Patent ID: 6163050
Filing Date: 2000-12-19
Classification: H01L

Abstract:
A semiconductor device comprising:a patterned first polysilicon layer,a first CVD silicon oxide film, containing Cl, formed on said first polysilicon layer, Cl of said first CVD silicon oxide film having concentration of more than 1.times.10.sup.18 atoms/cm.sup.3 and less than 2.times.10.sup.20 atoms/cm.sup.3 ;an SiN film formed on said first CVD silicon oxide film;a first SiOxNy film provided on an interface between said first CVD silicon oxide film and said SiN film and formed of said first CVD silicon oxide film nitrided with NH.sub.3 ;a second CVD silicon oxide film, containing Cl, formed on said SiN film, Cl of said second CVD silicon oxide film having concentration of more than 1.times.10.sup.18 atoms/cm.sup.3 and less than 2.times.10.sup.20 atoms/cm.sup.3 ;a second polysilicon layer formed on said second CVD silicon oxide film; anda second SiOxNy film provided on an interface between said second CVD silicon oxide film and said second polysilicon layer and formed of said second CVD silicon oxide film nitrided with NH.sub.3.