Patent ID: 7785962

Claim:
A method of forming a plurality of capacitors, comprising: providing a substrate comprising a capacitor array area, a circuitry area other than the capacitor array area, and an intervening area between the capacitor array area and the circuitry area; an insulative material received over the capacitor array area and the circuitry area, the capacitor array area comprising a plurality of capacitor electrode openings within the insulative material received over individual capacitor storage node locations, the intervening area comprising a trench within the insulative material; forming conductive metal nitride-comprising material within the capacitor electrode openings and against a sidewall portion of the trench to less than completely fill the trench, the conductive metal nitride-comprising material within the capacitor electrode openings comprising separate conductive capacitor electrodes; annealing inner sidewalls of the conductive metal nitride-comprising material within the trench in a nitrogen-comprising atmosphere, the nitrogen-comprising atmosphere being devoid of non-solid silicon-comprising material; after the annealing, etching the insulative material within the capacitor array area with a liquid etching solution effective to expose outer sidewall portions of the capacitor electrodes; and after the etching, incorporating the capacitor electrodes into a plurality of capacitors.