Patent ID: 9142687
Filing Date: 2015-09-22
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first semiconductor region of a first conductivity type; a first electrode forming a Schottky junction with the first semiconductor region; a second semiconductor region of a second conductivity type provided between the first semiconductor region and the first electrode; a third semiconductor region of the second conductivity type provided between the first semiconductor region and the first electrode, the third semiconductor region forming an ohmic junction with the first electrode; a fourth semiconductor region of the first conductivity type provided between the first semiconductor region and the third semiconductor region, the fourth semiconductor region having a higher impurity concentration than the first semiconductor region; a fifth semiconductor region of the second conductivity type provided between the third semiconductor region and the first electrode, the fifth semiconductor region having a higher impurity concentration than the third semiconductor region, wherein the fifth semiconductor region is surround by the third semiconductor region; a second electrode provided on opposite side of the first semiconductor region from the first electrode.