Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1988-06-02
1989-07-11
Kucia, R. R.
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
361414, H05K 114
Patent
active
048474460
ABSTRACT:
A printed circuit board is described in which an electrically insulating laminate material has first and second sides. An electrically conducting first circuit pattern is embedded in the first side of the laminate material, and an electrically conducting second circuit pattern is embedded in the second side of the laminate material electrically insulated from the first circuit pattern by the laminate material. A solid interconnection member extends through the laminate material and electrically contacts both the first and second circuit patterns at selected locations thereof.
The method for fabricating the board includes as a first step the fabrication of a first board panel having a raised electrically conducting first circuit pattern extending from a base layer of conductive material. A second board panel is also fabricated, having a raised electrically conducting second circuit pattern extending from a its base layer of conductive material and a raised electrically conducting third circuit pattern extending from the second circuit pattern. The first board panel is laminated to the second board panel with a laminate insulating material disposed therebetween electrically insulating the first circuit pattern from the second circuit pattern and with the third circuit pattern electrically contacting the first circuit pattern at selected portions thereof. Finally, the base layers of conductive material are removed from the laminate insulating material.
REFERENCES:
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patent: 2883447 (1959-04-01), Dahl
patent: 2925645 (1960-02-01), Bell et al.
patent: 3791858 (1974-02-01), McPherson et al.
patent: 3889363 (1975-06-01), Davis
patent: 4095866 (1978-06-01), Merill
patent: 4591220 (1986-05-01), Impey
patent: 4598166 (1986-07-01), Neese
patent: 4606788 (1986-08-01), Pelligrino
patent: 4689110 (1987-08-01), Liebowitz
Decker Richard W.
King David R.
Lee Mark S.
Kucia R. R.
Sutcliff W. G.
Westinghouse Electric Corp.
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