High contrast electroluminescent display panels

Details High contrast electroluminescent display panels High contrast electroluminescent display panels

1985-06-04

1987-06-09

DeMeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313505, 313509, H05B 3302, H05B 3322

Patent

active

046722645

ABSTRACT:
A d.c. or a.c. electroluminescent panel comprises a transparent substrate, a transparent first electrode film, a thin film phosphor layer, a control layer and a second electrode film. A black or dark colored material, less than 1 micron thick, is interposed between the thin film phosphor layer and the control layer to enhance the contrast of the panel whenever a voltage is applied across the thin film phosphor layer causing it to emit light.

REFERENCES:
patent: 4137481 (1979-01-01), Hilsum et al.
patent: 4143297 (1979-03-01), Fischer

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