Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2005-06-14
2005-06-14
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C313S503000, C117S952000
Reexamination Certificate
active
06905635
ABSTRACT:
This invention presents a gallium nitride phosphor with superior light emitting characteristics, its method of manufacture, and a display device which uses the phosphor. By heat treatment or microwave irradiation of gallium nitride phosphor powder in an ambient containing essentially no H2or H2O, a phosphor is produced wherein the amount of H2and H2O gas evolved when heated in a vacuum is less than or equal to 0.2 cm3/g of phosphor and 2.0 cm3/g of phosphor respectively.
REFERENCES:
patent: 5926726 (1999-07-01), Bour et al.
patent: 6017807 (2000-01-01), Furukawa et al.
patent: 6337035 (2002-01-01), Itoh et al.
patent: 2002/0157596 (2002-10-01), Stockman et al.
Kameshima Masatoshi
Sato Yoshitaka
Tamaki Hiroto
Futaba Corporation
Koslow C. Melissa
Nichia Corporation
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