Patent ID: 9023227
Filing Date: 2015-05-05
Classification: H01L

Abstract:
1. A method of etching a substrate in a chamber comprising: (A) depositing a protective layer on a first layer disposed on a substrate in an etch reactor, wherein a plasma source power of 4,500 Watts or greater is applied while depositing the protective layer; (B) etching the protective layer in the etch reactor, wherein the plasma source power of 4,500 Watts or greater is applied while etching the protective layer; and (C) etching the first layer in the etch reactor, wherein the plasma source power of 4,500 Watts or greater is applied while etching the first layer, wherein a time for the depositing the polymeric layer (A) comprises less than 30% of a total cycle time for the depositing the polymeric layer (A), the etching the protective layer (B), and the etching the first layer (C).