Patent ID: 7709356

Claim:
A method of forming a pattern, the method comprising: forming a sacrificial layer pattern and a stop layer pattern for reducing an epitaxial growth on a substrate, wherein the sacrificial layer pattern includes a first hole therethrough, and wherein the first hole partially exposes a first top surface portion of the substrate; forming a first active layer on a bottom and a sidewall of the first hole by performing a first SEG process on the first top surface portion of the substrate and a sidewall of the sacrificial layer pattern, wherein a second hole is formed within the first hole while the SEG process is performed and has a width smaller than that of the first hole; forming an insulation layer pattern to sufficiently fill the second hole; forming a third hole by removing the sacrificial layer pattern and the stop layer pattern for reducing the epitaxial growth; and forming a second active layer on a bottom and a sidewall of the third hole by performing a second SEG process on a second top surface portion of the substrate and a sidewall of the first active layer to form at least one active pattern including the first and the second active layers, wherein the second top surface portion of the substrate is exposed by the third hole.