Patent ID: 6949431
Filing Date: 2005-09-27
Classification: H01L

Abstract:
1. A method for fabricating a cylinder type capacitor, comprising the steps of: sequentially forming an etch barrier layer and an inter-layer insulating layer on a substrate provided with storage node contacts; etching the inter-layer insulating layer to form a plurality of holes exposing the storage node contacts; forming a metal layer on the holes and the inter-layer insulating layer; forming a photosensitive layer on the metal layer; performing a blanket photo-exposure process to make the photosensitive layer remain inside of the holes; performing a cleaning process to remove portions of the photosensitive layer remaining in regions except for the holes; etching back the metal layer with use of the photosensitive layer remaining inside of the holes as an etch barrier to thereby form a plurality of cylinder type bottom electrodes inside of the holes; removing the photosensitive layer; performing a wet deep-out process to remove the inter-layer insulating layer; and sequentially forming a dielectric layer and an upper electrode on each of the cylinder type bottom electrodes.