Patent ID: 6798007
Filing Date: 2004-09-28
Classification: H01L

Abstract:
A method of fabricating a semiconductor device, comprising the steps of:defining first and second regions on a substrate; forming a tunneling insulation film on said first region of said substrate; forming a device isolation film on said second region of said substrate; forming a first electrode pattern and a second electrode pattern on said substrate substantially simultaneously such that said first electrode pattern covers said tunneling insolation film and such that said second electrode pattern covers said device isolation film; forming a first insulation pattern by forming a first insulation film so as to cover said first electrode pattern and said second electrode pattern and by patterning said first insulation pattern such that said second electrode pattern is exposed; forming, after said step of forming said first insulation pattern, a second insulation pattern on said second electrode pattern by oxidizing a surface of said exposed second electrode pattern; depositing, after said step of forming said second insulation pattern, a conductive film on said substrate such that said conductive film covers said first electrode pattern carrying thereon said first insulation pattern and further said second electrode pattern carrying said second insulation pattern; and patterning said conductive film to form third and fourth electrodes respectively on said first insulation pattern and said second insulation pattern simultaneously.