Patent ID: 9530874
Filing Date: 2016-12-27
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a first semiconductor region of a first conductivity type; a second semiconductor region of a second conductivity type provided over the first semiconductor region; a third semiconductor region of the first conductivity type selectively provided on the second semiconductor region; a fourth semiconductor region of the second conductivity type selectively provided on the third semiconductor region; a fifth semiconductor region of the first conductivity type selectively provided on the third semiconductor region; a gate electrode disposed adjacent to the third semiconductor region with a first insulating film therebetween; a first electrode extending inwardly of the second semiconductor region with a second insulating film therebetween, a portion of the second semiconductor region positioned between the gate electrode and the first electrode; a second electrode that extends into the second semiconductor region in contact with the fifth semiconductor region and the fourth semiconductor region; and a sixth semiconductor region of the first conductivity type extending inwardly of the second semiconductor region in at least a part of an area where the third semiconductor region is not provided, and not in contact with the second electrode.