Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Patent
1992-02-24
1993-05-11
Picard, Leo P.
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
29837, 361400, H05K 0100
Patent
active
052103790
ABSTRACT:
A printed wiring board has an electromagnetic wave shielding layer. The printed wiring board includes a printed circuit formed on a substrate. Stratified layers of insulation are formed over the printed circuit. The insulation layers are disposed so as to form a bowl-shaped connection region. A terminal may be formed simultaneously with the forming of the electromagnetic wave shielding layer to provide a connection between the electromagnetic shielding layer and the printed circuit. The bowl-shaped connecting region provides for smoothly filling the terminal with a conductor paste without the occurrence of foaming or blurring during, for example, a silk screening printing process.
REFERENCES:
patent: 4789760 (1988-12-01), Koyama
patent: 4801489 (1989-01-01), Nakagawa
patent: 5030800 (1991-07-01), Kawakami
patent: 5043526 (1991-08-01), Nakagawa
Ichikawa Jun-ichi
Nikaido Katsutomo
Okonogi Hirotaka
Adams Bruce L.
Korka Trinidad
Nippon CMK Corp.
Picard Leo P.
Wilks Van C.
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