Of course, there are many projects brought by supercomputers, such as the construction of the wafer factory project that Jiang Chen and others pay more attention to. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 info Actually, this project was not first proposed by Jiang Chen, of course he had this idea, but the real one who proposed it was a returned international student named Chu Tianyu. After he returned from studying abroad, he just in time for the establishment of this high-tech industrial pilot zone led by Jiang Chen. He also resolutely quit the job with high salary and high development prospects that was originally assigned to him, came to Nanshan, and obtained some investment from venture capital companies through his talent and established a technology company. Originally, they wanted to engage in the development and research of this kind of microelectronic products, but who would have thought that there was no mature silicon wafer material in China. Chu Tianyu thought that this was a business opportunity, so he found Meng Yuling, the CEO of the investment company, and explained his entire plan to him.

Although Meng Yuling doesn't know much about this high-tech industry, she is also keenly aware of the huge business opportunities in the end, but she has been abroad in the end. Of course, as the CEO, she did not take the idea or report to Jiang Chen, but used her foreign connections to carefully understand the relevant materials of silicon wafers and made a preliminary assessment. After a negative understanding, Meng Yuling believes that this has a very great role in promoting economic utilization, promoting the development of Nanshan, and even the industrial development strategy of the whole country. However, because this project was too large, she reported to Jiang Chen in a timely manner.

Jiang Chen was actually a little hesitant after listening to it, in his opinion, it was a little too early to develop the silicon wafer industry. Moreover, the production and processing of silicon wafers, and even the subsequent use require very high technical requirements, with the current technical level of Nanshan, I am afraid that this silicon wafer industry will not be able to get involved for a while. However, after Zhu Lao, Ma Lao and Lin Xiaonan in the computer center, as well as the electronic components and integrated circuit laboratory, got the news, they couldn't sit still, and came to Jiang Chen to ask for approval and implementation of this project. For the development of computer technology, the wafer processed by silicon is an excellent carrier for integrated circuits. It is also one of the stepping stones in the manufacture of micro-small LSI and chips, so how can they not be excited.

There are needs and opinions below, Jiang Chen naturally can't ignore them, but Jiang Chen still has some doubts about this Jingyuan's participation in the development. So he brought Chu Tianyu together to study and discuss the feasibility of this project, including the computer center (computer technology research and development laboratory), the electronic components and integrated circuit laboratory, and Jiang Chen.

Wafer refers to the silicon wafer used in the production of silicon semiconductor integrated circuits, which is called a wafer because of its round shape. It can be processed into various circuits and component structures on silicon wafers, and become IC products with specific electrical functions. The raw material of the wafer is silicon, and the surface of the earth's crust is useful for an inexhaustible supply of silica.

Silicon is widely found in rocks and gravel in the form of silicates or silica in nature. The manufacturing of silicon wafers can be summarized into three basic steps, namely silicon refining and purification, monocrystalline silicon growth, and wafer shaping. The first is silicon purification, in which the sand and gravel raw materials are put into an arc furnace with a temperature of about 2000 degrees or more, and then carbon element raw materials are added. At high temperatures, carbon and the oxygen in the silica in the sand combine with the carbon, resulting in pure silicon with a purity of about 98%. However, this level of silicon is not pure enough for microelectronic devices, because the electrical properties of semiconductor materials are very sensitive to the concentration of impurities, so the refined silicon is further purified. As a result, polysilicon with a purity of up to 99.9999999999% is obtained, and this purity of silicon is also called electronic grade silicon.

This is followed by monocrystalline silicon growth, the most commonly used method called the Cyzopull method. The Cyzopull method uses a high-temperature heater to dissolve the polysilicon with high-purity polysilicon. Then, a crucible is used to rotate with the polysilicon melt, a seed crystal is immersed in it, and the seed crystal is rotated in the opposite direction by a drawing rod, and at the same time, it is slowly and vertically pulled up from the silicon melt. The molten polysilicon sticks to the bottom of the seed crystal, grows in the direction of the seed crystal lattice, and after cooling, it grows into a monocrystalline silicon rod in the same direction as the internal lattice of the seed crystal. After growing with the straight-pull method, the monocrystalline rod will be cut to the appropriate size, then ground to remove the uneven nick marks, and then chemically mechanical polished to make at least one side smooth as a mirror, and the wafer fabrication is complete.

Although it is so easy, the actual production process and related technology are very complex. For example, the diameter of the produced monocrystalline silicon rod is determined by the pulling speed and rotation speed, and the slower the rate, the larger the diameter of the growing monocrystalline silicon rod. The thickness of the cut wafer is related to the diameter, and the thickness of the wafer will increase as the diameter increases. So how to control the whole speed, this has become the key to the production process. And each wafer is only one millimeter thick, or even thinner. In addition, the larger the diameter of the wafer, the more ICs can be produced on the same wafer, and the production cost will be greatly reduced. Of course, this requires higher material technology and wafer production technology for purification, and the more difficult it is.

After repeated discussions and research, Jiang Chen finally made up his mind to implement the project. However, such a large project cannot be realized by Chu Tianyu's small technology company, and it requires the joint efforts of all parties. First of all, of course, there is the financial aspect, especially the foreign exchange aspect. Because for this kind of wafer production, we do not have any relevant mature technology in China to learn from, especially the new generation of wafer production technology. Therefore, a lot of production equipment and production technology need to be imported from abroad. Of course, this can be entrusted to Chu Tianyu to be responsible, he is familiar with the situation abroad, and he is also familiar with the situation of the entire industry in terms of production, so it is only appropriate to put him in charge. It's just that in terms of funds, Jiang Chen and them still need their support.

And because of its relatively large investment, Jiang Chen and his company also discussed it for a long time before approving this plan. Of course, if Jiang Chen made the decision, naturally no one in the company objected. But this is not Jiang Chen's style, nor is it the company culture he wants. What he wants is an equal working environment, at least in the discussion of things, always on the basis of facts, and not affect the outcome by other external factors. After the final discussions, the total investment of the entire fab construction project will exceed one billion yuan. Jiang Chen's company bears 80 percent of the funds and also owns 70 percent of the shares. The local government and relevant departments jointly funded 22 percent in the form of in-kind funds, while Chu Tianyu's company accounted for 8 percent. Of course, they don't need to invest in these 8 percent of the shares, they just need to be responsible. Although it is free, they take on most of the work, which is relatively reasonable.

As for the local government and relevant departments, it is the result of Jiang Chen's communication. At the local level, it is mainly necessary to provide corresponding help and services for the construction of wafer fabs. In terms of the nature of the enterprise, it is also a high-tech company or factory. But it is a mining enterprise in itself, because its main job is to extract resources and then refine them. So this involves a series of problems, such as in terms of energy, especially the arc furnace of large power consumers, its electricity consumption is not a small number. There is also the impact on the environment, and a range of other issues. As for the relevant departments, this is mainly the Ministry of Machinery and Electronics Industry. To put it bluntly, this project can be regarded as a major national project and has very high strategic significance. So for this kind of major project, the above must be very concerned. Through negotiation, the Ministry of Machinery and Electronics Industry invested in a small amount of funds and some related technical information, and occupied a part of the shares. Of course, this is also beneficial to the development of this fab, with the joint guarantee of the above and below, the project can be carried out smoothly.