CES: Sony Intros Modified LCDs with Quantum Dot Technology

Sony demonstrated some impressive new technology at this year’s CES in Las Vegas. The company is using “nanoscale particles called quantum dots to significantly improve the color of some of its high-end Bravia televisions,” writes Technology Review. The particles increase the range of colors that an LCD TV can display by 50 percent.

This is the first time that quantum dots will be used in a mass-produced electronic device. “Quantum dots emit very specific wavelengths of light. And the precise colors they emit can be tuned by changing their size,” notes the article.

“In LCD televisions, each pixel is illuminated from behind by a white backlight, and different colors are created by changing the amount of light allowed to pass through three different filters — one red, one green, and one blue,” explains Technology Review. “LCDs originally used fluorescent bulbs as the backlight, but now most use LEDs (marketers call these products LED LCDs). QD Vision uses quantum dots to enhance the LED backlight.”

The QD Vision tech eliminates the white backlight. “It starts with a conventional blue LED, which produces pure blue light. But that blue light also stimulates two kinds of quantum dots that emit pure green and pure red. With this approach, the only wavelength that passes through the red filter is the pure red emitted by the red quantum dots.”

While Sony has yet to release pricing for the modified LCD TVs (which will carry the brand “Triluminos”), the company is pairing QD Vision’s technology with other features including 3D and 4K. Additionally, other quantum dot displays are in development, including a notebook announced last year by Nanosys.

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