Personal data card fabricated from a polymer thick-film circuit

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electrical power distribution systems and devices

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29846, 29850, 235488, 174257, 428901, H05K 111

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active

052725960

ABSTRACT:
A personal data card (10) is fabricated from a polymer thick-film circuit (12) formed of a polymer sheet (14) having a plurality of pads (16 and 17) and interconnecting paths (18) printed thereon with a copper-filled polymer ink. Each of a selected set of the pads (16) has a layer of nickel (22) applied to it, and then a layer of gold (24) applied above the nickel, to facilitate wire bonding of each of a plurality of aluminum leads (21), associated with a semiconductor die (19), to a corresponding pad. Use of such a polymer thick-film circuit (12) in the fabrication of the data card (10) reduces the cost of the card.

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B. Jones, "Polymer Thick Film Technology Review," Sales Brochure, TACL Mfg., McLean, Va. 22101, 1991.
K. Gilleo, "The Polymer Electronics Revolution," presented at NEPCON West '92, Proceedings of the Technical Program--National Electronic Packaging and Production Conference, vol. 3, pp. 1390-1401, 1992.
K. Gilleo, "PTF, SMT and FLEX, a Winning Combination, presented at NEPCON West '87, Proceedings of the Technical Program"--National Electronic Packaging and Production Conference, vol. 1, pp. 223-229, 1987.

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