Patent ID: 6534117
Filing Date: 2003-03-18
Classification: C23C,H05K

Abstract:
A method of electroless plating a surface of an activated product, comprising using an electroless plating solution for electroless plating said surface of said activated product, said electroless plating solution containing a copper salt, a chelating agent, a reducing agent, and a salt of a metal that is gold, nickel, palladium, cobalt or platinum added to the electroless plating solution as a plating accelerator in an amount of 1 mol % or less based on the copper salt in the composition of the electroless plating solution, wherein using an electroless plating solution for electroless plating said surface of said activated product comprises:precipitating said metal on said surface of said activated product using said electroless plating solution; and precipitating copper on said metal precipitated on said surface of said activated product using said electroless plating solution, wherein holes having high aspect ratios on said surface of said activated product and the insides of said holes are also plated uniformly and at least one of said holes has a diameter of 0.3 &mgr;m or less.