Patent ID: 7468539
Filing Date: 2008-12-23
Classification: H01L

Abstract:
1. A field-effect transistor comprising: a substrate of a first conductivity type; a channel diffusion region of a second conductivity type provided in said substrate; a first source contact region of the first conductivity type provided in said channel diffusion region; a second source contact region of the second conductivity type provided in said first source contact region; an electrode wiring connected to said first source contact region and said second source contact region; a surface insulating film provided on said channel diffusion region; and a single linear gate electrode provided on said surface insulating film and having a plurality of branching elements arranged parallel to each other, spacing between said branching elements being less than a thickness of said surface insulating film, each of said branching elements having an elongated shape extending vertically from said surface insulating film, said branching elements being electrically connected to each other.