Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1995-11-28
1997-07-15
Robinson, Ellis
Stock material or miscellaneous articles
Composite
Of inorganic material
428690, 428691, 428696, 428697, 428702, 428917, 2504831, 2504861, 2523014H, 2523014R, 313503, 313506, 313509, B32B 1800
Patent
active
056481810
ABSTRACT:
An inorganic thin film EL device comprises, on an insulating substrate 1, a back electrode 2, an insulating layer 3, a light emission layer 4, an insulating layer 3, and a transparent electrode 5 formed on the substrate 1 in this order. The emission layer comprises lanthanum fluoride and at least one member selected from the group consisting of rare earth element metals and compounds thereof. The rare earth element is, for example, cerium, praseodymium, neodium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and mixture thereof. The compounds maybe those compounds of the rare earth elements and fluorine, chlorine, bromine, iodine and oxygen. The rare earth element is preferably present in the emission layer in an amount of from 5 to 90 wt %.
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Fuji 'Xerox Co., Ltd.
Robinson Ellis
Speer Timothy M.
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