Method of making an octocoupler

Details Method of making an octocoupler Method of making an octocoupler

1984-08-31

1987-02-24

Czaja, Donald

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1562726, 1562733, 156305, 1563082, 156372, 357 19, 427 40, B32B 3126

Patent

active

046455515

ABSTRACT:
A process for bonding the surfaces of two polymeric materials and an improved optocoupler manufactured therewith is provided. Optocouplers are typically manufactured with the emitter and detector devices enclosed within a coupling material such as silicone gel for providing an electrical dielectric while being transparent to light. The coupling material is enclosed within an encapsulating material that is both reflective to light, protective against mechanical forces, and opaque to ambient light. The disclosed process bonds the coupling material to the encapsulating material to eliminate creepage paths and prevent the resultant voltage breakdown between electrodes along the interface of the two materials. The coupling material is treated so that active functional groups are formed on the surface, leaving it in an activated state. The surface of the second material is placed over the treated surface of the first material so that a chemical bond is formed.

REFERENCES:
patent: 3655481 (1972-04-01), Hall
patent: 4223074 (1980-09-01), Yoshida et al.
patent: 4271365 (1981-06-01), Adams
patent: 4399014 (1983-08-01), Engle

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