Patent ID: 8029653
Filing Date: 2011-10-04
Classification: C25D,H01L

Abstract:
1. An electroplating apparatus comprising: a substrate holder for holding a substrate; a sealing member for contacting a peripheral portion of a surface of a substrate, held by the substrate holder, to seal the peripheral portion; a cathode contact for contacting a conductive layer formed in the surface of the substrate; held by the substrate holder; to feed electricity to the conductive layer; a housing having therein an anode to be immersed in a plating solution, and a porous structure disposed at an open end facing the substrate held by the substrate holder, said porous structure defining a plating chamber in the housing; a partition plate for dividing the plating chamber into a plurality of rooms; and a sealing ring interposed between the porous structure and the partition plate to seal a gap between the porous structure and the partition plate; wherein the plating chamber is divided into rooms by the partition plate and the porous structure, and the anode is comprised of a plurality of divided anodes, each divided anode being disposed in a respective one of the rooms of the plating chamber so that each divided anode can pass an independent plating current.