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LED structure with enhanced mirror reflectivity

  • US 8,686,429 B2
  • Filed: 06/24/2011
  • Issued: 04/01/2014
  • Est. Priority Date: 06/24/2011
  • Status: Active Grant
First Claim
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1. An LED chip, comprising:

  • one or more LEDs, with each of said LEDs comprising;

    an active region;

    a first contact under said active region, said contact comprising a highly reflective mirror;

    a barrier layer adjacent said mirror, said barrier layer smaller than said mirror such that it does not extend beyond the periphery of said mirror; and

    an insulator adjacent said barrier layer, said active region, and at least one portion of said mirror not contacted by said barrier layer, said insulator comprising a first layer for preventing migration and a second layer having a low refractive index.

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