Patent ID: 7544563
Filing Date: 2009-06-09
Classification: H01L

Abstract:
1. A method of forming a plurality of capacitors, comprising: forming sacrificial material pillars projecting outwardly from openings in a first material over individual capacitor storage node locations within a capacitor array area over a substrate; depositing electrically insulative material different in composition from the first material over the first material laterally about sidewalls of the projecting pillars and anisotropically etching the electrically insulative material without masking it anywhere within the capacitor array effective to expose underlying first material and leave electrically insulative material received laterally about the sidewalls of the projecting pillars; forming openings within a second material to the pillars, the second material being different in composition from the electrically insulative material and from the pillars; etching the pillars from the substrate through the openings in the second material and forming individual capacitor electrodes within the openings in electrical connection with the capacitor storage node locations, the individual capacitor electrodes having the anisotropically etched electrically insulative material received laterally about outer sidewalls of the individual capacitor electrodes; and incorporating the individual capacitor electrodes having the anisotropically etched electrically insulative material received laterally about the capacitor electrode outer sidewalls into a plurality of capacitors.