Rebirth of Northland Technology

As soon as Qian Dezhi reported, he was confessed as "Huge Tech", that is, the fact that the general manager of the LED company was shocked.

As soon as the LED company was born, it already had a big name.

After rounds of publicity reports, the large LED screen has become a news outlet. The latest achievements of Bingcheng in the high-tech field are the brainchild of generations of scientific researchers.

The large screen in front of the main building is temporary.It stands to reason that the assembly should be dismantled as soon as it passes, or at least it should be deactivated.

It has overfulfilled its task.There are many LEDs, even circuit boards, to be honest, the quality is not very reassuring.

During the conference, every night in the middle of the night, in the dead of night, there are always a lot of dark shadows climbing up and down for maintenance.After all these three days went on smoothly, everyone wanted to take a break.

But this move was met with double resistance from the school and Bingcheng.

The large color screen has become a brand new tourist attraction in Bingcheng.No matter who comes to Bingcheng for business trips or visits, the hosts always pull the guests here for a stroll.

There is no alternative, LED companies can only compromise.Every night, from 8 to 8:30 light up for half an hour, it is an explanation for everyone.

It is in this case that the position of general manager of Huge High-tech, LED large screen company, is just like this?

When so many people heard the news, they were shocked.

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In his place, he must seek his own government.

Although Qian Dezhi still couldn't believe his adventures, it was his instinct to try his best to prove himself.Working hard is the best choice.

I was selected because of my ability.I met Bole because I am a thousand miles horse!

The company's current first task is the relocation and commissioning of the production line.

The LED production line started with the manual jig production line of version 1.0.However, as time went by, part of the process of this production line was gradually replaced by various test equipment sent by the manufacturer, and gradually became a hodgepodge.

This kind of gradual upgrade has strong adaptability while LED technology is still undergoing drastic changes.While other manufacturers are still comparing and researching the best process route, millions of optoelectronic samples have been produced.

But this approach has also caused the product quality to be completely uncontrollable.

For example, on the production line, there are three MOCVDs produced in different periods working simultaneously.Since each device is not produced in one period, its internal structure is different.During operation, the required process parameters, such as the ratio of raw materials, time, and temperature, will be quite different.

This gap, coupled with the randomness of the operators, for example, the day shift and the night shift are different, and today and tomorrow are different.As a result, there are several different versions of the epitaxial wafer produced every day.

In the era of manual processing, this problem can be tolerated, but when it comes to large-scale industrial production, the problem must be solved.

The relocation of the production line is also a process of straightening out process equipment and process flow.

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LED company, meeting room.

"Why are there four lithography machines?"

Facing the equipment process layout drawing, the new general manager raised questions.Qian Dezhi is a material professional, and he has made up some relevant professional knowledge fiercely. By posing as a technician, he can also fool many people.

In the LED production process, generally speaking, the bottleneck of output is MOCVD.Because the processing of epitaxial wafers is batch processing, it takes a long time.Especially this generation of equipment cannot be processed in batches.Using several MOCVDs at the same time has become everyone's consensus.

However, there is no need for multiple lithography machines on one production line.

"This is Xiaocheng's opinion."

Wang Qingshan was also puzzled by this waste of lithography machines.From the perspective of productivity, a lithography machine is sufficient.Even for backup considerations, two lithography machines are sufficient.

"He calls this arrangement the immovable as mountain method. His goal is to replace automated equipment with a bunch of equipment with a single function."

"Stop as a mountain?"

Although Qian Dezhi is not a high school player, the level of players who can stay in school is not too bad.Now he actually encountered cognitive impairment.

With the progress of the times, the degree of automation of equipment is getting higher and higher.Especially for things like lithography machines, the cost is relatively high.A machine that can be reused, why not reuse it.

During the processing of LED chips.The lithography machine appeared four times in the whole process.

The first time was "Etching". On the epitaxial wafer, the high platform of the LED die was etched.

