Press Releases

Major Japanese System Lsi Manufacturer Names Teres^TM Production Tool Of Record For All Oxide CMP Applications FREMONT, Calif., July 10, 2000-Lam Research Corporation (Nasdaq: LRCX) today announced that a major Japanese system LSI manufacturer has named Lam's Teres CMP system the production tool of record for all oxide CMP applications. Following an extensive six-month evaluation, Teres was selected by the customer for oxide CMP because of its demonstrated superior performance and reliability. The first production system shipped in June and will be followed by multiple production system shipments in the fourth quarter of 2000 and the first quarter of 2001.

The customer's decision to use Teres exclusively in current production for all oxide applications was based on the system proving its manufacturability for current-generation processes. In addition, Teres demonstrated next-generation copper and STI processing capability during the evaluation period. Teres' recognized capability for providing CMP technology for today as well as the next-generation demonstrates its potential to gain market share rapidly for all established applications.

Lam's Teres systems are replacing competitive CMP equipment that employs older technology. This customer already has extensive experience using Lam's Synergy^TM post-CMP cleaner, which is incorporated in Teres, because of the company's installed base of stand-alone Synergy systems. The partnership also includes an extensive installed base of Lam etch equipment.

This press release contains certain forward-looking statements, which are subject to the Safe Harbor provisions created by the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include, without limitation, anticipated product shipments under existing orders, shipment schedules, the prospective demand for the company's products, the future acceptance, performance and competitiveness of the company's products, and the technical and market transition to new processes. Such statements are based on current expectations and are subject to risks, uncertainties, and changes in condition and other risks detailed in documents filed with the Securities and Exchange Commission, including specifically the report on Form 10-K for the year ended June 30, 1999, and the Form 10-Q for the quarter ended March 26, 2000. The company undertakes no obligation to update the information in this Press Release.

Lam Research Corporation is a leading supplier of front-end wafer processing equipment and services to the worldwide semiconductor manufacturing industry. The company's common stock trades on the Nasdaq National Market under the symbol LRCX. Lam's World Wide Web address is http://www.lamrc.com.