Patent ID: 6156668
Filing Date: 2000-12-05
Classification: G03F

Abstract:
A method for forming a fine pattern in a semiconductor device, comprising the steps of:(a) providing a semiconductor substrate;(b) sequentially forming an etched layer and a photosensitive film for silylation on the semiconductor substrate;(c) selectively exposing the photosensitive film by using a light-exposure mask;(d) selectively forming a silylation region by performing a silylation on the surface of the photosensitive film;(e) partially etching the surface of the photosensitive film with a fluorine-based gas or a mixed gas of fluorine/oxygen, and removing a silylated portion on a portion determined as a non-pattern area during the silylation process in order to prevent an irregular breaking of a silylation region edge portion;(f) etching a photosensitive film of the non-pattern area with oxygen plasma using the silylation region of a light-exposure area as an etching boundary to form a photosensitive film pattern;(g) etching a photosensitive film residue left on the photosensitive film pattern using a fluorine-based gas or a mixed gas of fluorine/oxygen; and(h) etching the etched layer using the photosensitive film pattern as a mask to form a pattern of the etched layer.