Al-based metal layer pattern, deposited on the substrate, wherein the heat-resistant metal layer pattern, the Al-based metal layer pattern and the capping metal layer pattern are located on the exposed semiconductor layer, the heat-resistant metal layer pattern being arranged directly on the exposed semiconductor layer and comprising at least one metal layer selected from a group of a Cr layer, a Cr alloy layer, a Mo layer, and a Mo alloy layer, and wherein the heat-resistant metal layer pattern and the capping metal layer pattern are formed of different material.