Phosphorescent material

Details Phosphorescent material Phosphorescent material

1996-04-12

1998-03-03

Nold, Charles

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite powder

428629, 428639, 2523014R, C09K 1108

Patent

active

057232245

ABSTRACT:
A phosphorescent material has an excellent life time characteristic when it is applied to display device such as a fluorescent display device and includes a body portion composed of alkali metal and an oxide, and a protective coat formed over a surface of the body portion. The protective coat is composed of an oxide containing at least one element selected from the group consisting of Al, Ti, Si, Zn, Sn, Bi, Sb, Ce, Y, Ta, Gd, Ru and Ga.

REFERENCES:
patent: 4691140 (1987-09-01), Sakakibara et al.
patent: 5336080 (1994-08-01), Sumitomo et al.
patent: 5619098 (1997-04-01), Toki et al.

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