Patent ID: 8652926

Claim:
A method of forming capacitors, comprising: providing first capacitor electrodes within support material; the support material comprising an elevationally outer material, an elevationally inner material, an elevationally intermediate material between the outer and inner materials, and a covering material over the outer material; the covering material and the intermediate material being of different composition from composition of the outer and inner materials; forming openings through the covering material to expose the outer material; dry isotropically etching the outer material from being over the first capacitor electrodes and the intermediate material, the etching of the outer material being conducted selectively relative to the first capacitor electrodes and the intermediate material; anisotropically etching openings through the intermediate material to expose the inner material using the covering material with openings therein as an etch mask, the etching of openings through the intermediate material being conducted selectively relative to the first capacitor electrodes; etching the inner material through the openings in the intermediate material, the etching of the inner material being conducted selectively relative to the first capacitor electrodes; and forming a capacitor dielectric over sidewalls of the first capacitor electrodes and forming a second capacitor electrode over the capacitor dielectric.