Phosphor and manufacturing method of the same, and light...

Details Phosphor and manufacturing method of the same, and light... Phosphor and manufacturing method of the same, and light...

2005-09-06

2008-11-04

Koslow, C. Melissa (Department: 1793)

Compositions

Inorganic luminescent compositions

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

C252S30160F, C313S503000, C257S098000

Reexamination Certificate

active

07445730

ABSTRACT:
To provide a phosphor having a broad emission spectrum in a range of blue color (peak wavelength from 400 nm to 500 nm), having a broad and flat excitation band in the range of near ultraviolet/ultraviolet, and having excellent emission efficiency and emission intensity/luminance. The phosphor is expressed by a general composition formula MmAaBbOoNn:Z (where element M is at least one or more kind of element having bivalent valency, element A is at least one or more kind of element having tervalent valency, element B is at least one or more kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is at least one or more kind of element acting as an activator.), satisfying 5.0<(a+b)/m<9.0, 0≦a/m≦2.0, 0≦o<n, n=2/3m+a+4/3b−2/3o, and having an emission spectrum with a maximum peak wavelength from 400 nm to 500 nm under an excitation of the light in a wavelength range from 350 nm to 430 nm.

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