Patent ID: 7772640

Claim:
A semiconductor device comprising: a fin-type semiconductor layer formed on a semiconductor substrate to have a {110} crystal plane as a side face of the fin-type semiconductor layer; a source region formed in the fin-type semiconductor layer; a drain region formed in the fin-type semiconductor layer; a channel region provided in the fin-type semiconductor layer between the source region and the drain region; a gate insulation film provided on the side face of the fin-type semiconductor layer in the channel region; and a gate electrode provided on the side face of the fin-type semiconductor layer via the gate insulation film, wherein the side face of the fin-type semiconductor layer in the source region and the drain region is parallel to the side face of the fin-type semiconductor layer in the channel region, the gate electrode is disconnected from the drain and the source regions, a width of a peripheral part of the fin-type semiconductor layer not covered by the gate electrode at a gap between the gate electrode and the source or the drain region is wider than a width of a center part of the fin-type semiconductor layer covered by the gate electrode in a direction of a crystal orientation <110> which is perpendicular to the {110} crystal plane, and a height of the peripheral part of the fin-type semiconductor layer is higher than a height of the central part of the fin-type semiconductor layer.