Method for manufacturing multilayer printed wiring board

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United States of America Patent

PATENT NO 11452216
APP PUB NO 20210161020A1
SERIAL NO

16632790

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A first stack is formed by stacking a first sheet of metal foil, a first prepreg, and a second sheet of metal foil, one on top of another. The first prepreg is thermally cured by thermally pressing these members to make a double-sided metal-clad laminate. Conductor wiring is formed by partially removing the first sheet of metal foil from the double-sided metal-clad laminate to make a printed wiring board. After a third sheet of metal foil has been preheated, the conductor wiring of the printed wiring board, a second prepreg, and the third sheet of metal foil are stacked one on top of another and thermally pressed together. The first insulating layer has a lower linear expansion coefficient than any of the first sheet of metal foil or the second sheet of metal foil does.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD1-61 SHIROMI 2-CHOME CHUO-KU OSAKA-SHI OSAKA 5406207 ?5406207

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikawa, Yohsuke Fukushima, JP 7 19
Kishino, Koji Mie, JP 16 188
Matsumura, Kazuki Mie, JP 14 37

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