Patent ID: 7183022
Filing Date: 2007-02-27
Classification: G03F

Abstract:
1. A method for producing a mask set for lithography including a mask, which comprises: using, as a basis, a predetermined layout of structures to be imaged into a common exposure plane and transferred to the mask; and transferring the structures depending on a coupling of the structures such that the structures are not strongly coupled on the mask; and assigning auxiliary structures to individual ones of the structures for improving imageability of the structures, the assigned auxiliary structures not being imageable with radiation provided for imaging the masks, and having a specific distance d from the structure respectively assigned to the auxiliary structures and a specific width b; determining distances D between adjacent structures; classifying the distances D in a manner depending on coupling strength of the adjacent structures: dividing the structures between the masks to configure only weakly coupled structures and uncoupled structures on any one of the masks.