Patent ID: 6600185
Filing Date: 2003-07-29
Classification: H01L

Abstract:
A capacitor having a top electrode, a bottom electrode, and a ferroelectric body disposed between the top electrode and the bottom electrode, comprising:a first dielectric lining including a silicon nitride film, disposed below the top electrode, above the bottom electrode, and in contact with sides of the ferroelectric body, protecting the sides of the ferroelectric body, the first dielectric lining having straight exterior sides that are flush with exterior edges of the bottom electrode; and an interlayer dielectric film covering the top electrode and the first dielectric lining, the interlayer dielectric film being silicon oxide, the first dielectric lining including a dielectric layer electrically isolating the bottom electrode from the top electrode, and a stopper layer providing a stopping surface for chemical-mechanical polishing during fabrication of the capacitor, a top surface of the stopper layer being flush with a top surface of the ferroelectric body.