Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1982-09-08
1983-07-19
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156655, 156668, 156904, 427 90, B44C 122, C03C 1500, C03C 2506, B29C 1708
Patent
active
043942113
ABSTRACT:
In order to selectively reduce the etching rate of the polyimide resin layer, ion implantation is carried out thereto. Preferably, the impurity ion such as As.sup.+, P.sup.+, B.sup.+, BF.sub.2.sup.+ is implanted with dosage of 1.times.10.sup.14 cm.sup.-2 or more. As a result, the polyimide resin layer has a resistivity to etching by the etchant containing hydrazine. This method can be used for preventing generation of unwanted etching in the process of forming the via hole in case of using the polyimide resin as the interlayer insulator for multiwiring structure.
REFERENCES:
patent: 4068018 (1978-01-01), Hashimoto et al.
Shingu Masataka
Tsukada Saburo
Uchiyama Nobuhiro
Fujitsu Limited
Powell William A.
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