Comparison of conventional and maskless lithographic techniques for More than Moore post-processing of foundry CMOS chips

Andreas Tsiamis; Yifan Li; Camelia Dunare; Jamie R.K. Marland; Ewen O. Blair; Stewart Smith; Jonathan G. Terry; Srinjoy Mitra; Ian Underwood; Alan F. Murray; Anthony J. Walton

doi:10.1109/JMEMS.2020.3015964

Comparison of conventional and maskless lithographic techniques for More than Moore post-processing of foundry CMOS chips

Andreas Tsiamis^*, Yifan Li, Camelia Dunare, Jamie R.K. Marland, Ewen O. Blair, Stewart Smith, Jonathan G. Terry, Srinjoy Mitra, Ian Underwood, Alan F. Murray, Anthony J. Walton

^*Corresponding author for this work

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Abstract

This article details and compares the technology options for post-processing foundry produced CMOS at chip-scale to enable More than Moore functionality. In many cases there are attractions in using chip-based processing through the Multi-Project Wafer route that is frequently employed in research, early-stage development and low-volume production. This article identifies that spray-based photoresist deposition combined with optical maskless lithography demonstrates sufficient performance combined with low cost and operational convenience to offer an attractive alternative to conventional optical lithography, where spin-coated photoresist is exposed through a patterned photomask.

Original language	English
Article number	9173531
Pages (from-to)	1245-1252
Number of pages	8
Journal	Journal of Microelectromechanical Systems
Volume	29
Issue number	5
Early online date	21 Aug 2020
DOIs	https://doi.org/10.1109/JMEMS.2020.3015964
Publication status	Published - 1 Oct 2020

Funding

Manuscript received June 25, 2020; revised August 5, 2020; accepted August 6, 2020. Date of publication August 21, 2020; date of current version October 7, 2020. This work was supported by the U.K., Engineering and Physical Sciences Research Council, through the Implantable Microsystems for Personalized Anti-Cancer Therapy (IMPACT) Programme under Grant EP/K034510/1. Subject Editor P. M. Sarro. (Corresponding author: Andreas Tsiamis.) Andreas Tsiamis, Stewart Smith, and Alan F. Murray are with the School of Engineering, Institute for Bioengineering, University of Edinburgh, Edinburgh EH9 3FF, U.K. (e-mail: [email protected]).

Keywords

CMOS
maskless
more than Moore
on-chip
optical lithography
photomask
post-processing
spin-coating
spray-coating

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Tsiamis-etal-2020-Comparison-of-conventional-and-maskless-lithographic-techniques-for-More-than-MooreAccepted author manuscript, 8.29 MB

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Tsiamis, A., Li, Y., Dunare, C., Marland, J. R. K., Blair, E. O., Smith, S., Terry, J. G., Mitra, S., Underwood, I., Murray, A. F., & Walton, A. J. (2020). Comparison of conventional and maskless lithographic techniques for More than Moore post-processing of foundry CMOS chips. Journal of Microelectromechanical Systems, 29(5), 1245-1252. Article 9173531. https://doi.org/10.1109/JMEMS.2020.3015964

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Tsiamis, A, Li, Y, Dunare, C, Marland, JRK, Blair, EO, Smith, S, Terry, JG, Mitra, S, Underwood, I, Murray, AF & Walton, AJ 2020, 'Comparison of conventional and maskless lithographic techniques for More than Moore post-processing of foundry CMOS chips', Journal of Microelectromechanical Systems, vol. 29, no. 5, 9173531, pp. 1245-1252. https://doi.org/10.1109/JMEMS.2020.3015964

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Comparison of conventional and maskless lithographic techniques for More than Moore post-processing of foundry CMOS chips

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