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Autor:
Wim de Boeij, Bart van Bussel, Young Ha Kim, Wim Bouman, Young Seog Kang, Roelof de Graaf, Jong Hoon Jang, AJ Arij Rijke, Chansam Chang, Richard Droste, Patrick Neefs, Jeong-Heung Kong, ByeongSoo Lee, Stefan Weichselbaum
Publikováno v:
SPIE Proceedings.
Adjustment and control of the illumination pupil asymmetry is relevant for wafer alignment and overlay of lithography tools. Pupil asymmetries can cause a tilt in aerial image (Aerial Image Tilt, or AIT). This AIT, combined with a focus offset, leads