Electronic enthusiasts eight o'clock: After the price, process and configuration, content and ecology, what will be the next development direction of the TV industry?
Samsung, LG, Sharp and other industry giants have recently given the answer - display technology. After all, no matter which screen is big or small, what people end up with is the visual experience.
So a few quaint terminology has become a hot word that people are familiar with. First, LCD (liquid crystal display), then OLED (organic light-emitting diode), and now, QLED - quantum dot display technology.
Or the best luminescent material The quantum dot used in QLED is a semiconductor nanocrystal. When stimulated by light or electricity, the quantum dots emit colored light. The color of the light is determined by the composition and size of the quantum dots. Therefore, high-peak solid color light including red to blue light can be obtained by changing the quantum dot shape.
Quantum dot technology first appeared in the late 1970s and was discovered when Western countries wanted to find an efficient photoelectric conversion technology during the oil crisis. At present, quantum dot related research is a very popular field in the world, and the number of papers published in one year is tens of thousands.
"Quantum dots are probably the best luminescent materials discovered by humans in history." Peng Xiaogang, a professor of chemistry at Zhejiang University, said that quantum dots are solution semiconductor nanocrystals. Each small particle is a single crystal, and the size is only a hair. One or so. Only by changing the size of the quantum dots, the desired color can be called up, and the color purity is high, and the stability of the crystal is also high, which is difficult to match with other materials, and does not need to worry about the service life.
The color gamut is the standard that determines how much color the human eye can observe. "According to the highest BT2020 standard, Apple's mobile phone is only about 50%, which means that half of the color can not be displayed, but the quantum dot can achieve 100% color gamut, restore all the colors we can perceive." Peng Xiaogang said.
Jump from the lab to the marketQuantum dot TV has become a representative civilian product of nanotechnology.
In the TV market, Quantum Dot Technology TV entered the public's field of vision in 2014. Through the continuous product of Samsung and other brands, after nearly three years of development, it has become an important category in the middle and high-end market.
TCL is one of the representatives of the domestic home appliance industry in this field. Recently, TCL released the inorganic three-color quantum dot TV XESS X2/X3 series, which uses a new generation of inorganic three primary color quantum dot display materials.
Since the introduction of quantum dot TV in 2014, TCL has officially started the market-based testing of quantum dots in China. In 2016, it launched QUHD quantum dot TV to promote the commercialization, commercialization and marketization of quantum dots. According to the results of the first public inspection of the Tyrete laboratory, the core indicators of QUHD TV are excellent, especially the color gamut coverage is the highest value in the large database, the peak brightness exceeds the industry average of 77.9%, and the color brightness exceeds the industry average of 26%.
According to Wang Cheng, vice president of TCL Group, the new generation of inorganic primary color quantum dot display materials used by TCL is only one ten-thousandth of the volume of organic light-emitting materials, achieving a breakthrough in color processing from micron to nanometer.
"The advantages of the new generation of quantum dots can be summarized as 'high, pure, long'. The 'high' is the color gamut, the color gamut coverage is 110% NTSC; the 'pure' is pure color, the color purity is more common. The LED is about 58.3% higher and can show the natural color. The 'long time' is the color. The new generation of ultra-thin quantum dots is a stable inorganic nano material, which can ensure the color does not fade, and the color lasts for 60,000 hours." Wang Cheng said .
Industry chain skill decision seatWith the maturity of quantum dot technology, quantum dot TV has broken the traditional image quality from many dimensions such as ultra-high color gamut, color reproduction and color purity, showing the potential to become the future display technology.
From NPD Display Search, quantum dot TV will grow at an annual growth rate of 100% in China, and is expected to grow from 600,000 units in 2016 to 1.2 million units in 2017, and will increase from 3 million units worldwide. To 6 million units.
At present, domestic and foreign TV companies have started to smoke in the layout of quantum dot technology, and the price is the core issue of its marketization.
In the new product released this time, TCL directly “decreased†the pricing of quantum dot TV to the acceptance of ordinary consumers. Wang Cheng revealed that the third-generation quantum dot TV has reduced the thickness on the basis of improving the image quality, and also realized cost control through technological improvement, bringing the price of quantum dot TV to the mainstream price segment for the first time.
The reason why TCL can launch a new product cluster is that it has a trump card in its hand - Huaxing Optoelectronics.
TCL's Huaxing Optoelectronics currently has three LCD panel production lines covering a wide range of TV panels and small to medium size mobile terminal panels. Huaxing Optoelectronics ranks among the first camps of LCD panels in the world, and makes TCL the only color TV company in China that completes the vertical integration of the industry chain, so that the supply of core components is no longer subject to people, ensuring the global competitiveness of enterprises.
Even with a view to the global market, there are only three color TV companies with vertical integration of the industry chain. As the first company in China to produce quantum dot TV, the shipment of TCL products in 2016 exceeded 20 million units. In the current high-end color TV market with the greatest opportunity, it is occupying the share of the Japanese and Korean giants.
However, foreign giants such as Samsung are also accelerating the pace of research and development of quantum dot technology. Not long ago, at the Samsung China Forum 2017 held in Shanghai, Samsung displayed dozens of different types of TVs, including QLED Photonics TV 4 series, 8 models, spanning 55 inches to 88 inches, etc. Size segment.
China is no longer following the trend"The display industry from CRT to LCD, to OLED, the core technology has been in the hands of foreign giants, electroluminescent quantum dot TV is more completely dominated by Korean companies." Peng Xiaogang said that at present, China's imported backlight module has a very large Foreign exchange consumption.
"On the first generation of photoluminescent, quantum dot TV, China is not behind others. If the Chinese forces unite to complete quantum dot technology, it will break the monopoly of foreign countries." Peng Xiaogang said.
Quantum dot display technology is mainly divided into two stages of photoluminescence and electroluminescence. Based on the first stage of photoluminescence, its performance has been superior to existing TVs, regardless of color, power consumption or overall effect. A breakthrough was achieved. The second phase of electroluminescence, Peng Xiaogang bluntly will be the most likely next-generation display technology option for humans.
Peng Xiaogang said that quantum dot technology is beginning to be applied and explored in the fields of solar cells, bio-medical marking, lighting and display industries, and has broad prospects. For example, in the field of biomedicine, different colors of quantum dots can be used to simultaneously detect multiple pathogens or pesticide residues, and quantum dots can be used in the lighting industry to greatly improve luminous efficacy.
At present, quantum dot display technology has been paid attention to by the national “13th Five-Year Planâ€. In the national key R&D plan publicized by the Ministry of Science and Technology, Peng Xiaogang’s “Study on Key Materials and Devices for Quantum Dot Luminescence Display†was selected as “strategicâ€. The key special project of advanced electronic materials, the Ministry of Industry and Information Technology has announced that quantum dot printing is the key technology for the country's key development. In the new wave of technology, China will not "follow" as it has in the past.
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