Patent ID: 7019347

Claim:
Dynamic random access memory circuitry comprising: a plurality of spaced conductive structures comprising conductive material which is received within and projecting outwardly from a first insulative material; a plurality of isolated insulative collars received about the conductive material of the spaced conductive structures and over the first insulative material, the insulative collars comprising a material different from the first insulative material; a third insulative material received over the spaced conductive structures and insulative collars, the third insulative material being different from the collar material; and a plurality of conductive contacts formed to the conductive material of the spaced conductive structures through the third insulative material, wherein at least some of the isolated insulative collars individually collar conductive material of multiple spaced conductive structures with material of said at least some of the isolated insulative collars being received within spaces between said multiple spaced conductive structures.