Open Access Paper
1 January 1987 Focus : The Critical Parameter For Submicron Optical Lithography: Part 2
William H. Arnold, Harry J. Levinson
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Abstract
Depth of focus requirements and contributions to the focal error budget for submicron optical lithography are reviewed. Models are presented which estimate depth of focus in both thin and thick layers of photoresist. The effects of resist refraction on usable depth of focus are considered. Measurements of image plane tilt, curvature, and astigmatism in 5X reduction lenses collected using an automated, in situ, aerial image monitor are analyzed.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William H. Arnold and Harry J. Levinson "Focus : The Critical Parameter For Submicron Optical Lithography: Part 2", Proc. SPIE 0772, Optical Microlithography VI, (1 January 1987); https://doi.org/10.1117/12.967030
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CITATIONS
Cited by 11 scholarly publications.
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KEYWORDS
Semiconducting wafers

Monochromatic aberrations

Optical lithography

Photoresist processing

Lenses

Wafer-level optics

Refraction

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