Patent ID: 9059328
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. A nitride semiconductor element comprising: a nitride semiconductor substrate of a first conductive type, the nitride semiconductor substrate having a first surface and a second surface on a back side of the first surface; a nitride semiconductor layer of the first conductive type provided on the first surface side of the nitride semiconductor substrate of the first conductive type; a nitride semiconductor layer of a second conductive type, provided on the nitride semiconductor layer of the first conductive type, having a first portion and a second portion provided so as to surround the first portion, and set as having a conductive type opposite to the first conductive type; a first electrode having a portion connected with the first portion in a state of a Schottky junction and a portion connected with the second portion in a state of an ohmic junction; and a second electrode provided on the second surface side of the nitride semiconductor substrate of the first conductive type, and a film thickness of the first portion being thinner than a film thickness of the second portion so as to be depleted.