Process for making an electroluminescent lamp

Details Process for making an electroluminescent lamp Process for making an electroluminescent lamp

1983-08-31

1985-08-13

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 49, 427 66, 219 68, H01J 902

Patent

active

045347433

ABSTRACT:
A process for making thin flexible electroluminescent lamps comprises continuously feeding a flexible strip of transparent insulating material which serves as the carrier for performing various process steps, as well as becoming part of the finished lamp itself. The strip is provided with a thin transparent conductive layer. An epoxy/phosphor mixture is continuously applied to a controlled thickness over the conductive layer and cured in an oven. Another conductive layer is continuously applied over the cured epoxy/phosphor layer on the carrier sheet and dried. In a preferred embodiment, lamp members are severed from the roll, and a narrow groove is made in the last applied conductive layer to divide the conductive layer into two exposed electrode areas to which the lamp terminals are connected. In another embodiment, the conductive layer on the plastic carrier sheet is continuously subdivided by vaporizing the conductive material to form a narrow groove with an electric arc. In this latter case, the conductive layers on the edges of the plastic carrier sheet serve as the two exposed electrode areas and receive terminals connected at the edges.

REFERENCES:
patent: 2928974 (1960-03-01), Mash
patent: 3519871 (1970-07-01), Kanie
patent: 3895208 (1975-07-01), Kraus
patent: 4425496 (1984-01-01), Fur et al.
patent: 4455324 (1984-06-01), Kamijo et al.

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