Patent ID: 8969215
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, comprising: forming an etch-target layer and a first mask layer on a substrate; forming a second mask pattern on the first mask layer, wherein the second mask pattern includes a second line portion, a second pad portion, and a second connecting portion and wherein the second connecting portion is positioned between the second line portion and the second pad portion; forming a first spacer to cover a sidewall of the second mask pattern; removing the second line portion and the second connecting portion; etching the first mask layer to form a first mask pattern, wherein the first mask pattern includes a first line portion, a first connecting portion, and a first preliminary pad portion and wherein the first line portion, the first connecting portion and the first preliminary pad portion have shapes substantially corresponding to shapes of portions of the first spacer covering the second line portion, the second connecting portion, and the second pad portion, respectively, in plan view; partially removing end portions of the first line portion and the first preliminary pad portion to form a pair of first pad portions spaced apart from each other; forming a second spacer to cover a sidewall of the first mask pattern; removing the first line portion and the first connecting portion; and etching the etch-target layer using the first pad portion and the second spacer as an etch mask, wherein a width of the first spacer is substantially equivalent to that of the second spacer.