Patent ID: 9691759
Date: 2017-06-27
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a semiconductor substrate of a first conductivity type, having a first principal surface and a second principal surface; a first silicon carbide semiconductor layer of the first conductivity type, disposed on the first principal surface of the semiconductor substrate; unit cells; a source including a source pad and a source wiring extending from the source pad; and a gate including a gate pad and a gate wiring extending from the gate pad, wherein: each of the unit cells includes: the unit cells include first unit cells disposed in a first element region and second unit cells disposed in a second element region, and in a plan view, the first element region and the second element region are adjacent to each other with the gate wiring interposed between the first and second element regions, at least some of the first unit cells are disposed below one of the source pad and the source wiring, at least some of the second unit cells are disposed below another of the source pad and the source wiring, a first electrode including the gate electrode of each of the first unit cells is disposed in the first element region and electrically connected to the gate, a second electrode including the gate electrode of each of the second unit cells is disposed in the second element region and not electrically connected to the gate, and the first electrode and the second electrode are separated from each other below the gate wiring.