Patent ID: 9722027
Date: 2017-08-01
CPC Classifications: H01L

Claim:
1. A silicon carbide semiconductor device, comprising: a silicon carbide substrate having a first main surface and a second main surface opposite to said first main surface; and a gate electrode provided on a side of said first main surface of said silicon carbide substrate, wherein said silicon carbide substrate includes said silicon carbide substrate further includes a first connection region provided to include a first intersection and a second intersection, said first intersection being an intersection of a straight line along said first straight-line portion and a straight line along said second straight-line portion, said second intersection being an intersection of a straight line along said third straight-line portion and a straight line along said fourth straight-line portion, said first connection region having said second conductivity type, and said gate electrode is provided to overlap said first body region sandwiched between said first source region and said first drift region, said second body region sandwiched between said second source region and said first drift region, and said first connection region, when viewed in a plan view, said first body region further has a fifth straight-line portion which is located adjacent to said first straight-line portion, on a side opposite to said second straight-line portion, and constitutes an outer periphery of said first body region, when viewed in a plan view, said second body region further has a sixth straight-line portion which is located adjacent to said third straight-line portion, on a side opposite to said fourth straight-line portion, and constitutes an outer periphery of said second body region, when viewed in a plan view, said silicon carbide substrate includes a second connection region provided to include a third intersection and a fourth intersection, said third intersection being an intersection of the straight line along said first straight-line portion and a straight line along said fifth straight-line portion, said fourth intersection being an intersection of the straight line along said third straight-line portion and a straight line along said sixth straight-line portion, said second connection region having said second conductivity type, and a relation B>0.5×A is satisfied, where A represents a distance from the center of said first connection region to the center of said second connection region, and B represents a minimum distance between said first connection region and said second connection region, when viewed in a plan view.