Management Team

Mike F. Chang, Ph.D., is the founder of our company and has served as our Chairman of the Board and Chief Executive Officer since the incorporation of our company. Dr. Chang has extensive experience in both technology development and business operations in the power semiconductor industry. Prior to establishing our company, Dr. Chang served as the Executive Vice President at Siliconix Incorporated, a subsidiary of Vishay Intertechnology Inc., a global manufacturer and supplier of discrete and other power semiconductors, or Siliconix, from 1998 to 2000. Dr. Chang also held various management positions at Siliconix from 1987 to 1998. Earlier in his career, Dr. Chang focused on product research and development in various management positions at General Electric Company from 1974 to 1987. Dr. Chang received his B.S. in electrical engineering from National Cheng Kung University, Taiwan, and M.S. and Ph.D. in electrical engineering from the University of Missouri.

Yueh-Se Ho, Ph.D., is a co-founder of our company and has served as our Chief Operating Officer since January 2006 and our director since March 2006. Dr. Ho has held various operational management positions in our company since our inception, including the Vice President of Worldwide Operations from 2003 to 2006 and the Vice President of Back End Operations from 2000 to 2003. Prior to co-founding our company, Dr. Ho served as the Director of Packaging Development and Foundry Transfer at Siliconix from 1998 to 2000. Dr. Ho received his B.S. in chemistry from Tamkang University, Taiwan, and Ph.D. in chemistry from the University of Pittsburgh.

Mr. Chang joined the Company in 2009 as Director of Strategic Marketing and Worldwide Applications Engineering, and in 2010 he was promoted to Vice President of Strategic Marketing and Worldwide Applications Engineering. Earlier, he served in senior management positions in marketing, engineering, and product line with other power semiconductor companies, including Richtek. He holds an M.S. in physics from National Tsing Hua University of Taiwan, and a B.S. in electrical engineering from Taiwan National University.

Yifan Liang has served as our Chief Financial Officer and Corporate Secretary since August 2014. Mr. Liang has served as the Interim Chief Financial Officer and Corporate Secretary from November 2013 to August 2014. He has served as our Chief Accounting Officer since October 2006 and our Assistant Corporate Secretary from November 2009 to November 2013. Mr. Liang joined our Company in August 2004 as our Corporate Controller. Prior to joining us, Mr. Liang held various positions at PricewaterhouseCoopers LLP, or PwC, from 1995 to 2004, including Audit Manager in PwC's San Jose office. Mr. Liang received his B.S. in management information system from the People's University of China and M.A. in finance and accounting from the University of Alabama.

Dr. Lui served AOS as Vice President of Device Technology and Engineering from 2001 to 2007 and Fellow from 2008 to 2014. As a co-founder of the company, he helped develop the foundation of AOS' proprietary technologies in the early years of the company's history. Dr. Lui holds a Ph.D. in electrical engineering from the University of California at Berkeley and 81 patents.