Method for manufacturing wiring structure, copper displacement plating solution, and wiring structure

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United States of America Patent

PATENT NO 9888585
SERIAL NO

14865143

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Abstract

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Adhesion of an underlying diffusion barrier metal film and an electroless copper plating film with respect to an insulating film can be improved. A method for manufacturing a wiring structure includes a process of forming the underlying diffusion barrier metal film 5, including a base metal with respect to copper, on the insulating film 1; and a process of forming the electroless copper plating film 6 on the underlying diffusion barrier metal film 5 by performing an electroless copper displacement plating process with a copper displacement plating solution. The copper displacement plating solution is an acidic copper displacement plating solution of pH1 to pH4, in which copper ions are contained but a reducing agent for reducing the copper ions is not contained.

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Patent Owner(s)

Patent OwnerAddress
TOKYO ELECTRON LIMITEDTOKYO
A SCHOOL CORPORATION KANSAI UNIVERSITYOSAKA JAPAN OSAKA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwashita, Mitsuaki Nirasaki, JP 90 1643
Mizutani, Nobutaka Nirasaki, JP 29 33
Ota, Kohei Suita, JP 81 521
Shinguhara, Shoso Suita, JP 2 1

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