Patent ID: 6188098
Filing Date: 2001-02-13
Classification: H01L

Abstract:
A semiconductor device comprising:a substrate, said substrate forming a substrate plane;a transistor portion having a gate oxide film on said substrate, a gate electrode on said gate oxide film, and an impurity diffusion region;a capacitor portion having a top, a lower electrode and a capacitor insulating film, said lower electrode having an electrode upper surface and an electrode side surface, said capacitor insulating film having an insulator side surface, and said capacitor insulating film being located on said electrode upper surface; said capacitor insulating film comprising a material selected from the group consisting of a ferroelectric substance material or a high dielectric constant material, said top of said capacitor portion having a contact portion for electrically contacting said impurity diffusion region to said capacitor portion, said capacitor portion and said transistor portion not overlapping each other on said substrate plane;a first nonconductive hydrogen barrier film, said first nonconductive hydrogen barrier film being located under said lower electrode;a second nonconductive hydrogen barrier film, said second nonconductive hydrogen barrier film covering said top of said capacitor portion except for said contact portion, and further covering said insulator side surface and said electrode side surface; anda conductive hydrogen barrier film, said conductive hydrogen barrier film located on said top of said capacitor portion and covering said contact portion;whereby no hydrogen barrier film is located over said transistor portion.