Special Section on Control of Integrated Circuit Patterning Variance Part 1: Metrology, Process Monitoring, and Control of Critical Dimension

Application of E-beam hot spot inspection for early detection of systematic patterning problems to a FinFET technology

[+] Author Affiliations
Deborah A. Ryan, Oliver D. Patterson, David Conklin, Jim Liang, Glenn Biery, Atsushi Ogino, Bachir Dirahoui, Zachary Baum, Mike D. Monkowski

IBM Semiconductor Research and Development Center, 2070 Route 52, Hopewell Junction, New York 12533, United States

Shuen-Cheng Chris Lei

Hermes Microvision Inc., 1762 Automation Parkway, San Jose, California 95131, United States

J. Micro/Nanolith. MEMS MOEMS. 14(2), 021106 (May 13, 2015). doi:10.1117/1.JMM.14.2.021106
History: Received October 31, 2014; Accepted April 13, 2015
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Abstract.  Early in-line detection of systematic patterning problems in technology development can dramatically improve a technology’s chance for success. By uncovering layout geometries that are difficult to implement, prompt action may be taken so that solutions are in place well before product chips that contain these and similar patterns enter the manufacturing line. If a solution is not in place, this could spell disaster for the product and perhaps even the technology. Ideally, product chips will work on the first lot, which is referred to as “first time right.” To help ensure this, a methodology for in-line detection of systematic patterning problems using E-beam hot spot inspection (EBHI) was developed. We review this methodology, including the latest enhancements. Pattern simulation tools and other sources are used to provide die locations with challenging geometries for evaluation. EBHI evaluates the patterning capability for these locations using modulated wafers. A multifunction team addresses any hot spots that fail within the process window. EBHI is then used to evaluate the solutions proposed by this team. Application of this methodology to a fin-shaped field effect transistor technology is described using examples from the fin and back end of line modules. These examples illustrate the full range of actions used to resolve patterning issues.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Deborah A. Ryan ; Oliver D. Patterson ; Shuen-Cheng Chris Lei ; David Conklin ; Jim Liang, et al.
"Application of E-beam hot spot inspection for early detection of systematic patterning problems to a FinFET technology", J. Micro/Nanolith. MEMS MOEMS. 14(2), 021106 (May 13, 2015). ; http://dx.doi.org/10.1117/1.JMM.14.2.021106


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