Patent ID: 7115464

Claim:
A method of fabricating a semiconductor device, the method comprising: providing a substrate having formed thereon at least one first transistor and at least one second transistor, each of said first and second transistors being comprised of a gate electrode and a plurality of source/drain regions; depositing a first metal layer on the at least one first and second transistors; forming a mask layer above the first metal layer wherein the first metal layer above the at least one second transistor is exposed; removing the first metal layer from above the at least one second transistor; performing at least one heat treating process on the first metal layer to form a first metal silicide compound on the gate electrode and the source/drain regions of the at least one first transistor; depositing a second metal layer over the at least one first and second transistors; and performing at least one heat treating process on the second metal layer to form a second metal silicide compound on at least one of the gate electrode and the source/drain regions of the at least one second transistor.