God-level industrial master

Chapter 198 Filling the gap in the country
Xie Zhenhua smiled happily again.

Since going to Jiuzhou Industrial Co., Ltd. yesterday, Xie Zhenhua has been relaxed. Even last night, he was almost too happy to sleep. The IGBT import purchase that they felt was very difficult is no longer a problem and has been successfully resolved.

What Chen Guihong said is absolutely correct, all the IGBTs needed by the DJ4 electric locomotive can be purchased from Tang Fei, instead of importing them from abroad.

Noticing Xie Zhenhua's expression, Chang Jinlin said: "Okay, old Xie, why are you so happy? You must know that I am worried about the IGBTs needed for those two cars."

Xie Zhenhua suppressed his smile, and said seriously: "Mr. Chang, I have something to report to you, about our IGBT."

"Oh." Chang Jinlin looked at Xie Zhenhua seriously.

Xie Zhenhua said: "Yesterday afternoon, according to your instructions, I called Xiao Chen from the procurement center to inquire about the import of IGBTs. How did I know that Xiao Chen told me an exciting news..."

Xie Zhenhua recounted the matter, and even talked about the preparations of Jiuzhou Industry Co., Ltd. for IGBT manufacturing, and also said that Jiuzhou Industry will manufacture the fifth-generation IGBT.

So, Chang Jinlin was shocked!
It is shocking enough that Jiuzhou Industrial Co., Ltd. can produce IGBT, and they will produce the fifth-generation IGBT.

At present, the mainstream in the international market is the third-generation IGBT. I heard that the fourth-generation IGBT has just been born in a famous electrical group in the United States, and has not yet been fully introduced to the market.

For the IGBTs needed by these two cars, Chang Jinlin barely fell asleep last night, thinking about which leaders and people to go to after going to Beijing.

Now it seems that there is no need at all, and the booked air ticket can be refunded, because the difficult problem has been perfectly solved by Jiuzhou Industrial Company.

After a long time, Chang Jinlin said with emotion: "It's unbelievable. A few months ago, Xiao Tang said that he would do IGBT. We still thought that Xiao Tang was a little whimsical. Who would have thought that this matter was really done by him. .”

Tang Fei wants to do, which one does not make people feel whimsical.

At the beginning, everyone thought it was very difficult to make the connector, because the water of the connector was too deep. As a result, Tang Fei not only made it, but also made the connector into a high-quality product, killing several competitors who made connectors, such as Jin Jiu The company is now completely closed down, and Liu Jinjiu is also in prison.

Tang Fei wanted to buy the original labor service company. Many people in the Red Star Factory thought it was impossible. Tang Fei would never have so much money.As a result, only one year later, Tang Fei bought the original labor service company as a whole.

Later, Tang Fei had to make traction motors, control cabinets, etc., which made people think that it was almost impossible to succeed. In the end, Tang Fei actually completed all of them.

A few months ago, when Tang Fei said that he wanted to build an IGBT, Chang Jinlin shook his head, thinking that this was completely impossible. How could he have imagined that Tang Fei not only made it, but also the fifth-generation IGBT.

Chang Jinlin was very touched, and said movedly: "Old Xie, practice has proved that we underestimated Tang Fei time and time again."

Xie Zhenhua fully agreed, "Yes, in the end, Tang Fei surprised us again and again, and now even the IGBT has been successfully manufactured."

It has been successfully developed and all production equipment is in place. Even if the first high-power IGBT has not been produced, Xie Zhenhua believes that this is success.

The two sighed with emotion, and their hearts gradually became more relaxed. There is no need to worry about the IGBT, and a big problem has been solved.

Chang Jinlin even said that after a few days, he would go to Jiuzhou Industrial Company to take a look in person. By the way, he also thanked Tang Fei for solving such a big problem for Red Star Factory.

.........

After some preliminary preparations, the time to produce IGBTs was ripe. Tang Fei personally chose a good day to start the production of his first high-power IGBT.

The core of IGBT is chips and large-scale integrated circuits. Such core things are of course produced by Jiuzhou Industrial Co., Ltd. itself.

The first step in chip fabrication involves a photolithography machine and wafer slicing.

Lithography machine Jiuzhou Industrial Co., Ltd. has one, which is the world's most advanced large-scale high-precision lithography machine, which is used to produce IGBT chips with ease.

The first batch of wafers has also been purchased in place.

Wafer refers to the silicon chip used in the production of silicon semiconductor integrated circuits. Because of its circular shape, it is called wafer.Wafer is the carrier used in the production of integrated circuits. In general, wafers refer to single crystal silicon wafers.

晶圆是最常用的半导体材料，按其直径分为4英寸、5英寸、6英寸、8英寸等规格，近来发展出12英寸甚至在研发更大规格的。

Jiuzhou Industrial Co., Ltd. purchases 8-inch wafers, which are imported.No way, the quality of domestic wafers at this time cannot be compared with imported wafers. It should take more than ten years of development before domestic fabs can produce wafers with world-class standards.

