Compositions – Inorganic luminescent compositions – Zinc or cadmium containing
Patent
1989-07-28
1991-04-09
Cooper, Jack
Compositions
Inorganic luminescent compositions
Zinc or cadmium containing
C09K 1162
Patent
active
050062778
ABSTRACT:
A fluorescent composition having improved luminance, which is composed of a phosphor consisting essentially of a sulfide represented by the formula: (Zn.sub.1-x, Cd.sub.x)S, [wherein x is a number satisfying a condition of 0.ltoreq.x.ltoreq.1], as the host material; and indium oxide (In.sub.2 O.sub.3), both being mixed or adhered each other, and in which zinc oxide (ZnO) and/or a compound of zinc which can be converted to zinc oxide (ZnO) by heat-treatment is adhered onto the surface of said phosphor or the respective surfaces of said phosphor and said indium oxide.
REFERENCES:
patent: 4275333 (1981-06-01), Kagami et al.
patent: 4680231 (1987-07-01), Yamamaura et al.
patent: 4791336 (1988-12-01), Morimoto et al.
patent: 4831269 (1989-05-01), Kagami et al.
Database Derwent World Patent Index, AN 84-223103 (36), "Fluorescent Body for Producing Low Speed Electron Rays-".
Takahashi Fumio
Yoneshima Kunihiko
Cooper Jack
Kasei Optonix Ltd.
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