Method of making a Z axis interconnect circuit

Details Method of making a Z axis interconnect circuit Method of making a Z axis interconnect circuit

1996-07-23

1999-02-23

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29840, 29843, H05K 336

Patent

active

058731610

ABSTRACT:
Method for making Z-axis interconnections between adjacent circuit layers with electrically conductive traces, in multi-layered circuits, include connecting a conducting member of a deformable material to a circuit board layer and depositing an adhesive layer over an adjacent circuit board layer. The adjacent circuit layers are aligned, with the conducting member substantially collinear with the conductive traces of the adjacent circuit layers, and the circuit layers are brought together by pressure, such that the conducting member penetrates the adhesive layer and deforms until it "cracks". The cracking exposes fresh (unoxidized) material that contacts a conductive trace, joining the circuit layers together and creating a low resistance electrical connection. The adhesive serves to bound expansion of the deformable conducting member, reducing any potential contacts with adjacent conducting members.

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patent: 5502884 (1996-04-01), Ladouceur

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