Patent ID: 7842451
Filing Date: 2010-11-30
Classification: G03F,H01L

Abstract:
1. A method of forming a pattern, the method comprising: forming a first organic polymer layer on a substrate on which an underlying layer is formed, the first organic polymer layer serving as an anti-reflection coating layer; forming a second photosensitive organic polymer pattern on the first organic polymer layer while exposing a portion of the first organic polymer layer; forming a silicon-containing polymer layer on the exposed portion of first organic polymer and at least a portion of the sidewall surface of the second photosensitive organic polymer pattern; oxidizing the silicon-containing polymer layer and simultaneously anisotropic-ashing the second photosensitive organic polymer pattern and the first organic polymer layer by an oxygen plasma; and etching the underlying layer by using an etching mask of the silicon-containing polymer layer and the first organic polymer layer.