Authoritative Institutional Color Experiments Reveal: "Quantum Dot TV" Has False Names
In the history of the improvement of LCD TV picture quality, researchers have made a lot of efforts. In order to improve the color performance of LCD TVs, R&D personnel based on the nature of passive light emission of LCD TVs started with backlights and introduced a wide color gamut backlight and quantum dot backlight. They used red and green fluorescent materials and red and green quantum dot materials respectively. The liquid crystal module provides backlight with a wider color gamut, which greatly enhances the color gamut of the LCD TV. However, these two technologies fail to improve the color consistency of the primary colors. That is, the three primary colors of red, green, and blue cannot reach the wavelength of 700 nm. , 546.1nm, 435.8nm or concentrated, so no matter how high the color gamut, the performance of the TV screen is still flawed.
According to Liu Buchen, a veteran home appliance expert, the so-called “quantum dot TV†currently on the market is accurately called “quantum dot backlight LCD TVâ€. The main principle of quantum dots applied to display technology is to excite quantum dot crystals of different sizes in a quantum dot fluorescent tube by using a pure blue LED light source, so that pure red photons and pure green photons are released, and the remaining pure blue light is projected onto the imaging system. And imaging. As one of the main promoters of domestic quantum dot television, TCL has given such official statement to quantum dot TV: Quantum dots are the best LCD TV backlight technology at present, quantum dot TV is based on LCD panel.
In other words, quantum dot technology is essentially one of many color gamut enhancement technologies. Like RGB LED and wide color gamut CCFL, it belongs to the wide color gamut backlight technology, but it makes the LCD TV look more colorful. Nothing more.
More importantly, the real Quantum-dot TV should be electroluminescence. At present, this kind of prototype product using liquid crystal backlight is just a liquid crystal TV under the hood of the "quantum dot" concept. According to Professor Peng Xiaogang of Zhejiang University, quantum dot technology If you want to develop to an ideal state, it will take at least three to five years. In this context, the LCD TV market is weak and technological innovation is sluggish. Many industry experts have stated that they need revolutionary new technologies to activate the market and lead LCD technology iterations.
The "QD TV" emerged from the anxiety of the industry that called for new technologies. With large-scale, large-scale marketing campaigns, it became the focus of the industry. However, after many consumers have purchased QD TVs, they find that the experience is far less than that claimed by the sales staff. Problems such as overly bright colors and impure images have become a lingering affliction. According to experts, QD TV is easily mixed with other color wavelengths in the display, and the colors appearing tend to be yellowish, while oversaturated colors and excessive brightness damage the eyesight. In other words, although QDTV caters to the audience's demand for stunning and beautiful pictures, the cost is endless health risks. In this regard, it is believed that everyone can distinguish between ignorance and ignorance.
The "artisan spirit" that prides itself on the manufacturing industry means that the willingness to sit on the bench and concentrate on the pursuit of perfectionism, but in China's television industry, the long-term delay in innovation has led some manufacturers to see "business opportunities": People want new technologies. Then we have to pack new technologies. The time is short and the market is quick. Why not? As a result, numerous new television concepts such as Quantum TV have flooded the market and created a false prosperity.
The contrastive experiment of the Color Institute of Tsinghua University on quantum dot LCD TVs and ordinary LCD TVs further revealed the essence of technical gimmicks, allowing consumers to realize that it is not marketing and promotion but a solid technology research and development that leads to a better experience. Quantum TV can be described as putting the cart before the horse. However, relevant experts also expressed optimistic expectations for the prospects of the industry. As experimental research results are more widely recognized by academics and industry, the future of television display technology will usher in a new round of technological trends.
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