Light-emitting device with coated phosphor

Details Light-emitting device with coated phosphor Light-emitting device with coated phosphor

2007-04-10

2007-04-10

Guharay, Karabi (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S501000, C252S30140R

Reexamination Certificate

active

09978995

ABSTRACT:
The invention describes a light-emitting device (1) which comprises a light-emitting diode and a phosphor layer. To prolong the useful life of the light-emitting device (1), a phosphor (4) in the phosphor layer (2) has a water-resistant coating.

REFERENCES:
patent: 4152624 (1979-05-01), Knaebel
patent: 5254849 (1993-10-01), Murakami et al.
patent: 5877589 (1999-03-01), Morgan et al.
patent: 6045721 (2000-04-01), Zachau et al.
patent: 6153123 (2000-11-01), Hampden-Smith et al.
patent: 6180029 (2001-01-01), Hampden-Smith et al.
patent: 6464898 (2002-10-01), Tomoike et al.
patent: 19800983 (1998-12-01), None

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