Light-emitting device having a phosphor particle layer with...

Details Light-emitting device having a phosphor particle layer with... Light-emitting device having a phosphor particle layer with...

2008-01-01

2008-01-01

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S498000, C313S506000

Reexamination Certificate

active

07315119

ABSTRACT:
A light emitting device having a die that includes a light source that generates light of a first wavelength and a layer of phosphor particles covering the die is disclosed. The phosphor particles convert a portion of the light of the first wavelength to light of a second wavelength. The light source can be fabricated by attaching the light source to a substrate, and converting the light source by applying a light converting layer that includes a volatile carrier material and particles of a phosphor that convert light of the first wavelength to light of the second wavelength over the light source. The volatile carrier material is then caused to evaporate leaving a layer of the phosphor particles over the light source. A binder material can be incorporated in the volatile carrier for binding the phosphor particles to one another after the volatile carrier material is evaporated.

REFERENCES:
patent: 5653830 (1997-08-01), Fleig et al.
patent: 2002/0185965 (2002-12-01), Collins et al.
patent: 2004/0090180 (2004-05-01), Shimizu et al.
patent: 2004/0104391 (2004-06-01), Maeda et al.
patent: 2004/0145312 (2004-07-01), Ouderkirk et al.
patent: 2004/0263073 (2004-12-01), Baroky et al.

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