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Proceedings Paper

Improving material-specific dispense processes for low-defect coatings
Author(s): Brian Smith; Raul Ramirez; Jennifer Braggin; Aiwen Wu; Karl Anderson; John Berron; Nick Brakensiek; Carlton Washburn
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Paper Abstract

Minimizing defects in spin-on lithography coatings requires a careful understanding of the interactions between the spin-on coating material and the filtration and dispense system used on the coating track. A wet-developable bottom anti-reflective coating (BARC) was examined for its interaction with polyamide and UPE media when utilizing the Entegris IntelliGen Mini dispense system. In addition, a new method of priming the filter and pump is described which improves the wetting of the filter media, preventing bubbles and other defect-generating air pockets within the system. The goal is to establish plumb-on procedures that are material and hardware specific to avoid any defect problems in the coating process, as well as to gain a better understanding of the chemical and physical interactions that lead to coating defects. Liquid particle counts from a laboratory-based filtration stand are compared with on-wafer defects from a commercial coating track to establish a correlation and allow better prediction of product performance. This comparison in turn will provide valuable insight to the engineering process of product filtration and bottling at the source.

Paper Details

Date Published: 30 March 2010
PDF: 6 pages
Proc. SPIE 7639, Advances in Resist Materials and Processing Technology XXVII, 763929 (30 March 2010); doi: 10.1117/12.846642
Show Author Affiliations
Brian Smith, Brewer Science, Inc. (United States)
Raul Ramirez, Entegris, Inc. (United States)
Jennifer Braggin, Entegris, Inc. (United States)
Aiwen Wu, Entegris, Inc. (United States)
Karl Anderson, Entegris, Inc. (United States)
John Berron, Brewer Science, Inc. (United States)
Nick Brakensiek, Brewer Science, Inc. (United States)
Carlton Washburn, Brewer Science, Inc. (United States)

Published in SPIE Proceedings Vol. 7639:
Advances in Resist Materials and Processing Technology XXVII
Robert D. Allen, Editor(s)

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