Patent ID: 6560863
Filing Date: 2003-05-13
Classification: H05K,Y10T

Abstract:
A method of producing a wiring board having a substrate and having a plurality of wiring conductor layers, each said conductor layer being located on an electrical insulation layer, wherein each said insulation layer has a small surface roughness and the adhesion between and insulation layer and a conductor layer is improved, comprising the steps of:forming a plurality of electrical insulation layers successively on said substrate using a resin material to form each said insulation layer; forming a conductor layer on the surface of each said electrical insulation layer, wherein each conductive layer is formed by successive steps of first electroless plating copper on a said electrical insulation layer and then subsequently electroplating with copper on said electroless plated copper; and thereafter patterning said plating to form a wiring layer; wherein, after the formation of each electrical insulation layer on the substrate, the electrical insulation layer is subjected first to a plasma treatment, and then to a subsequent ultraviolet treatment, prior to said step of electroless plating copper and said subsequent electroplating with copper.