SURFACE-TREATED COPPER FOIL

摘要

PROBLEM TO BE SOLVED: To provide a copper foil having improved peel strength as a copper foil for a flexible printed board (FPC) having the copper foil laminated on a liquid crystal polymer (LCP) suitable for high-frequency use.SOLUTION: There is provided a surface-treated copper foil characterized in that the coating weight of Si on a copper foil surface is 3.1-300 μg/dmand the sticking weight of N on the copper foil surface is 2.5-690 μg/dm.