Chapter 401 Another World No. 1, CZ-G12-02
Chapter 401 Another World No. 1, CZ-G12-02
Mu Yang couldn't sleep, so he began to study the production of monocrystalline silicon rods and wafers.
He does not want to be restricted by international giants from the beginning of monocrystalline silicon ingot supply, independent research and development and production can also guarantee the quality.
For example, if he needs a 12-inch wafer, he must first have a 12-inch monocrystalline silicon rod. Manufacturers of raw material monocrystalline silicon rods will not sell them to Xinghai Group. They usually slice them into wafers, and then process the wafers and sell them to chip factories. , or self-manufacturing chips.
6-inch and 8-inch wafers are easy to buy, but 12-inch wafers are difficult, no matter when they are in short supply.
If Xinghai Group needs larger-sized wafers, other monocrystalline silicon ingot manufacturers cannot produce them. After all, they have to develop and produce them independently.
Therefore, if you don’t want to be sanctioned for chips in the future, you have to start with raw materials such as monocrystalline silicon rods and wafers.
Mu Yang opened the achievement point store and began to search for monocrystalline silicon and wafer technologies.
He had searched for this knowledge before, but he didn't buy it.
After a while, according to his previous plan, among dozens of monocrystalline silicon and wafer technologies, he chose a technology that was more suitable for Xinghai Group and the contemporary background.
★A low-energy and high-efficiency 12-inch monocrystalline silicon rod and wafer production method★
[Technology introduction: adopt a new CZ single crystal growth method, and use lower energy consumption electric arc furnaces, quartz crucibles, graphite heaters, single crystal furnaces, argon production systems, thermal fields, slicers and other production equipment to purify from raw materials , polysilicon melting, spin stretching single crystal silicon, single crystal silicon rods and other processes to ensure less impurities in polysilicon, higher purity of argon gas, and new technology to ensure less doping impurities in the production process of single crystal silicon rods, Lower energy consumption and faster growth efficiency of monocrystalline silicon rods. Using more excellent wire cutting machines, gold steel wires and polishing equipment can reduce the fragmentation rate, cutting loss, chipping, scratching and other losses, and obtain more wafers per unit length of monocrystalline silicon rods.
It has the following advantages: low energy consumption, ultra-high purity single crystal silicon rods, lower cost of argon gas use, faster growth efficiency of single crystal silicon rods, better silicon toughness and less brittle, excellent wafer raw material processing methods]
[CZ-G12-01: World-class level, the same technology as the world's giant companies, demand achievement points: 100]
[CZ-G12-02: The world's top level, about 4-8 years ahead of the most advanced technology in the current laboratory, required achievement points: 250]
Mu Yang compared the two versions of technology, and found that the equipment of CZ-G12-02 version technology can also be manufactured, but the investment cost is higher, and most importantly, it consumes more achievement points.
Both the 01 and 02 versions belong to the same type of technology. If you buy the 01 version technology, you only need to spend another 150 points to get the 02 version technology.
However, after the technology is upgraded, the original equipment may not be suitable, and it is better to be in place at one time.
Moreover, this technology is not only the technology of monocrystalline silicon generation, but also the technology of cutting monocrystalline silicon rods into wafers and processing them into final wafers. Of course, chip manufacturing and chip design are not included.
In the end, Mu Yang bought the CZ-G12-02 version technology.
To purchase this technology, the main requirement is to reach level 7 in semiconductor technology. Mu Yang has already upgraded the semiconductor technology to level 7, and other skills can also be satisfied, so you can buy it directly.
A few minutes later.
Mu Yang has absorbed this technology and has a better understanding of wafer production.
For example, the most critical single crystal furnace equipment, Muyang calls it the XH1200 single crystal furnace, which can use a 40-45-inch thermal system, with a maximum melting capacity of 1200kg, and can pull 12-inch to 14-inch single crystal silicon rods.
If a 14-inch monocrystalline silicon rod is produced, the purity of the wafer is lower, and the optimal size is 12 inches.
But having this equipment already means that Xinghai Group has the level of mass production of 14-inch wafers.
The maximum melting capacity is 1200kg, which is not much improved compared to the mainstream 12-inch single crystal furnace melting capacity of 1000kg. The energy consumption will be greater, which is not necessary.
How long is a 1000kg 12-inch monocrystalline silicon rod?
The density of monocrystalline silicon is 2.32-2.34 grams per cubic centimeter, if it is 12 inches, that is, the diameter is 30cm, and the area is 706.5cm2!
The weight of monocrystalline silicon per centimeter thickness is 1646 grams, or 1.646KG!
The length of one meter is 164.46KG. If loss is not considered, one ton of molten material can produce a single crystal silicon rod with a length of up to 6 meters.
But in fact, it is generally very powerful if it can be made into a length of four or five meters.
The advantage of long is that the utilization rate is higher. This is because the end of the single crystal silicon rod is not flat, but a tapered surface, and there is a waste of material.
Of course, compared to the entire monocrystalline silicon rod, this loss is nothing.
In addition to the diameter of monocrystalline silicon, there is also a core indicator, that is, the purity of monocrystalline silicon!
General wafer purity requirements: above 99.999%.
In fact, the manufacturing process of wafers is not very complicated. The difficulty lies in the fact that semiconductor products have high requirements on the purity of wafers, and the actual purity needs to reach 99.999999999% (9 nines) or above.
