Patent ID: 6107137
Filing Date: 2000-08-22
Classification: H01L,Y10S

Abstract:
A method of forming a capacitor, comprising:forming a series of first material layers and second material layers over a substrate, the first and second material layers alternating within the series, the first material being removed at a faster rate than the second material under particular etching conditions;forming an electrically conductive layer along the series of first and second material layers, the electrically conductive layer electrically connecting the series of first and second material layers with a node location;subjecting the first and second materials to the particular etching conditions to etch the first material at a faster rate than the second material and thereby recess the first material relative to the second material;patterning the series of alternating first and second material layers to form a first capacitor electrode comprising the first and second materials;forming a capacitor dielectric layer over the conductive layer and the recessed first material;forming a second capacitor electrode over the capacitor dielectric layer; andwherein the etching to recess the first material occurs before the etching to form the first capacitor plate.