Siheyuan: The Era of Core Generation

Chapter 92 The Birth of the Second Generation Lithography Machine
The motion system of the lithography machine designed by Zhao Ye for this lithography machine is realized by using the principle of leverage.

After all, this machine is still almost purely manual now. Zhao Ye uses a precision screw rod and a precision gear set to amplify the movement distance of the base many times. circle, the base is displaced by two microns as designed.This is almost the limit of this era.

There are seven such handwheels on the operating table of the lithography machine, which respectively control different movement paths of the base.After the system was installed, several experts immediately tested it.The testing work was slower than the installation, and when the testing work was completed, the entire basement burst into applause.

"It's incredible, it's great! This is simply a miracle!" The personnel in charge of the measurement clapped their hands violently, and gave warm applause to these senior technicians.

These precision machining were all done by Zhao Ye and the others by hand bit by bit.The final movement accuracy shocked the experts in precision measurement.

It is not at all simple to achieve such a precise displacement.

The applause stopped and work continued as usual.

Some of the measuring equipment was removed, while others remained.Then it is the turn of the lens group to install.

Zhao Ye also had a few senior fitters who came to support him, and installed the entire system step by step, bit by bit. It took a whole week before the first device was officially born and passed the test.

Everyone wept with excitement, this is almost a representative work of National Precision Instruments!At this moment, it can even be said to be one of the most sophisticated instruments in the world.

After everyone was excited, they took a group photo.The only one who hasn't smiled yet is Professor Quan.

"Professor Quan, tomorrow is trial production, success or failure depends on your light bulb!" Before Zhao Ye stepped forward to speak, Professor Ci had already pulled Professor Quan to say such a sentence.This made Professor Quan even more nervous.

"Strive for a pass, fight for it!" Professor Quan didn't dare to talk too much. To be honest, he really didn't know what to do.

Once Zhao Ye saw the other party say that, he didn't say anything in the past. He was already so nervous, so he didn't put pressure on others.

At this time, no matter what comforting words you say, what is fed back into the other person's mind is invisible pressure.

Zhao Ye walked out of the underground workshop and went to see the processing of silicon ingots.

At this time, the silicon ingot has expanded from the initial diameter of 30MM to about 50MM.The silicon ingot was produced by a factory in Shanghai.With the help of some information provided by Zhao Ye, they successfully made silicon ingots of this size.Although the purity of the silicon ingot still needs to be improved, it is at least usable, but the yield rate is lower.

But with Zhao Ye's bug, he can still handle a small amount of silicon ingots.

Zhao Ye fumbled for a while on the cut silicon wafers, picking up one for a while, and another for a while.Outsiders thought he was observing the cutting quality, but no one knew that he was handling wafers.

Can't really follow the real yield rate?That was too much torture.After passing through his hands, the yield rate immediately increased.If someone asks why, it means that they have caught up, coincidentally, and the other party has put their heart into production.

Another point is that the current wafer diameter is still very small, but Zhao Ye’s processing accuracy is far from enough, so Zhao Ye and others gave up the idea of ​​​​cutting the wafer into a rectangle, but made the chip into a circle. shape.

However, the circle also has the disadvantages of the circle, the most important one is that it is impossible to distinguish the direction and position.This is very inconvenient when processing and using.

So Zhao Ye thought of a way, since the perfect circle is not good, then give it a knife.So there is the current wafer, and each piece is cut off with a [-]-degree arc, which is to turn the fan-shaped area of ​​the entire cross-section into a triangle.

In this way, the side that is connected together is directly above. In addition, for the needs of positioning, three small gaps of different shapes are opened on this straight side and below it.In this way, all aspects of processing can clearly know the front and back sides and direction of the wafer.

After breakfast the next day, dozens of people came to the underground workshop. Everyone wanted to witness the production of the first such large-scale integrated circuit.Even the ** Daily sent a special photojournalist, a video camera and a camera, which were set up on one side of the lithography machine.

Zhao Ye and Ma Hua were the first to start trial production.The camera clearly recorded the first silicon wafer that Zhao Ye picked up.

Since it is a trial production, the circuit design is actually not very complicated.However, in order to verify some technologies, some places are designed in a relatively fine and complicated way.But even so, it took a whole day for this group of 30 yuan wafers used for testing to leave the workshop.

When the first wafer was simply packaged, it was immediately taken to a special testing instrument by the testing group waiting aside.After waiting for a while, everyone watched one wafer after another being placed on it, and everyone's hearts were in their throats.

