Patent ID: 9099564
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A semiconductor element, comprising: a semi-insulating substrate; a first first-conductivity-type layer having a first conductivity type and provided selectively on a first surface of the semi-insulating substrate; a first semiconductor layer provided on the semi-insulating substrate and the first first-conductivity-type layer, the first semiconductor layer containing Al a second semiconductor layer provided on the first semiconductor layer and containing Al a first major electrode connected to the second semiconductor layer; a second major electrode connected to the second semiconductor layer; and a control electrode provided on the second semiconductor layer between the first major electrode and the second major electrode, the first first-conductivity-type layer being disposed at a position under the control electrode in a first direction orthogonal to the first surface, the first first-conductivity-type layer having a first vertical side edge that is at a position between the control electrode and the second major electrode when viewed from the first direction.