Patent ID: 8097951

Claim:
An integrated circuit comprising: a wiring layer laminated on a substrate and having a pattern in which is formed a gap for forming a narrow trench and a wide open part contiguous with the gap; and an interlayer insulation film built up so as to cover the wiring layer; wherein the pattern of the wiring layer has a corner part present in a portion in which the gap and the open part are connected, the corner part is chamfered, and an end part of the gap is formed in a shape that widens toward the open part; the chamfered corner part has a first edge parallel to the narrow trench, a second edge that is facing the wide open part and is perpendicular to the first edge, and a slanted edge diagonally crossing each of the first edge and the second edge; and a width of a part of the gap adjacent to the slanted edge at a position along the gap monotonically increases as the position moves closer to a boundary of the open part defined by an extended line of the second edge.