| abstract |
A surface-treated copper foil, wherein, on at least one surface of the copper foil, a roughening treatment layer, an anti-rust treatment layer, and a silane coupling layer are sequentially stacked on the basis of the copper foil, as a result of the silane coupling layer Among the complex parameters of the three-dimensional surface texture measured on the surface of the surface, the value of the developed area ratio Sdr of the interface is in the range of 8% to 140%. |