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Dr. Tseng led 110 specialists to spin off from ITRI's Electronics Research & Service Organization (ERSO), and in 1987 co-founded TSMC as a pioneer specializing in the "foundry only" semiconductor manufacturing business. Dr. Tseng established a solid technical base for TSMC's 6-inch and 8-inch fabs.
From 1973 to 1986, Dr. Tseng served at ITRI-ERSO, where in 1976 he was one of the pioneers in setting up the IC project in Taiwan. He was responsible for installing the 7.5 mm metal-gate CMOS process into the 3-inch line, which later was converted smoothly to 4-inch under his management. In 1978, Dr. Tseng was promoted to plant manager of the IC demonstration plant, where he was responsible for the production and development of silicon-gate CMOS from 5 mm to 1.2. Under his supervision, he established the capability to develop an advanced CMOS process.
He holds a Ph.D in Electrical Engineering from National Cheng Kung University, Taiwan. Dr. Tseng was named as one of the "Outstanding Alumni" by National Cheng Kung University in 2000, and one of the "Ten Outstanding Engineers" in 1991 and "The Excellent Engineers" in 1982 respectively by the Chinese Institute of Engineers and by Electronic Buyer's News as one of the Hot 25-Industry Executives who made a difference in 1999.