Patent ID: 8921932
Filing Date: 2014-12-30
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate made of a compound semiconductor and having a plurality of first recesses, each of which opens at one main surface thereof and has a first side wall surface; a gate insulating film disposed on and in contact with said first side wall surface; and a gate electrode disposed on and in contact with said gate insulating film, said substrate including portions of said source region facing each other with said first recess interposed therebetween being connected to each other in a region interposed between said first recess and another first recess adjacent to said first recess when viewed in a plan view, and a portion of said source region surrounding said first recess is directly connected to a portion of said source region surrounding said another first recess adjacent to said first recess when viewed in a plan view, wherein said substance is further provided with a second recess having a second side wall surface, and said source region is exposed at said second side wall surface, the semiconductor device further comprising an ohmic electrode, which is formed on said second side wall surface and makes ohimc contact with said source region.