Patent ID: 6716332
Filing Date: 2004-04-06
Classification: C23C,C25D,H05K

Abstract:
A method for plating a metal in fine channels formed in a surface of a substrate or in opening portions in a resist formed on a surface of a substrate, comprising:using a retainer to hold a substrate having fine channels formed in a surface of said substrate or having opening portions in a resist formed on the surface of said substrate; using a deaerating device to deaerate dissolved gas in a preprocessing solution so as to provide a deaerated preprocessing solution; supplying said deaerated preprocessing solution from said deaerating device to a preprocessing bath; contacting said surface of said substrate, or said resist formed on said surface of said substrate, held by said retainer with said deaerated preprocessing solution in said preprocessing bath so as to absorb air bubbles in said fine channels or in said opening portions into said deaerated preprocessing solution; and then contacting said surface of said substrate, or said resist formed on said surface of said substrate, while said substrate is held by said retainer with a plating solution for plating metal into said fine channels or into said opening portions.