Rebirth of Northland Technology

"But what Lao Sun said is reasonable. You have entered the industry, and our strength is to integrate theory with practice. Isn't it just right for us to join hands?"

Seeing the young man in front of him nodded again and again, Zhang Qiang's conversation came to his head.Isn't this young man very easy to talk, he doesn't have the arrogance that a young student should have.

"As far as we know, you design the LED project and even the equipment yourself. Design a piece of equipment, yes, are you ready to do all the equipment of the production line by yourself? At this point, we can also help. "

Whether it is semiconductor materials or packaging, one of the important research directions is related equipment design.

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"Really! Can you help me?"

These days, Cheng Yongxing is indeed having a headache for this matter.Large-scale industrial production and laboratories are two completely different things.

In the laboratory, all goals are served around technical indicators, brightness, and luminous efficiency.But at the stage of industrial production, production efficiency, cost, and stability have become more important goals.

In the laboratory, many steps that can be processed by hand require special instruments or equipment at the stage of industrial production.

Taking the production of blue LEDs as an example, its production steps can be divided into three stages: front, middle and back.

The previous paragraph mainly refers to the processing of sapphire substrates.This part can be outsourced for the time being and will not be considered for now, but the middle and last two paragraphs cannot be avoided at all.

The middle section mainly refers to the production of LED chips.

This is divided into two major steps, one is epitaxial wafer production.It includes buffer layer growth, N-type GaN layer growth, multiple quantum well light-emitting layer growth, P-type GaN layer growth, and annealing.

The second is chip production, which includes etching, evaporation, PN electrode production, protective layer, upper pad, grinding and polishing, spot measurement, cutting, and inspection.

The latter part refers to the packaging of the LED chip, which also includes primer dispensing, chip placement, baking and solidification, gold wire bonding, mold potting, bracket insertion, mold release, post-curing, cutting feet, testing, packaging, etc. Process.

There are as many as 20 processes with first names and last names.In principle, each process requires independent equipment or equipment.

So these days, Cheng Yongxing is holding a few textbooks, and he has started the learning process of painting a gourd.This learning process is actually painful.Because he has no gold fingers.

He is now in the process of a blind man touching the elephant.Any mistake in the design of the production line in the early stage, even the slightest loss, will lead to a lot of mistakes after mass production.

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"Yeah! Come on, Xiaocheng, let me tell you, these things are very difficult for you..."

Soon, one old, one middle school, and one young, the three people started discussing enthusiastically.

"That's not right. Can't you use a laser for this cutting?"

"Use a laser? Where did you see it?"

"Sapphire is too hard, and the GaN material is too hard to cut with traditional methods, and the loss is too great."

In the process of discussion, Cheng Yongxing did not just study blindly. Many well-known technological processes of later generations still reflect their value from time to time.

"Okay. Since you insist, let's find out if there is any solution."

...

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Looking at the few people who were discussing in full swing, and the two directors who had nothing to do with them, they chatted for themselves.

"Old Xi! In the past two years, your published papers are not too few. But that is because you were lucky and encountered a good project. Your level of writing papers is not complimenting at all!"

Seeing that his hard work was not in vain, Zhang Qiang would be able to reap a lot of fruits immediately.

"How do you say this?"

Xi Zhanping was a spectator all the time and was very boring.The LED project has nothing to do with the inspection profession.

"In the case of Xiaocheng's paper, if we were to manipulate it, one paper would be taken apart and published seven or eight papers, there would be no problem at all. And not only that, the citation coefficients of these seven or eight papers , Each article will be higher than this one!"

Generally speaking, to evaluate whether a paper is important, one of the main indicators is how many times the paper has been cited.LED is now so well-known.It’s not easy to get a dozen papers with high citation coefficients around this topic!

"Yes."

"Of course. Old Xi. You have basically had this common problem in the papers of the testing major in the past two years. They only focus on results, not theory. If this goes on for a long time, the follow-up will be weak."

"Understood, thanks for your advice, we will study it later."

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"That's it for today. Xiaocheng, Professor Sun, we will study these things carefully later. Next time you come directly to our office, the conditions there will be better!"

Time flies quickly, and it’s lunch time in a blink of an eye.Director Zhang issued an order to terminate the growing enthusiasm.

Several guests turned to leave, but before leaving, Zhang Qiang looked at the reluctant young man and made a joke.

"Xiaocheng, or you just switch to our department!"

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"You are very excited today!"

After Xi Zhanping watched his disciple send the guests away, he went around the room and joked.

"Yeah, I didn't expect to have such a big gain today! I didn't expect the material to be so strong in the semiconductor field."

In the past two days, Cheng Yongxing has almost died of worry.

When he first started working on the LED project, he thought the school-run factory was a golden finger, but it turned out to be a handicap.Later, I discovered the instrument, but in the end, I found that it was also a club.

The production equipment for the LED project is actually nothing. After all, it is not too difficult. The general instrumentation industry can be competent for the production tasks of the corresponding equipment.The big deal is that Cheng Yongxing retrieved his previous work unit and commissioned them to design a production line.

But many subsequent plans have completely lost their support.

This time, there is no way out of the mountains and rivers, and there is still another village.With such a strong support, many things have hope of being resolved.

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"Actually, if you talk about the ability in the semiconductor field, the strongest is not the material department. Even as far as the semiconductor material itself is concerned, the strongest is not them!"

Director Xi’s words are amazing!

"Better than them?"

"Yes! And it's in our school!"

Xi Zhanping was disgusted today.Especially the last sentence, I dare to dig people directly in front of my own face.How can you endure this kind of thing?

"Who is that?"

"Let's go, let's have lunch together. After the meal, I will show you to the material office of the Aviation Academy. They must have the sapphire you mentioned."