The color TV development meets the technical three-point quantum dot winning geometry?

Following the struggle between liquid crystal and plasma, TV display technology once again ushered in a new upgrade inflection point. On the one hand, it is an OLED TV represented by South Korea's LG. On the other hand, it is a quantum dot represented by TCL, Hisense, and Samsung. According to industry experts, this round of display technology upgrade will not only affect the direction of future TV development, but also determine whether China's color TV industry can truly surpass Japanese and South Korean manufacturers from the technical level.

Quantum dots first entered the color TV industry in 2014, followed by TCL, Changhong, Hisense, Samsung, LG and other domestic and foreign companies have launched Quantum Dot TV, because of outstanding picture quality, has gradually become the focus of industry attention. Recently, professional scholars are optimistic about the future development prospects of quantum dot technology, and once again triggered the industry's hot debate on the future development trend of color TV.

As the top chemist ranked eighth in the world by Thomson Reuters, and the second batch of national “Thousand Talents Plan” candidates, Peng Xiaogang, a professor at Zhejiang University and a senior expert on quantum dots, publicly told the media that quantum dots may be The best luminous material that humans have ever discovered. Quantum dots are solution semiconductor nanocrystals. Each small particle is a single crystal. It is only necessary to change the size of the quantum dot to obtain the desired color. The color purity is very high, and the stability of the crystal is also very high. This is other. Materials are difficult to match.

It is reported that color gamut is a standard that determines how much color human eyes can observe. According to the highest BT2020 standard, the color gamut of Apple's mobile phones is only about 50%, which means that half of the world's colors cannot be displayed, but quantum dots can achieve 100% color gamut and restore all colors that the human eye can perceive. . The improvement of the color gamut not only increases the color, but also greatly enhances the texture and three-dimensionality of the picture.

It is because of the various advantages of quantum dots that the mainstream color TV manufacturers at home and abroad are competing to deploy, such as TCL, Hisense, and Samsung. Peng Xiaogang said that the quantum dot display technology is mainly divided into two stages: photoluminescence and electroluminescence. TCL, Hisense, Samsung and other companies have already achieved the landing of photoluminescent quantum dot products, and their performance is already superior to that of existing TVs. And the second phase of electroluminescence will be the most likely next-generation display technology option for humans. "Electroluminescence quantum dots (QLEDs) will be self-illuminating like OLEDs, do not require backlights, and achieve flexible display and ultra-thin modeling, but there are no OLED defects." Peng Xiaogang said.

Concerned about the OLED and quantum dots that have attracted attention in recent years, Peng Xiaogang stated frankly: "OLEDs have inherent defects in organic materials, and quantum dots are more promising than OLEDs." He said that OLED's inherent instability leads to its longevity and light. There are currently problems that cannot be coordinated, such as efficiency, and the yield rate has not yet reached the commercialization requirement.

It is worth noting that with the help of quantum dot technology innovation, China Color TV is also expected to break the monopoly of Japanese and Korean manufacturers in display technology. At present, Chinese companies have taken the lead in the development of quantum dot display technology. TCL is not only the world’s first manufacturer of quantum dot color TVs, but also has been working on quantum dot material synthesis, quantum dot printing devices, and printing display technology. The five major parts of the G4.5 print display platform and the G8.5 print display platform are given priority in layout and balanced development.

In fact, the application of quantum dots is not limited to television. At present, quantum dots are beginning to be explored in the fields of solar cells, bio-medical markers, lighting, and display industries.

In addition, the quantum dot display technology has been focused on by the national "Thirteenth Five-Year Plan". The "QDs Luminescence Display Key Materials and Devices Research" has also been selected as a "Strategic Advanced Electronic Materials" key project. The Ministry of Industry and Information Technology has also announced the printing of quantum dots. Display is a key technology for the country’s key development. Some industry observers also pointed out that under the joint efforts of the state, enterprises, and R&D institutions, China's quantum dot display technology is expected to take the lead in achieving new breakthroughs globally. With the development opportunity of quantum dot technology, China's color TV industry is expected to overtake Japan and South Korea in display technology.

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