POSTECH, Professor                             ( 2025.09~Present)
- Electrical Engineering Department 

POSTECH, Associate Professor         ( 2019.02~2025.08)
- Electrical Engineering Department 

LG Display                                                (1999.03~2019.02)
- Principal Research Engineer
- Material Research Team Leader
- P.I of LG Convergent  PJT for Emotional Touch 

University of Cambridge ,Ph.D          (2006.01~2010.02)
- Engineering Department (Electrical),
- Queens' College