Patent ID: 7479213

Claim:
A method of embedding an interconnect material in an interconnect recess formed in a surface of a substrate by electroplating, comprising: performing a first plating process on the surface of the substrate, including: (i) filling a plating solution between an anode and the surface of the substrate which is disposed so as to face the anode, and (ii) passing a current between the anode and the surface of the substrate to form an initially-plated surface of the substrate; and then performing a second plating process on the initially-plated surface of the substrate, including: (i) filling a plating solution between the anode and the initially-plated surface of the substrate which is disposed so as to face the anode, with a porous member placed in the plating solution, (ii) repeatedly bringing the porous member and the initially-plated surface of the substrate into and out of contact with each other, and (iii) passing a current between the anode and the initially-plated surface of the substrate only when the porous member is being held in contact with the initially-plated surface of the substrate so as to form a plated surface of the substrate.