Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2007-03-13
2007-03-13
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C252S30160F, C257S098000, C313S503000
Reexamination Certificate
active
10776339
ABSTRACT:
A phosphor (A) comprising a host material composed of a compound having a garnet crystal structure represented by the general formula (I):in-line-formulae description="In-line Formulae" end="lead"?M1aM2bM3cOd (I)in-line-formulae description="In-line Formulae" end="tail"?(wherein M1is a divalent metal element, M2is a trivalent metal element, M3is a tetravalent metal element containing at least Si, a is the number of 2.7 to 3.3, b is the number of 1.8 to 2.2, c is the number of 2.7 to 3.3, and d is the number of 11.0 to 13.0), and a luminescent center ion incorporated in the host material; a light emitting device (B) comprising the phosphor as a wavelength conversion material and a semiconductor light emitting element capable of emitting a light in the range of from ultraviolet light to visible light; and a display (C) and a lighting system (D) using the light emitting device (B) as a light source. The above phosphor can be readily produced, and can provide a light emitting device having a high color rendering property.
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Kijima Naoto
Shimomura Yasuo
Koslow C. Melissa
Mitsubishi Chemical Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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