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Semiconductor device with trenched substrate and method

  • US 6,323,090 B1
  • Filed: 06/09/1999
  • Issued: 11/27/2001
  • Est. Priority Date: 06/09/1999
  • Status: Expired due to Term
First Claim
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1. A method for modifying a performance characteristic of a semiconductor device while producing the semiconductor device comprising:

  • creating a recess in an upper surface of a base layer, the base layer comprising a chosen one of a p+ or n+ substrate;

    growing an epitaxial (epi) layer on the upper surface, the epi layer having an outer surface; and

    forming, on the epi layer, a semiconductor device element associated with the recess.

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