Electromagnetic wave shielding circuit and production method the

Details Electromagnetic wave shielding circuit and production method the Electromagnetic wave shielding circuit and production method the

1989-02-21

1990-11-13

Nimmo, Morris H.

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

427 96, 427 98, H05K 100

Patent

active

049703544

ABSTRACT:
An electromagnetic wave shielding circuit and the production method thereof is described, wherein the circuit comprises a base board, an electric circuit formed on the base board, an electrically isolating coating coated over the electric circuit, a layer of coating having copper particles contained therein coated over the electrically isolating coating and hardened by heating, a copper plating layer attached to the surface of the copper particle containing coating for discharging out of the electric circuit an electromagnetic wave current which may be produced in the electric circuit, said copper particle containing coating having contained therein 100% by weight of copper particles and 12%-25% by weight of epoxy resin for a binder.

REFERENCES:
patent: 4072771 (1978-02-01), Grier, Sr.
patent: 4248921 (1981-02-01), Steigerwald et al.
patent: 4684550 (1987-08-01), Milius et al.
patent: 4734156 (1988-03-01), Iwasa
patent: 4801489 (1989-01-01), Nakagawa et al.

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