Associate Professor, Department ofEE., National Chung Cheng University (CCU), Chiayi, Taiwan, R.O.C. (8/1996 ~ 7/2005)
Assistant Scientist, Institute of Electronics and Center of Material Research and Development, Chung Shan Institute of Science and Technolog (CSIST), Long-Tan, Taiwan, R.O.C. (9/1990-6/1996)
Instructor, Department of EE., Ming-Shing Institute of Technology, Hsinchu, Taiwan, R.O.C. (8/1989-7/1990)
Adjunct Associate Professor, Department of Computer Science and Information Engineering, Yuan-Ze University, Taoyuan, Taiwan, R.O.C.(2/1995-7/1997)