Metal working – Method of mechanical manufacture – Electrical device making
Patent
1985-11-26
1987-07-14
Goldberg, Howard N.
Metal working
Method of mechanical manufacture
Electrical device making
29840, 156 89, H01K 322
Patent
active
046793208
ABSTRACT:
A process for producing a multilayer ceramic circuit board with copper including the steps of:
forming green sheets by doctoring a slurry which includes 100 parts by weight of glass ceramic particles, 5 to 20 parts by weight of a thermally depolymerizable resin binder, 2 to 10 parts by weight of a plasticizer, and up to 2 parts by weight of a fatty acid ethylene oxide adduct type, deflorculant. The glass ceramic includes 20 to 70% by weight of alumina, and 30 to 80% by weight of SiO.sub.2 -B.sub.2 O.sub.3 glass. The process further includes the steps of forming via holes through the green sheets, screen-printing a copper paste on the green sheets, and laminating the green sheets, thereby forming a multilayer structure and firing the multilayer structure in a non-oxidizable atmosphere.
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Imanaka Yoshihiko
Kamehara Nobuo
Kurihara Kazuaki
Ogawa Hiromi
Tsukada Mineharu
Arbes Carl J.
Fujitsu Limited
Goldberg Howard N.
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