Apr 17, 2006

ESI Receives Follow-on Order from Taiwan's King Yuan Electronics Co., Ltd. for Its Model 9830 Semiconductor Link Processing System; Momentum Continues for Global Adoption of ESI's Semiconductor Link Processing Solutions

ESI Receives Follow-on Order from Taiwan's King Yuan Electronics Co., Ltd. for Its Model 9830 Semiconductor Link Processing System; Momentum Continues for Global Adoption of ESI's Semiconductor Link Processing SolutionsPORTLAND, Ore.--(BUSINESS WIRE)--April 17, 2006--ESI (Nasdaq: ESIO), a leading provider of world-class production laser systems for microengineering applications, today announced that it has received a repeat order from King Yuan Electronics Co., Ltd. (KYEC) for its Model 9830 semiconductor link processing system. KYEC -- Taiwan's leading integrated back-end service provider -- will utilize ESI's 9830 system to repair its most advanced DRAM devices. The ESI 9830 system enables global foundries to provide their customers with leading technology and cost-of-ownership (CoO) advantages for high-volume 300 mm wafer processing of memory and other laser-fuse applications.

KYEC's representative, Gauss Chang, explained, "The Model 9830 system was chosen because its technology is extendable for future production of advanced devices. By leveraging ESI's leading technology, we can achieve a better return on our investment and pass the cost savings on to our customers. We value our long-term relationship and will look to ESI to provide leading solutions for our DRAM applications."

"This order reinforces the rapid global adoption of our 9830 systems," noted Paul Kirby, business unit manager for ESI's Semiconductor Link Processing Group. "The requirements of new generations of high-speed chips are driving the industry towards tighter link pitches and new fuse materials, such as aluminum and copper. Chip manufacturers and foundries must find extendable technology to stay competitive. ESI's 9830 platform utilizes a 1.3 micron laser to provide the widest process window for aluminum and copper devices, and allows the upgrade to an ultraviolet (UV) laser for better ROI. We look forward to maintaining our long-standing relationship with KYEC as ESI continues to provide the broadest and most flexible cost-effective solutions for our customers worldwide."

About King Yuan Electronics Corporation Co., Ltd. (KYEC)

The company was founded in 1987, with headquarters in Hsinchu located near Hsinchu Science Based Industrial Park. KYEC is Taiwan's leading integrated back-end service provider in mixed-signal, logic and memory testing & pre-assembly. The company provides burn-in service, tape & reel, wafer grinding, dicing and waffle pack. As a value added subcontractor, KYEC delivers superior price performance ratios, effective cost reductions, and excellent engineering support. More information is available at www.kyec.com.tw.



About ESI

ESI is a pioneer and leading supplier of world-class production laser systems that help its microelectronics customers achieve compelling yield and productivity gains. The company's industry-leading, application-specific products enhance electronic-device performance in three key sectors -- semiconductors, components and electronic interconnect -- by enabling precision fine-tuning of device microfeatures in high-volume manufacturing environments. Founded in 1944, ESI is headquartered in Portland, Ore. More information is available at www.esi.com.

CONTACT: ESI
Craig Stoehr, 503-671-7061

SOURCE: ESI