Phosphor having resistance to deterioration caused by...

Details Phosphor having resistance to deterioration caused by... Phosphor having resistance to deterioration caused by...

2007-09-18

2007-09-18

Koslow, C. Melissa (Department: 1755)

Compositions

Inorganic luminescent compositions

Zinc or cadmium containing

C313S486000

Reexamination Certificate

active

11130905

ABSTRACT:
A manganese-activated zinc silicate phosphor according to the present invention satisfies 0<β−α≦0.5 and 1.7≦β, where a value α is a ratio of a number of zinc atoms to a number of silicon atoms in a surface region of a phosphor particle, including a surface of the phosphor particle and a vicinity thereof, and a value β is a ratio of a number of zinc atoms to a number of silicon atoms in a whole of the phosphor particle.

REFERENCES:
patent: 2004/0239245 (2004-12-01), Kawamura et al.
patent: 2000282029 (2000-10-01), None
patent: WO 99/28409 (1999-06-01), None
patent: WO 2005/031785 (2005-04-01), None

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