Patent ID: 8125014
Filing Date: 2012-02-28
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a first insulating film including at least a first interlayer insulating film formed above said semiconductor substrate; a first plug including a conductive material which fills a first connecting hole formed in said first insulating film; a capacitor construction comprising a lower electrode, an upper electrode and a dielectric film therebetween; a second insulating film having a laminated-layer construction including a first protective film and a second protective film for preventing degradations of the characteristics of said capacitor construction, said first protective film and said second protective film being laminated with a second interlayer insulating film interposed therebetween and said second insulating film being formed to cover said capacitor construction; and a second plug including a conductive material which fills a second connecting hole, said second connecting hole being formed in said second insulating film such that said first plug is exposed at least at a portion thereof; wherein said first protective film is removed at least at the portion which corresponds to said second connecting hole and is not in contact with said second plug and said first protective film is formed to cover at least said capacitor construction, and wherein said first protective film is removed only at a portion which corresponds to said second connecting hole so as to have a greater diameter than that of said second connecting hole.