Patent Document ID: 9678441
Application ID: 14537639
Patent Status: 1

Claim One:
1. A method for generating a pattern of a mask to be used for a mask manufacturing method for manufacturing the mask using the generated pattern of the mask, the method comprising the following steps being performed by a processor: setting a pattern on an object plane of the projection optical system; shifting a pupil function representing a pupil of the projection optical system in accordance with a position of a point light source at coordinates on a pupil plane of the projection optical system for individual point light sources on the pupil plane, and generating shifted plural pupil functions; defining a matrix containing the generated plural pupil functions; generating a vector obtained by transposing and complex-conjugating a vector containing, as components, values at an origin coordinate on the pupil plane from among components of the matrix; calculating an image of the pattern on the object plane by performing convolution integral between the pattern on the object plane and a Fourier transform of a product of the generated vector and the matrix; and generating, using the calculated image, an assist pattern for the pattern on the object plane, and generating a pattern of the mask including the pattern on the object plane and the assist pattern, wherein the mask manufacturing method comprises a step of manufacturing the mask including the generated pattern using data of the generated pattern.