Patent ID: 6459116
Filing Date: 2002-10-01
Classification: H01L

Abstract:
A capacitor structure situated on a semiconductor substrate comprising:two gate stacks situated upon said semiconductor substrate; a storage node layer; a cell dielectric layer situated on the storage node layer; a cell plate layer situated on the cell dielectric layer, wherein each of said storage node layer, cell dielectric layer, and cell plate layer have a concave shape and are situated between said two gate stacks and at least partially above said semiconductor substrate; a concave shaped storage container cell region having an opening thereto and being defined by a concave surface of said storage node layer; and a spacer within the opening to the concave shaped storage container cell region; wherein: said spacer is in contact with and circumscribed by the storage node layer; the cell dielectric layer makes a conforming contact with the storage node layer; and the cell plate layer makes a conforming contact with the cell dielectric layer.