I add some practice in the real world

Chapter 361

"Xiao Liu, Xiao Zou, are you sure you're not fooling me?" As soon as Lin finished speaking, he felt a little reckless.

Because the two people in the video came out of that space base.

Take Liu Chengdong as an example, he himself is the second in command of the base, and in terms of position level, he is a head higher than Lin Weiguo, the director of the optoelectronic institute.

Lin Weiguo also called the other party "Xiao Liu" because of his age and seniority.

Not to mention the other Zou Ying, she is the person in charge of the technical department in the base, and she often cooperates and communicates with brother units like the Institute of Optoelectronics, and is very familiar with each other's situations.

Take the virtual projection watch that was first developed and put into production as an example, several core technologies in it are based on the technical reserves of the Institute of Optoelectronics.

Hearing about the manufacture of atomic-level precision lithography machines from such two high-ranking "acquaintances", Lin Weiguo couldn't help but feel a little skeptical.

No way, who made the atomic-level precision mentioned by these two people really unbelievable!
Speaking of this, we have to briefly mention the entire process of chip manufacturing: wafer processing-oxidation-lithography-etching-film deposition-interconnection-testing-packaging.

The most critical technical step is photolithography.

What is lithography?

A simple understanding is to "print" the designed circuit pattern onto the wafer through special fluctuating light.

At present, the mainstream lithography machines on the market can be divided into two types according to the scope of the process: one is the DUV lithography machine that refracts the 193nm light source through the excimer laser.

The DUV lithography machine can basically only reach the 25-nanometer level. For example, the famous Intel company uses the double-bench magic modification method to achieve the accuracy of the DUV lithography machine to 10 nanometers, but it cannot reach below 10 nanometers.

However, DUV lithography is a thing of the past. Another more advanced EUV lithography machine uses plasma laser emission, which can emit light with a wavelength of 13.5 nanometers.

Under this exposure accuracy range, some advanced wafer manufacturers use multi-layer exposure methods, or the superposition of multiple working platforms, to greatly improve the resolution, so that the circuit accuracy level of exposure and etching can be improved several times. , so as to produce 7nm chips of 5nm or even higher level.

However, the result of such a tricky method is that the yield rate of the final wafer tape-out is low, which in turn leads to a double increase in chip manufacturing costs.

This is why the price of high-end chips has always remained high.

To solve this problem, it is necessary to continuously improve the exposure accuracy of the lithography machine and improve the chip manufacturing process.

So what is the concept of 0.1 nanometer precision proposed by Chen Jue?
As far as the level of precision mastered by human beings is concerned, not to mention these domestic optoelectronic institutes and semiconductor R&D companies that have become monks halfway, even if it is handed over to ASML, the leader of the entire industry, it will take decades or even half a century to catch up. .

Once you get a lithography master machine with this level of precision, let alone 7nm or 5nm chips, even chips with specifications and performance improved by a hundred or a thousand times can be manufactured in minutes.

That's why Lin Weiguo was so shocked when he heard the news. It's because the "satellite" on the base is too big.

……

"Lin Suo, how dare we fool you with such an important matter!"

"It's just some of the confidential technologies involved here, it's not easy to say in the video."

"If you are always worried, hurry up and bring a batch of raw materials for making the lithography master machine! The more the quantity, the better. After passing this village, there will be no such shop!" Liu Chengdong said anxiously in the video call.

Because judging from Chen Jue's previous attitude, this guy may leave the base at any time because of a sudden thought.

Moreover, when Chen Jue left last time, he walked so gracefully that there was no way to stop him.

After learning the lesson from the last time, Liu Chengdong couldn't let go of his hanging heart until he got the lithography master machine.

Fortunately, Lin Weiguo at the other end of the video is not a pedantic person. He knows that the secret of the second home behind the space base is enough to shock the world.

On this basis, it seems reasonable for the base to suddenly come up with the lithography master machine technology for manufacturing atomic-level precision.

Ever since, after confirming several times with Zou Ying and Liu Chengdong during the call, Lin Weiguo immediately mobilized the entire staff of the Optoelectronics Institute to collect a large number of components, raw materials, and a bunch of process documents required for manufacturing lithography machines. It was delivered to the Kunpeng transport plane arranged above.

He himself led a small team of more than a dozen people from the Institute of Optoelectronics, and followed the batch of materials to the space base in Long Province.

……

Due to the lack of clues in the base cultural relics collection, temporarily unable to figure out how the sense of time violation and feeling came about, Chen Jue simply put down the idea of ​​continuing to think deeply.

Walking around in the collection hall, taking a quick look at the historical relics of various ages with signs of decay, Chen Jue muttered: "Time goes by and years are easy to come to an end... Even these dead Nothing can stop the erosion of time, let alone the ancient kings with mortal flesh... Fortunately, I have already taken this crucial step, and I have plenty of time to solve these mysteries..."

After saying the words that made others puzzled, Chen Jue walked out of the collection hall slowly under the surprised eyes of archaeologists like Mr. Liu, and finally sat down on the steps of the collection hall as if there was no one else.

At this time, Liu Chengdong hurried back from a distance in a ferry car. Seeing that Chen Jue seemed to be squatting on the steps of his own house to pass the time, he was secretly relieved to see that he didn't look like he was leaving immediately.

"Boss, the materials for the lithography machine manufactured by the Optoelectronics Institute will be delivered in half an hour. This time, it seems that I have to trouble you again." Liu Chengdong said and sat down next to Chen Jue.

"Manufacturing chips is a fantasy for ordinary people, but for me, it's just a matter of little effort, so don't be too polite." Chen Jue waved his hand and replied indifferently, and played with the smart watch by the way , Quickly flip through the relevant process materials related to chip manufacturing collected in the base's qualification library.

After seeing Chen Jue's unbelievable reading speed, Liu Chengdong who was sitting next to him was also a little dumbfounded in astonishment.

Good guy!
This speed can't be said to be ten lines at a glance, but one page at a glance.

If those college students outside have this reading speed and memory ability, they will pass CET-4 or CET-6, take the postgraduate entrance examination, and study for a Ph.D. It’s not like playing.

Chen Jue ignored the other party's surprise. After scanning the chip manufacturing process intently, he reached out and poked the ground, as if grabbing tofu, and picked a palm-sized cement board into the palm of his hand.

"Try wafer processing first!"

　The update is here, let everyone wait for a long time~ This week I am a little busy and have no time and energy to update. After all, it is the first time to be a father, and a novice father has no experience on the road (cover face)

I took the time to code a chapter in the middle of the night~ I finally have time to update, and then I will try to update steadily while taking care of my wife with the baby!
　
(End of this chapter)