Polychromatic electro luminescence display device

Details Polychromatic electro luminescence display device Polychromatic electro luminescence display device

1985-12-13

1988-01-05

Boudreau, Leo H.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313507, 313509, H05B 3314, H05B 3326

Patent

active

047178590

ABSTRACT:
The present invention relates to an electroluminescent display device with polychromatic emissions which comprises one photo electroluminescent layer containing a composition of Na.sub.0.5 Tb.sub.0.25 Eu.sub.0.25 WO.sub.4 which is combined with an existent fluorescent layer, the thickness of which is one-third that of the fluorescent layer.

REFERENCES:
patent: 3339075 (1967-08-01), Szepesi
patent: 3854070 (1974-12-01), Vlasenko et al.

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