Light emitting diode having electrode extensions for current spreading

  • US 8,680,559 B2
  • Filed: 11/08/2010
  • Issued: 03/25/2014
  • Est. Priority Date: 11/16/2009
  • Status: Active Grant
First Claim
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1. A light emitting diode, comprising:

  • a substrate comprising a first edge and a second edge opposite to each other;

    a light emitting structure disposed on the substrate, the light emitting structure comprising a first semiconductor layer and a second semiconductor layer;

    a plurality of first electrode pads arranged on an upper surface of the first semiconductor layer, the first electrode pads arranged in a vicinity of the first edge;

    a plurality of second electrode pads arranged on the second semiconductor layer, the second electrode pads arranged in a vicinity of the second edge;

    a plurality of first extensions, each first extension extending from a first electrode pad; and

    a plurality of second extensions, each second extension extending from a second electrode pad,wherein the first extensions comprise intrusion parts extending in a direction from the first edge to the second edge, the intrusion parts being spaced apart from each other and not is connecting with the second electrode pads,wherein the second extensions comprise;

    intrusion parts extending in a direction from the second edge to the first edge, anda second extension connection part connecting adjacent second electrode pads to each other,wherein the first extension intrusion parts each extend into a region between two of the second extension intrusion parts, andwherein at least one of the second extension intrusion parts extends from the second extension connection part to the vicinity of the first edge.

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