Patent ID: 8552515

Claim:
A method for forming an integrated circuit device on a substrate comprising: forming a first insulating layer on said substrate; removing a portion of said first insulating layer to produce an opening to an exposed surface of said substrate therein; forming first spacers on sidewalls of said opening; forming a first conductive layer on said exposed surface of said substrate separated from said first spacers on said sidewalls of said opening by a gap therebetween; forming a bottom electrode of a ferroelectric capacitor over said first conductive layer and in said gap laterally of said first conductive layer; forming a second insulating layer adjoining said spacers in said opening; forming second spacers on said second insulating layer in said opening; forming a ferroelectric dielectric on said bottom electrode between said second spacers; forming a top electrode on said ferroelectric dielectric; forming a bottom electrode contact opening through a portion of said second insulating layer to said bottom electrode; and forming a first electrical contact to said top electrode and a second electrical contact to said bottom electrode through said bottom electrode contact opening.