Patent ID: 6777305
Filing Date: 2004-08-17
Classification: H01L

Abstract:
A method for fabricating a capacitor, comprising:forming a first insulating film on a semiconductor substrate; forming a contact plug through the first insulating film; sequentially forming an etch barrier film and a second insulating film upon the first insulating film; sequentially etching the second insulating film and the etch barrier film to form an opening part so as to expose the contact plug; forming a conductive film on the second insulating film and on the opening part; selectively etching the conductive film, wherein the conductive film is over-etched relative to the second insulating film, so as to form a storage node within the opening part; forming prominences on a surface of the storage node; and sequentially forming a dielectric film and a plate node upon the storage node and the second insulating film.