To popularize a single piece of knowledge, LED/QLED/Quantum/Nano Color are LCD TVs, while OLEDs are self-illuminating organic TVs. These are two major categories. The current OLED TVs do not have an advantage in color compared with high-gamut LCD TVs. In particular, the quantum dot TV color gamut can reach NTSC 110%, while the OLED color gamut is about 100% NTSC.
On the expression of color, but also look at high color LCD TV. Quantum dots and Nano Color technology are two of the most popular high color gamut technologies. Quantum dot technology is more familiar with the principle is to add a layer of quantum dot material in the backlight to enhance the LCD TV backlight color gamut.
The IPS Nano Color technology recently appeared on the market is also a new high color gamut technology. Compared to quantum dot television (QLED), Nano Color technology moves the nanometer material layer from the backlight to the screen surface, which also achieves the high color gamut effect of quantum dot TV.
Another difference between Nano Color and Quantum Dots is that they use finer nano-optical materials. The particles of the general quantum dot material are between 2 and 7 nanometers, while the Nano Color technology uses a uniform material with a diameter of 1-2 nanometers, which makes the optical enhancement characteristics of the color enhancement layer more obvious.
It also brings a high color gamut effect, but Nano Color also has a feature that is high gamut performance at a wide viewing angle. The general high color gamut display effect can only be experienced in the frontal small viewing angle range, and the side view will produce color cast. The Nano Color technology can bring high color gamut performance to a wide viewing angle of 180 degrees, allowing users to enjoy rich and pure colors at any angle.
At present, LeTV Super TV Unique65/55 is the TV with IPS Nano Color technology, providing the most abundant large-screen color. More than just a whole new generation of color technology, the Unique65/55 is also equipped with an extremely colorful engine that restores lost colors during video compression and transmission. At the same time, the quality of the Unique65/55 was tuned by the Hollywood Dolby Laboratories. After being certified by Dolby Vision, the highest dynamic range, it can be said that in the size range of 55-66 inches, it is difficult to find TVs of the same good quality. Match it. (Squid tail)
Who is better for the color volume Q and O?
Quantum dots, as mentioned above, are divided into electroluminescence and photoluminescence. At present, the photoluminescence principle adopted by QLED QD TV can make the brightness of the TV very high by increasing the power consumption of the LED and adopting a more bold backlighting technology. Of course, the current QLED is still essentially LCD.There are two kinds of OLED TVs, one is called RGB OLED, and the other is called white OLED. RGB OLEDs cannot be made large because of mass production. White OLEDs are the technologies that you can see on the market for OLED TVs.
However, active light emission is faced with a phenomenon in which a material gradually depletes with use. If a high luminance is maintained for a long period of time, then the loss of organic materials is very large and the service life will be greatly shortened.
In the display area, the use of quantum dot materials has four unique advantages.
1, longer life, lower cost QLED uses a mature inorganic materials, fluorescent longer life, do not worry about product life.
For example, the lifetime of quantum dot materials used by TCL can reach 60000 hours, while OLEDs can only reach 30,000 hours.
2, better color performance, wider color gamut, more pure color Quantum dot technology without increasing the thickness of the CF film, the LCD color gamut improved by 38%, color gamut can easily reach the color standard BT708 157% or more.
In the case of television screens, the wider the color gamut, the richer the range of colors that TVs present and the more they reflect the true nature of things. Moreover, with the help of quantum display materials, the spectral peaks corresponding to the three primary colors of red, green, and blue displayed on television screens are clear and have no overlap with each other, resulting in the purest color expression.
With TV screens using quantum dot materials, the color performance of TVs we see will be more realistic.
3, energy-saving Quantum dot display materials can save energy consumption while significantly increasing the brightness of the LCD. Under the traditional technology, the situation of high color gamut and low brightness has always existed. To increase the brightness, the number of LED chips must be increased to increase energy consumption and cost. Quantum dot technology can effectively solve this problem and the QLED luminous rate will increase by 30% to 40%.
4, high yield, cheaper prices The production process is relatively simple, with advantages in large-scale production.
Moreover, quantum dots have not only brought disruptive improvements to display technology. At the same time, it also has broad application prospects in the fields of biological sciences, lighting, food testing, and solar cells. Even rated as the best luminescent material that humans have discovered so far.
It is understood that electroluminescent quantum dot technology is under study. Once successfully developed, Quantum TV will become a flexible medium in the future, and it can also be curled. Quantum dots will be made into flexible screens for printing and will become a reality.
The Ministry of Science and Technology's "Thirteenth Five-Year Plan" has made quantum dot printing display a key technology. (Xiafan Technology)
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