Intematix’s Red Nitride LED Phosphor to be Its 18th U.S. Patent

Intematix Corporation announced that the United States Patent and Trademark Office (USPTO) has issued a notice of allowance for claims on its patent covering red nitride phosphor compositions used in LEDs. Intematix expects issuance of the patent by the end of 2012.

Intematix’s patent application number 12/632,550, entitled “Nitride-based Red Phosphors” is expected to be the 18th U.S. patent issued to Intematix in the area of LED phosphors and the 71st U.S Patent overall.
“Our novel chemical formulation lowers the concentration of oxygen impurities in the material structure, leading to improved reliability under high temperature and humidity conditions,” explained Dr. Yi Qun Li, Chief Technology Officer at Intematix. “This design increases light output efficiency and produces longer emission wavelengths when powered by the blue light from the LED chip.”

Red phosphor technology plays a fundamental role enabling high quality LED lighting with high CRI. Due to the high thermal stability of Nitride technology in particular, LEDs may operate at higher temperature, power and light output per unit, lowering the costs of lighting. Compared with other phosphors in the red emission region, LED designers can make LEDs with higher light output efficacy and with CRIs as high as 98 when combined with other phosphors offered by Intematix. Red phosphor also extends the color gamut performance of displays like flat-panel TVs.

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