Paper
25 July 1989 Step And Scan: A Systems Overview Of A New Lithography Tool
Jere D. Buckley, Charles Karatzas
Author Affiliations +
Abstract
The Micrascan I system, a new 0.5-micron lithography tool, employs a 'step-and-scans concept that combines the virtues of ring-field scanning systems with those of conventional step-and-repeat systems. Individual exposure fields on the wafer are sequentially scanned past the arcuate image field of a catadioptric projection optics system with a 4:1 reduction ratio. The reticle is scanned in precisely coordinated fashion by a separate stage. Exposure illumination is provided by a long-life mercury-xenon arc lamp. The concept enables very large field sizes and high system productivity.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jere D. Buckley and Charles Karatzas "Step And Scan: A Systems Overview Of A New Lithography Tool", Proc. SPIE 1088, Optical/Laser Microlithography II, (25 July 1989); https://doi.org/10.1117/12.953171
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CITATIONS
Cited by 19 scholarly publications and 36 patents.
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KEYWORDS
Semiconducting wafers

Reticles

Optical alignment

Wafer-level optics

Projection systems

Laser optics

Lithography

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