At this time, the person in charge of the wafer factory faced Lin Chen's questioning words, only to see him groan slightly, and then slowly replied:

"At present, the purity of our wafers is 99.999%, which can barely meet the production of 130-nanometer chips."

Is it just three nines of purity, Lin Chen nodded and said that he knew.

In the previous life, the purity of electronic-grade polysilicon, that is, the purity of the wafer, could already reach the level of 9 9s.

At this time, it is a bit regrettable that the purity of the wafer wafer of this wafer factory can only achieve three 9s, and it is no wonder that the 130nm yield rate of this chip factory is so low and so difficult to raise.

After all, the foundation determines the upper limit, and the higher the purity of the wafer, the better the foundation is laid, and the easier and more stable it is when building a house.

At this time, the purity of the wafer wafer in this wafer factory is only three nines, and it is naturally difficult to improve the yield rate, just like building a house on the foundation of a tofu dregs.

After a total of more than 1,000 procedures in chip production, one link affects the yield rate, how can the yield rate of the final chip be not bad?

At this time, Lin Chen had already realized why it would be so difficult to improve the yield rate of 130 nanometers.

I also understand why the yield rate of 180 nm and 350 nm, which can be mass-produced, is so low, only about 80%.

It is estimated that a large part of the problem is that the purity of the wafer is too low.

Thinking that the construction of this factory has not been put into operation for a few years, Lin Chen also expressed his understanding that the purity of 8-inch wafers is so low, after all, the improvement of wafer purity is not an overnight thing.

In this regard, the person in charge of the fab on the other side did not finish his words, but he continued to say other data after he finished talking about purity.

"At present, the monthly production capacity of our wafer factory can reach 70,000 pieces per month, and the yield rate can reach 97%."

"Is it 70,000 pieces a month? The yield rate is only 97%. ”

Lin Chen muttered these words, his eyebrows slightly locked.

These two figures are actually not good numbers, first of all, the monthly output of 70,000 pieces seems like a lot, but it is actually nothing.

If all these 70,000 wafers are used to produce 130 nanometer MCU microcontrollers, according to the small size of MCU microcontrollers.

According to the different performance requirements and size requirements, they can produce about 1,000 to 10,000 chips, and the difference in the number of chips cut out is still quite large.

Among them, if the design requirements of high-performance MCU are followed, the chip volume of MCU single-chip microcomputer will inevitably increase.

Therefore, according to the minimum 1000 pieces, if the yield rate can be 99.99%, then about 70 million high-performance MCU chips can be produced every month.

This monthly output of 70 million MCU single-chip chips is theoretically a lot, but it is impossible to create 70 million mobile phones when used to produce mobile phone chips.

Because the volume of many chips in mobile phones is far larger than that of MCU single-chip chips, and there are many things that need to use chips on mobile phones.

Not to mention the smartphones of the previous life, the current feature phones alone have more than a dozen small chips, large and small.

In addition, there are large mobile phone CPU chips and mobile phone GPU chips, mobile phone communication chips, running memory chips, flash memory chips......

At this time, if the monthly production capacity of 70,000 wafers is used to make mobile phones, then Sugon Technology can only supply about a few million to 20 million mobile phones per month.

Of course, the specific amount cannot be given at present, and it needs to be statistically verified, and the number of mobile phones that can be made is different with different yields.

The second most troublesome data is the problem that the yield rate of wafers is only 97%.

This yield rate is only 97%, that is, three out of 100 wafers are substandard products and need to be eliminated and wasted, which is simply a painful thing.

In the previous life, the yield rate of 8-inch wafer factories was generally 99%, which means that only one wafer for 100 wafers will be wasted, and the yield rate is only 97% at this time, which is simply too poor.

After all, in this era, the market price of each wafer is about hundreds of dollars, and the loss of these three wafers is equivalent to 1,000 or hundreds of dollars.

However, although he was not in a good mood at this time, Lin Chen did not say anything, but carefully observed the wafer factory and then quickly went to other chip factories to inspect.

For example, I inspected the 350-nanometer chip production line and the 180-nanometer chip production line, and finally inspected the most deserted 130-nanometer chip production line.

Each of the three chip production lines has its own independent production workshop, and trees are planted at a distance from each other to prevent the vibration in their respective factories from affecting the yield of chips.

After that, Lin Chen went to inspect the chip packaging and testing workshop, and after the whole inspection process, Lin Chen found that he had indeed bought a relatively complete chip factory.

Although there are more or less backbones or one or two leaders in each production plant who have been poached, the people who remain can barely support the production and operation of the factory.

In this regard, Lin Chen was relieved and gritted his teeth angrily at the original despicable little action behavior of the motorcycle gong.

Of course, the objects of gnashing their teeth in anger also include Zhongxin International, TSMC, and Sanyi Electronics, which are Asian chip foundry colleagues.

After all, if Moto Gongla just let go to approve the resignation of those people, and let those people be poached, a pit of Dawning Technology.

The chip foundry peers of Zhongxin International, TSMC, and Sanyi Electronics are the culprits behind the scenes.

However, at this time, no matter how angry Lin Chen was, he couldn't help it, and under this anger, Lin Chen's fighting spirit was even higher.

Don't they think that after poaching many backbones and first- and second-in-command, Sugon Technology will not be able to produce chips?

Then Lin Chen has to prove to them that even if many talents are poached, Shuguang Technology is still good, and it will be better than before!

During this time, Lin Chen is ready to focus on this chip factory, and Lin Chen needs to improve the yield rate of chips.

It is not only necessary to improve the yield rate of 130nm chips, but also to improve the yield rate of 180nm and 350nm process processes.

After all, in the final analysis, chips are not the more advanced the better, and the more advanced it is, the more expensive and niche it is.

On the contrary, the right cost and performance are the most suitable for the public and the most popular, so that the higher the sales can be used by more people.

180nm and 350nm are undoubtedly backward process technologies, but they are actually the most popular manufacturing processes.

If the yield rate can be more than 99.9%, then Guanggao's two processes can still earn a lot of income.

After all, the yield rate of 80% can already make a small profit, if Sugon Technology can increase the yield rate to 99.99%.

Then make money by making 180nm and 350nm chips for others, or designing some MCU single-chip chips or other chips for sale.

Relying only on the 180nm and 350nm foundry chips and independent chip sales business, it may be able to support the chip factory and support the cost of 130nm yield increase.

(End of chapter)