Patent ID: 8125050
Filing Date: 2012-02-28
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a wiring layer including a surface layer portion; a first wiring embedded in the surface layer portion; an insulating layer stacked on the wiring layer; a first trench extending into the insulating layer from a surface thereof; a film-shaped lower electrode formed along an inner surface of the first trench; a capacitor film formed along a surface of the lower electrode; an upper electrode filling the first trench and opposed to the lower electrode with the capacitor film sandwiched therebetween; a second trench extending into the insulating layer from the surface thereof; a metal film, made of the same material as the lower electrode, formed along an inner surface of the second trench; a second wiring filling the second trench; a first barrier seed film sandwiched between the upper electrode and the capacitor film; and a second barrier seed film, made of the same material as the first barrier seed film, sandwiched between the second wiring and the metal film, the second barrier seed film being in direct contact with the second wiring and the metal film.