Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2005-11-01
2005-11-01
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C252S30160R, C313S468000
Reexamination Certificate
active
06960310
ABSTRACT:
A phosphor for vacuum ultraviolet ray-excited light-emitting elements which comprises a compound represented by the following formula (I):in-line-formulae description="In-line Formulae" end="lead"?M11−a−b−c−dM2aM3bM41−eM511−fM6c−d+e+fO19−(b+c+f)/2 (I)in-line-formulae description="In-line Formulae" end="tail"?(wherein M1is at least one element selected from the group consisting of La, Y and Gd, M2is at least one element selected from the group consisting of Ce and Tb, M3is at least one element selected from the group consisting of Ca, Sr and Ba, M4is at least one element selected from the group consisting of Mg and Zn, M5is at least one element selected from the group consisting of Al and Ga, and M6is at least one element selected from the group consisting of Mn and Eu, and a, b, c, d, e and f are numbers satisfying the conditions of 0≦a<1, 0≦b≦0.6, 0≦c≦0.5, 0≦d≦0.5, 0≦e<1, 0≦f<1, a+b+c+d<1 and 0<c+d+e+f), respectively.
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T. Hisamune et al., “Development of Mn2+Activated Ba-Sr-Mg-aluminate Green Phosphors for PDPs”, The 3rdInternational Display Workshops, J. Illum. Engng. Inst. Jpn., vol. 83, No. 5 (1999), pp. 306-313 with Abstract.
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Ezuhara Takayoshi
Imanari Yuichiro
Miyazaki Susumu
Koslow C. Melissa
Sumitomo Chemical Company Limited
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