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Light emitting diode with porous SiC substrate and method for fabricating

  • US 6,972,438 B2
  • Filed: 09/30/2003
  • Issued: 12/06/2005
  • Est. Priority Date: 09/30/2003
  • Status: Active Grant
First Claim
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1. A light emitter, comprising:

  • a substrate having a porous layer; and

    a semiconductor emission region formed on said substrate, said emission region capable of emitting light omnidirectionally in response to a bias, said porous layer on one or more surfaces of said substrate not covered by said emission region, said porous layer enhancing extraction of said emission region light passing through said substrate.

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