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Chapter 197 20 Inch Silicon Wafer

Now manufacturing chips is basically four steps: first, wafers must be manufactured, then photolithography, doping after photolithography, and packaging and testing after doping.

These four steps are one after another, in order from left to right, and there can be no mistakes.

These four steps are all very difficult, but the most difficult of them is of course photolithography, because this step requires a photolithography machine, which is what we currently lack most.

Relatively speaking, the simplest is the last link of packaging and testing.

Encapsulation testing is to check whether it can be used, and the performance does not meet the requirements, which is very simple.

There are roughly two types of wafers currently on the market: one is eight inches, and the other is 12 inches.

This leads to two types of chips: eight-inch chips and 12-inch chips.

The eight inches and 12 inches here refer to the size of the wafer.

However, with the development of the times, there are fewer and fewer eight-inch chips, and they are basically replaced by 12-inch chips.

12-inch chips are a trend and a trend.

The 12 inches and eight inches mentioned here refer to the diameter of the wafer.

The photolithography machine performs photolithography on the wafer, and then divides the wafer into small chips.

So the chips are photo-etched out on the wafer.

In fact, the manufacturing process of wafers on our planet is also in a state of confidentiality and monopoly, but with the continuous efforts of our scientists and researchers, we finally broke through the manufacturing process of wafers.

Now we can also produce by ourselves. We can produce 12-inch wafers and [-]-inch wafers.We will not ask others for wafers, but others ask for us.

It can be said that we are also in the position of monopolizing wafers.

Therefore, wafers are not considered to be manufactured by any country or company, which is also a symbol of strength.

Today's wafers are made of high-purity silicon.

In theory.The size of the silicon wafer is, of course, the bigger the better.

Because the chip is photoetched on the silicon wafer, the larger its diameter area, the greater the number of chips produced, and the fewer scraps left.

This will save more money.

A silicon wafer may waste very little material, but don't forget the huge number of chips.

The scraps of these wasted silicon wafers will accumulate and become more, and when the number of chips increases, it will be a very considerable waste.

Don't underestimate these wastes, especially when ordering in bulk.

When buying in large quantities, dedicated buyers often negotiate prices by the penny.

A dime, a penny, a cent, we don't care.This sounds very little, but what if it is 1 million pennies?
No matter how small the original unit is, when the quantity reaches a huge number.This is a scary number.

Now the size of the chip market has reached 600 billion, and it is still in meters.

Let's think about what a terrifying market this is, what a huge market.

so now.The vast majority of countries are trying to increase the size of the wafer, because the larger the size, the better.More chips are produced.Also be more frugal.

The size of mature silicon wafers on the market is 12 inches.

This can be regarded as getting out of the laboratory, and now it has entered the factory.It can also be produced on a large scale.

Since Zhang Xingchen wants to make chips and silicon wafers, the 12-inch silicon wafer is naturally not Zhang Xingchen's goal. His goal is a larger silicon wafer, which is a 20-inch silicon wafer piece.

He wants to do what others can't do, so that he can be competitive and valuable.Only then can it be Zhang Xingchen's target.

In fact, it is now possible to produce 20-inch silicon wafers in the laboratory.But it is a pity that the pass rate is very low and mass production cannot be achieved at all.

Can't get out of the lab.Let alone enter the factory and produce on a large scale in the factory.

Judging from the current technology, if a 20-inch silicon wafer wants to get out of the laboratory and enter the factory, it needs at least ten years of technical precipitation and technical accumulation.

And Zhang Xingchen's goal is to make it ten years ahead of the operating laboratory.Enter the factory and walk into everyone's life.

...Star Company Headquarters.At this time, a 30-year-old woman with long hair and red lips came to the center of the hall, holding a loudspeaker, amplified her voice to the sky and shouted to the sky: "Zhao Chaoyi, come out for me. You want Be responsible to me, won’t you recognize anyone when you lift your trousers?”

"You made my belly bigger, do you want to walk away?"

"I called you but you didn't answer, I sent you a text message but you didn't reply, I sent you a voice message but you didn't answer it, I sent you a video message but you didn't answer it, what on earth do you want to do?"

"Aren't you responsible to me? Even if you are not responsible to me, don't you want to see your child?"

"That's right! I'm pregnant!"

"That's right, I'm pregnant with your seed."

The sound was so loud that even Zhang Xingchen heard it.

"Ahem, lady, please be quiet. This is the company. If you have anything to say, please go home and talk about it..." Two security guards stepped forward, but they were very polite to the girl.

Not only because the lady said she was pregnant, but also because a person's name was mentioned in her words, Zhao Chaoyi.

This is the top management of the company, and their little security guards can't afford to offend them.

This made it difficult for them too.

"No, I want to see Zhao Chaoyi. If I don't see Zhao Chaoyi today, I won't leave." The woman was very stubborn.

"Zhao Chaoyi, if you are a man, come out!"

"A man, a real man, does what one does and is responsible for one."

Soon Zhao Chaoyi ran over with an embarrassed look on his face and said to the woman: "Why are you here? This is where I work. Stop messing around and go back quickly."

Zhao Chaoyi's face was a little anxious, this matter was a shame.

At this moment, Zhao Chaoyi could completely imagine how his colleagues and subordinates would talk about him behind his back.

But the lady held out her belly and said, "Do I want this? Tell me how many times I called you and you didn't answer. What on earth do you want to do?"

"What do I want to do, or what do you want to do?"

"I beg you, look at so many people watching around, go back quickly, can we talk about it in private?"

Zhao Chaoyi said almost pleadingly.

He lost face today.

"No, I'm going to be in front of everyone today. Let me tell you clearly, what exactly do you think? Are you responsible for me?"

"Are you responsible for the child in my belly!"

(End of this chapter)