Patent ID: 9490181
Filing Date: 2016-11-08
CPC Classification: G03F,H01L

Claim Text:
1. A misalignment/alignment compensation method for a lithography process, comprising: obtaining misalignment data associated with an alignment mark disposed on a substrate; and obtaining a compensation parameter by performing asymmetry compensation calculation on at least one of a first directional component of the misalignment data, which is associated with a first direction, and a second directional component of the misalignment data, which is associated with a second direction, wherein the asymmetry compensation calculation is performed according to a user-defined asymmetry condition that is asymmetric between the first direction and the second direction, and the user-defined asymmetry condition is associated with a difference with respect to the first direction and the second direction and in a form of a number, a ratio, a weighting or a percentage.