Solid-state light source
AssigneeGoldeneye, Inc.
InventorsKarl W. Beeson, Scor M. Zimmerman, William R. Livesay
Life of this patent
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Abstract
A solid-state light source includes at least one stack of light emitting elements. The elements are an inorganic light emitting diode chip and at least one wavelength conversion chip or the elements are a plurality of light emitting diode chips and one or more optional wavelength conversion chips. The wavelength conversion chip may include an electrical interconnection means. The light emitting diode chip may include at least one GaN-based semiconductor layer that is at least ten microns thick and that is fabricated by hydride vapor phase epitaxy. A method is described for fabricating the solid-state light source.
Claims17
A solid-state light source comprising a stack of elements, said elements comprising:
- a substrate-free inorganic light emitting diode chip;
- and
- a first wavelength conversion chip,
- wherein said substrate-free inorganic light emitting diode chip has a multilayer semiconductor structure that includes a first doped layer, a first electrode in electrical contact with said first doped layer, a second doped layer, a second electrode in electrical contact with said second doped layer, and an active region interposed between said first doped layer and said second doped layer, wherein said active region emits internally generated light in a first wavelength range and wherein said multilayer semiconductor structure is at least 10 microns thick;
- and
- wherein said first wavelength conversion chip is attached to said inorganic light emitting diode chip by a transparent bonding layer and wherein said first wavelength conversion chip converts at least a portion of said light of a first wavelength range into light of a second wavelength range, said second wavelength range being different from said first wavelength range.
Dependencies are inferred from the claim text.