Patent ID: 6107175
Filing Date: 2000-08-22
Classification: H01L

Abstract:
A method of fabricating a contact, wherein a substrate having a plurality of gates and a plurality of lightly doped source/drain regions is provided, comprising:forming a dielectric layer over the substrate;after forming the dielectric layer, patterning and etching the dielectric layer to form a self-align contact window to expose a first lightly doped source/drain region of said lightly doped source/drain regions, and to form a first spacer on a side wall of a first gate of said gates simultaneously, wherein the first spacer is formed from the dielectric layer;performing an ion implantation by using the first spacer as a mask, so that a first heavily doped source/drain region is formed in the first lightly doped source/drain region;forming a doped poly-silicon layer over the substrate, and forming a metal silicide layer on the doped poly-silicon layer; andpatterning the doped poly-silicon and the metal silicide layer to form a self-align contact.