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US 6,855,271 B2Granted
Coated phosphor filler and a method of forming the coated phosphor filler
AssigneeAgilent Technologies, Inc.
InventorBee Yin Chua
Life of this patent
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Abstract
An improved coated phosphor filler for an optical device includes a plurality of individual phosphor filler particles, and a coating layer having a plastic substance coated on each of the phosphor filler particles.
Claims15
A coated phosphor filler, comprising:
- a plurality of individual phosphor filler particles;
- and
- a coating layer coated on the phosphor filler particles, wherein the coating layer comprises a plastic substance, wherein the phosphor filler particles are unstable phosphor compound particles coated with a moisture-proof barrier film, the coating layer being provided on the outer surface of said barrier film, wherein the thickness of the coating layer is at least twice the thickness of said barrier film.
A method for forming a coated phosphor filler, said method comprising:
- coating each of a plurality of individual phosphor filler particles with a moisture proof barrier film;
- and
- coating the outer surface of said moisture proof barrier film with a coating layer comprising a plastic substance, wherein the thickness of the coating layer is at least twice the thickness of the moisture proof barrier film.
A coated phosphor filler, comprising:
- a plurality of stable phosphor filler particles, wherein the stable phosphor filler particles comprise at least one member of the garnet phosphor family;
- and
- a coating layer coated on the phosphor filler particles, wherein the coating layer comprises a plastic substance, wherein the plastic substance comprises an optically transparent epoxy composition.
Dependencies are inferred from the claim text.