Uniaxially electrically conductive articles with porous...

Details Uniaxially electrically conductive articles with porous... Uniaxially electrically conductive articles with porous...

H - Electricity

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H01B 5/16 (2006.01) H01B 1/22 (2006.01) H01L 21/66 (2006.01) H01L 23/498 (2006.01) H01R 9/00 (2006.01) H01R 13/24 (2006.01)

Patent

CA 1284523

ABSTRACT Low tortuosity porous polymer sheets (25 to 2000 pores per square millimetre) 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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