Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1987-04-03
1988-10-04
Kittle, John E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428901, 174 685, B32B 900
Patent
active
047755733
ABSTRACT:
A multilayer printed circuit board which reliably and economically marries conventional copper clad printed circuit board technology with polymeric conductors and insulators. Reliability is enhanced by forming all solder pads of copper, providing conductive tails on solder pads which are to be connected by polymeric inks, and ultimately forming a solder resist over all but the solder pads. As a result, polymer inks can be applied to both sides of the board, and the completed board can be subject to conventional solder dipping or wave soldering operations. According to one feature of the invention, a thin dielectric layer can be applied as intermediate to planar conductive layers which form a power plane having built-in distributed capacitance for decoupling.
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Kittle John E.
Ryan P. J.
West-Tronics, Inc.
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