Patent ID: 7172917

Claim:
A method for fabricating a variable capacitive device, comprising: providing a first silicon-bearing electrode on a substrate; providing a sacrificial layer on the first silicon-bearing electrode, the sacrificial layer being vertically-inclined with respect to the substrate; providing a second silicon-bearing electrode on the sacrificial layer; removing the sacrificial layer from between the first silicon-bearing electrode and the second silicon-bearing electrode; depositing epipoly to form a first silicon-bearing layer; etching the first silicon-bearing layer to define the first silicon-bearing electrode; depositing epipoly to form a second silicon-bearing layer on the sacrificial layer; and etching the second silicon-bearing layer to define the second silicon-bearing electrode; before the etching of the second silicon-bearing layer, planarizing the second silicon-bearing layer down to a level of the first silicon-bearing electrode, wherein at least one of the first and second silicon-bearing electrodes is a movable electrode; wherein the first silicon-bearing electrode is electrically insulated from the second silicon-bearing electrode.