| 2005/08 - 2008/07 | Director, Electrical Laboratories, EECS College, National Cheng Kung University, Taiwan |
| 2005/08 - 2008/07 | Director, Center for Research of E-life Digital Technology, National Cheng Kung University, Taiwan |
| 2005/08 - present | Distinguished Professor, Department of Electrical Engineering, National Cheng Kung University, Taiwan |
| 2000/08 - 2005/07 | Vice Director, Center for Research of E-life Digital Technology, National Cheng Kung University, Taiwan |
| 1996/08 - present | Professor, Department of Electrical Engineering, National Cheng Kung University, Taiwan |
| 1991/08 - 1996/07 | Associate Professor, Department of Electrical Engineering, National Cheng Kung University, Taiwan |
| 1987/01 - 1991/07 | Research Assistant, Department of Electrical Engineering, Texas Tech University, USA |
| 1983/07 - 1986/12 | Research Assistant, Chung-Shan Institute of Science & Technology, Taiwan |