The lithography machine has a single constant temperature and dust-free factory building. This is the treasure of Jiuzhou Industrial Co., Ltd., so it is natural to focus on it.

Chip production was about to begin, and Tang Fei arrived at the production site.In addition, there are many technical experts and technicians.

For example, Zhao Ke, two experts such as Sun Xu and Tang Zhonghua, several technicians, the workers here are also carefully selected, and the requirements are very high. Ordinary workers are not allowed to enter this factory building, let alone operate this machine in person. Lithography.

Under the guidance of technicians, several workers in "heavy armor" are carefully cleaning wafer slices, which is the first step.

Then it has to go through multiple processes such as primer coating, spin-coating photoresist, soft baking, alignment exposure, post-baking, developing, hard baking, and etching.

Wafer slices are like a thin, very smooth mirror.Photolithography is to lithography the designed chip circuit structure onto the wafer slice.

Lithographed wafer slices can produce thousands or even tens of thousands of chips per slice, just like printing. Lithographed wafer slices are printed templates, and lithography is equivalent to typesetting.

The workers are meticulous, very cautious and strictly follow the process requirements, cleaning the wafer, coating the photoresist on the wafer, aligning the exposure, drying, developing, etc...

When the first lithographic wafer was produced, Tang Fei was slightly excited, thinking that this should be the first wafer in China.

Sun Xu and Tang Zhonghua carefully inspected the lithography-finished wafer slice in person. They found several small defects with very critical eyes.

Therefore, for these defects, the process parameters are perfected, improved, etc., and then the second wafer slice is photoetched.

After making several pieces in a row, no defects were finally found, the process stabilized, and the workers who operated the lithography machine were much more skilled.

"Boss, come and take a look. This wafer is perfect, with almost no flaws." Tang Zhonghua said to Tang Fei who was beside him.

Hearing this, Tang Fei also checked carefully.There is special inspection equipment for the inspection of wafers completed by lithography, and this equipment is also included in the system reward package.

After looking at it, Tang Fei became completely satisfied, and said loudly: "This is our first photolithographic wafer in the true sense."

The first lithographic wafer is made, and the next step is to use it as a template for printing, and print the circuit structure of the chip on the semiconductor material.

On the eve of New Year's Day, Jiuzhou Industrial Co., Ltd.'s first batch of IGBT chips and IGBT integrated circuits were manufactured.

These things were sent to the IGBT manufacturing plant. In this plant, workers started the production of the first batch of high-power IGBTs.

In the huge workshop, workers in white coats and blue hoods got busy, and started the production of the first batch of high-power IGBTs under the guidance of technicians.

Vacuum reflow soldering, ultrasonic cleaning, defect detection (X-ray), automatic wire bonding, laser marking, shell plastic sealing, shell potting and curing, terminal forming, functional testing...

After finishing the process one by one, the first batch of 6500V IGBTs are being produced gradually.

in the office.

Not long after Tang Fei came back from the IGBT production site, even going to the production site is not easy because he needs to be "fully armed", but Tang Fei still insists on going once a day these days to see the production of his own batch of IGBTs.

After I came back, I made a cup of good tea by myself. I was a little excited to think that the first batch of high-power IGBTs would finally be produced soon.

After taking a few sips of tea, Tang Fei stood in front of the window of his office in a good mood. Looking into the distance, he could see the large factory building that produced IGBTs.

"Boom, boom, boom!"

Hearing the knock on the door, Tang Fei thought it was Zhao Ke who came, but to his surprise, it was Liu Jun who came in.

Liu Jun mainly reported two things when he came in. The first thing is that the USB flash drive has successfully applied for a US patent.The second thing is that the series of IGBTs designed and developed by Jiuzhou Industrial Co., Ltd. have successfully applied for domestic patents and are currently applying for international patents.

Hearing such a report, Tang Fei felt even better and praised Liu Jun a few words.Liu Jun happily left Tang Fei's office.

From Tang Fei's point of view, Liu Jun is really good, with excellent working ability, and he has completed one patent application after another for himself. The intellectual property rights and patented technologies of many things are currently firmly in the hands of Jiuzhou Industrial Co., Ltd. itself.

As a reborn person, Tang Fei is very aware of the importance of intellectual property rights and patented technology. Every time a new product is developed, the first thing he does is to tell Liu Jun to apply for a patent as soon as possible.

Near the end of get off work in the morning, there was another knock on the office door.

It was Zhao Ke who came in this time. He didn't come in empty-handed. He was holding something in his hand and put it on Tang Fei's desk. He said happily, "Boss, take a look and see how it looks!"

This is exactly what Tang Fei has been waiting for.

…………

There are two updates today, the first one is here!

(End of this chapter)