Patent ID: 7098132
Filing Date: 2006-08-29
Classification: H05K,Y10T

Abstract:
1. A method of manufacturing a flexible wiring board, with a substrate, wherein the wiring board comprises a reference conductive layer; a first base film provided on said reference conductive layer; and a first surface conductive layer provided on said first base film, the method comprising: forming a first hole penetrating said first surface conductive layer and said first base film so that said reference conductive layer is exposed on its bottom and said first base film is exposed on an inner peripheral side face; depositing, by electroless plating, a first electroless plating layer on at least a surface of said first base film exposed on the inner peripheral side face of said first hole; growing, by electrolytic plating, a first electrolytic plating layer on a surface of said first electroless plating layer so as to fill said first hole with said first electrolytic plating layer and then providing said electroless plating layer and said electrolytic plating layer on said first surface conductive layer to form a first surface coating layer; etching said first electrolytic plating layer so as to reduce a thickness of said first surface coating layer on said first base film; and forming a patterned resist film on a surface of said first surface coating layer having a reduced thickness and then removing said first surface coating layer situated on a bottom of an opening of said resist film so as to pattern said first surface coating layer.