Patent ID: 6080648
Filing Date: 2000-06-27
Classification: H01L

Abstract:
A method of fabricating a semiconductor device, comprising the steps of:preparing a silicon substrate on which a gate insulating film is formed and a gate electrode composed of a multi-layer film of a polycrystalline silicon film and an insulating film is formed on said gate insulating film;forming side walls from a material having an etching selectivity to said insulating film on both sides of said gate electrode;forming a resist film on said silicon substrate in such a manner as to cover said gate electrode, and etching-back said resist film until said resist film remains on said silicon substrate except for said gate electrode portion to expose an upper portion of said gate electrode;selectively removing said insulating film on said gate electrode using said resist film and said side walls as a mask, and removing said resist film; andforming a refractory metal film on said silicon substrate in such a manner as to cover said gate electrode, and forming metal silicide films on said gate electrode and said silicon substrate by silicidizing, through heat-treatment, said refractory metal film with said polycrystalline silicon film of said gate electrode and with said silicon substrate.