IP, Reports & Roadmaps | Mar 26, 2008

Intematix Adds Latest Phosphor Patent Award to Growing IP Portfolio

Intematix Corp. a leading innovator of advanced materials solutions and provider of patent-backed merchant phosphor products for solid state lighting applications, today announced the addition of US Patent Number 7,311,858 for silicate based yellow-green phosphors to its growing intellectual property portfolio. Yellow-green phosphors are typically combined with a blue LED emitter to produce energy efficient solid state white lighting in a growing variety of applications.

According to Intematix co-founder and Display & Lighting Business Unit General Manger, Dr. Yi-Qun Li, co-inventor of the patented phosphor, "This silicate-based approach to phosphor development provides a fundamental material advancement which has allowed Intematix' phosphor products to leapfrog past conventional YAG solutions in white light efficiency. The final issuance of the '858 patent has validated this key innovation that enables a variety of merchant phosphor solutions to the LED-based lighting marketplace."

LED-based, or solid state, lighting is leading the way into the newest energy efficient lighting technologies, and offers the promise of affordable high quality light becoming available to more people across the globe. Combining a blue LED with yellow phosphor is the most cost-effective method of producing white light from a single LED package. The phosphor formulations covered by Intematix '858 patent can be tuned to maximize the output for specific emitters and packaging materials by varying a combination of covered divalent metals and halogen dopants. The result is a series of yellow-green phosphors that cover an emission spectrum from 500nm to 575nm. The patent also covers those yellow-green phosphors in compositions that include specific orange or red phosphors that can be used to provide the additional emission needed for achieving high color rendering and high NTSC values. In all cases, the phosphor compositions boast increased stability and efficiency at the higher temperatures required of the more powerful LEDs needed for general purpose warm white and today's newest LCD backlighting applications.

Concluded Dr. Li, "As LED-based technologies move from specialty applications to wider adoption in general purpose lighting the pace of innovation will continue to increase. The availability of patent-backed phosphors to the marketplace, without the pre-condition of a technology license or the requirement to purchase a specific manufacturer's LED chip, will be an important part of this market's success."

About Intematix Corporation:
Intematix Corporation provides advanced materials solutions and services for worldwide manufacturers of high-performing electronic systems and products. The company blends its proprietary combinatorial discovery techniques with unmatched scientific expertise to rapidly discover, develop and deliver an unprecedented selection of new enabling materials for a myriad of applications. Intematix offers production availability of key patent-backed phosphors for solid state lighting, security and anti-counterfeiting applications. Headquartered in Fremont, Calif., Intematix maintains R&D, manufacturing, business and support operations in the U.S. and Asia. To learn more about Intematix, please visit www.intematix.com

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