Patent ID: 7812385

Claim:
A semiconductor device comprising: a ferroelectric capacitor that is provided above a base substrate and includes a first electrode, a ferroelectric film provided on the first electrode and a second electrode provided on the ferroelectric film; a stopper film that covers a top surface of the second electrode of the ferroelectric capacitor; a hydrogen barrier film that covers a top surface and a side surface of the stopper film and a side surface of the ferroelectric capacitor; an interlayer dielectric film that covers the hydrogen barrier film and the base substrate; a contact hole that penetrates the interlayer dielectric film, the hydrogen barrier film and the stopper film and exposes the second electrode, an inner diameter of the contact hole decreasing between an upper surface of the interlayer dielectric film and the hydrogen barrier film; a barrier metal that covers the second electrode exposed in the contact hole and an inner wall surface of the contact hole and is formed from a conductive material having hydrogen barrier property; and a plug conductive section that is embedded in the contact hole and conductively connects to the barrier metal, wherein the stopper film is formed from a dielectric material having a smaller etching rate than an etching rate of the interlayer dielectric film.