Patent ID: 7723197

Claim:
A method of manufacturing a semiconductor device, the method comprising: forming a crystalline semiconductor film above a substrate, the crystalline semiconductor film including a first portion, a second portion, and a third portion, the first portion being positioned between the second portion and the third portion; forming a gate electrode above the first portion; applying an impurity to the second portion and the third portion using the gate electrode as a mask such that the second portion and the third portion are confined to have an impurity doped region and an impurity non-doped region, respectively, the impurity non-doped region being positioned between the impurity doped region and the substrate; heating the impurity at a temperature within a range of 350° C. to 550° C. to induce a solid phase epitaxy using the impurity non-doped region as a seed such that the impurity doped region recovers a crystalline state, the second portion forming a first source region and the third portion forming a first drain region; forming a nickel film on the first source region and the first drain region after the heating of the impurity; forming a titanium nitride film on the nickel film; and conducting an annealing at a temperature within a range of 350° C. to 550° C. to turn a surface of the first source region and the first drain region into a silicide.