Patent ID: 7465636
Filing Date: 2008-12-16
Classification: H01L

Abstract:
1. A method comprising: oxidizing a portion of a substrate underlying an inner region of a semiconductor body disposed on the substrate, the inner region extending between opposing end regions of the semiconductor body; removing the oxidized portion of the underlying substrate to form an undercut separating the inner region of the semiconductor body from the substrate; oxidizing the inner region of the semiconductor body to form an oxide layer, wherein an interior core of the inner region remains unoxidized; removing the oxide layer from the inner region of the semiconductor body, the remaining unoxidized core extending between the opposing end regions; forming a drain region in a first of the opposing end regions of the semiconductor body and forming a source region in a second of the opposing end regions of the semiconductor body, wherein the unoxidized interior core provides a channel region between the source and drain regions; depositing a layer of a gate insulating material over the interior core; and depositing a gate electrode material over the gate insulating layer.