Patent ID: 6527963
Filing Date: 2003-03-04
Classification: H05K

Abstract:
A method of manufacturing a multilayer wiring board comprising steps of (i) forming a column-like metallic body on a patterned lower wiring layer, and (ii) forming an upper wiring layer whose part is conductively connected with said column-like metallic body, wherein step (i) comprises:(a) coating said patterned lower wiring layer with a conductor showing durability during a subsequent step (d) of etching metal composing said column-like metallic body, thereby forming a conductive layer; (b) forming a plating layer of the metal composing said column-like metallic body on a whole surface including said conducive layer; (c) forming a mask layer on a surface portion of said plating layer where said column-like metallic body is formed; and (d) etching said plating layer.