TSMC April 2004 Sales Set New Record High

Hsinchu, Taiwan, May 7, 2004 - Taiwan Semiconductor Manufacturing Company Ltd. (TSMC) (“the Company”) (TAIEX: 2330, NYSE: TSM) today announced that net sales for April 2004 reached a new record high of NT$20,631 million, representing a 3.3 percent increase over March 2004. On a year-over-year basis, net sales for April 2004 increased 35.2 percent.

Ms. Lora Ho, TSMC vice president and chief financial officer, noted that, “TSMC continues to increase our capacity to meet customers' needs. Although TSMC had approximately 0.6 day's loss of wafer movement due to the power outage on April 10th, 2004 in Hsinchu, TSMC's sales increased sequentially as a result of higher wafer shipments.”

Sales Report: (Unit: NT$ million)

Net Sales

2004(1)

2003

Growth Rate

April

20,631

15,264

35.2%

January through April

78,144

54,590

43.1%

(1): Year 2004 figures have not been reviewed.