Patent ID: 11947254
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A system for semiconductor manufacturing, comprising:
a processor;
wherein the processor is configured to:
calibrate an optical proximity correction (OPC) model by adjusting a plurality of parameters including a first parameter and a second parameter, wherein the first parameter corresponds to a long-range effect caused by an electron-beam lithography tool for making a mask used to manufacture a structure, and the second parameter corresponds to a geometric feature of a structure or a manufacturing process to make the structure;
calculate a first grid pattern density map of a device layout;
generate a long-range correction map, at least based on the calibrated OPC model and the first grid pattern density map of the device layout; and
perform an OPC to generate a corrected mask layout, at least based on the generated long-range correction map and the calibrated OPC model.