Journal
Optical Microlithography XX, Pts 1-3
Volume 6520, Issue -, Pages 52004-52004Publisher
SPIE-INT SOC OPTICAL ENGINEERING
DOI: 10.1117/12.720631
Keywords
lithography history; photolithography; optical lithography; immersion; reduction lithography
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Optical lithography has been the dominant patterning process for semiconductor fabrication for over 40 years. The patterning process evolved initially from methods used in the printing industry, but as integrated circuits became more complex, and as device geometries shrank, sophisticated new imaging methods evolved. Today's optical lithography systems represent the highest resolution, most accurate optical imaging systems ever produced. This remarkable evolutionary process continues to this day, paced by Moore's Law. The evolutionary development of lithography systems over the last 40 years is reviewed along with a brief discussion of options for the future.
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