The second time appeared in the process of plating ITO transparent conductive film, and the third time was to plate P and N electrodes.The last time is the Si02 protective layer.

These four processes are relatively simple and can be completed with the same lithography machine.

At present, the practice of using four lithography machines, each to complete a single function, is incomprehensible.

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"Where did he see this method, or did he create it himself?"

Qian Dezhi didn't dare to complain about his boss, so he had to make a roundabout sarcasm.That person's name shines in the LED field.If anyone finds out that he is wrong, go back and take a good look, it must be a temporary worker who has remembered it wrong.

Wang Qingshan did not answer the conversation, although he was totally unacceptable to this kind of crafting idea.

Want to avoid operating errors caused by mask replacement, is it not easy?Just make a simple border.At that time, once the things are aligned, this will be solved!

Wang Qingshan's identity is relatively detached, and his words are very powerful.He is probably the only person in the photoelectric system who can question Cheng Yongxing.Because of this, he became more cautious in his words and deeds.

The two people also discussed the matter, but Cheng Yongxing insisted on this process arrangement.The matter is so settled.

One mission of the LED production line is proof of concept.This is true in the fixture era, and it is still true in the equipment stage.

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With the increasing expansion of the Optoelectronics Group, its influence is increasing day by day, so that in China's semiconductor industry, a new process layout method is quickly formed.The Law of Immobility as a Mountain.

The core of this method is to abandon automatic control as much as possible for all equipment, and each process is only responsible for a simple process step.

This process and equipment layout method is very popular among equipment suppliers.

Only one piece of equipment is required for the process position, and now several or even a dozen identical equipment are needed to complete.

More importantly, because the mechanical movement, detection, calibration and other functions required for automatic control are cancelled, the difficulty of manufacturing the equipment is greatly reduced.

This method still played a positive role in the early growth of optoelectronic research.

The strategy of optoelectronic research is to run in small steps and iterate the technology every few months.The development cycle of automation equipment is long, and it can't keep up with this iteration speed.

But with the passage of time, its negative effects have gradually emerged.The production line laid out with this core idea, even with the low price of domestic equipment, has gradually become unaffordable.

The total cost of the production line includes not only the equipment purchase cost, but also the equipment layout cost.

Where can I put the equipment?Let's ask for the plant area.The area of ​​the plant is large, should the power of the air conditioner be increased?The power of the air conditioner has increased, so the power consumption should increase.

A series of follow-up questions derived from this have become the target of verbal criticism by later scientific researchers.

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In fact, Cheng Yongxing's approach is in line with the core of BYD's reactionary approach.That is to reduce the automation level of the equipment by extending the process chain.

In Japan, a battery production line, with the help of automated equipment, requires only 20 people for the entire production line.But in the hands of BYD, a production line with the same function requires as many as 1,000 workers!

The reason for insisting on this approach is also forced by the current level of equipment processing and manufacturing.

Due to the gap between domestic precision machining and automatic control, apart from the dumb ways to waste money, from a programmer's point of view, there is no solution at all.

The more traditional industries, once the gap is widened, the harder it is to catch up.Because in these industries, there is no golden finger.

There is no way for machines, but people have ways.

Human beings are the spirit of all things, and any fine operation can be completed.At this stage, it is completely feasible to use human action instead of automatic.

And this method cannot be learned by other countries!

In the era of great lay-offs, so many skilled workers were wasted.These human resources are the confidence to support large-scale human production lines.

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Of course, time is more important.

Information is money, and the number of cheats is also limited.

With traditional methods, it takes more than a year to build a production line, and it is impossible to develop by leaps and bounds.

If everyone builds the line speed, they are exactly the same.Then if you build one, others have more money, and he can build ten. How will this battle be fought?

In this case, the only correct way to deal with it is to iterate quickly and continuously launch new products.

Every iteration will let those who follow behind, and the production line will become obsolete before it is completed!

This is the same as LED technology, and no one dared to follow it several times.

When the products cannot be sold, what is the point of talking about yield, capacity, and automated production level?