Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2005-05-31
2005-05-31
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C252S30160F, C313S582000, C313S584000, C313S641000, C313S486000
Reexamination Certificate
active
06899825
ABSTRACT:
A blue-emitting bivalent metal silicate phosphor improved in the luminance efficiency, the durability against deterioration by VUV and the powder characteristic, and a process for its production, a phosphor paste composition employing such an improved phosphor, and a VUV excitation type light-emitting device having high luminance. The phosphor is an Eu-activated bivalent metal silicate phosphor represented by the compositional formula CaMgSi2O6:Eu, wherein a specific amount of at least one member among La, Ba, Sr, Zn, Y, Ce, In, Bi, chlorine, bromine and iodine, is contained in the crystalline matrix.
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R. Yoshimatsu, et al., Asia Display/IDW '01, Proceedings of The 21stInternational Display Research Conference in conjunction with The 8thInternational Display Workshops, pp. 1115-1118, “Feasibility Study of Silicate Phosphor CaMgSi2O6:Eu2+As Blue PDP Phosphors”.
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E. Hata, et al., The Institute of Electronics, Information and Communication Engineers, Technical Report of IEICE, EID2002-65, vol. 102, No. 467, pp. 9-12, “Luminescent Characterisitics of CaMgSi2O6Phosphors Doped With Several Rare Earth Elements”, Nov. 2002.
Hisamune Takayuki
Matsuda Kouhei
Kasei Optonix Ltd.
Koslow C. Melissa
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