YUNCHEN XU
Summary
Strong leader and problem-solver dedicated to streamlining operations to decrease costs and promote organizational efficiency. Uses independent decision-making skills and sound judgment to positively impact company success.
Overview
10
10
years of professional experience
Work History
FA Lab Support Manager
STM
08.2024 - Current
- Lead team of 3 support engineers in charge of FA Lab equipment maintenance including cross beam FIB, SEM, SRP and probe stations.
- Manage a team of 7 FA Lab technicians in charge of FA request completion and manpower optimization.
- Achieved $130K annual cost saving through optimization of procurement, material reuse, innovation and alternative materials.
- Improved single tool Zeiss cross beam FIB machine uptime from 67% to consistently above 95% quarterly by establishing robust maintenance system including recovery checklist, self innovated real time contamination monitoring dashboard as well as enhanced preventive/predictive maintenance.
Photo Process Engineer
STM
01.2023 - 08.2024
- Lead application owner for ASML and Canon scanners, coordinating with vendors for tool upgrades, alarm reduction, and calibration optimization.
- Achieved a $300K annual cost saving by solvent conversion from within 6 months.
- Spearheaded the setup of the Canon IWA stepper/TEL Act 8 for process ramp-up.
- Ongoing qualification of new photoresist for RDL process to enhance capacity.
Photo Process Engineer
SSMC
05.2021 - 12.2022
- Managed SPC as owner for inline/offline OOC reduction and improved Cpk.
- Developed and applied tool-to-tool OVL delta calculations, increasing SPC pass rate from 70% to 95%.
- Pioneered OVL matching wafer roll-out for smooth process transfer and increased capacity across matched DUVs.
Photo Process Engineer
Micron
09.2015 - 12.2020
- Extensive knowledge of photo DNS/TEL tracks, including process setup, recipe creation, and defect management.
- Proficient in ASML 248/193nm, Canon, and Nikon scanners, with expertise in recipe creation and troubleshooting process issues.
- Led the transfer of 0.13um CMOS products, overseeing track and scanner recipe setup, process window verification, and yield improvement initiatives.
- Successfully conducted smart recipe migration from ASML 248 to 193nm and Canon ES6 scanners, including resist conversion based on SIM tests and process window validation.
- Optimized developer recipes to reduce surface charge, mitigating under-etch issues and reducing scrap rates by 5%.
- Resolved iso-dense issues caused by lens chamber trips through coherence and process window checks.
- Identified and eliminated root causes of downstream etch endpoint alarms by improving photo Barc thickness uniformity.
- Applied DOE to pinpoint and mitigate wafer edge yield losses, implementing safeguards to prevent track delay-induced defects.
- Managed Fault Detection and Classification (FDC), reducing alarms per k-move from 0.35 to 0.15 by refining alarm settings and improving inline/yield monitoring.
- Experienced with OVL and CD SEM metrology tools, including recipe setup and process alignment.
- Strong project management skills, consistently delivering on time in fast-paced environments.
- Skilled in data analysis and problem-solving using 8D, SPC, FMEA, and DOE methodologies.
Education
Master of Engineering - Chemical Engineering
National University of Singapore (NUS)
01.2015
Bachelor of Engineering - Chemical Engineering, Honors
National University of Singapore (NUS)
07.2013
Skills
Effective decision-making
Budget management
Problem-solving
Stakeholder management
CO-CURRICULAR ACTIVITIES
International Conference on Life System Modeling and Simulation Sep 2014 Attend the Life system Modeling and Simulation Conference with paper ‘Direct Design of PID Controllers for Stable Processes with Inverse Response'
ADDITIONAL INFORMATION
- Singapore PR
- Proficient in programming using Matlab and Matlab GUI design
- Expert in JMP, Microsoft Office Tableau, Power BI for data analysis.
- Fluent in English and Mandarin (both spoken and written).
- Hard working with high sense of responsibility
- Organized and effective.
Timeline
FA Lab Support Manager
STM
08.2024 - Current
Photo Process Engineer
STM
01.2023 - 08.2024
Photo Process Engineer
SSMC
05.2021 - 12.2022
Photo Process Engineer
Micron
09.2015 - 12.2020
Bachelor of Engineering - Chemical Engineering, Honors
National University of Singapore (NUS)
Master of Engineering - Chemical Engineering
National University of Singapore (NUS)