Patent ID: 6376301
Filing Date: 2002-04-23
Classification: H01L

Abstract:
A method of forming a capacitor comprising the following steps:forming a first layer over a node location; forming a semiconductive masking layer over the first layer; etching an opening through both the semiconductive masking layer and the first layer to the node location using the semiconductive masking layer as an etch mask during said etching of said first layer; forming an upwardly open capacitor storage node layer within the opening and in electrical connection with the masking layer, the storage node layer having a layer thickness over the node location approximately the same as a layer thickness over the masking layer; patterning at least the masking layer and forming a capacitor storage node comprising the semiconductive masking layer and the storage node layer; forming a capacitor dielectric layer operatively proximate the capacitor storage node; and forming an outer layer capacitor plate layer operatively proximate the capacitor dielectric layer.