Posts tagged LED
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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NanosysQuantum Dot, LED
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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