Electroluminescent device comprising electroluminescent layer co

Details Electroluminescent device comprising electroluminescent layer co Electroluminescent device comprising electroluminescent layer co

1975-07-18

1977-05-31

Rolinec, Rudolph V.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

2523014R, 313468, 313503, 313506, H01J 162

Patent

active

040271927

ABSTRACT:
The device comprises an electroluminescent layer and means for exciting the electroluminescent layer to luminescence with an electric field. The electroluminescent layer comprises a cathodoluminescent phosphor normally having a bulk resistivity greater than 10.sup.11 ohm-centimeters containing a sufficient quantity of indium oxide and/or tin oxide therein to produce a bulk resistivity of less than 10.sup.10 ohm-centimeters in the electroluminescent layer. The preferred electroluminescent layers are red emitting solid solutions of yttrium oxide, europium oxide, and indium oxide which are prepared by radio frequency sputtering.

REFERENCES:
patent: 2880346 (1959-03-01), Nicoll et al.
patent: 3470411 (1969-09-01), Ozawa et al.
patent: 3649553 (1972-03-01), Tanaka et al.

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