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SEMICONDUCTOR LIGHT EMITTING DEVICE

  • US 20100264447A1
  • Filed: 06/30/2010
  • Published: 10/21/2010
  • Est. Priority Date: 07/24/2001
  • Status: Active Grant
First Claim
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1. A semiconductor light emitting device comprising:

  • a substrate comprising a plurality of protrusions that are disposed on a surface of the substrate in a two-dimensionally repeated pattern;

    a plurality of semiconductor layers disposed on the surface of the substrate and comprising a material different from the substrate; and

    an ohmic electrode disposed on a top layer of the semiconductor layers and comprising a plurality of openings,wherein at least some of the openings overlay the protrusions so that at least one protrusion is located at a corresponding opening in plan view of the semiconductor light emitting device so that at least part of a lateral edge portion of the one protrusion is located in the corresponding opening in the plan view, andthe protrusions are configured to scatter or diffract light generated in the semiconductor layers so as to emit light through the opening of the ohmic electrode.

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