23 January 2015 Topology-oriented pattern extraction and classification for synthesizing lithography test patterns
Author Affiliations +
J. of Micro/Nanolithography, MEMS, and MOEMS, 14(1), 013503 (2015). doi:10.1117/1.JMM.14.1.013503
A small but diverse set of test patterns is essential for the optimization of lithography parameters. We selectively extract the complicated patterns that are likely to cause lithography defects from test layouts. These patterns are hierarchically classified into groups based on geometric similarity; then, a small number of patterns are chosen to represent each group. We demonstrate this approach in the synthesis of test patterns for metal layers. The total area of the resulting test patterns is only 10% of that of a set produced using a more conventional technique; the resulting hotspot library has 30% fewer patterns, and the time required to create it is cut by an order of magnitude.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Seongbo Shim, Youngsoo Shin, "Topology-oriented pattern extraction and classification for synthesizing lithography test patterns," Journal of Micro/Nanolithography, MEMS, and MOEMS 14(1), 013503 (23 January 2015). https://doi.org/10.1117/1.JMM.14.1.013503

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