Electroluminescent display having dark field semiconducting laye

Details Electroluminescent display having dark field semiconducting laye Electroluminescent display having dark field semiconducting laye

1983-09-16

1985-07-30

Lindsay, Robert

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313499, 313500, N01J 162

Patent

active

045324549

ABSTRACT:
An electroluminescent display is constructed as a laminate with a transparent front electrode and a metallic rear electrode sandwiching a layer of electroluminescent phosphor. A layer of light absorbing semiconducting material is interposed between the phosphor layer and the rear electrode. The semiconducting layer functions as a dark field increasing the contrast of the display. Furthermore, the semiconducting layer may be used in the fabrication of driver circuits integral to the display.

REFERENCES:
patent: 3650824 (1972-03-01), Szepesi et al.
patent: 3920491 (1975-11-01), Yonezu
patent: 4188565 (1980-12-01), Mizukami et al.
patent: 4455506 (1984-06-01), Ayyagari et al.

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