Multifunctional card having an electromagnetic wave protection

Details Multifunctional card having an electromagnetic wave protection Multifunctional card having an electromagnetic wave protection

1989-12-07

1991-04-02

Thompson, Gregory D.

Electricity: electrical systems and devices

Miscellaneous

174 35R, 174 35C, 174 51, 439607, 439610, H05K 900

Patent

active

050051067

ABSTRACT:
A multifunctional card includes a substrate having a semiconductor circuit, and a housing, made of an insulating material, for housing the substrate. The housing comprises two pieces of housing halves to be fitted to contain the substrate therein. In the housing, a sheet-like member constituted by metal and insulating layers put on one another is positioned between the substrate and the housing to cover at least central portion of the substrate with the insulating layer inside. The metal layer is electrically connected to ground portions of the substrate, the ground portions of the substrate being formed so as to contact with a ground portion of a main apparatus.

REFERENCES:
patent: H526 (1988-09-01), Miller
patent: 4593736 (1986-06-01), Morita
patent: 4609104 (1986-09-01), Kasper et al.
patent: 4647714 (1987-03-01), Goto
patent: 4872091 (1989-10-01), Maniwa et al.

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