Patent ID: 7967996
Filing Date: 2011-06-28
Classification: B08B,H01J,H01L

Abstract:
1. A process for removing polymer from a backside of a workplace comprising: supporting said workpiece on the backside in a vacuum chamber while exposing a peripheral annular portion of the backside; providing a localized plasma source adjacent a sidewall of the chamber and having an output port contained in said side wall and open to the interior of said chamber; confining the front side of said workpiece by holding said workplace in a first position in said chamber above the level of the top of said output port of said localized plasma source removing polymer from the backside of said workpiece, said removing comprising generating a plasma containing polymer etch species in the localized, plasma source, and flowing, drifting or diffusing first plasma by-products through said output port; and placing said workpiece in a second position below the level of the bottom of said output port of said localized plasma source; and stripping photoresist from a front side of the workplace, said stripping comprising generating a plasma containing photoresist removal species in said localized plasma source, and flowing, drifting or diffusing second plasma by-products from said localized plasma source through said output port.