Patent ID: 7313508

Claim:
A method of performing process window compliant corrections of a design layout, said method comprising the steps of: a) providing an original layout pattern which is the target develop inspect critical dimension definition; b) simulating develop inspect critical dimension at best exposure conditions using said original layout pattern; c) simulating develop inspect critical dimension at predefined boundary exposure conditions using said original layout pattern; d) converging if said develop inspect critical dimension at best exposure conditions meets said target develop inspect critical dimension definition and if said develop inspect critical dimension at predefined boundary exposure conditions meets process window specifications; e) if said develop inspect critical dimension at best exposure conditions does not meet said target develop inspect critical dimension definition, or if said develop inspect critical dimension at predefined boundary exposure conditions does not meet process window specifications, modifying said original layout repeating steps (c) and (d), wherein the target develop inspect critical dimension definition is the correction specification limit defined by an upper develop inspect dimension specification limit minus a mask error limit and a lower develop inspect critical dimension specification limit plus the mask error limit; and f) displaying said original layout pattern.