Quantum Dots Are Behind New Displays

13 June 2012—Liquid crystal displays dominate today’s big, bright world of color TVs. They are inefficient, though, and don’t produce the vibrant, richly hued images of organic light-emitting diode (OLED) screens, which are expensive to make in large sizes.

But a handful of start-up companies have been plugging away at another display technology that could enhance LCDs and unseat OLEDs: quantum dots. These light-emitting semiconductor nanocrystals shine pure colors when excited by electric current or light and promise rich, beautiful displays that would be inexpensive and easy to manufacture…..

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