Patent ID: 9634128
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A semiconductor device, comprising: a first electrode; a second electrode; a first semiconductor region of a first conductivity type provided between the first electrode and the second electrode, the first semiconductor region being in contact with the first electrode; a second semiconductor region of a second conductivity type provided between the first semiconductor region and the second electrode, the second semiconductor region being in contact with the second electrode; a first insulating region extending in a first direction from the second electrode toward the first electrode, the first insulating region being in contact with the second electrode; a third semiconductor region of the first conductivity type provided between the second semiconductor region and the first insulating region, the third semiconductor region being in contact with the first semiconductor region and the second semiconductor region, and a fourth semiconductor region of the second conductivity type, the fourth semiconductor region being in contact with the second electrode, the first insulating region, the second semiconductor region and the third semiconductor region.