Fast and accurate lithography simulation using cluster analysis in resist model building

Pardeep Kumar; Babji Srinivasan; Nihar R. Mohapatra

doi:10.1117/1.JMM.14.2.023506

18 May 2015 Fast and accurate lithography simulation using cluster analysis in resist model building

Pardeep Kumar, Babji Srinivasan, Nihar R. Mohapatra

Journal of Micro/Nanolithography, MEMS, and MOEMS, Vol. 14, Issue 2, 023506 (May 2015). https://doi.org/10.1117/1.JMM.14.2.023506

Abstract

As technology nodes continue to shrink, optical proximity correction (OPC) has become an integral part of mask design to improve the subwavelength printability. The success of lithography simulation to perform OPC on an entire chip relies heavily on the performance of lithography process models. Any small enhancement in the performance of process models can result in a valuable improvement in the yield. We propose a robust approach for lithography process model building. The proposed scheme uses the clustering algorithm for model building and thereby improves the accuracy and computational efficiency of lithography simulation. The effectiveness of the proposed method is verified by simulating some critical layers in 14- and 22-nm complementary metal oxide semiconductor technology nodes. Experimental results show that compared with a conventional approach, the proposed method reduces the simulation time by 50× with ∼5% improvement in accuracy.

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Pardeep Kumar, Babji Srinivasan, and Nihar R. Mohapatra "Fast and accurate lithography simulation using cluster analysis in resist model building," Journal of Micro/Nanolithography, MEMS, and MOEMS 14(2), 023506 (18 May 2015). https://doi.org/10.1117/1.JMM.14.2.023506

Published: 18 May 2015

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