Patent ID: 7458149

Claim:
A method of manufacturing a printed circuit board, comprising: forming a conductive layer, which is to be used as a plating power supplying layer, on a substrate; forming a first mask pattern for forming a predetermined wiring pattern on a surface of the conductive layer, carrying out electroplating with the conductive layer as the plating power supplying layer to form a conductive part on the conductive layer, and then removing the first mask pattern; forming a second mask pattern that exposes required parts of the conductive part on the substrate, on which the conductive part has been formed on the conductive layer, carrying out electroplating with the conductive layer as the plating power supplying layer to form protective plating on all exposed parts of the conductive part, and then removing the second mask pattern; and forming a wiring pattern on the substrate by removing parts of the conductive layer exposed on the substrate, and covering the wiring pattern formed on the substrate, aside from parts on which the protective plating has been formed, with a protective film, and the forming the second mask pattern comprises forming the second mask pattern so as to expose the required parts of the conductive part, the second mask pattern is formed so as to expose an upper surface and side surfaces of the conductive part, parts of the conductive layer exposed on the substrate are then removed, and the protective plating is formed on all outer surfaces of the conductive part and the conductive layer that forms a base of the conductive part by electroplating with the conductive layer as the plating power supplying layer.