Assembly of an aperture plate system for projection mask-less lithography

Mask-less lithography becomes more and more important to reduce cycle time and lithography costs for device prototyping and small batch ASIC manufacturing. A European consortium is developing an electron multi beam technology – called projection mask-less lithography (PML2)–for the 45 nm, 32 nm node...

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Veröffentlicht in:Microelectronic engineering 2006-04, Vol.83 (4), p.980-983
Hauptverfasser: Mohaupt, M., Eberhardt, R., Damm, C., Peschel, T., Tünnermann, A., Haugeneder, E., Döring, H.-J., Brandstätter, C.
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Sprache:eng
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Zusammenfassung:Mask-less lithography becomes more and more important to reduce cycle time and lithography costs for device prototyping and small batch ASIC manufacturing. A European consortium is developing an electron multi beam technology – called projection mask-less lithography (PML2)–for the 45 nm, 32 nm node and beyond. The multi beam blanking device (programmable “aperture plate system”-APS) is one of the challenging key elements of PML2 [H.-J. Döring et al., Proc. SPIE 5751 (2005); C. Brandstätter et al., Proc. SPIE 5835 (2005)]. This paper will focus on the precision assembly concept and the alignment procedure of the aperture plate system. Major system specifications and their influence on the sub-μm assembly and alignment accuracy will be discussed in the context of mechanical, thermal and magnetic constraints.
ISSN:0167-9317
1873-5568
DOI:10.1016/j.mee.2006.01.069