Patent ID: 8884362

Claim:
A semiconductor device comprising: a first conductive type semiconductor layer; a plurality of second conductive type first semiconductor regions provided on the semiconductor layer; a first conductive type second semiconductor region provided on each of the plurality of first semiconductor regions; a first electrode being positioned between the plurality of first semiconductor regions, the first electrode contacting with the semiconductor layer, each of the plurality of first semiconductor regions, and the second semiconductor region via a first insulating film; a second electrode provided below the first electrode, and contacting with the semiconductor layer via a second insulating film; an insulating layer interposed between the first electrode and the second electrode; a third electrode electrically connected to the semiconductor layer; and a fourth electrode connected to the second semiconductor region, the first electrode has: a first portion facing an upper end of the second electrode; and a pair of second portions connected to the first portion, the pair of second portions being extended from the semiconductor layer toward the second semiconductor region, and the pair of second portions facing each other, and each of the pair of second portions is provided along the first insulating film.