Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electrical power distribution systems and devices
Patent
1991-06-24
1993-12-21
Echols, P. W.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electrical power distribution systems and devices
29846, 29850, 235488, 174257, 428901, H05K 111
Patent
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.
REFERENCES:
patent: 3637994 (1972-01-01), Ellingboe
patent: 4222516 (1980-09-01), Badet et al.
patent: 4417413 (1988-11-01), Hoppe et al.
patent: 4603249 (1986-07-01), Hoppe et al.
patent: 4649418 (1987-03-01), Uden
patent: 4692604 (1987-09-01), Billings
patent: 4746392 (1988-05-01), Hoppe
patent: 4764803 (1988-08-01), Ueda
patent: 4849617 (1989-07-01), Ueda
patent: 4921160 (1990-05-01), Flynn et al.
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.
Honore Jack P.
Verdi Fred W.
AT&T Bell Laboratories
Echols P. W.
Levy Robert B.
LandOfFree
Personal data card fabricated from a polymer thick-film circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Personal data card fabricated from a polymer thick-film circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Personal data card fabricated from a polymer thick-film circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-312763