Patent ID: 8143698
Filing Date: 2012-03-27
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a first electrode provided on a semiconductor substrate; a capacitive film, provided on said first electrode so as to be in contact with the first electrode; a second electrode, provided on said capacitive film so as to be in contact with the capacitive film, said second electrode, said first electrode and said capacitive film constituting a capacitor element; a first opening portion, provided in said first electrode and extending through the first electrode; and a second opening portion, provided in said second electrode and extending through the second electrode, wherein insulating films are embedded within said first opening portion and said second opening portion, wherein a width of said first opening portion is equal to or shorter than a thickness of said first electrode and a width of said second opening portion is equal to or shorter than a thickness of said second electrode, and wherein an orthogonal projection of said first opening portion to a plane that is parallel to a substrate surface of said semiconductor substrate is identical with an orthogonal projection of said second opening portion to said plane.