Patent ID: 7647568

Claim:
A manufacturing method of a mask comprising: extracting a reference pattern and a non-array pattern adjacent thereto from design patterns of a layer, the reference pattern and the non-array pattern being actual patterns of the design patterns of the layer, wherein the design patterns comprise the reference pattern, at least one array pattern disposed spaced by a predetermined interval from the reference pattern, and the non-array pattern disposed spaced at an irregular interval with respect to the reference pattern; calculating correction bias maximum value Pmax from a first corner of the reference pattern to a Y axis in the direction of the non-array pattern and Qmax from a second corner of the reference pattern to an X axis in the direction of the non-array pattern; extracting a triangular intersection pattern formed by intersecting a reference line with the non-array pattern, wherein the reference line is inclined at 45° from an X axis at a vertex of the reference pattern closest to the non-array pattern; if the lengths of the triangular intersection pattern are given as Δx and Δy, calculating actual correction bias values Preal and Qreal of the reference pattern with equations Δ ⁢ ⁢ x x = P ⁢ ⁢ real P ⁢ ⁢ max ⁢ ⁢ and ⁢ ⁢ Δ ⁢ ⁢ y y = Q ⁢ ⁢ real Q ⁢ ⁢ max , where x is the X axis direction length of the non-array pattern and y is the Y axis direction length of the non-array pattern; and manufacturing a mask having an optical proximity corrected (OPC) mask pattern by applying the actual correction bias values Preal and Qreal from the first and second corner, respectively.