TSMC Senior Vice President and Chief Information Officer Dr. Quincy Lin to Retire

Hsinchu Science Park, Taiwan, September 29, 2004 - Taiwan Semiconductor Manufacturing Company (TSMC) (TAIEX: 2330, NYSE: TSM) today said that Dr. Quincy Lin, Senior Vice President and Chief Information Officer of the Company, has set a retirement date for February 28, 2005. At that time, Dr. Stephen T. Tso, President of WaferTech LLC (“WaferTech”), TSMC’s wholly-own subsidiary in Camas, Washington, USA, will become the new Senior Vice President and Chief Information Officer of TSMC.

“Quincy dedicated himself to helping TSMC grow from the moment he first joined the young Company in 1989,” said Dr. Morris Chang, Chairman and CEO of TSMC. “I would like to express my personal gratitude for Quincy’s significant contributions in his 15 years of service with TSMC. We wish him all the best for his future endeavors.”

Dr. Lin held a variety of management positions at TSMC, heading up organizations including Strategic Planning, Human Resources and Administration, Corporate Marketing and Sales, and Corporate Development and Information Technology. His distinguished contribution is highly recognized by both the company and the IC industry.

Dr. Stephen T. Tso, the current President of WaferTech, also has a long history with TSMC. He joined the company in 1997 as Vice President of R&D, and has also been its Senior Vice President of Worldwide Marketing and Sales and Senior Vice President of Operations.

“I have every confidence that Dr. Tso will continue in Dr. Lin’s footsteps, making outstanding contributions in his new assignment,” said Dr. Morris Chang.

Mr. K.C. Hsu, Vice President of WaferTech, will take over Dr. Stephen T. Tso’s position as the President of WaferTech.