Patent ID: 6955959
Filing Date: 2005-10-18
Classification: C23C,H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising: forming a MISFET on a principal surface of a semiconductor substrate; forming a first insulating film on said MISFET; forming a plug in said first insulating film connecting a source or drain region of said MISFET; forming a bit line over said first insulating film; forming a second insulating film over said bit line and first insulating film; forming a groove in said second insulating film; forming a storage electrode in said groove; forming a niobium oxide film on said storage electrode, and then annealing said niobium oxide film for crystallizing said niobium oxide film; forming a tantalum oxide film on said crystallized niobium film, and then annealing said tantalum oxide film for crystallizing said tantalum oxide film; and forming a plate electrode on said tantalum oxide film.