Direct current electroluminescent devices

Details Direct current electroluminescent devices Direct current electroluminescent devices

1982-12-01

1985-07-16

Smith, Alfred E.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

427 70, H05B 3310, H05B 3320

Patent

active

045298858

ABSTRACT:
A direct current electroluminescent device having a phosphor layer and coating electrodes, at least one of which is translucent, which has interposed between the phosphor layer and at least one of said electrodes a thin non-planar layer of an electrically non-conducting substance. The non-planar layer may have a cross section of undulating outline or may be a discontinuous layer, e.g. in the form of closely spaced dots. Preferably the non-planar layer is translucent and is arranged between the phosphor layer and a translucent electrode. Suitable materials for the non-planar layer include silicon monoxide, silicon dioxide, germanium dioxide, magnesium fluoride, cadmium fluoride, yttrium fluoride, yttrium oxide, zinc sulphide, copper sulphide.

REFERENCES:
patent: 2829265 (1958-04-01), Harper
patent: 3731353 (1973-05-01), Vecht
patent: 4015166 (1977-03-01), Ohshima et al.
I. F. Chang, J. J. Cuomo and E. S. Yang, "Fabrication of Thin Film Zinc Silicate Phosphor", IBM Technical Disclosure Bulletin, vol. 22, No. 6, (Nov. 1979), pp. 2563-2564.

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