Patent ID: 7662723
Filing Date: 2010-02-16
Classification: H01J,H01L

Abstract:
1. A method for processing a substrate, the substrate including a barrier layer and a deposited photoresist element, the method comprising: supplying and ionizing a first set of gases to partially etch the deposited photoresist element at a first portion of the substrate in a plasma processing chamber to result in a remaining portion of the deposited photoresist element; supplying and ionizing a second set of gases to partially etch the deposited photoresist element at a second portion of the substrate in the plasma processing chamber to remove the remaining portion of the deposited photoresist element; and removing the barrier layer in the plasma processing chamber, wherein the first portion of the substrate represents a center zone of the substrate, the second portion of the substrate represent an edge zone of the substrate, the first set of gases and the second set of gases have the same composition, and the first set of gases and the second set of gases have different flow rates.