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Light emitting device and light emitting device package

  • US 10,529,903 B2
  • Filed: 11/29/2017
  • Issued: 01/07/2020
  • Est. Priority Date: 09/01/2011
  • Status: Active Grant
First Claim
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1. A light emitting device, comprising:

  • a substrate having a front surface on which a plurality of protruding portions are formed;

    a first semiconductor layer of a first conductivity type formed to cover the plurality of protruding portions;

    a light emitting layer formed over the first semiconductor layer;

    a first electrode formed over the first semiconductor layer, and not contacting the light emitting layer;

    a second semiconductor layer of a second conductivity type formed over the light emitting layer; and

    a second electrode formed over the second semiconductor layer,wherein the plurality of protruding portions are made of a same material,wherein a portion of the front surface of the substrate, which is located between the plurality of protruding portions, is flatter than surfaces of the plurality of protruding portions, andwherein side surfaces of each of the plurality of protruding portions are concave in a cross-sectional view.

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