Patent ID: 8310008

Claim:
An electronic device comprising: a first source/drain region; a second source/drain region spaced apart from the first source/drain region; a channel region disposed between the first and second source drain regions; and a gate electrode having a first edge portion, a second edge portion, and a central portion disposed between and abutting the first and second edge portions, wherein: the central portion has a first conductivity type, and the first and second edge portions have a second conductivity type opposite the first conductivity type; the central portion is disposed over the channel region, wherein the central portion is narrower at a first elevation closer to the channel region than at a second elevation further from the channel region; the first edge portion at least partly overlaps the first source/drain region, wherein the first edge portion is wider at the first elevation than at the second elevation; and the second edge portion at least partly overlaps the second source/drain region.