Patent ID: 7018934
Filing Date: 2006-03-28
Classification: C23F,G03F,H01J,H01L

Abstract:
1. A method for processing a substrate, comprising: positioning the substrate on a support member in a processing chamber having a coil, wherein the substrate has a chromium layer formed on an optical quality silicon based material with a patterned resist material deposited on the chromium layer and is maintained at a temperature of about 150° C. or less; introducing a processing gas comprising (i) hydrogen chloride, (ii) an oxygen containing gas, and (iii) another chlorine containing gas into the processing chamber, wherein the hydrogen chloride and the another chlorine containing gas have a molar ratio between about 1:9 and about 9:1; delivering power to the coil to generate a plasma; applying a bias power to the support member, wherein the bias power is about 5 watts and about 50 watts; and etching exposed portions of the metal layer.