Anisotropically electrically conductive article

Details Anisotropically electrically conductive article Anisotropically electrically conductive article

1990-07-10

1993-11-16

Baker, Stephen M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

29874, 205125, 439 54, H05K 111, H05K 306, C25D 554, G01R 1073

Patent

active

052627187

ABSTRACT:
Low tortuosity porous polymer sheets (25 to 2000 pores per square millimeter) with metal plated in the pores so as to project beyond sheet surfaces provide uniaxial electrical interconnects. A first "flash" layer of metal is electrolessly plated in the pores and the "flash" coating of metal is then removed from the sheet surface to isolate the pores electrically from one another. Further plating is then applied only to the already plated pore surfaces to fill the pores and/or project beyond the sheet surface. Solder may fill the plated pores. Polymer layers may be removed from the sheets to expose the metal in the pores. The articles are useful in making electrical connections to the contact pads of microcircuits during testing and assembly into electronic devices.

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