公开(公告)号：US20180005881A1

公开(公告)日：2018-01-04

申请号：US15200836

申请日：2016-07-01

Applicant: APPLIED MATERIALS, INC.

Inventor： Prayudi LIANTO ,  Sam LEE ,  Charles SHARBONO ,  Marvin Louis BERNT ,  Guan Huei SEE ,  Arvind SUNDARRAJAN

IPC: H01L21/768 ,  H01L23/522 ,  H01L23/532

CPC classification number: H01L21/76879 ,  H01L21/76804 ,  H01L21/76873 ,  H01L23/5226 ,  H01L23/53228 ,  H01L23/53238 ,  H01L23/5329

Abstract: A method of processing a semiconductor substrate includes: immersing a substrate in a first bath, wherein the substrate comprises a barrier layer, a conductive seed layer, and a patterned photoresist layer defining an opening; providing a first electric current between the conductive seed layer and a first anode disposed in electrical contact with the first bath to deposit a conductive material within the opening; stripping the patterned photoresist layer; immersing the substrate in a second bath; providing a second electric current that is a reverse of the first electric current between the conductive seed layer plus the conductive material and a second anode disposed in electrical contact with the second bath; etching the conductive seed layer from atop a field region of the barrier layer; and etching the barrier layer from atop a field region of the substrate.