Patent ID: 7776750

Claim:
A method for forming a pattern in a semiconductor device, the method comprising: forming an insulating film over a semiconductor substrate; forming a multifunctional hard mask layer over the insulating film; forming a first hard mask layer and a second hard mask layer over the multifunctional hard mask layer; selectively etching the second hard mask layer to form a second hard mask layer pattern; etching the first hard mask layer using a mask and the second hard mask layer pattern to form a first hard mask layer pattern, wherein the mask intersects the second hard mask layer pattern on a plane; removing the second hard mask layer pattern; etching the multifunctional hard mask layer using the first hard mask layer pattern as an etching mask to form a multifunctional hard mask layer pattern; removing the first hard mask layer pattern; performing a resist flow process on the multifunctional hard mask layer pattern, thereby forming a contact hole pattern; and patterning the insulating film using the contact hole pattern as an etching mask to form a contact hole.