Patent ID: 6551487
Filing Date: 2003-04-22
Classification: C25D,H01L,Y10S

Abstract:
A method of immersing a wafer into an electrolyte of an electroplating cell, the method comprising:(a) positioning the wafer above the electrolyte surface while holding the wafer in a wafer holder having a proximal end that engages the wafer; (b) directing a distal end of the wafer holder along an arced track, thereby pivoting the wafer about a pivot point, without substantially translating the wafer, to tilt the wafer at an angle such that the planar plating surface of the wafer is not substantially parallel to the plane defined by the surface of the electrolyte; (c) moving the wafer toward the electrolyte along a trajectory substantially normal to the plane defined by the surface of the electrolyte; and (d) immersing the wafer into the electrolyte while the wafer is tilted.