Personal data card and method of constructing the same

Details Personal data card and method of constructing the same Personal data card and method of constructing the same

1988-02-29

1990-05-01

Trafton, David L.

Registers

Records

Conductive

235488, G06K 1906

Patent

active

049211609

ABSTRACT:
A personal data card (10), comprised of a semiconductor chip (28), sealed by encapsulant (38) in an opening (26) in a body (12), is advantageously provided with a shock absorbing device (38) which substantially circumscribes the encapsulant to substantially isolate the encapsulant from the body of the card. By isolating the encapsulant from the card body, the shock absorbing device reduces the stresses transmitted from the card body into the capsulant and into the chip when the card is flexed. In this way the incidence of cracking of the chip caused by the stresses generated upon flexing of the card is reduced.

REFERENCES:
patent: 3637994 (1972-01-01), Ellingboe
patent: 4222516 (1980-09-01), Badet et al.
patent: 4417413 (1983-11-01), Hoppe et al.
patent: 4603249 (1986-07-01), Hoppe et al.
patent: 4649418 (1987-03-01), Uden
patent: 4692604 (1987-09-01), Billings
patent: 4737620 (1988-04-01), Mollet et al.
patent: 4746392 (1988-05-01), Hoppe
patent: 4764803 (1988-08-01), Ueda
patent: 4843225 (1989-06-01), Hoppe
patent: 4849617 (1989-07-01), Ueda

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