SEMICONDUCTOR LIGHT EMITTING DEVICE

  • US 20090159917A1
  • Filed: 12/19/2008
  • Published: 06/25/2009
  • Est. Priority Date: 12/20/2007
  • Status: Active Grant
First Claim
Patent Images

1. A semiconductor light emitting device comprising:

  • a first conductive semiconductor layer;

    an active layer on the first conductive semiconductor layer; and

    a second conductive semiconductor layer comprising a dual roughness structure on the active layer.

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