Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1984-10-10
1985-11-19
Kucia, R. R.
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
361406, 361414, H05K 103
Patent
active
045544050
ABSTRACT:
A high density dimensionally stable encapsulated circuit board and a method of making such a board is described. A curable adhesive is utilized to bond insulated wires to a substrate, the dimensional stability of which is maintained by a sheet of relatively thick copper foil. Since the adhesive is cured and since the copper foil returns to the same dimensions when thermally, mechanically or chemically cycled, the entire composite is dimensionally stable.
At each location where a connection is to be made to a wire, the wire has a non-linear geometrical portion. The increased dimensional stability plus non-linear shaped portion of the wires allows connections to be made to the board utilizing a very small drill. The result is a high density stable circuit board.
REFERENCES:
patent: 3674914 (1972-07-01), Burr
patent: 3955024 (1976-05-01), Goldman et al.
patent: 4030190 (1977-06-01), Varker
patent: 4140831 (1979-02-01), Miller
patent: 4287014 (1981-09-01), Gaku et al.
patent: 4388136 (1983-06-01), Huie
patent: 4395459 (1983-07-01), Herschdorfer et al.
International Business Machines - Corporation
Kucia R. R.
Levy Mark
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