×

LED with substrate modifications for enhanced light extraction and method of making same

  • US 7,759,682 B2
  • Filed: 08/23/2005
  • Issued: 07/20/2010
  • Est. Priority Date: 07/02/2004
  • Status: Active Grant
First Claim
Patent Images

1. A light emitting diode (LED) comprising:

  • a conductive substrate having a first surface and a second surface, a portion of the first surface having a moth-eye morphology formed in said substrate by a maskless etching process;

    a light emission region on the second surface, the light emission region including an active layer between first and second oppositely doped layers;

    a first contact on the first surface and in contact with one of the first or second doped layers;

    a second contact in contact with the other of the first or second doped layers; and

    a current spreading structure in contact with the portion of the first surface having the moth-eye morphology and the first contact.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×