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LED

Photonics Spectra: Quantum Dots driving LED materials revolution with 27x growth

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Photonics Spectra: Quantum Dots driving LED materials revolution with 27x growth

Quantum dots are another new downconversion material. Measuring a few nanometers across, quantum dots have a size-dependent emission with a half width of only nanometers. Along with efficiencies that run 97 percent, such attributes make them useful in LEDs.

Nanosys Inc. of Milpitas, Calif., makes quantum dots, putting them into polymer films that can be dropped into the standard LED manufacturing flow. The company’s red- and green-emitting quantum dots improve LED efficiency, thanks to a full width half maximum under 30 nm. “That enables us to match the spectrum of the backlight to the color filters. That means we’re not spending any energy generating light that doesn’t go through,” said Jeff Yurek, product marketing manager.

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Quantum Dots Enable High Dynamic Range TV

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Quantum Dots Enable High Dynamic Range TV

On the show floor at SID 2014, Nanosys' 10-foot-by-10-foot booth won a Best in Show award in the small exhibit category.  Nanosys, which makes the quantum dots used in 3M's quantum-dot enhancement film (QDEF), was showing two TV sets side-by-side: one was a conventional LCD TV; the second incorporated both QDEF and Dolby's HDR technology, and the image was compelling. But what does QDEF have to do with HDR?

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CNET: Nanosys promises better color in tablets, TVs

CNET: Nanosys promises better color in tablets, TVs

A Silicon Valley company is promising to bring more color to LCDs.Nanosys says it has developed a technology that helps deliver 50 percent more color than what's currently available on existing LCD panels. According to the company's site, "that means richer, more viscerally alive reds, a deeper palette of greens, and vivid blues." Most importantly, the company says it can deliver better color with technology already being used in tablets, televisions, and other products.

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Technology Review: Quantum Dots Give Notebooks a New Glow

Technology Review: Quantum Dots Give Notebooks a New Glow

A layer of nanomaterial that gives a liquid-crystal display the rich range of colors usually possible only with more expensive technologies will be commercialized later this year by the materials giant 3M and Nanosys, a private company in Palo Alto, California. Nanosys representatives say they are in talks with major display manufacturers to adopt the quantum-dot films, and that they will be in a 15.6-inch notebook computer available next year. continue reading

Reuters: Search for rare earth substitutes gathers pace

Reuters: Search for rare earth substitutes gathers pace

Rare earths, found in everything from Apple Inc's iPhones to energy-efficient lighting and wind turbines, gained global attention last year as China, which produces more than 90 percent of global supply, repeatedly clamped down on exports. Prices of the individual oxides, alloys and metals soared. Nanosys CEO Jason Hartlove said that even at less-inflated rare earth prices, the cost to make light-emitting diode (LED) products using yttrium, a rare earth, is twice that of Nanosys lighting -- and LEDs are expected ultimately to replace standard light bulbs once they are competitive on price.

"We have an ambition to move into general illumination, probably in the next year or so," said Hartlove.