Patent ID: 7883836

Claim:
A method for forming a fine pattern of a semiconductor device, the method comprising: forming a first hard mask layer to a fifth hard mask layer over a semiconductor substrate having a nitride film; forming a first photoresist film pattern over the fifth hard mask layer by using a first mask having a first pattern for forming a first fine pattern and a second pattern for forming a first connected pattern that includes first and second portions that are separated by a space; etching the fifth hard mask layer by using the first photoresist film pattern to form a fifth hard mask layer pattern; forming a second photoresist film pattern over the fourth hard mask layer including the fifth hard mask layer pattern by using a second mask having a third pattern for forming a second fine pattern and a fourth pattern for forming a second connected pattern, wherein the second connected pattern is formed over the first and second portions of the first connected pattern and buries the space between the first and second portions of the first connected pattern to form a wide pattern that covers an area defined by the space; and selectively etching the fourth hard mask layer to the first hard mask layer by using the first photoresist film pattern and the second photoresist film pattern to form the first and second fine patterns and the wide pattern over the semiconductor substrate, wherein the first fine pattern is separated from the second fine pattern.