Patent ID: 6133115
Filing Date: 2000-10-17
Classification: H01L

Abstract:
A method of fabricating a semiconductor device, comprising the steps of:(a) forming first and second regions on a surface of a substrate, said second regions having a top surface higher than top surfaces of said first regions;(b) forming oxides in selected regions both in said first and second regions for isolating device formation regions from one another so that oxides formed in said second regions have a top surface higher by a height H than top surfaces of oxides formed in said first regions;(c) forming gate oxide films on a surface of said substrate between said oxides;(d) forming a polysilicon film over said substrate;(e) planarizing said polysilicon film until top surfaces of said oxides formed in said second regions appear; and(f) depositing a silicide film on said planarized polysilicon film.