Electricity: electrical systems and devices – Miscellaneous
Patent
1991-11-19
1992-12-22
Tolin, Gerald P.
Electricity: electrical systems and devices
Miscellaneous
174255, 361388, 361401, H05K 720
Patent
active
051738449
ABSTRACT:
A circuit board includes a copper plate and an insulating layer of photosensitive polyimide resin formed on the copper plate, the insulating layer leaving an exposed portion of a surface of the copper plate where an LSI is to be mounted. After Au plating is applied to the exposed surface of the copper plate, the LSI is mounted fixedly. A connection pattern having bonding pads is formed by copper plating on the insulating layer. The bonding pads and the LSI are connected by Au wire bonding on the Au plating applied on the bonding pads.
REFERENCES:
patent: 2923860 (1960-02-01), Miller
patent: 3417294 (1968-12-01), Steidlitz
patent: 4410927 (1983-10-01), Butt
patent: 4544989 (1985-10-01), Nakabu
patent: 4630174 (1986-12-01), Stenerson
patent: 4731700 (1988-03-01), Woodward
patent: 4737395 (1988-04-01), Mabuchi
patent: 4755417 (1988-07-01), Detoma
patent: 4796157 (1989-01-01), Ostrem
patent: 4849284 (1989-07-01), Arthur
patent: 4858073 (1989-08-01), Gregory
"Electronic Materials", Japan Digest, Oct. 1986, pp. 72-77.
ELECTRONIC MATERIALS: "Double-Sided Printed Circuit Board With Plated Through-Holes", by Takeshi Kano and Muhahiko Fukushima, Oct. 1986, pp. 72-77.
Adachi Kohei
Endo Atsushi
Gofuku Eishi
Takada Mitsuyuki
Takasago Hayato
Mitsubishi Denki & Kabushiki Kaisha
Tolin Gerald P.
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