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Journal of Micro/Nanolithography, MEMS, and MOEMS

Fast and accurate lithography simulation using cluster analysis in resist model building
Author(s): Pardeep Kumar; Babji Srinivasan; Nihar R. Mohapatra
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Paper 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.

Paper Details

Date Published: 18 May 2015
PDF: 6 pages
J. Micro/Nanolith. 14(2) 023506 doi: 10.1117/1.JMM.14.2.023506
Published in: Journal of Micro/Nanolithography, MEMS, and MOEMS Volume 14, Issue 2
Show Author Affiliations
Pardeep Kumar, Indian Institute of Technology Gandhinagar (India)
Babji Srinivasan, Indian Institute of Technology Gandhinagar (India)
Nihar R. Mohapatra, Indian Institute of Technology Gandhinagar (India)


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