PRODUCTION OF METAL WIRING

摘要

PROBLEM TO BE SOLVED: To provide a method of producing an electric wiring capable of low- cost production and easily applicable to a large-sized substrate without using a vacuum film-forming device. SOLUTION: A photosensitive underlying resin film 2 is formed on an insulating substrate 1 by a coating method. Exposure and development onto the underlying resin film 2 are performed to obtain an underlying resin film 2a patterned into a wiring form. A low-resistance metal 3 of Cu is subjected to film formation on the patterned underlying resin film 2a with electroless selective plating.