Better than 4K? Quantum Dot 4K
Improving energy efficiency, brightness and image quality.
The career of the manufacturers of televisions by adding new functions is incessant and sometimes seems to march at the speed of the same energy that emerges from their screens: light speed.
Global electronics enterprises already incorporate a new technology that provides a qualitative leap to the LCDs of TVs: the so-called 'Quantum Dots' (QD).
This means the screen increases the amount of colors and their sharpness, brightness and realism, to offer an exceptionally bright and vibrant image with a substantial improvement in black levels and details of shadows according to experts.
It's already available!
This technology has been unveiled at international fairs such as CES, Las Vegas, and IFA in Berlin, and there is little left to popularize in many homes.
“The first 'quantum dot' television(QDTV) was marketed by Sony in 2013, and there are now many more models with the quantum dot system on the market, including Samsung QLED and Hisense ULED," says Brian Mui , a spokesman for Nanosys, a pioneering company and leader in the development of this technology for monitors.
How does it work?
Quantum dots are man-made crystals, so small that they cannot be seen with a conventional microscope, reports this company. They are about 60 million times smaller than a tennis ball and about 10,000 times narrower than a human hair.
The size of these nanocrystals gives them the ability to convert light into almost any color of the visible spectrum in the region of the set of electromagnetic waves that the human eye is able to perceive, with a very high purity and energy efficiency.
"QDs are tiny semiconductors that can convert incoming energy; are photoactive because they absorb and re-emit light in pure colors,"
adds the firm.
"We can control the color of light emitted by a quantum point by changing its size," according to the company, which explains that larger QDs emit longer wavelengths of light, such as red, while smaller ones emit lengths of shorter light wave, such as green.
Compatibility with LCD
This ability of quantum dots to accurately convert and adjust a spectrum of light makes them ideal for liquid crystal displays (LCDs), used in smartphones, electronic tablets and televisions, according to the Californian manufacturer, who adds that "with this technology we can make all the colors we see perceive them even better. "
According to Nanosys, so far, the white light with which the LCDs work was not very good, as it contained a lot of blue and yellow, but not much red or green.
"For that reason, the screens had to spend a lot of energy to generate enough red and green to give brilliance to the image and also to produce primary colors," he says. The precise spectrum of light created by QD.