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High-voltage edge termination for planar structures

  • US 6,376,890 B1
  • Filed: 12/08/1999
  • Issued: 04/23/2002
  • Est. Priority Date: 04/08/1998
  • Status: Expired due to Term
First Claim
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1. A high-voltage edge termination structure for planar structures, comprising:

  • a semiconductor body having an edge area and formed of a first conductivity type;

    an insulator layer disposed on said semiconductor body;

    at least one field plate isolated from said semiconductor body by said insulator layer; and

    floating regions of a second conductivity type disposed in said edge area of said semiconductor body, each one of said floating regions disposed on one of a plurality of substantially mutually parallel levels and spaced at a distance from one another causing zones between said floating regions to be completely depleted to form space-charge zones at an applied voltage which is low in comparison with a breakdown voltage of said floating regions.

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