Method for making ceramic substrates from thin and thick ceramic

Details Method for making ceramic substrates from thin and thick ceramic Method for making ceramic substrates from thin and thick ceramic

1994-11-01

1997-02-11

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156252, 264 61, 29851, 174255, B32B 3112, B32B 3126

Patent

active

056016727

ABSTRACT:
Method for producing ceramic laminates from a plurality of greensheet layers which include one or more thin greensheet layers, e.g. having a thickness less than about 3 mils, with interposed patterned circuit layers and conductive vias, while avoiding the loss of strength and the distortion encountered when paste compositions are pre-applied to such thin greensheet layers. The invention avoids the aforementioned problems by the use of a plurality of greensheet layers including thicker, paste-resistant greensheet layers having a thickness greater than the thin greensheet layer, e.g., between 5 and 10 mils, each pair of the thicker greensheet layers confining therebetween an unscreened thin greensheet layer, one of the thicker greensheet layers also being screened with the circuit pattern layer normally applied to the interposed thin greensheet layer. Thereafter the superposed layers are laminated and sintered to form the composite.

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Lussow, R. O., "Internal capacitors and resistors for multilayer ceramic modules," IBM Technical Disclosure Bulletin, vol. 20, No. 9 Feb. 1978.
Utsumi, Kazuaki, "Multilayer ceramic films," Hyomen Gijutsu, 40(10), 1989, 1075-80, (Abstract Only).

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