Electricity: electrical systems and devices – Miscellaneous
Patent
1988-04-15
1990-04-17
Thompson, Gregory N.
Electricity: electrical systems and devices
Miscellaneous
361397, H05K 111
Patent
active
049185748
ABSTRACT:
A multilayer circuit board having a conformal layer of an insulating material separating a circuit core from an adjacent insulating layer is disclosed. The conformal layer encapsulates the substrate and conductive pattern of circuit lines in the circuit core, thereby reducing failures caused by impurities trapped during lamination. The multilayer circuit board is manufactured by coating at least one circuit core with the conformal layer of insulating material before final lamination of the circuit cores into a multilayer circuit board.
REFERENCES:
patent: 3509624 (1970-05-01), Boucher
patent: 3704678 (1973-06-01), Hill
patent: 3932932 (1976-01-01), Goodman
patent: 4591220 (1986-05-01), Impey
patent: 4606787 (1986-08-01), Pelligrino
patent: 4789423 (1988-12-01), Pelligrino
Hoffarth Joseph G.
Lazzarini Donald J.
Welsh John A.
Wiley John P.
International Business Machines - Corporation
Klitzman Maurice H.
Mims Jr. David A.
Schecter Manny W.
Thompson Gregory N.
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