Thin film electroluminescence structure

Details Thin film electroluminescence structure Thin film electroluminescence structure

1982-02-08

1983-11-22

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

313499, 313503, 313505, 313506, 313509, 313510, 427 66, 428336, 428432, 428698, 428699, 428701, 428917, H05B 3312, B32B 1706

Patent

active

044169337

ABSTRACT:
Described herein is a thin film electroluminescence structure comprising a substrate layer (1), a first electrode layer (2), a second electrode layer (10) disposed at a distance from the first electrode layer (2), and a luminescence layer (6) disposed between the first (2) and the second electrode layer (10). Additional layer structures (3 to 5, 7 to 9) are disposed between the electrode layers (2 and 10) and the luminescence layer (6), said structures having current limiting and chemically protecting functions. The invention is based on the idea that it is possible to separate the functions of a chemical barrier and a current limitation from each other, whereby the production of the chemical protection in itself takes place without voltage losses, in other words, with a material whose electrical conductivity is essentially higher than the electrical conductivity of the current limiter. Hence, there is a layer (3, 8) functioning as a chemical barrier on both sides of the luminescence layer (6), whereas there is a current limiting layer only on one side, either as a separate resistive or dielectric layer (8), or as integrated in the material layer constituting the chemical barrier.

REFERENCES:
patent: 3133222 (1964-05-01), Cerulli
patent: 3315111 (1967-04-01), Joffe
IBM Tech. Disclosure Bulletin, vol. 22, (No. 4), Sep. 1979, "Direct Current Thin Film Electroluminescence Device".

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