Patent ID: 8784638

Claim:
A method of manufacturing a wiring board, wherein the wiring board comprises: a resin board treated with an ozone solution, the resin board comprising a mixture of a plurality of types of resins, the mixture containing an aromatic cyanate compound and an aromatic epoxy resin, a resin-metal composite layer which is formed integrally on a surface of the resin board and in which fine metal particles are uniformly dispersed in a resin matrix; and a wiring portion that comprises a plating film formed in a predetermined pattern on the resin-metal composite layer, wherein the resin-metal composite layer has a thickness of 10 to 200 nm and the wiring portion includes a fine wiring pattern having L/S =10/10 μm or less, the method comprising: an ozone treatment step of treating the resin board with the ozone solution so as to form a reformed layer having polar groups on a surface thereof; an adsorption step of bringing the reformed layer into contact with a metal compound solution so that at least one of colloidal particles and ions of a catalyst metal are attached to the polar groups and fine particles of the catalyst metal are dispersed in the reformed layer, thereby forming the resin-metal composite layer; and a plating step of performing a plating process on the resin-metal composite layer so as to form the wiring portion; a heat treating step of heating the resin board; and an etching step of removing an unnecessary portion of the resin-metal composite layer other than the wiring portion, wherein the ozone treatment step, the adsorption step and the plating step, the heat treatment step, and the etching step are carried out in the order of description.