Photoconductive-electroluminescent memory effect polychromatic d

Details Photoconductive-electroluminescent memory effect polychromatic d Photoconductive-electroluminescent memory effect polychromatic d

1990-02-23

1991-10-01

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

313506, 313507, 313512, H01J 162

Patent

active

050536796

ABSTRACT:
A photoconductive-electroluminescent, memory effect polychromatic display defining a first and second inverted structure. The first structure incorporates a first transparent substrate equipped with a first electroluminescent layer El.sub.1 placed between a first and a second electrode system, which are connected to a first electrical source for exciting certain zones of layer El.sub.1. The second inverted structure incorporates a second substrate equipped with a second electroluminescent layer El.sub.2 and a photoconductive layer stacked on one another. These two layers are inserted between a third and a fourth electrode system which are connected to a second electrical source for exciting certain zones of the layer El.sub.2. The electroluminescent layer El.sub.1 has a monochromatic or dichromatic emission spectrum and the electroluminescent layer El.sub.2 has a monochromatic emission spectrum essentially complementary to layer El.sub.1.

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patent: 4954746 (1990-09-01), Taniguchi et al.

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