Patent ID: 7323728
Filing Date: 2008-01-29
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate; an n a first n-type semiconductor layer formed on the n a p-type semiconductor layer formed on the first n-type semiconductor layer and having a material having a first band gap; a second n-type semiconductor layer formed on the p-type semiconductor layer, the second n-type semiconductor layer being smaller than the p-type semiconductor layer in area and having a material having a second band gap larger than the first band gap; an implant portion formed to penetrate, from a region of the p-type semiconductor layer where the second n-type semiconductor layer is not formed, the first n-type semiconductor layer and the n an electrode formed on a region of the p-type semiconductor layer where the second n-type semiconductor layer is not formed, so as to bridge over at least the implant portion and to be in contact with both of the p-type semiconductor layer of the active region and the p-type semiconductor layer of the non-active region.