I’ll add some practice in the real world

Xiao Liu, Xiao Zou, are you really not fooling me? As soon as Lin finished speaking, he felt that he was a little rash.

Because the two people in the video came from that space base.

Take Liu Chengdong as an example. He is the second-in-command of the base. In terms of position, he is a head above Lin Weiguo, the director of the Institute of Optoelectronics.

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

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

Take the virtual projection watch, which was the first to be developed and put into production. Several core technologies in it are based on the technical reserves of the Institute of Optoelectronics.

After learning about the manufacturing of atomic-level precision photolithography machines from such two acquaintances with high positions, Lin Weiguo couldn't help but feel a little doubtful.

There is no way, the atomic level precision mentioned by these two people is really incredible!

Speaking of which, we have to briefly mention the entire process of chip manufacturing: wafer processing - oxidation - photolithography - etching - thin film deposition - interconnection - testing - packaging.

The most critical technical step is photolithography.

What is photolithography?

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

The mainstream lithography machines currently on the market can be divided into two types according to the process range: one is a DUV lithography machine that refracts the 193-nanometer light source through an excimer laser.

DUV lithography machines can basically only achieve the 25-nanometer level. The famous Intel company uses a dual-workbench magic modification method to achieve the accuracy of DUV lithography machines 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, and the wavelength of the light it can emit can reach 13.5 nanometers.

Within this exposure accuracy range, some advanced wafer manufacturers use multi-layer exposure methods or the superposition of multiple work platforms to greatly improve the resolution, allowing the exposure and etching circuit accuracy level to be improved several times. , thereby producing 7-nanometer or higher-level 5-nanometer chips.

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

This is why the price of high-end chips remains high.

To solve this problem, we must continuously improve the exposure accuracy of lithography machines 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 currently controlled by humans is concerned, let alone these domestic optoelectronics institutes and those half-way semiconductor R\u0026D companies, even if it is left to ASML, the leader in 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 7-nanometer or 5-nanometer chips, even chips with specifications and performance that are improved a hundred or a thousand times can be produced in minutes.

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

…

Lin Suo, how dare we deceive you about such an important matter!

It's just some confidential technologies involved here, it's hard to explain in the video.

If you are worried, hurry up and bring a batch of raw materials for manufacturing lithography master machines! The more the better, there will be no store like this after passing this village! Liu Chengdong said anxiously on the video call.

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

Moreover, when Chen Jue left last time, he walked so gracefully that he couldn't even stop him.

After learning the lesson from the previous episode, it was impossible for Liu Chengdong to let go before getting the master lithography machine in hand.

Fortunately, Lin Weiguo at the other end of the video is not a pedantic person. He knows that the secrets of the second home behind the space base are shocking enough.

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

Ever since, after confirming with Zou Ying and Liu Chengdong several times during the phone call, Lin Weiguo immediately mobilized the entire staff of the Institute of Optoelectronics to provide a large number of components, raw materials, and a bunch of process information needed to manufacture lithography machines. The Kunpeng transport plane arranged by the above was sent.

He himself also led a small team of more than ten people from the Institute of Optoelectronics to quickly follow this batch of materials to the aerospace base in Long Province.

…

Due to the lack of clues in the base's cultural relics collection, it was temporarily impossible to figure out how the sense of time dissonance came about, so Chen Jue simply gave up the idea of ​​continuing to think deeply.

After walking around in the collection and taking a quick glance at the historical relics from various eras with traces of decay, Chen Jue muttered: Time flies...even these dead Nothing can stop the erosion of time, let alone an ancient king of flesh and blood... Fortunately, I have taken this crucial step, and I have plenty of time to solve these mysteries...

After uttering these words that left others scratching their heads, Chen Jue slowly walked out of the library under the surprised eyes of archaeological experts such as Mr. Liu, and finally sat down on the steps at the entrance of the library as if there was no one else.

At this time, Liu Chengdong hurried back from a distance in a shuttle bus. He was secretly relieved when he saw that Chen Jue was sitting on the steps of his home as an old farmer in the country, passing the time, and did not look like leaving immediately.

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

Making chips is a fantasy for ordinary people, but for me it's just a piece of cake. You don't have to be too polite. Chen Jue waved his hand and replied nonchalantly, and played with the smart watch by the way. , and quickly projected and browsed through the relevant process materials related to chip manufacturing included in the base's qualification database.

After seeing Chen Jue's incredible reading speed, Liu Chengdong, who was sitting next to him, was also stunned and a little stunned.

Good guy!

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

If those college students outside had such reading speed and memory ability, they would not be able to pass CET-4 or CET-6, take postgraduate entrance examinations, or study for Ph.D.'s.

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

Let's try wafer processing first!

The update is here, everyone has been waiting for a long time~ I am a little busy this week and don’t have the time or energy to update. After all, I am a father for the first time, and I don’t have much experience as a new father on the road (face covering)

I took the time to code a chapter in the middle of the night~ I finally have time to update it. I will try to update it stably while taking care of my wife and baby!