Patent ID: 7659161

Claim:
A method of forming storage nodes for a DRAM array, comprising: providing a semiconductor construction comprising a plurality of storage node contact locations; forming a stack over the storage node contact locations, the stack comprising, in at least one cross-sectional view: a first electrically insulative material over the storage node locations; a plurality of spaced electrically conductive lines over the first electrically insulative material, each of the electrically conductive lines having a pair of opposed lateral edges and a first lateral width between the opposed lateral edges, an entirety of each of the electrically conductive lines being over the first electrically insulative material in said at least one cross-sectional view; a second electrically insulative material filling spaces between the spaced electrically conductive lines; and a plurality of spaced electrically insulative lines directly over the electrically conductive lines and in a one-to-one correspondence with the electrically conductive lines, each of the spaced electrically insulative lines having opposed lateral edges and a second lateral width between the opposed lateral edges which is greater than the first lateral width; etching a plurality of openings which extend entirely through the first and second electrically insulative materials to the storage node locations, the plurality of openings being aligned with the lateral edges of the spaced electrically insulative lines, each individual opening of the plurality of openings having a third lateral width that is less than a shortest distance between the two spaced electrically conductive lines of the plurality of spaced electrically conductive lines nearest the individual opening, the individual opening being between the two spaced electrically conductive lines of the plurality of spaced electrically conductive lines nearest the individual opening; and forming capacitors having storage nodes within the openings, the storage nodes being in electrical contact with the storage node contact locations.