Patent ID: 8889517

Claim:
A light emitting diode (LED) device comprising: a substrate; an LED for emitting light at a first wavelength; electrical circuitry for providing power to the LED from external sources; a wavelength conversion material covering the LED for converting light emitted at the first wavelength to light of at least a second wavelength, which combined with the light of the first wavelength forms a broadband light source; and a multi-layer dielectric structure of alternating high and low index material layers in between the substrate and the LED providing both electrical insulation for the electrical connections and reflectivity for the broadband light source; wherein the multi-layer dielectric structure has a first area below the LED with a first thickness providing electrical isolation and heat transfer to the substrate, and a second area spaced apart from the LED with a second thickness thicker than the first thickness surrounding the LED providing electrical isolation and reflectivity for the light; wherein the first and second thickness are in perpendicular direction from the substrate.