Some of you might have already heard about Quantum Dot Televisions showcased at CES 2015, Las Vegas. But how many of us really know what this tech is and how can it benefit the normal consumer like me and you.
A quantum dot (QD) is a nanocrystal made of semiconductor materials that is small enough to exhibit quantum mechanical properties.
It departs from classical mechanics primarily at the quantum realm of atomic and subatomic length scales. Quantum mechanics provides a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter.
How is Quantum Dot useful in TV Screens?
LCD screens in television displays need back-light to show images in full color. Light from the back lighting mechanism needs to be filtered to remove the blue tint in order to pass through the layer of LCD pixels. This filtering causes a bit of light loss or dimming, and hence owes to a higher power consumption for illumination mechanism underneath.
Also since the bright LCD back-light may bleed a little bit around the edges, blacks won’t look inky but rather grayish. Quantum dots could fix this problem; a layer of Quantum Dots above the LED back-light of a LCD screen could dramatically fine tune the light without dimming it.
All this can be achieved at one third of the cost of OLED, other wise known as Organic Light Emitting Diode displays which replaces LCD in many of the modern mobile phone displays by Samsung.
Why is that there are not many Quantum Dot TVs around?
Although Quantum dots TVs are cost effective, they cannot be scaled with the size. The technology is fairly new and needs a couple of years to reach consumer homes around the world.
With all its benefits, Quantum Dot technology is not as bright and vibrant as OLED screens and hence would make its way to budget TV screens. Flagships of different brands like LG will still continue to use OLED technology to power the 4K TVs.
How OLED wins over Quantom Dots?
Quantum technology is all about improving the light filters for LED back-lights and OLED doesn’t need back-lighting at all.
So to sum it up, we can safely assume Quantum Dots technology will head towards budget televisions and OLED will rule the flagships.