Patent ID: 8114778

Claim:
A method of manufacturing a semiconductor device in which an even number of insert patterns are formed by double patterning between a first basic pattern disposed at a left side and a second basic pattern disposed at a right side which are transversely separated from each other on a semiconductor substrate, wherein a first insert pattern and a second insert pattern are alternately repeated to form the insert patterns, the method comprising: (a) forming a first material layer on the semiconductor substrate; (b) forming first patterns of a second material layer on the first material layer, wherein the first patterns of the second material layer respectively correspond to a region where the first basic pattern, a region where the second basic pattern, and a region where the first insert pattern are to be subsequently formed; (c) forming a first pattern of a third material layer on the first patterns of the second material layer so as to form a plurality of first spaces between the adjacent first patterns; (d) forming first patterns of a fourth material layer on the first pattern of the third material layer, thereby filling the plurality of first spaces; (e) forming a shielding layer pattern to completely cover a top surface of the first pattern of the third material layer between a first pattern among the first patterns of the second material layer, and a first pattern among the first patterns of the fourth material layer, wherein the first pattern among the first patterns of the second material layer is on the region where the second basic pattern is to be subsequently formed, and wherein the first pattern among the first patterns of the fourth material layer is most adjacent to the first pattern among the first patterns of the second material layer; and (f) using the first patterns of the second material layer, the first patterns of the fourth material layer, and the shielding layer pattern as an etching mask to etch the first pattern of the third material layer, and then to etch the first material layer, thereby forming a first pattern of the first material layer including the first basic pattern, the second basic pattern, the first insert pattern, and the second insert pattern.