White light source

Details White light source White light source

2005-07-19

2005-07-19

Nelms, David (Department: 2818)

Active solid-state devices (e.g., transistors, solid-state diode

Incoherent light emitter structure

Plural light emitting devices

C257S013000, C257S079000, C257S918000, C438S022000, C438S024000

Reexamination Certificate

active

06919584

ABSTRACT:
A colorless light approaching that of white light in nature, is produced by using a blue color LEDs and a green color LED are covered with a red color phosphorescent glue and a yellow phosphorescent glue in separate layers or a mixed layer.

REFERENCES:
patent: 6252254 (2001-06-01), Soules et al.
patent: 6417019 (2002-07-01), Mueller et al.
patent: 2002/0070681 (2002-06-01), Shimizu et al.
patent: 2004/0089864 (2004-05-01), Chi et al.

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