Super Copy of Great Power Technology

Chapter 89 The terrifying yield rate

Women attach more importance to the family than men, and as the carrier of the family, the house is also given special importance by them.This is also the reason why most women ask to buy a house when they get married.Only when you have a house can you have a home, and only when you have a home can you have stability. This is a concept rooted in the bones of farming civilization. No matter how society changes, this obsession will not change.

After dinner, Qiao Ruida and Du Qingqing walked around the campus together to eat.But in the end, love lost to the temperature. The two only walked a few hundred meters before they hurriedly separated and returned to their dormitories.There is no other reason than it is too cold. On a deep winter night in the north, who knows who is cold.In the past, even if the weather was cold, the two of them could always find some warm places, either in the study room or the library.But after the holidays, most of the places on campus that are suitable for couples to go are closed, so that two people going on a date have nowhere to go except hitting the street.

Back in the dormitory, Qiao Ruida continued to work on the chip design. With the experience of designing the audio decoding chip last time, she was much more relaxed this time, and the progress was faster than expected. This is the difference between novices and veterans.Also, Qiao Ruida is no longer working alone this time. After he has figured out the chip architecture, he plans to give some less important modules to people in the R&D department as a means of accumulating cooperation experience.

The dozens of people recruited by the R&D department are not all responsible for designing casings and debugging sounds. A dozen of them are engaged in chip design.The sources of these people are somewhat mixed, including fresh graduates majoring in integrated circuits and veterans who have switched jobs from other chip design companies.What is everyone's technical level and whether they have real skills can only be seen when they actually design chips.

As time goes by, Moore's Law continues to advance. In the foreseeable future, chips will inevitably develop in the direction of becoming more and more powerful, more comprehensive in function, and lower in energy consumption.And this means more advanced processes, more transistors, and more complex architectures.Today's chip design industry has evolved from one or a few geniuses in the early stages of development to teamwork and group operations.Some large-scale projects, such as designing computer CPUs or graphics card chips, usually involve hundreds or even thousands of engineers working together to produce finished products in the shortest possible time.

Qiao Ruida has the bonus of a golden finger and has many advantages over others.If he just works alone, it is not impossible for one person to undertake all the steps of chip design.But then he can only work in the field of functional chips such as Bluetooth and audio decoding.In the field of large and complex chips such as mobile phone SOC, computer CPU, and graphics card chips, even if there are cheats, it is not possible for one person to master it.Think about it, a mobile phone SOC in later generations will have as many as a dozen functional modules and more than 100 billion transistors.For such a complex chip to be designed by one person, it would take only a few years to complete it.By the time you design the chip and mass-produce it, this chip will already be outdated. Because Moore's Law is always running, you will have been eliminated by the times if you stand still.

Therefore, multi-person collaboration and teamwork are the correct ways to start chip design.Qiao Ruida should be a leader and the role of chip architect is enough.

In her previous life, Qiao Ruida was a programmer who made a living by coding, so she was called a coder for short.Due to professional needs, Qiao Ruida works with keyboards almost every day. If you don't use a few mechanical keyboards a year, it means you are lazy.In this life, he changed his career to playing with hardware and started designing chips, which made him look so glamorous, beautiful, and noble.Unexpectedly, the work content of a chip designer is still typing on the keyboard every day, but the code has changed, from software code to chip HDL (hardware design language) code.Qiao Ruida sat in front of the computer, and the sound of the keyboard continued until late at night, and then disappeared.

After waking up the next morning, Qiao Ruida did not get up immediately. Instead, her consciousness entered the dimensional space to check the results of chip production.In front of him was a box of audio decoding chips that had been packaged and tested. They had just come off the production line and were freshly baked. There was even a trace of the smell left by high-temperature processing on them.Each chip is marked with the "RX-1" logo, which represents its identity, Rockchip No. [-] audio decoding chip. (Hey, this name always gives people an inexplicably familiar feeling. A certain company named Rockchip is innocently accused.)
"It took 200 six-inch silicon wafers to produce such a small number of qualified chips. The yield rate is too low!"

Qiao Ruida asked about the puppet projection of the final quality inspection and learned that there were only 312 chips with intact functions, and the yield rate was only a little over [-]%.This result was really beyond Qiao Ruida's expectation, and the yield rate was really too low.If a wafer foundry operates in this way, it will definitely lose money to the point of vomiting blood.

The last time we did tape-out testing at the Daxing campus, we used the same mask and the same production line, and the yield rate was over 2%.There is no reason for the same configuration to be moved to a dimensional space with a better environment. The chip yield rate will not be improved, but will be directly broken. Is it a problem of the operators?

Qiao Ruida looked doubtfully at the puppet projections standing in front of her, doing nothing.Their knowledge was instilled by Qiao Ruida, and the tasks were set by him.With Qiao Ruida's understanding of this production line, there will definitely be no problems with knowledge infusion and task setting.When it comes to the execution ability of puppet projection, it is comparable to that of industrial robots, and is definitely stronger than humans.

“If it’s not a problem with workers’ ability, then where is the problem?”

Qiao Ruida muttered to herself, and then quickly scanned the entire production line with her consciousness, trying to find out the reason for the decline in yield rate.

"Why do these puppet projections always feel out of place when standing on the chip production line? It seems that the color of their clothes is too bright, which is inconsistent with the basic tones of the surrounding light colors. By the way, the problem is with the clothes."

These puppet projections were all made by Goldfinger based on Qiao Ruida, including the clothes he wears every day, including jeans and a red sweater.If placed in other environments, it would be very normal for workers to dress like this.But this is a chip production line, a place with extremely strict environmental requirements.These puppet projections wear sweaters that shed lint at any time, walk around the production line, and touch the wafer surface from time to time. This is simply a nightmare and has a significant impact on the chip yield rate.

　The company is working overtime today and there is no next chapter
　　
　
(End of this chapter)