Patent ID: 6290833
Filing Date: 2001-09-18
Classification: C23C,C25D,H01L,H05K

Abstract:
A process for applying a metal structure to a workpiece comprising:providing a first electroplating bath including copper sulfate as a source of metal ions as a principal metal species to be deposited during subsequent electroplating, ammonium sulfate, a complexing agent, and ethylene glycol;providing a workpiece on which one or more microelectronic devices are to be formed;exposing at least one surface of the workpiece to the first electroplating bath;providing electroplating power between the at least one surface of the workpiece and an anode disposed in electrical contact with the first electroplating bath to electroplate copper onto the at least one surface of the workpiece in an electrolytic first deposition process; anddepositing additional copper onto the copper deposited in the first deposition process using a second deposition process that is different than the first electrolytic deposition process.