LED and its fluorescent powder

Details LED and its fluorescent powder LED and its fluorescent powder

2011-04-05

2011-04-05

Koslow, C. Melissa (Department: 1734)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

Reexamination Certificate

active

07919011

ABSTRACT:
A fluorescent powder using YAG (yttrium aluminum garnet) as the substrate and cerium as the excitant, and having added thereto Tb (terbium) ions, Ga (gallium) ions, Yb (ytterbium) ions and Lu (lutetium) ions. The YAG (yttrium aluminum garnet) has the chemical formula of (Y1-x-y-z-p-qGdxTbyYbzLupCeq)3Al5O12. The invention also provides an organic film layer using the fluorescent powder, and a LED using the organic film layer.

REFERENCES:
patent: 6596195 (2003-07-01), Srivastava et al.
patent: 6753646 (2004-06-01), Liu et al.
patent: WO 2006/129228 (2006-12-01), None

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