Patent ID: 7341916

Claim:
A method for forming a fin for use in an electronic device, the method comprising: providing a substrate having a base, an insulative layer, and a semiconducting layer; forming a pedestal region including the semiconducting layer; surrounding the pedestal region with a first dielectric layer, an uppermost surface of the first dielectric layer being substantially coplanar with an uppermost surface of the pedestal region, forming a second dielectric material over a first uppermost portion of the pedestal region leaving an exposed uppermost portion of the pedestal region not covered by the second dielectric material; forming a third dielectric material conformally over the second dielectric material and the exposed portion of the pedestal region; etching regions of the third dielectric material that are substantially parallel to a face of the substrate thereby leaving a first dielectric spacer, the first dielectric spacer overlying a protected portion of the pedestal region; substantially removing the second dielectric material; and etching substantially all portions of the pedestal region that are not laterally in close proximity to or underlying the protected portion, thereby forming a fin.