Patent ID: 7497958
Filing Date: 2009-03-03
Classification: B82Y,G03F,H01L

Abstract:
1. A method of forming capacitors, comprising: providing an assembly which includes a semiconductor base supporting a plurality of conductive nodes, and which includes an electrically insulative material over the nodes; providing a masking layer over the assembly; providing a reticle which has patterning surface; pressing the patterning surface into the masking layer to form a pattern within the masking layer, said pattern substantially corresponding to an inverse image of the patterning surface, the pattern having a plurality of indentations within the masking layer; extending the indentations through the electrically insulative material to the nodes to form openings through the electrically insulative material; forming capacitor first electrodes within the openings to narrow the openings; forming capacitor dielectric within the narrowed openings to further narrow the openings; forming capacitor second electrodes within the further narrowed openings; wherein the patterning surface of the reticle comprises pillars; and wherein at least some of the pillars comprise quartz projections that are partially enveloped in silicon dioxide spacers deposited by one or both of CVD and ALD.