HSINCHU, Taiwan, Oct. 18, 2005 -- ChipMOS TECHNOLOGIES (Bermuda) LTD. ("ChipMOS" or "the Company") (Nasdaq: IMOS) today announced that it will host its annual technical symposium at the Grand Hyatt Shanghai in Shanghai, China on November 4, 2005. Over 200 participants are expected to attend the full day symposium, which will focus on green packaging and modules and LCD driver IC related topics covering front-end, back-end, as well as market and application trends. In addition to ChipMOS executives, speakers will feature the company's customers, suppliers and project partners, including Shanghai SVA NEC, NewVision, Sumitomo Bakelite, Himax Display and Shanghai Jiaotong University. Simultaneous Chinese to English translation will be available.

S.J. Cheng, Chairman and Chief Executive Officer of ChipMOS said, "This is a successful event for us each year and gives us an opportunity to showcase our technology strength and impressive partnerships. As in prior years, our annual technical symposium is a great platform for participants in the IC industry to interact with one another and to share their unique experiences and technical expertise."

For the agenda of topics and speakers, on-line registration form and other information please visit our company website at http://www.chipmos.com.tw .

About ChipMOS TECHNOLOGIES (Bermuda) LTD.:

ChipMOS ( www.chipmos.com.tw ) is a leading independent provider of semiconductor testing and assembly services to customers in Taiwan, Japan, and the U.S. With advanced facilities in Hsinchu and Southern Taiwan Science Parks in Taiwan and 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
Dr. S.K. Chen
ChipMOS TECHNOLOGIES (Bermuda) LTD.
Tel: +886-6-507-7712
Email: s.k._chen@chipmos.com.tw

In the U.S.
David Pasquale
The Ruth Group
Tel: +1-646-536-7006
Email: dpasquale@theruthgroup.com