20 March 2018 Advanced light source technologies for memory and logic processes (Conference Presentation)
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Abstract
DUV ArF immersion lithography requires patterning budget improvements in the range of 1/10 nm especially for interconnect layers for advanced process nodes. As every angstrom counts, the Cymer XLR 860ix light source has been developed to deliver the performance required for multiple patterning processes across all sectors: DRAM, 3D NAND, and logic. This paper will describe how imaging margins can be increased by optimizing light source bandwidth settings. Advancements include new hardware and software that enable industry leading bandwidth performance and control. In addition, on-wafer measurements were collected showing the progressive improvements gained with lowering bandwidth on an existing mask. As system availability is a key enabler for chipmakers, the introduction of this new DUV light source includes improvements that continue to improve productivity by increasing service intervals by >30% while also providing sustainability enhancements.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Theodore Cacouris, Josh Thornes, Marc Sells, Aleks Simic, and Will Conley "Advanced light source technologies for memory and logic processes (Conference Presentation)", Proc. SPIE 10587, Optical Microlithography XXXI, 105870Y (20 March 2018); doi: 10.1117/12.2298431; https://doi.org/10.1117/12.2298431
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