Patent ID: 8103995
Filing Date: 2012-01-24
Classification: G03F

Abstract:
1. A method for forming a device, comprising: obtaining a design layout comprising a layout pattern including features; establishing an optical proximity correction (OPC) model; and performing a correcting layout and simulating image quality step to the design layout, which comprises setting a plurality of pre-target points and pre-dissection points, electing a target point and a dissection point for correcting the segments of the layout pattern from the pre-target points and pre-dissection points according to a normalized image log slope (NILS) and a mask error enhancement factor (MEEF) of the pre-target points and pre-dissection points, and obtaining a corrected layout of the design layout according to the elected target point and a dissection point; and outputting the corrected layout to a mask; transferring the corrected layout from the mask to a substrate with light passing through the mask, wherein a plurality of sets of corrected segments are generated when setting the pre-target points or pre-dissection points, and the target point or the dissection point for correcting the segments of the layout pattern are elected according to the pre-target points or pre-dissection points that achieve the greatest NILS or the smallest MEEF.