Countercurrent 1982

Chapter 1159 Clean Room
In the previous life, when Duan Yun was studying for a Ph.D., there was a dust-free laboratory in the school, and the dust-proof level could reach [-].

In fact, in the previous life, there was already a first-class dust-proof room in China, which meant that only one particle was allowed to exist per square meter, which was considered the highest-level clean room.

In terms of the use of the clean room, the first-class clean room is mainly used in the microelectronics industry for the manufacture of integrated circuits, and the precision requirements for integrated circuits are sub-micron.

Class 2 clean rooms are mainly used in the semiconductor industry with bandwidths less than [-] microns.

The class [-] clean room is mainly used in the aseptic manufacturing process of the pharmaceutical industry, the manufacture of implanted objects, surgery, transplantation, the manufacture and isolation of integrators, etc.

The thousand-class clean room is mainly used for the production of high-quality optical products, and is also used for testing and assembling aircraft gyroscopes and high-quality miniature bearings.

The [-]-class clean room is used for the assembly of hydraulic or pneumatic equipment, and in some cases it is also used in the food and beverage industry, medical industry, etc.

The [-]-class clean room is mostly used in industries, such as optical product manufacturing, tiny component manufacturing, electronic system, hydraulic or compressed air system manufacturing, food and beverage production, pharmaceutical industry, etc.

However, based on the current technology, the most advanced clean room in the world can only reach level 10. Only some international chip giants have such a clean room, and this is not a workshop, but a laboratory, and the number is very small , even if Duan Yun visited Toshiba Corporation in Japan last time, their dust-free workshop can only reach level 100.

As for our country, the highest level of dust-free workshops can only reach level 1000. China's purification workshop technology began in the 60s.At that time, purification workshop technology was born to meet the product quality requirements of precision instruments, aviation instruments and electronics industries, and to meet the precision, miniaturization, high purity, high quality and high reliability of processing and experimental research in these industries. Emerging Technologies.

Especially the sophisticated aerospace industry, including China's earliest Long March 2 and Long March [-] rockets, are all assembled in such clean workshops.

However, in the civil field, the 742 factory in Wuxi, which has the highest level of dust-free workshops in China, can only reach the 1-level dust-proof level in the dust-free workshops that the state has invested heavily in building for them.

This also means that in China in 1986, no construction team could build such a dust-free workshop with a dust-proof level of 100!

This is something that Duan Yun didn't think of before, but a dust-free factory of this level must be built, because he introduced a three-micron-level chip production line from Japan, and level 100 is the minimum dust-proof level for this kind of chip production!
In addition, the dust-free workshop of the electronics manufacturing industry not only requires a high level of cleanliness, but also considers that the air volume, temperature, humidity, pressure difference, and equipment exhaust are controlled on demand, and the illuminance and cross-sectional wind speed of the clean room are controlled according to the design or specifications. This type of clean room has extremely strict requirements on static electricity.

Among them, the dust-free workshop for making chips has particularly high requirements on humidity, because static electricity is easily generated in an overly dry factory building, causing damage to CMOS integration.Generally speaking, the temperature of the electronic workshop should be controlled at about 22°C, and the relative humidity should be controlled between 50-60% (there are relevant temperature and humidity regulations for special clean workshops). At this time, static electricity can be effectively eliminated and people can feel comfortable. .

Shenzhen's construction engineering team is definitely the strongest engineering team in China, but this is only for ordinary buildings, and they are helpless in the face of this kind of dust-free workshop with very high performance indicators.

In desperation, Duan Yun could only consult Japanese experts to see if he could invite a Japanese engineering team to undertake the project.

The final result obtained by Duan Yun was that the Japanese side contacted their domestic professional dust-free workshop construction team. After seeing the drawings, the other party offered a price of 560 million US dollars and a construction period of two years.

This is absolutely unacceptable to Duan Yun. It's not that he can't accept the quotation of 560 million US dollars from the Japanese engineering team, but that the two-year construction period is too long. After the factory building is completed, it will take at least half a year to install and debug the equipment After two and a half years, the day lily has been cold. In 1988, a company in the United States had already produced a new type of flash memory chip. In this way, Duan Yun lost the possibility of seizing the market first.

In fact.At the beginning, Wuxi Factory 742, which invested heavily in the introduction of European and American production line electrical appliances, took a full 6 years from the start of the plant to the final production, so that the products just produced by the 742 Factory were far behind the world's advanced level, but They are at least a state-owned enterprise, backed by state funds, and a private enterprise like Duan Yun can't afford it.

In desperation, Duan Yun made a cross-border call to Tanaka Shinichi of the Tokyo Electronics Department, hoping that he could help solve this problem.

Duan Yun’s request on the phone is that the civil engineering part of the plant will be completed by the Chinese engineering team, and the dust-free workshop can purchase advanced air filtration and temperature control equipment from Japan, and experts from Toshiba will direct the Chinese engineering team to complete the construction. Installation is also the cheapest and most efficient way to build.

And Duan Yun clearly told Tanaka Shinichi that the progress of the dust-free factory building and equipment installation determines the life and death of this chip project. If the entire construction period of the factory building exceeds one year, then Duan Yun will cancel the project.

After Tanaka received Duan Yun's call, he also attached great importance to it, saying that he would discuss it with the professional company that built the clean room in Japan, and he would reply within two days.

After Duan Yun put down the phone, he suddenly became a little depressed. He didn't expect that the whole chip project would suddenly get stuck in the matter of the clean room.

However, Duan Yun quickly formulated another backup plan, that is, if the Japanese company cannot complete the construction of the factory building within one year, then Duan Yun will personally go abroad to Europe and the United States, and choose to directly purchase the key to the dust-free workshop Equipment, direct people to install it yourself.

All in all, Duan Yun must complete the construction of the plant and the debugging of the equipment within one year, and strive to officially put into production the "Flash" flash memory chip at the beginning of 1988.

"You mean to spend more than 500 million US dollars to build a factory building?" When Cheng Qingyan learned of the construction plan of Duan Yun's dust-free workshop, she was immediately surprised.

You know, the Shenzhen engineering team is known as the strongest engineering team in the country, with the aura of "Shenzhen Miracle" on its head, and once set a record of building a one-story building in three days.

Therefore, it is very efficient and cheap to build factories in Shenzhen. Before Duanyun Electronics Factory built several factories, it cost a total of only a few hundred thousand yuan, and they were all fully enclosed factories with the highest specifications.

As for some semi-enclosed factories with only steel frames and roofs, one can be built with only 500 to [-] yuan. Cheng Qingyan can't even imagine that there are factories worth [-] million US dollars...

(End of this chapter)