ESI to Exhibit at SEMICON West in San Jose.

Business Editors/High-Tech Writers

SEMICON West 2003

PORTLAND, Ore.--(BUSINESS WIRE)--July 9, 2003

Electro Scientific Industries, Inc. (Nasdaq:ESIOE) today announced that it will attend the semiconductor manufacturing exhibition held July 16-18 in San Jose, California,

This year's theme, "Navigate to Higher Productivity," will be demonstrated in four semiconductor application areas: Laser fuse processing, thin-film trimming on silicon, machine vision and laser microvia drilling for integrated circuit packaging. Stop by ESI's booth, 11017, and meet with our technology experts.

Barry Harmon, president and chief executive officer, and Michael Dodson, vice president of administration and chief financial officer will be in attendance at the show on July 17-18.

About ESI

ESI, headquartered in Portland, Oregon, supplies high-value, high-technology manufacturing equipment to the global electronics market. Using its expertise in laser/material interaction, small parts handling, machine vision and real-time control systems, the company enables the production of leading-edge products for customers in the semiconductor, passive component and electronic interconnect markets. ESI's web site is http://www.esi.com.