Method of making a manganese-activated zinc sulphide electrolumi

Details Method of making a manganese-activated zinc sulphide electrolumi Method of making a manganese-activated zinc sulphide electrolumi

1974-07-26

1976-10-05

Cooper, Jack

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 57, 427 66, 2523016S, C09K 1116

Patent

active

039845869

ABSTRACT:
A method of making a manganese-activated zinc sulphide electroluminescent powder for D.C. excitation which contributes to a high electroluminescent brightness, high breakdown voltage and high uniformity and fineness of luminosity of the luminous area in an electroluminescent panel. The feature of this method is to fire a mixture of raw zinc sulphide powder and a manganese compound in an atmosphere of carbon disulphide with a carrier gas.

REFERENCES:
patent: 3140999 (1964-07-01), Lehmann
patent: 3178611 (1965-04-01), Vogel
patent: 3704232 (1972-11-01), Frey et al.
patent: 3775173 (1973-11-01), Yamamoto et al.

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