Patent ID: 7828944
Filing Date: 2010-11-09
Classification: C25D

Abstract:
1. An electroplating apparatus, comprising: a plating bath in which a plating solution is accommodated; a cathode holder having an engaging hole disposed penetrating through a bottom portion of the plating bath; a wafer hold disposed at an upper end of the engaging hole; a wafer holder that is detachable from the engaging hole from a lower surface side of the cathode holder and capable of moving in an up and down direction; an electrode housing recess disposed on a top surface of the wafer holder; a spring contact type cathode electrode that is fixed to the electrode housing recess and presses against a backside of a wafer placed on the wafer holder; a pad housing recess disposed on a top surface of the wafer holder; and a suction pad that is fixed to the pad housing recess and suctions the backside of the wafer placed on the wafer holder to bring the wafer into close contact with a top surface of the wafer holder.