For more than four years, traditional TV companies have still not been subverted. On the contrary, the once-thinking Internet TV brands have been under pressure during the panel price increase cycle. In addition to the scramble for sales, the lip-and-gun battle for future display technology is another major spectacle in the color TV industry. The battle between the OLED camp and the QLED camp has become a daily topic in the color TV industry. With the escalation of quality consumption, consumer demand for television experiences is increasing. In particular, the technical dispute between OLED and QLED has also entered the white-hot stage. This game, which is the future of mainstream TV display technology, has also attracted a large number of TV manufacturers. On the one hand, color TV companies represented by LG, Skyworth, etc. continue to exert their efforts in OLED display technology, allowing OLED TVs to be quickly marketized. At the beginning of 2016, there were only 5 global OLED TV manufacturers. By 2017, 13 TV manufacturers worldwide have launched OLED TVs, including Chinese manufacturers. On the other hand, manufacturers represented by Samsung, TCL, etc., mainly promote quantum dot technology. NPD DisplaySearch predicts that the annual growth rate of quantum dot TVs in the Chinese market will reach 100%, which is expected to grow from 600,000 units in 2016 to 1.2 million units in 2017. “From the development history of the color TV industry, technology contention has always existed.†Fan Zhijun, general manager of Shanghai Suning, stated that at every stage of development of the color TV industry, people have different opinions on different technology applications. For example, in the early stage of industrial development, the industry once disputed whether it was the use of rear projection technology or large-screen technology. Finally, it ended up with the rear projection exit. Later, as LCD TVs gradually solved the problem of yield, plasma TVs were also eliminated. Nowadays, in the “post-LCD eraâ€, the television industry is facing new controversy – in the end it is to choose OLED or QLED to replace LCD screens. Ultimately, whoever is the winner of the market, it depends on the choice of consumers. Samsung Electronics took off a new wave of copywriting offensive on Tuesday. On the one hand, LG's OLED, the main rival to attack, is not suitable for TV panels. On the other hand, it is better to promote its own QLED (Quantum Dot LED). Next-generation TV display technology, Samsung and LG's focus is different, the two companies belong to the QLED and OLED camp. Samsung pointed out that the burning screen problem is a fatal injury to OLEDs. It is only suitable for use in mobile phones with short life cycles. TVs with longer service life do not apply. Samsung said that the reason why OLED panels have burned screens is due to the use of organic materials, such as the oxidation of juice over time. In contrast, QLED panels use semiconductor nanocrystals, which have the advantage of durability and are close to the properties of television. OLED TVs also have problems with insufficient supply and high prices. Ross Young, executive director of display research organization DSCC, once predicted that QLEDs will become mainstream for next-generation TV screens because LG Display's OLED production capacity cannot meet market demand and it is difficult to suppress them. Price. LG did not directly respond to Samsung's documentary offensive but emphasized that OLED TVs ranked first among consumers in 11 countries around the world, demonstrating that OLED TVs have market competitiveness. What is quantum dot technology Quantum dots in QLEDs refer to artificial nanocrystals with semiconducting properties that can be used to enhance brightness and color performance in still and video images displayed on LCD screens. Quantum dots perform image display by emitting particles (like phosphors on a plasma TV). When they are struck by photons from external sources, each quantum dot emits a color with a specific bandwidth (determined by the quantum dot size). Larger quantum dots emit light that is biased toward red, and as the quantum dots become smaller in size, the light they emit tends to be green. When quantum dots of a specified size are grouped together in a structure and combined with a blue LED light source, they can emit the entire color bandwidth required for television viewing. Using the properties of quantum dots, TV makers can increase the brightness and color performance of LCD TVs to exceed current performance. The figure above shows the structure of quantum dots (right side), the imaginary example of the relationship of the color emission characteristics of quantum dots observed according to the size of the quantum dots (left side), and the method for actually manufacturing quantum dots. QLED VS OLED The OLED camp believes that OLED (Organic Light Emitting Diode) technology has achieved the transcendence of liquid crystal, not only higher definition, more vivid colors, greater contrast, but also because the self-emission properties do not require a backlight, so OLED TVs are more than LCD TVs. Thin and light. The most important thing is that as a flexible display technology, OLED has achieved revolutionary curling and folding; however, in the view of anti-OLED camps, OLED TVs suffer from “burningâ€, short life, and low yield. What is important is that the OLED industry chain is not perfect, the panel supply is tight, and the product price is high. The QLED camp believes that QLED (QDs) technology has full color gamut display capabilities, with features such as higher color purity, powerful color reproduction, and high color accuracy; anti-QLED camp believes that true QLEDs can achieve self-luminescence, but now The stage of QLED TV is just photoluminescence. It belongs to "quantum dot backlight LCD TV" and is not yet a level with OLED technology.
