Patent ID: 7723227

Claim:
A method of forming copper-comprising conductive lines in the fabrication of integrated circuitry, comprising: depositing damascene material over a substrate; forming line trenches into the damascene material; electrochemically depositing conductive copper-comprising material over the damascene material and to within the line trenches; removing conductive copper-comprising material and exposing the damascene material and forming individual copper-comprising conductive lines within individual of the line trenches; after exposing the damascene material, removing the damascene material selectively relative to the conductive copper-comprising material; and after removing the damascene material, depositing dielectric material laterally between adjacent of the individual copper-comprising conductive lines, the deposited dielectric material being received against sidewalls of the individual copper-comprising conductive lines in a finished integrated circuitry construction and having a void which is received laterally between immediately adjacent of the individual copper-comprising conductive lines within the deposited dielectric material in the finished integrated circuitry construction.