×

Luminescent ceramic for a light emitting device

  • US 7,361,938 B2
  • Filed: 06/03/2004
  • Issued: 04/22/2008
  • Est. Priority Date: 06/03/2004
  • Status: Active Grant
First Claim
Patent Images

1. A structure comprising:

  • a semiconductor light emitting device comprising a light emitting layer disposed between an n-type region and a p-type region; and

    a first ceramic layer disposed in a path of light emitted by the light emitting layer, the first ceramic layer comprising a wavelength converting material, wherein the first ceramic layer is a solid agglomerate of phosphor particles, substantially free of binder material;

    wherein the semiconductor light emitting device is attached to a host substrate, and the first ceramic layer is attached to a surface of the semiconductor light emitting device opposite the host substrate.

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