Patent ID: 8329584
Filing Date: 2012-12-11
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: preparing a wafer comprising a semiconductor substrate, an insulating layer over the semiconductor substrate, the insulating layer having a trench formed therein, and a copper-containing metal layer filled inside said trench; and cleaning a surface of said copper-containing metal layer and of said insulating layer; wherein said cleaning said surface of said copper-containing metal layer and of said insulating layer includes: a first process including removing copper ion and copper oxide; a second process including reducing, after said first process, said copper ion and said copper oxide remaining unremoved through said first process, thereby giving copper; a third process including enclosing with an organic layer, after said second process, said copper given through said second process; and a fourth process including giving a negative surface potential to said organic layer and to said insulating layer, after said third process.