×

Semiconductor light-emitting device

DC
  • US 7,804,101 B2
  • Filed: 07/23/2004
  • Issued: 09/28/2010
  • Est. Priority Date: 07/24/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A semiconductor light emitting diode comprising a substrate, an ohmic electrode and a plurality of semiconductor layers and configured so that light generated in said plurality of semiconductor layers is emitted from said ohmic electrode or from said substrate,wherein said substrate comprises sapphire,protruding portions are formed in a repeating pattern within a surface of the substrate so as to define a polygon as the repeating pattern in plan view of the substrate while the rest of the surface is substantially flat so as to scatter or diffract light generated in said semiconductor layers, andcross sections of the protruding portions taken along planes orthogonal to the surface of the substrate are semi-circular in shape.

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