Thin film electroluminescent device

Details Thin film electroluminescent device Thin film electroluminescent device

1992-03-17

1993-01-26

Yusko, Donald J.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313502, 313506, H05B 3314

Patent

active

051824914

ABSTRACT:
A thin film electroluminescent (EL) device includes a pair of opposing electrodes formed on a substrate of a transparent electrical insulator, and an EL layer formed between the electrodes and covered at both surfaces with insulating layers respectively. Strontium sulfide is used as a host material of the EL layer, and its crystals tend strongly to have a (200) orientation, so that the resistance to free transit of electrons participating in emission of luminescence is substantially eliminated to ensure a higher brightness.

REFERENCES:
patent: 4720436 (1988-01-01), Ohseta et al.
patent: 4727004 (1988-02-01), Tanaka et al.
patent: 4751427 (1988-06-01), Barrow et al.
patent: 5099172 (1992-03-01), Taguchi et al.
Tanaka et al; MultiColor Electroluminescence in Alkaline Earth Sulfide Thin Film Devices; SID85 Digest; 1985; 218-221.

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