Patent ID: 7224014
Filing Date: 2007-05-29
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first insulating film having a cavity; a second insulating film formed on the first insulating film and having an opening exposing the cavity; a lower electrode of a concave shape in cross section formed on the bottom and sides of the cavity; a capacitive insulating film formed on the lower electrode; and an upper electrode formed on the capacitive insulating film, wherein the diameter of the cavity of the first insulating film is larger than that of the opening of the second insulating film, and the end of the second insulating film located on the sides of the opening is formed in an eaves-like part to project like eaves inwardly beyond the sides of the first insulating film, and a height of the top end of the side part of the lower electrode is lower than that of the top end of the second insulating film.