Patent ID: 7445881
Filing Date: 2008-11-04
Classification: C08F,H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising: forming a layer of a photosensitive etching resistance material on a substrate made of semiconductor or quartz glass, the photosensitive etching resistance material comprising an acid etching resistance material composed of a resin having at least two kinds of repeating units represented by the following general formula (PS1); and a photo acid generator which is capable of generating an acid as it is irradiated with light: wherein in the general formula (PS1), R subjecting the substrate to patterning exposure; heating the substrate; subjecting the substrate to a developing treatment using an alkaline developing solution to remove an exposed portion of the layer; and subjecting the substrate to a fluoric acid etching treatment using a solution containing fluoric acid at a concentration ranging from 30% to 50%.