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Chapter 213 Black technology materials for mobile phone screens

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    Chen Yao drove his car to Shenmo Chemical Materials Company.

    After he parked the car, opened the door and got out of the car, he received a text message. Chen Yao took it out and took a look.

    It was sent by Yunzi, who said she was willing to accompany her home for the New Year.

    Chen Yao smiled knowingly. Before going home to celebrate the New Year, he had to do one thing and speed up the research and development of mobile phone screens.

    Legend makes mobile phones. If it wants to become popular in the fierce domestic market, it must make a breakthrough in screen technology.

    The team is doing research, but it has encountered a big technical bottleneck and it is difficult to break through. Chen Yao must participate at the critical moment.

    Shenmo Chemical Materials Company sounds like the name of a novel. Chen Yao usually likes to read novels, so he gave the company this name.

    This company is indeed worthy of its name. In less than a year since its establishment, it has become the largest photoresist manufacturer in China!

    In the past, this key material for the production of mobile phone chips was monopolized by Japanese companies. It was Chen Yao who led the team to break the Japanese monopoly and take the core technology into his own hands.

    At this rate, it is only a matter of time before Shenmo Chemical becomes the world¡¯s largest photoresist manufacturer.

    But Chen Yao is not satisfied with this. In addition to photoresist, some key chemical raw materials must also be made by himself. Frankly speaking, the gap between domestic research and development of raw materials and daily production is too big.

    Take the glass for mobile phone screens as an example. Most mobile phone manufacturers in the world use Corning¡¯s Gorilla Glass. The glass they make is better in terms of hardness, strength, and light transmittance.

    This is not a simple production process issue. Our research and development in materials science is at the forefront of the world.

    Chen Yao walked into the company, put on a mask and a white lab coat and walked into the laboratory.

    chemistry lab.

    Zhou Weiming, who was also wearing a mask, stood in front of a vacuum glass tube and observed the chemical reaction of ito materials in a high-temperature environment.

    Ito material is used in almost every mobile phone screen. It is just under the glass of the mobile phone panel and is used to achieve touch sensing.

    Chen Yao stood beside him and asked: "How is it? Is there any progress?"

    Zhou Weiming exhaled: "Yes, but the progress is slow."

    ??Mobile phone screens are really not something that ordinary companies can do well. Most mobile phone manufacturers purchase other suppliers.

    But when Chen Yao makes mobile phones, he has to develop them himself.

    The difficulty of this can be imagined.

    At the beginning, Chen Yao gave a general direction. Today's mobile phone market is developing towards the trend of folding screens, but there are still many problems with current folding screens.

    For example, the cost is high, the price is expensive, and it is difficult to be accepted by most consumers.

    Creases will appear on the screen, which not only affects the appearance, but is also prone to malfunctions, black screens, and flickering screens.

    It is easy to break. Since the folding screen is expensive, once the screen is broken, the price of replacing the screen can be replaced by a good mobile phone.

    Although there are many problems, the trend is to make mobile phone screens bigger and bigger. The palm of your hand is so big and it is not the palm of Tathagata. Folding the screen must be a trend.

    What Samsung and other giants have failed to do well is the opportunity for legendary companies!

    Don¡¯t think that it¡¯s impossible to surpass Samsung in screen technology. Legend is an amazing company. If Samsung can¡¯t make semiconductor photoresist and EUV lithography machines, Legend can make it.

    The question is, what should Legend do to make a folding screen, and how to solve the pain points of folding screens?

    Chen Yao looked at the parameters on the monitor: "Do you and the team have any ideas?"

    Zhou Weiming thought for a while and said: "We have thought about developing a new plastic to replace glass."

    Glass is a material that is easily broken and difficult to fold. Plastic will be much more resistant to falling.

    But the problem is

    Plastics have more problems. For example, they are not as wear-resistant as glass. In the era of feature phones, anyone who has used Nokia¡¯s plastic screens knows that scratches are easy to occur on that plastic screen.

    The scratch problem is unacceptable to consumers.

    Although manufacturers can put a tempered film on them to solve the scratch problem during production, plastic screens also have other disadvantages

    For example, the light transmission effect is not as good as that of glass.

    No matter what kind of plastic it is, the light transmittance cannot be compared with glass, and the texture of plastic is not as good as glass.

    If a new plastic is developed that can combine glass and plasticThe advantages of ?, minus their disadvantages, are the most perfect.

    But the problem is, how can this new type of plastic be so easy to develop? It involves a basic scientific problem, which is huge and complex.

    Zhou Weiming frowned and said: "We don't have any good solutions for the research and development of new materials."

    Chen Yao nodded, as expected.

    He picked up the screwdriver, took apart the phone in front of him, and took out the screen.

    There are many parts of the screen, but it is not difficult to summarize. It is mainly divided into four layers.

    The most superficial part of a mobile phone is the piece of glass that your fingers touch. It is called the cover glass. Its main component is silicon dioxide. Its main function is to protect the internal structure of the screen.

    Remove the cover glass on the surface, which is the second layer, the touch sensor layer.

    Its main function is to detect touch operations.

    The touch sensing layer currently used is mainly to coat a layer of ito material on the glass using magnetron sputtering technology.

    ITO is silver oxide, because this material has better conductivity and light transmittance. Almost all screens use this material.

    Chen Yao disassembled it layer by layer. The third layer of the screen is the front panel, which is equipped with filters to display images.

    The last layer is the backplane, which is used to handle countless thin film transistors.

    If the screen wants to be folded, the most critical thing is the upper two layers. In addition to the cover plate being flexible, the sensor layer below also needs to be flexibly bent.

    But the current mainstream ITO materials are very fragile and difficult to bend and fold.

    Are there any alternatives?

    The answer is yes.

    Chen Yao looked at Zhou Weiming and asked, "Has the team started the research and development of nanosilver wires?"

    "Not yet." Zhou Weiming shook his head. He didn't find a way to cover the surface layer, so how could he develop more difficult nanosilver wires?

    Compared with the fragility of ito materials, nanosilver wires are more flexible and can be used as curved screens and folding screens.

    It is a metal material, but it is very, very small. The length is only microns and the width is only nanometers. It is not visible to the naked eye.

    Because of its nanometer characteristics, this metal has good light transmittance.

    In addition to nano-silver wires, there is another material that can replace ito, which is metal mesh. However, the production cost of metal mesh is high and the light transmittance is not as good as nano-silver wires.

    So when making a folding screen, nanosilver wire is a crucial material, but this kind of black technology material and the most cash-rich technology are all mastered by the United States.

    Even in the United States, there are still many problems with the nanosilver wires made in the United States, making it difficult to mass-produce and the cost is extremely high.

    Chen Yao made up his mind that he must make the nano-silver wire himself, and he must do the best!  (Remember the website address: www.hlnovel.com
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