Patent ID: 6174776
Filing Date: 2001-01-16
Classification: H01L

Abstract:
A method for forming a gate contact in metal oxide semiconductor, comprising:providing a semiconductor substrate and an oxide layer upon said semiconductor substrate;forming a polysilicon layer upon said oxide layer;defining and etching said polysilicon layer to form a gate;implanting upon top surface of said oxide layer so that source/drain region is formed below and abutted said oxide layer;annealing said source/drain region;forming a spacer abutting sidewall of said gate;forming and overlapping a salicide upon top surface of said gate and over said semiconductor substrate;defining a gate contact area upon top surface of said semiconductor substrate by using a mask which has a pattern covering approximately over half of the gate, half of the spacer and over the drain region, wherein the dimension of overlap distance for over half of the gate, half of the spacer and over the drain region being about 0.16 .mu.m, wherein said mask is a photoresist;removing the half of said spacer not covered by the mask; andimplanting to form gate contact in the substrate by using the salicide as implanting mask.