Patent ID: 6329243
Filing Date: 2001-12-11
Classification: H01L,Y10S

Abstract:
A method for fabricating a crown capacitor, comprising the steps of:providing a substrate having a MOS structure, wherein the MOS structure includes a drain region;forming an inter-layer dielectric layer on the substrate;forming a contact hole in the inter-layer dielectric layer to expose the drain region;forming a first conductive layer on the inter-layer dielectric layer to fill the contact hole;forming a deep UV photoresist layer on the first conductive layer;patterning the deep UV photoresist layer, wherein the remaining deep UV photoresist layer corresponds to the contact hole;performing a silylation process to form a second conductive layer on top and sidewalls of the remaining deep UV photoresist layer; andremoving a portion of the first conductive layer and a portion of the second conductive layer using the inter-layer dielectric layer as a stop layer to form a bottom electrode.