Thin film electroluminescence device

Details Thin film electroluminescence device Thin film electroluminescence device

1986-01-15

1988-01-05

DeMeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313509, H05B 3318, H05B 3322

Patent

active

047178582

ABSTRACT:
A thin film electroluminescence device comprising an electrode layer, an emitting layer and an electrode layer formed on a substrate one over another, and an insulating layer optionally interposed between the three layers, the emitting layer being made of CaS serving as a host material and doped with Eu.sup.2+ providing luminescent centers.
The emitting layer comprising a novel combination of host material and luminescent center produces a red electroluminescence with a high brightness.

REFERENCES:
patent: 3283194 (1966-11-01), Rulon
patent: 4213074 (1980-07-01), Kawaguchi et al.
patent: 4365184 (1982-12-01), Higton et al.
patent: 4442377 (1984-04-01), Higton et al.
patent: 4599539 (1986-07-01), Ishizuka et al.
"Activators & Co-Activators in Calcium Sulfide Phosphors" By W. Lehmann, Journal of Luminescence, (1972), North-Holland Pub. Co., pp. 87 and 100.
"Cathodoluminescence of CaS:Ce.sup.2+ and CaS:Eu.sup.2+ Phosphors" By W. Lehmann et al., Luminescence of Solid Solutions, vol. 118, No. 3, Mar. 1971, pp. 477-482.

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