Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2005-02-01
2005-02-01
Patel, Vip (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C252S30160S, C362S084000
Reexamination Certificate
active
06850002
ABSTRACT:
A device for the generation of specific colored light including white light by luminescent down conversion and additive color mixing based on a light-emitting diode (LED) comprising a semiconductor light-emitting layer emitting near UV light about 370-420 nm or blue light about 420-480 nm and phosphors which absorb completely or partly the light emitted by the light-emitting component and emit light of wavelengths longer than that of the absorbed primary light, wherein the light emitting layer of the light emitting component is preferably a Ga(In)N-based semiconductor; and at least one of the phosphors contains a metal sulfide fluorescent material activated with europium containing at least one element selected from the group consisting of Ba, Sr, Ca, Mg and Zn; and/or at least another phosphor which contains a complex thiometalate fluorescent material activated with either europium, cerium or both europium and cerium containing 1) at least one element selected from the group consisting of Ba, Sr, Ca, Mg and Zn and 2) at least one element selected from the group consisting of Al, Ga, In, Y, La and Gd.
REFERENCES:
patent: 5641582 (1997-06-01), Nire et al.
patent: 5670839 (1997-09-01), Noma et al.
patent: 5813752 (1998-09-01), Singer et al.
patent: 5847507 (1998-12-01), Butterworth et al.
patent: 6090200 (2000-07-01), Gray et al.
patent: 6153123 (2000-11-01), Hampden-Smith et al.
patent: 6155699 (2000-12-01), Miller et al.
patent: 6252254 (2001-06-01), Soules et al.
Danielson Earl
Devenney Martin
Ellens Andries
Giaquinta Daniel
Jermann Frank
Frishauf Holtz Goodman & Chick P.C.
Osram Opto Semiconductors GmbH
Patel Vip
Symyx Technologies Inc.
Zimmerman Glenn
LandOfFree
Light emitting device for generating specific colored light,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light emitting device for generating specific colored light,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light emitting device for generating specific colored light,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3504140