Patent ID: 7347949

Claim:
A method of manufacturing a wiring board by utilizing electro plating, said method comprising the following steps of: forming first electroless plating layers on both sides of an insulating substrate, both sides thereof being covered with metallic foils in advance; forming first electro plating layers on said first electroless plating layers by supplying an electric power from said first electroless plating layers; forming wiring patterns by removing predetermined portions of said first electro plating layers, said first electroless plating layers and said metallic foils; forming second electroless plating layers on the insulating substrate including said wiring patterns; forming a plating resist pattern so that a first predetermined portion of said wiring patterns are exposed; forming a second electro plating layer on said first predetermined portion of the wiring patterns by supplying an electric power from said second electroless plating layers; removing said plating resist pattern; removing said second electroless plating layers exposed from said second electro plating layer; and forming a solder resist pattern so that predetermined portions including said first predetermined portion of the wiring patterns are exposed.