摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer printed circuit substrate which can form a highly fine pattern, which can be formed in a simple step and which does not have a problem of a waste liquid treatment. SOLUTION: The multilayer printed circuit substrate includes at least two laminated wiring boards each having a characteristic change layer containing at least a photocatalyst and changing in characteristics by an operation of the photocatalyst and a conductive pattern formed along the pattern changed in the characteristics of the changing layer. COPYRIGHT: (C)2004,JPO
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