Patent ID: 7713798

Claim:
A thin film transistor substrate for a display device comprising: a gate line; a data line crossing the gate line and including: a nickel-silicide layer formed on an insulating layer including silicon, and a metal layer formed on the nickel-silicide layer; and a thin film transistor including: a gate electrode connected to the gate line; a source electrode that is connected to the data line and includes the nickel-silicide layer and the metal layer formed on the nickel-silicide layer; and a drain electrode including the nickel-silicide layer and the metal layer formed on the nickel-silicide layer, wherein a thickness of the nickel-silicide layer is in a range of about 10 Å to about 500 Å, and the metal layer comprises at least one selected from the group consisting of chromium (Cr), molybdenum (Mo), molybdenum (Mo—W), tantalum (Ta) and titanium (Ti).