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Semiconductor device and fabrication method of the same

  • US 20060043480A1
  • Filed: 11/19/2004
  • Published: 03/02/2006
  • Est. Priority Date: 09/01/2004
  • Status: Abandoned Application
First Claim
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1. A semiconductor device comprising:

  • a semiconductor layer including a terminate end part and a cell formation part as surrounded by this end part; and

    a plurality of guard rings each being formed at the end part to surround said cell formation part and being arranged to become shallower and smaller in width as getting near to a guard ring placed outside.

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