Patent ID: 7166526

Claim:
A method for forming a silicide film in a semiconductor device, comprising the steps of: forming a silicide suppressing film on a silicon substrate; dry etching the silicide suppressing film by supplying CF 4 gas at a flow rate of from about 40 sccm to about 100 sccm at pressure of from about 30 Pa to about 40 Pa while applying a power of from about 300 W to about 600 W, and supplying O, gas at a flow rate of from about 100 sccm to about 300 sccm while applying a power of from about 50 W to about 100 W to form a silicide suppressing film pattern; forming a metal film on a surface of the silicon substrate inclusive of the silicide suppressing film pattern; heating the silicon substrate to form a silicide film on a portion of the silicon substrate exposed by the silicide suppressing film pattern; and removing a remaining portion of the metal film.