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SEMICONDUCTOR LIGHT EMITTING DEVICE

  • US 20100072501A1
  • Filed: 09/17/2009
  • Published: 03/25/2010
  • Est. Priority Date: 09/19/2008
  • Status: Active Grant
First Claim
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1. A semiconductor light emitting device comprising at least one concave on alight extraction surface opposite to a surface on which a semiconductor stack comprising a light emitting layer between a n-type semiconductor layer and a p-type semiconductor layer is mounted,wherein the concave has not less than two slopes each having a different slope angle in a direction that a diameter of the concave becomes narrower toward a bottom of the concave from an opening of the concave,wherein a slope having a gentle slope angle is provided with irregularities and a slope having a steep slope angle is a flat surface.

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