Patent ID: 8866151

Claim:
A semiconductor device comprising: a semiconductor layer of a first conductivity type; a first region of a second conductivity type selectively provided in a first major surface of the semiconductor layer, the first region comprising a plurality of column regions spaced from each other in a first direction along the first major surface, each of the column regions including a plurality of first stripe regions extending in the first direction, the first stripe regions of each column region being spaced from each other in a second direction along the first major surface perpendicular to the first direction; a second region of the second conductivity type selectively provided in the first major surface, the second region including a plurality of second stripe regions extending in the second direction, at least one of the second stripe regions being provided between adjacent column regions, an end, in the first direction, of each of the first stripe regions meeting the second region; a third region of the second conductivity type surrounding the first and second regions in a plane of the first major surface, both ends, in the second direction, of each of the second stripe regions meeting the third region; a first electrode provided in contact with the semiconductor layer and the first region, the first electrode being in Schottky contact with the semiconductor layer; a second electrode provided ohmic in contact with the second region; and a third electrode electrically connected to a second major surface of the semiconductor layer opposite to the first major surface.