Nanocrystal technology transforming TV technology
By Richard Holdcroft , 18.12.2015.
Scientists working in the field of nanotechnology deal with objects so vanishingly small, it’s hard to imagine them. Sizes here are measured in nanometres. To put this in perspective, the head of a pin is a million nanometres wide.
At this level, the laws of quantum physics come into play, making it possible to tackle problems that cannot be solved at conventional scales.
One example of this is Samsung's recent introduction of nanocrystals in its cutting-edge SUHD TVs, which has resulted in unbelievable picture quality.
The LED backlighting used in some modern televisions can generate a picture that appears washed out and cool, even cold. This is often because the white LED light used to provide the brightness to the picture is skewed towards the icy blue end of the spectrum.
The LED bulb is covered in a yellow phospher which then produces a blue light, which reduces brightness. The new Samsung SUHD TVs have removed yellow phosphor which allows for brighter imagery.
Typically, LED TVs shine light through colour filters called sub-pixels, which are electrically controlled to produce the rainbow of colours that make up your TV picture.
A secondary advantage of this system is that, because the colours generated by the nanocrystals are so accurate, less light is wasted in the sub-pixel filters, and the resulting picture has wider colour gamut.
In the past, nanocrystals suffered from one serious problem that restricted their popularity: they were largely made from cadmium, an extremely toxic metal.
However Samsung now uses a new method to produce environmentally aware indium/phosphorus nanocrystals for its SUHD TV range.
The SUHD range also includes other new technologies such as Precision Black Pro 1 and Peak Illuminator, which can automatically analyse the brightness of images to help produce darker blacks and elevated brightness where required. The result is the best Samsung TV ever.
"It's on a completely new level to anything we have ever produced," said Philip Newton, corporate vice-president of Samsung Electronics Australia.
Compared to Samsung's older televisions, the SUHD screens deliver significantly greater contrast and 64 per cent more colour expression, he says, with up to 2.5 times the brightness.
Newton says that generally speaking, Australian consumers upgrade their televisions every five to six years. But that cycle may well be shortened once the advances in the SUHD range become apparent.
1. Performance may vary depending source content.
The opinions expressed by the writer in this article are the opinions of the writer and should not be taken to reflect the views or opinions of Samsung Electronics Australia or its affiliates.