RESIDUE-REMOVING LIQUID AND METHOD FOR PRODUCING PRINTED CIRCUIT BOARD USING THE LIQUID

摘要

PROBLEM TO BE SOLVED: To solve the problem of the short-circuit of a conductor circuit or the narrowing of the gap between adjacent conductor circuits caused by the residual seed layer of a prescribed region in the etching of the seed layer holding a residue on the copper layer of the seed layer after the resist peeling treatment. SOLUTION: The residue-removing liquid is effective for removing the residue left after the peeling of the resist containing a photo-reaction initiator and formed on a circuit board with an alkaline resist-peeling liquid. The removing liquid contains an organic acid and a nitrogen-containing compound.