Patent ID: 9067460
Filing Date: 2015-06-30
Classification: B41J,B44C,H01L

Abstract:
1. A dry etching method comprising patterning a resin film provided on a substrate, by reactive ion etching using a resist mask, wherein a gas mixture containing CF wherein a pressure in an etching reaction chamber in an apparatus used for the reactive ion etching is 1.0 Pa or more, wherein the reactive ion etching includes a first stage in which 5% to 95% of a thickness of the resin film is removed beginning with a start of etching, and a second stage in which etching is performed after the first stage, wherein high-frequency antenna power in the second stage is higher than high-frequency antenna power in the first stage, and wherein high-frequency bias power in the first stage is 450 W to 1050 W and high-frequency bias power in the second stage is 30 W to 70 W.