Patent ID: 7553400
Filing Date: 2009-06-30
Classification: C25D,H01L

Abstract:
1. A plating method comprising: (a) disposing a substrate having fine interconnect recesses such that a conductive layer formed on a surface of the substrate faces an anode; (b) disposing a porous member between the substrate and the anode; (c) filling a plating solution containing metal ions, a supporting electrolyte, halogen ions, and at least one of an organic sulfur compound, a high polymer compound, and an organic nitrogen compound between the substrate and the anode; (d) holding the conductive layer and the porous member in contact with each other and moving the porous member and the substrate, which has the conductive layer formed thereon, relative to each other for a predetermined time without passing an electric current between the conductive layer and the anode so that the conductive layer is in intimate contact with the porous member for a predetermined time, and stopping the movement of the substrate with respect to the porous member; (e) passing an electric current between the conductive layer and the anode for predetermined time, and stopping said passing of the electric current between the conductive layer and the anode after said stopping the movement of the substrate with respect to the porous member; (f) releasing the porous member from the surface of the substrate, thereby embedding metal in the fine interconnect recesses after said stopping said passing of the electric current between the conductive layer and the anode; and (g) repeating (d) through (f).