Quantum Dots

1nm silicon crystal

A quantum dot is a crystal that is so small that it obtains special properties. Nanoco is a company that has learned to mass produce these dots in hopes of replacing TVs and lights. A special property that Quantum dots have is that dependent in their size, they emit different colors in the visible spectrum. This light produces very little infrared, unlike incandescent lights. 

Quantum

The major advantage of quantum dots is that they are tiny. They can be used to make TVs thinner and make lights consume less energy. As usual, the main problem to why quantum dot lights are not selling out is that they are expensive and hard to make. According to Nanoco, 1Kg of quantum dots is enough to make 50,000, 40" TVs.

The chart above shows a series of colors that quantum dots can emit, but it does not show white. It was discovered that crystals of cadmium and selenium that contain either 33 or 34 pairs of atoms emits white light. A nanocrystal this small is about 1/2 the size of the average nanocrystal but it is surprisingly easier to make than nanocrystals of a regular size. However, this is the case only for crystals of  33-34 pairs of atoms. This is how the crystals of this is earned the name the "magic size. 

Displays

Cathode ray tube TV

LCD TV

Though LCD TVs have a nice display...

OLED TV

It is clear that OLED TVs are even more high-tech. Quantum Dots could be incorporated into OLED TVs, making them  thinner, more energy efficient, cheaper (for the manufacturer), and just improve the technology over all.

Quantum dots can also be used to improve sensors, solar panels and make anti-counterfeiting technologies. 

Sources

http://www.nanocotechnologies.com/index.aspx

http://www.vanderbilt.edu/exploration/stories/quantumdotled.html

Resource: NANACO

Nanco is a British company that mass produces quantum Dots. By doing this, they hope to promote technological growth in common technology like TVs and lights.
Nanoco is located in the UK as well as in Japan and the United States