Metal working – Method of mechanical manufacture – Electrical device making
Patent
1997-09-18
1999-01-19
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
29825, 29852, H05K 336
Patent
active
058602119
ABSTRACT:
Disclosed is the use of a removable passivating layer in multichip packaging and CUBE applications. The process takes advantage of the fact that various metal ions will react with the carboxylic acid groups of various polyimide precursors. The polyimide will cure at a first temperature and the system may be manipulated and tested. At a later point, the polyimide is subjected to a second, higher temperature in order to decompose or completely destroy the polyimide.
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Holmes Steven John
Linde Harold George
Arbes Carl J.
Chadurjian Mark F.
International Business Machines - Corporation
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