Patent ID: 8018028
Filing Date: 2011-09-13
Classification: H01L,Y10S

Abstract:
1. A semiconductor device comprising: a semiconductor substrate that includes: a cell region that is disposed on the semiconductor substrate, the cell region having a semiconductor chip; an outer peripheral region that is disposed on the semiconductor substrate at an outer periphery of the cell region; a field plate that is disposed to the semiconductor substrate on a cell region side of the outer peripheral region; an outermost peripheral ring that is disposed at an outermost edge portion of the outer peripheral region, the outermost peripheral ring being electrically connected with the semiconductor substrate; an outer peripheral region layer that is disposed on the repetition structure; an insulator film that is disposed on the outer peripheral region layer; and a Zener diode that is disposed on the insulator film for electrically connecting the field plate with the outermost peripheral ring, the Zener diode having a first conductivity type region and a second conductivity type region that are alternately arranged in a direction from the cell region to the outer peripheral region.