Some people may ask, why achieve such an outrageous purity?
Isn't 99.999% not enough?
Purity = mass/total mass × 100%
If the purity is 99.999999%, that is, one ton of monocrystalline silicon contains 1 gram of impurities, which is about 1 gram of impurities in a 12-inch and several-meter-long monocrystalline silicon rod.
1 gram of impurities is not concentrated in one area, but mostly scattered.
If it is only concentrated on one chip, then there is no need to worry at all, just scrap this chip.
The problem is, you don't know how these impurities are distributed.
If there are impurities on the circuit on this chip, just like a highway collapses suddenly, then it will affect the entire high-speed operation, or even fail to operate, and it will be scrapped directly.
Therefore, this is why wafers require high purity. If the purity is only 99.5%, the entire monocrystalline silicon rod may not be used, and the core scrap rate is very high.
Moreover, the electrical properties of semiconductor materials are very sensitive to the concentration of impurities, so further purification is required.
After Mu Yang absorbed the materials, he felt a little tired and went back to the house to rest.
The next day, Mu Yang went to the 103rd floor to export the information of CZ-G12-02.
After working for more than ten days, Mu Yang finished exporting the equipment manufacturing data, such as the manufacturing process, he had to take his time.
The CZ-G12-02 equipment is not very complicated. The core is the single crystal furnace, and Muyang divides it into 9 small items of equipment.
Wafer production is a new field in Xinghai Group. Mu Yang has given Xingyun team half a year to figure out the world's top wafer manufacturing technology, which is impossible.
If it is possible, 12-inch wafer equipment has been mass-produced in China long ago.
Of course, maybe the equipment is easy to make, but the manufacturing process is more important. If you don't understand the process, it's useless to make the equipment.
Moreover, the CZ-G12-02 equipment is completely different from other manufacturers' equipment, with a higher automation program.
For the technical output of this project, Mu Yang intends to carry out feeding and indoctrination mode, which is impossible.
On March 20, Muyang held a scientific research meeting of Nebula Technology Company.
Nebula Technology Co., Ltd. has been established since last year. At present, the company has about 200 people, most of whom are scientific researchers, and it is still expanding.
In the past six months, the personnel of this company have been running in the team and experimenting, and Mu Yang let them make mistakes and learn.
The technical manager is Xiang Hai, a doctor of returnees, a senior semiconductor expert. He is 40 years old this year. Mu Yang was promoted from the team leaders of Xingyun Company. He has not yet fully become a full-time employee.
Xiang Hai, as the technical manager of the group, is actually equivalent to the vice president of technology of the subsidiary, but in Xinghai Group, it is just set up in this way, and wafer production is regarded as a big project.
When each project team develops to a certain scale, Muyang will separate these large projects and set up a subsidiary general manager and technical vice president, which is also the path that Xinghai Group must take.
In addition to Mu Yang and secretary Luo Zhize, the participants included Xiang Hai, 3 technical assistant managers and 6 technical experts.
Mu Yang asked Luo Zhize to distribute the information, knocked on the table, and went straight to the topic: "According to the situation of each group and your professional expertise, I will arrange the electric arc furnace, quartz crucible, graphite heater, single crystal furnace, and argon gas production system. Production equipment such as heating field, slicing machine, etc. are divided into nine equipment research and development groups. You must thoroughly understand the equipment technology, and at the same time assist the patent department to apply for patents.
The specific drawings have been uploaded to the company's drawing file system, and you can view them according to your own authority, and pay attention to technical confidentiality.
We cannot buy suitable equipment from the market. We can only develop and manufacture it independently. If you have any questions, please seek help from the group's expert group, and they will try their best to assist you.
Most of you have just joined the Xinghai Group. Xingyun Technology and other project teams are a whole. Don’t treat Xingyun Technology as a lone ranger company. You must take the initiative to communicate and coordinate. Intrigue is not popular in Xinghai Group. Don’t hold back when you do things. With my own little thoughts.
For example, in the production of slicers, after you place the processing task, the machining workshop will naturally schedule production according to the process, and everything will follow the process. If the process does not work, go to the machining production manager for coordination.
As long as it is not a centralized task, the group's basic processing tasks will not be so busy that it takes a week or two to queue up for their turn. Generally, the processing of small parts can be processed in the afternoon after the task is issued in the morning.
Remember, you are a team. "
After listening to the chairman's words, Xiang Hai and the others flipped through the documents.
Just like the information on the slicer, the above technical requirements, but there is no specific processing size of the detailed drawings, you can only open it on the computer to view the authorized information that you can see.
The newcomers were more curious about where the chairman got these materials, but they didn't dare to ask. In Xinghai Group, it was rumored that the chairman was an all-round expert, with even better operating skills, and had won the championship of the World Skills Competition.
Drawing is fast. A senior mechanical engineer needs to draw for an hour, and it will never take more than ten minutes to reach the chairman.
Therefore, it is really possible that this pile of information was created by the chairman alone, but I don’t know how long he has been working on it. Maybe he has been preparing it for more than half a year. Such a calculation feels reasonable.
There is another update. The lumbar muscles in the back of the body are strained, which seriously affects the code words. I have been treated for more than half a month. It is good to be able to complete full attendance this month. I am very sorry.