Patent ID: 6172411
Filing Date: 2001-01-09
Classification: H01L,Y10S

Abstract:
A contact structure, comprising:a substrate having devices formed therein and an electrode formed thereon, wherein said electrode has a top and sidewalls;a silicon oxy-nitride cap formed on said top of said electrode, wherein said silicon oxy-nitride cap has sidewalls;silicon oxy-nitride spacers formed on said sidewalls of said electrode and said sidewalls of said silicon oxy-nitride cap;a layer of silicon nitride formed on said substrate thereby covering said silicon oxy-nitride cap and said silicon oxy-nitride spacers, and in contact with said silicon oxy-nitride cap and at least one of said silicon oxy-nitride spacers;a layer of dielectric on said layer of silicon nitride; anda contact hole formed in said layer of dielectric and said layer of silicon nitride.