Patent ID: 6649038
Filing Date: 2003-11-18
Classification: C25D,H01L,H05K

Abstract:
A method for depositing copper on a substrate comprising the steps of: a) providing the substrate having apertures, the substrate rotating at a speed of about 0 to 10 rpm; b) electroplating copper on the rotating substrate with an electroplating solution comprising a soluble copper salt and an electrolyte for a period of time sufficient to deposit the copper into the apertures, the electroplating solution having a flow rate of about 0 to 1 gpm; c) then increasing the rotation of the rotating substrate to about 20 rpm or greater and increasing the flow rate of the electroplating solution to about 2 gpm or greater; and d) electroplating copper on the rotating substrate with the electroplating solution for a period of time sufficient to deposit a desired thickness of the copper.