COPPER FOIL SHEET FOR OPENING LASER-DRILLED HOLE

摘要

PROBLEM TO BE SOLVED: To provide a copper foil sheet for opening a laser-drilled hole, which has excellent charcteristics for opening of the laser-drilled hole by using low laser light energy that a printed wiring board is not damaged and which enables the production of highly integrated printed wiring boards necessary for small sized and lightweight electric apparatuses.;SOLUTION: The copper foil sheet for opening the laser-drilled hole is obtained by: forming an alloy minute roughening particle layer consisting of Cu, Ni and Co on the surface of the copper foil sheet to be irradiated with laser light; forming a flat and smooth cover plated layer consisting of Co or Ni on the alloy minute roughening particle layer; sticking another alloy minute roughening particle layer consisting of Cu and Co or Cu, Ni and Co to the surface of the copper foil sheet to be stuck to a resin; and treating the surface of the alloy minute roughening particle layer-stuck copper foil sheet to be stuck to the resin with a silane coupling agent.;COPYRIGHT: (C)2010,JPO&INPIT