AC powder type EL panel and method of manufacturing the same

Details AC powder type EL panel and method of manufacturing the same AC powder type EL panel and method of manufacturing the same

1992-01-21

1993-09-21

Ryan, Patrick J.

Stock material or miscellaneous articles

Material designed to be responsive to temperature, light,...

428690, B32B 900

Patent

active

052467899

ABSTRACT:
An AC powder type EL panel includes an AC powder type EL element, thermoplastic adhesive layers formed on all surfaces of the AC powder type EL element, and a pair of protective films adhered to cover substantially the entire surfaces of the thermoplastic adhesive layers and having end portions to be fused to each other to seal the AC powder type EL element. A thickness ratio of the protective film to the thermoplastic adhesive layer is within the range of 5:1 to 2:1. Since the thermocompression-bonded end portions of the thermoplastic adhesive layers having poor moisture barrier properties are not exposed between the protective films at the end portions of the AC powder type EL panel, penetration of external moisture into the panel can be effectively prevented.

REFERENCES:
patent: 4767679 (1988-08-01), Kawachi
patent: 5107175 (1992-04-01), Hirano et al.

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