Patent ID: 7754565

Claim:
A manufacturing method of a semiconductor device, comprising: forming a first member to be patterned on a semiconductor substrate; forming a second member to be patterned on the first member; forming a third member to be patterned on the second member; patterning the third member to form a first line pattern and a first connecting portion in the third member, the first line pattern having a plurality of parallel linear patterns and the first connecting portion connecting the linear patterns on at least one end side of the linear patterns of the first line pattern; etching the second member with the third member as a mask to form a second line pattern and a second connecting portion in the second member, the second line pattern being the same pattern as the first line pattern and the second connecting portion being the same pattern as the first connecting portion; removing the second connecting portion of the second member; and etching the first member with the second member as a mask.