Patent ID: 9484186
Filing Date: 2016-11-01
CPC Classification: G03F,H01J

Claim Text:
1. In an electronic design automation (EDA) software tool in a computer, a method for correcting a mask layout to compensate for electron-beam (e-beam) proximity effects during e-beam lithography, the method comprising: receiving a calibrated e-beam model which includes a long-range component which models long-range electron effects and a short-range component which models short-range electron effects; receiving a mask layout to be corrected, wherein the mask layout is generated based on a design intent; the EDA software tool in the computer pre-computing a first resist intensity map based on the long-range component of the calibrated e-beam model and the mask layout; and the EDA software tool in the computer correcting a target pattern within the mask layout by, iteratively: