Intematix Corp of Fremont, CA, USA, which makes customizable, patented phosphors and remote phosphor components for LED lighting products and systems, says that US patent No. 8,597,545 was issued on 3 December by the US Patent and Trademark Office. The patent covers novel formulations for red-emitting, nitride-based phosphors and include products in the firm’s XR phosphor product family.
“This patent confirms XR red nitride phosphor as a proprietary Intematix innovation moving LED lighting to higher color quality and reliability,” says chief technology officer Yi-Qun Li. “We look forward to working with our customers on the next generation of LEDs with full-spectrum performance and long lifetimes.”
Intematix says that red nitride phosphors play a central role in extending the color range of LED applications like general lighting and displays including TVs, monitors and tablets. The firm adds that its red nitrides, combined with GAL (green aluminate) phosphors (arrangements covered by the firm’s previous patents, issued in July and September), enable near-perfect color rendering up to 98 CRI (color rendering index).
The XR red nitride also has color stability, with less than perceptible 2SDCM measured color shift in accelerated aging testing.
Such performance results in lighting applications with long-term color quality and consistency, claims Intematix.
