Patent ID: 9653350
Date: 2017-05-16
CPC Classifications: B05D,C23C,H01L

Claim:
1. A pre-treatment method for plating, the pre-treatment method comprising: a silane coupling process of forming a silane-based coupling layer on an inner surface of a recess included in a substrate; a titanium coupling process of forming a titanium-based coupling layer on a region in the vicinity of an opening edge of the recess included in the substrate; a catalytic particle-containing film forming process of forming a catalytic particle-containing film on a surface of the substrate by supplying, onto the substrate, a catalytic particle solution which is prepared by dispersing catalytic metal nanoparticles and a dispersing agent in a solvent containing water; a first heating process of removing moisture contained at least in the catalytic particle-containing film by heating the substrate to a first temperature; and a second heating process of polymerizing the dispersing agent to have a sheet shape by heating the substrate to a second temperature higher than the first temperature after the first heating process and fixing the catalytic metal nanoparticles on the silane-based coupling layer and the titanium-based coupling layer by covering the catalytic metal nanoparticles with the sheet-shaped dispersing agent.