Daguo Science and Technology started from the copycat system

At this time, the person in charge of the fab faced Lin Chen's questioning words, and saw him pondering for a while, and then slowly replied:

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

Is it just three nines in purity? Lin Chen nodded to show that he knew.

In the previous life, the purity of electronic-grade polysilicon, that is, the purity of the wafer, has been able to reach the level of nine nines.

At this time, it is a pity that the wafer purity of this fab can only reach three 9s. It is no wonder that the 130nm yield rate of this chip factory is so low, so difficult to improve.

After all, the foundation determines the upper limit. The higher the purity of the wafer, the better the foundation is, and the easier it is to build a house.

At this time, the purity of the wafers in this fab is only three nines. It is naturally difficult to improve the yield rate, just like building a house on a tofu foundation.

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

At this time, Lin Chen has clearly realized why it is so difficult to improve the yield rate of 130nm products.

I also understand why the yield rate of the 180nm and 350nm products that have been mass-produced is so low, only about 80%.

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

Thinking that it has only been a few years since the factory was built and put into production, Lin Chen also expressed understanding for the low purity of 8-inch wafers. After all, the improvement of wafer purity is not something that can be achieved overnight.

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

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

"Is the monthly output 70,000 pieces? The good product rate is only 97%."

Lin Chen muttered these words, his eyebrows furrowed slightly.

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

If these 70,000 wafers are all used to produce 130nm MCU single-chip microcomputers, according to the tiny volume of MCU single-chip microcomputers.

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 cuts is quite large.

Among them, if the design requirements of high-performance MCU are followed, the chip size of the MCU microcontroller will inevitably increase.

Therefore, according to the minimum of 1,000 pieces, if the yield rate can reach 99.99%, then about 70 million high-performance single-chip microcomputer chips can be produced every month.

The monthly production of 70 million MCU single-chip microcomputer chips is theoretically a lot, but it is impossible to produce 70 million mobile phones for the production of mobile phone chips.

Because the volume of many chips in mobile phones is much larger than that of MCU single-chip microcomputer 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 dozens of small chips, large and small.

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

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

Of course, the specific number is currently unable to give detailed data, and it needs statistical verification by a dedicated person, and the number of mobile phones that can be manufactured varies with the yield rate.

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

The good product rate is only 97%, which means that out of 100 wafers, three of them are unqualified and need to be eliminated and wasted. This is simply a heart-wrenching thing.

In the previous 8-inch fabs, the general yield rate could reach 99%, that is to say, only one wafer out of 100 would be wasted, but at this time the yield rate was only 97%, which is simply too bad.

After all, in this era, the market price of each wafer is about several hundred dollars, and the loss of these three wafers is equivalent to thousands of dollars.

But even though he was in a bad mood at this time, Lin Chen didn't say anything. Instead, he observed the fab carefully and then 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.

The three chip production lines have their own independent production workshops, and trees are planted at a distance from each other to prevent the vibration in their respective factories from affecting the yield rate of chips.

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

Although each production plant more or less has the backbone or the first and second leaders being poached away, the people who stay can still barely support the production and operation of the factory.

In this regard, Lin Chen was relieved and gritted his teeth in anger at Motorola's despicable behavior.

Of course, those who gritted their teeth with anger also included fellow chip foundries in Asia such as Zhongxin International, TSMC, and Sanxing Electronics.

After all, if Motorola just let go and approved the resignation of those people, and let those people get poached, they will use Sugon Technology.

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

But at this moment, no matter how angry Lin Chen was gnashing his teeth, there was nothing he could do. Under this anger, Lin Chen's fighting spirit was even higher.

Don't they think that Suguang Technology will not be able to produce chips after poaching many backbones and first and second leaders?

Then Lin Chen will prove to them that even though many talents have been poached, Suguang Technology is still good, and even better than before!

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

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

After all, the more advanced the chip, the better. The more advanced, the more expensive and less popular.

On the contrary, the most suitable cost and performance are the most suitable for the public, so that the sales volume is higher and more people can use it.

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

If the yield rate can reach more than 99.9%, then Guanggao can still earn a lot of income with these two manufacturing processes.

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

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

If only relying on 180nm and 350nm foundry chips and self-owned chip sales business, it may be able to support the chip factory on its own and support the cost of increasing the 130nm yield rate.