Shenhao started after the college entrance examination

Facing Ma Long's inquiry, An Liang thought about it for a moment and decided to reveal the information. After all, this was not confidential information.

Anliang: The chip yield rate of dark core technology in the 14-meter node process technology is very high, reaching a yield rate of 93%.

An Liang: In the past, Taichi’s chip yield rate at the 14-meter node was only 85%.

An Liang: Of course, Taichi's yield rate at the 14-meter node was low, and there were other factors. Taichi's technical problems were not the only ones.

Lu Wenshan: Curious!

Lv Wenshan: Brother Liang, why is Taichi’s yield rate of 14 meters not high?

Shen Shizhong: I’m also very curious.

Shen Shizhong: Because I happen to know that Taichi’s yield rate in 7nm has reached a high of 92%.

Shen Shizhong: In addition, Taichi’s current yield rate at the 5-nanometer node has exceeded 95%.

Shen Shizhong: Logically speaking, whether it is the 7-nanometer node with 567 points or the 5-nanometer node, the process difficulty of these two nodes should be higher.

Malone: ​​Yes, I think so too!

Ma Long: Brother Liang also said just now that the 14-meter node chip has only more than 2,000 process steps, but the 7-nanometer node chip process has soared to more than 5,000 steps.

Malone: ​​Now here’s the question. Although the number of processes has increased by more than 3,000, the yield rate has also increased. What’s the reason for this?

Facing the inquiries from the three sons in the dormitory, Anliang did not hesitate and responded to the message.

An Liang: There are multiple reasons for this problem.

An Liang: First is the first and most critical reason!

An Liang: When transitioning from 14 meters to 7 nanometer nodes, Taiji Electronics changed the lithography equipment.

An Liang: The 14-meter optical technology equipment is a DUV ultraviolet lithography machine, but Taiji Electronics replaced the EUV ultraviolet lithography machine at the 7-nanometer node.

An Liang: The EVU ultraviolet lithography machine has higher equipment precision, and the yield rate is naturally higher.

An Liang: The second reason is that at the 14-meter node, competition among fabs was still very fierce.

An Liang: At the 14-meter node, Taichi had two strong competitors, namely Intel and Sansang. They both competed with Taiji at the 14-meter node.

An Liang: Taiji Electric did not want to fall into such competition, so Taiji Electric gave up the competition at the 14-meter node stage, saved a lot of research and development costs, and directly entered the 7-nanometer node.

An Liang: It was precisely because of this decision of Taiji Electric that Taiji Electronics easily defeated Intel and crushed Sansang Group in the subsequent node war.

An Liang: In addition, there is another reason why Dark Core Technology's yield rate at the 14-meter node exceeds that of Taichi.

An Liang: The lithography machines used by Taichi at the 14-meter node were all old equipment from the previous generation, so they were lacking in accuracy.

An Liang: However, the DUV UV lithography machines currently used by dark core technology are all the latest generation equipment, even high-end DUV UV lithography machines that can assist EUV lithography machines to produce 7 (cidd) nanometer node chips.

An Liang: Due to various reasons, Dark Core Technology’s yield rate at the 14-meter node finally exceeded that of Taichi.

An Liang explained in detail from many aspects that it was not that the technical strength of Dark Core Technology Company exceeded that of Taiji Electric, it was just that the two parties had different development focuses and made their own choices.

If we forcibly use the current 14-meter node process of dark core technology to benchmark the 14-meter process of Taiji Electric, it will feel like Guan Gong fighting Qin Qiong.

That is a comparison of misplaced time and space, so how to calculate it?

An Liang: In fact, when Dark Core Technology reached the 7-nanometer node, its chip yield rate dropped significantly, which was far inferior to Taichi's yield rate.

An Liang: The data just given by the gentleman is very correct. Taichi’s chip yield rate at the 7nm node is as high as over 92%.

An Liang: However, the chip yield rate of dark core technology at the 7nm node is only about 85%, and it is difficult to improve this figure.

Shen Shizhong: Is it also because the photolithography machines are different?

Lv Wenshan: I read reports on the Internet that dark core technology does not have EUV ultraviolet lithography machines.

An Liang: Bald Eagle prohibits the sale of EUV extreme ultraviolet lithography machines to our Xia country. Have you forgotten this?

An Liang: However, even if dark core technology does not have EUV ultraviolet lithography machines, the yield rate of dark core technology at the 7-nanometer node is not particularly ideal. However, the existence of dark core technology has somewhat alleviated the pressure of chip blockade.

An Liang: More importantly, Dark Core Technology is currently fully investing in the entire upstream and downstream industry chain of chip manufacturing.

An Liang: Bald Eagle’s technological blockade in the chip field can only make us pay more and more attention to the independent research and development of chips.

An Liang: Even though we are a little behind now, I believe we can catch up in the future!

An Liang is not talking about catching up in the field of silicon-based chips, but catching up in other chip fields. For example, dark core technology has invested hundreds of billions in the field of carbon-based chips!

Author: The new book [Double Crossing Door: Trading System of All Realms] has over 700,000 words, welcome to read it.