Method of manufacturing thin film EL device

Details Method of manufacturing thin film EL device Method of manufacturing thin film EL device

1991-01-31

1992-07-28

Pianalto, Bernard

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 69, 427124, 4271261, 427250, 4272552, 427294, 427404, 4274197, B05D 506

Patent

active

051339889

ABSTRACT:
The disclosure describes a thin film EL device including a luminescent layer made of column polycrystals formed by independently evaporating luminescent host material and an activator and then combining the evaporated substances on a substrate. Electrons in the luminescent layer which are accelerated by an electric field applied from the outside efficiently collide against the activator without being intercepted by interfaces between crystalline particles. The thin film EL device of the present invention can be used for display, illumination, writing, reading out, and erasure of signals of photorecording mediums.

REFERENCES:
patent: 4020389 (1977-04-01), Dickson et al.

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