BASE MATERIAL FOR PRINTED CIRCUIT BOARD AND PRINTED CIRCUIT BOARD
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United States of America
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Apr 24, 2019
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Apr 24, 2019
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Abstract
The base material for printed circuit board according to one aspect of the present disclosure is a base material for printed circuit board comprising a base film having an insulating property, a sintering layer inducing a plurality of copper particles and formed on at least one surface of the base film and an electroless copper plating layer formed on a surface of the sintering layer, the surface being on an opposite side to the base film, and filled in the sintering layer, and wherein a lightness L* of a surface of the electroless copper plating layer, the surface being on an opposite side to the sintering layer, is 45.0 or more and 85.0 or less, a chromaticity a* thereof is 5.0 or more and 25.0 or less, and a chromaticity b* thereof is 5.0 or more and 25.0 or less.
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