Patent ID: 8647445
Filing Date: 2014-02-11
Classification: B24B,H01L

Abstract:
1. A two-step process for cleaning a semiconductor device or tooling during manufacture thereof, the process comprising: a first step of contacting the semiconductor device or tooling with a first aqueous solution consisting essentially of at least one antioxidant compound for a period of time and at a temperature effective to form the insoluble adduct with a residue from the semiconductor device or tooling, wherein the first aqueous solution forms the insoluble adduct of the residue and the at least one antioxidant compound; and a second step of contacting the insoluble adduct with a second aqueous solution consisting essentially of at least one base for a period of time and at a temperature effective to solubilize and remove the adduct, thereby cleaning the semiconductor device or tooling, wherein the first and second aqueous solutions are different.