Jul 21, 2005

ChipMOS To Present At RBC 2005 North American Technology Conference

HSINCHU, Taiwan, July 21 /Xinhua-PRNewswire-FirstCall/ -- ChipMOS TECHNOLOGIES (Bermuda) LTD. ("ChipMOS" or the "Company") (Nasdaq: IMOS - News) today announced that it is scheduled to present at the RBC 2005 North American Technology Conference on August 2, 2005 in San Francisco. S. K. Chen, Chief Financial Officer, will be presenting. A live webcast will be available through the Company's website at www.chipmos.com.tw .

Place: The Four Seasons Hotel San Francisco, California Date: Tuesday, August 2, 2005 Time: 9:35 a.m., PDT Webcast Access: www.chipmos.com.tw

About ChipMOS TECHNOLOGIES (Bermuda) LTD.: ChipMOS ( http://www.chipmos.com.tw ) is a leading independent provider of semiconductor testing and assembly services to customers primarily in Taiwan, Japan, and the U.S. With advanced facilities in Hsinchu and Southern Taiwan Science Parks in Taiwan and in Shanghai, ChipMOS and its subsidiaries provide testing and assembly services to a broad range of customers, including leading fabless semiconductor companies, integrated device manufacturers and independent semiconductor foundries.

Forward-Looking Statements

Certain statements contained in this announcement may be viewed as "forward-looking statements" within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended, and Section 21E of the U.S. Securities Exchange Act of 1934, as amended. Such forward-looking statements involve known and unknown risks, uncertainties and other factors, which may cause the actual performance, financial condition or results of operations of the Company to be materially different from any future performance, financial condition or results of operations implied by such forward-looking statements. Further information regarding these risks, uncertainties and other factors is included in the Company's most recent Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission (the "SEC") and in the Company's other filings with the SEC.

Contact:

In Taiwan R.O.C. In the U.S. Dr. S.K. Chen The Ruth Group ChipMOS TECHNOLOGIES (Bermuda) LTD David Pasquale Tel: +886-6-507-7712 Tel: +1-646-536-7006 Email: s.k._chen@chipmos.com.tw Email: dpasquale@theruthgroup.com