Patent ID: 11900040
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method, comprising:
receiving a design layout comprising a feature extending in a peripheral region and a central region of the design layout;
determining compensation values associated with a pellicle assembly and the peripheral region according to an exposure distribution in an exposure field of a workpiece;
adjusting the design layout by modifying a shape of the feature according to the compensation values; and
manufacturing a mask according to the design layout,
wherein the modifying of the shape of the feature according to the compensation values comprises:
partitioning the peripheral region into compensation zones, wherein the feature comprises first portions disposed within the respective compensation zones and a second portion disposed within the central region; and
reducing line widths of the first portions of the feature according to the compensation values associated with the respective compensation zones while keep the second portion of the feature uncompensated.