Patent ID: 6742250
Filing Date: 2004-06-01
Classification: H05K,Y10T

Abstract:
A method for manufacturing a wiring substrate including a resin dielectric layer, a conductor layer formed in a predetermined pattern on the resin dielectric layer, and an upper resin dielectric layer formed on the resin dielectric layer and on the conductor layer, comprising:a conductor layer forming step of forming the conductor layer, through electroless copper plating and copper electroplating, on the resin dielectric layer of the substrate, the resin dielectric layer having a surface which has been surface-roughened to a predetermined roughness and to which palladium adheres; a cyan treatment step of cleaning the substrate, on which the conductor layer has been formed, with a cyanide-containing solution; and an upper resin dielectric layer forming step of forming an upper resin dielectric layer on the resin dielectric layer and the conductor layer of the cyan-treated substrate.