Latticework with plurality of overlying lines

Details Latticework with plurality of overlying lines Latticework with plurality of overlying lines

1996-06-24

1998-11-03

Bray, W. Donald

Metal working

Method of mechanical manufacture

Electrical device making

29830, 29848, 72324, 174262, H05K 336, H05K 302

Patent

active

058291270

ABSTRACT:
A circuit board fabrication method and system is disclosedin which circuit boards are fabricated by adhesively applying circuit conductive traces to a circuit board substrate and subsequently affixing the arrangement of the circuit traces on the substrate by encapsulating and embedding the circuit traces within a circuit board covering material that becomes flowable and adhesive when subjected to heat and pressure. The circuit traces are created and applied to circuit board substrate areas by a punch and die assembly. A laminated sheet of circuit trace material is provided between plates of the apparatus wherein the plates have matching circuit trace shaped cutouts. Punch elements having a mating circuit trace shape are slidable within the cut-outs wherein a circuit trace is punched from the circuit trace material when the punch elements slide between the plates. After a circuit trace is punched, the punch elements then stamp the circuit trace to the substrate. Since the circuit trace material is a sheet laminate having at least a conductor, a dielectric or insulator and a bottommost adhesive film, the circuit traces adhesively bind to the substrate during the stamping process. Further, the dielectric layer allows such circuit traces to be iteratively stamped on top of one another substantially without concern for electrical interference at circuit trace overlaps.

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