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Light-polarizing structure

  • US 8,378,567 B2
  • Filed: 11/05/2008
  • Issued: 02/19/2013
  • Est. Priority Date: 11/21/2007
  • Status: Active Grant
First Claim
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1. A light-emitting device, comprising:

  • a substrate;

    at least one light-emitting structure positioned on the substrate, wherein the light-emitting structure includes a p-type semiconductor layer; and

    a light-collimating structure positioned in the p-type semiconductor layer of the light-emitting structure, the light-collimating structure includes a plurality of pillars and a plurality of ring-shaped holes surrounding the pillars, wherein the depth of the ring-shaped hole is smaller than or equal to the thickness of the p-type semiconductor layer.

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