"The report shows that there are a total of 30 yuan of silicon wafer circuit boards in the test sample, of which 20 yuan have met the requirements, five failed due to the purity of the silicon wafer, and five failed due to production problems. Our yield rate reached 66.66 %! We succeeded!"

"Oh!!! It's a success, it's a success!" Everyone applauded and jumped up, even the soldiers at the gate were very excited. If it weren't for the regulations, they would probably want to shoot a few shots into the sky to enjoy themselves.

At this moment, the camera didn't stop. Although the camera reporter was very excited, he still knew his duty and stayed behind the camera faithfully, but his hands were shaking a little. Fortunately, he brought a stand. Can't even see the screen.

After the trial production of the lithography machine, it was adjusted for a few days.This was put into the production of display chips again.Zhao Ye didn't do it himself this time, but let Ma Hua and other technicians take over the operation.It is certain that they are unfamiliar, and it is certain that they waste materials, but everyone has a process of proficiency, Zhao Ye can't do it by himself every time, can he?To cultivate talents, you have to pile up materials and time!There are no shortcuts.

The commissioning of the lithography machine gave great encouragement and pressure to the design team.The design work on their side has not yet been completed, but the production team has already put into production. Isn't this like a soldier holding a weapon and waiting for ammunition?

This gave the design team a great sense of urgency. Zhao Ye saw it, but he wasn't in a hurry.Because the complete design drawing is already lying in his space at this time, and he has even finished processing the mask.

Zhao Ye was not in a hurry to take out the things, the design was just to force them.

Zhao Ye continued his walks in each group, showing that the progress of the group was the fastest. In this aspect, there was Zhao Ye's mature design plan, but it was more about the support unit but it was awesome! The 718 factory is really not built. From technical experts to senior technicians, the overall level is much higher than other units!

They have already completed the liquid crystal filling process, and now they are concentrating on the circuit etching of the glass plate. If they can understand this technology thoroughly, Zhao Ye is sure that their factory can live for 50 years without any problem!Because this technology is the foundation of future liquid crystal technology.In the future, if they have such a patent, they will be paid for doing nothing.

There was nothing important today, so Zhao Ye wanted to go home early. During this time, he either left early and returned late, or he couldn't go back for several days in a row.Father Han and his family came over and said that they wanted Zhao Ye to get closer to them.But where does he have so much time?

Taking advantage of the lack of things to do today, he hurried home.Unfortunately, today Ding Qiunan took a few children out to play, and only Mother Han was at home.

"Mom, why didn't you follow?" Zhao Ye rarely used his last name when calling them now.After all, Zhao Ye both respected and touched Han Papa and Han Mama.For so long, they really gave him the warmth of family.

"I've stayed in the capital for a while, and I've seen everything here, so I don't want to go again." Mother Han didn't tell the truth, and Zhao Ye didn't care.The nature of her work determines that she cannot live like a normal person.

"Yezi, I have something to discuss with you. I was planning to go to your place sometime, but you just came here today. I want to ask your opinion in private first."

Zhao Ye was taken aback, and asked in private?How should this be understood?

"Tell me, why do you still want to ask my opinion?"

"My task has been completed. With the approval of the organization, you have the right to know about this matter. Now there is something that needs your opinion." Mother Han's expression became a little serious, but she did not lose the smile on her face.

"Well! Say it."

"If we provide high-quality transistors to the outside world, will it harm us? You are a professional, and I want to hear your thoughts."

"Oh! This, I don't think there will be any harm." Zhao Ye first came to a conclusion, and then continued: "First of all, this is not a great thing. Our current new technology only improves the quality of the product. And the yield rate, nothing fundamentally changed, so, according to the merchants, our product is only more cost-effective.”

"Well, this one is. What else?" Mother Han continued to ask.

"What's more, this matter is not only harmless, but it is a promotion for us, allowing us to maintain the motivation for improvement. Whether it is product development and production, this is endless. Only by maintaining progress can we always stay ahead of our competitors."

Mother Han nodded, which was roughly the same as the organization's thinking.There is another point that they didn't mention, that is, the profit of this product is very good. It is much more cost-effective for us to export this product than to export minerals.A few containers used to earn more foreign exchange than a whole ship of minerals.

"Then do you think that your calculator can be exported?" Mother Han asked further.

(End of this chapter)