Thermal screen technology may sound like a tall new technology, but in reality, it is just a baffle that is added to the inside of the monocrystalline furnace and the heat is reflected back into the furnace as the heat in the furnace is lost upward.

Analogous to a thermos flask - if you want to have a better thermal insulation effect, it is natural to avoid heat loss in the bottle, and you need to have a better seal, for example, add a thicker silicone to the bottle mouth...... Although there is a difference of 108,000 miles between a single crystal furnace and a thermos cup, in the final analysis, the hot screen technology is a technology that enhances the thermal insulation performance of the furnace.

Historically, in the early days of the application of this technology, leading semiconductor companies such as Intel in the United States quietly adopted hot screen technology, but they kept it secret and quietly used this technology to reduce costs and increase production capacity. After more and more manufacturers tacitly adopted this technology, Intel and other companies registered hot screen patents.

After the patent registration of this technology, the diffusion of hot screen technology suddenly accelerated, because more manufacturers knew this concept and invested capital in research and development of related technologies.

Although China's semiconductor industry has been misled for many years, in 2001, the team led by Tu Hailing and Zhou Qigang, researchers of the Beijing General Research Institute of Nonferrous Metals, successfully developed a domestic fixed hot screen without a hot screen sample as a reference.

In fact, although Intel and other companies in the United States have registered initial patents for hot screen technology, it has not stopped competitors from adopting similar technologies in the slightest.

Because,This technology is actually just a idea,Others didn't expect it before,It's a great idea,But when this idea is known by the industry,Just need to know the term hot screen,You can develop a similar technology,At most, it is to bypass the existing patents,It takes a little effort。

And, even if it's 100% plagiarized, it's hard to detect. After all, this kind of technology is the technology used by the manufacturer in production, as long as the confidentiality work is done to prevent outsiders from accessing and collecting evidence, then no one will know about its internal production equipment and plagiarize other people's technical patents.

Comparatively speaking, patent protection laws are more likely to protect patents related to consumer products, and unless the products of competitors that infringe patents are not listed, once they are listed, the infringing part of the patent will definitely be discovered.

It's a very simple technology, but it's very meaningful. Taking energy consumption as an example, the average energy consumption of a 6-inch monocrystalline furnace with a 60 kg charging capacity is 120KH, and the energy consumption of a monocrystalline furnace is easily reduced to 90KH by using the most primitive fixed hot screen technology. In addition, the monocrystalline furnace with a hot screen can also significantly improve the growth rate of monocrystals, and the diameter size and yield rate of monocrystals are also greatly improved.

Later, on the basis of fixed hot screen technology, there was also a more advanced mobile hot screen, which directly reduced the energy consumption, and the energy consumption of the original single crystal furnace with an energy consumption of 120KH was further reduced to 60KH!

In later generations, the semiconductor industry exploded production capacity, and hot screen technology also made outstanding contributions. Later generations of consumers of electronic products are, in fact, also beneficiaries of monocrystalline furnace hot screen technology.

……

In July 1986, Meng Xin led the single crystal furnace hot screen technology, which quickly changed from theory to practical products.

This is not inherently difficult and not very expensive. In the domestic single crystal furnace that costs more than 5,000 yuan, a fixed assembly is added. Roughly, it only takes less than 10,000 yuan to transform a single crystal furnace into a new single crystal furnace with a fixed heat screen.

At present, the cost of imported monocrystalline furnaces is not less than 10,000 US dollars, which is more expensive than domestic monocrystalline furnaces, and the performance is far inferior to this new monocrystalline furnace with a hot screen.

This kind of equipment for 10,000 US dollars is actually scrapped after 3~5 times at most, and it needs to be replaced with a new single crystal furnace. Of course, there are single-crystal furnaces with a longer life abroad, which can be used about ten times, but they are prohibited from being exported to China. After a few decades, the life of a single crystal furnace can easily reach hundreds of furnaces or even longer. Of course, with the hot screen technology, the cost and efficiency of wafer production will reach a level unimaginable for semiconductor manufacturers in the 80s.

Of course, a single crystal furnace with a longer service life involves more complex material science, which cannot be easily made by making a design drawing.

"This technology is very powerful?" Lin Qi is not a science and engineering dog after all, so he only knows CPU, graphics card, memory, hard disk, display panel and other things that ordinary consumers can see and touch.

There is also the most complex lithography machine, because chip processing requires lithography machine, lithography machine is also the most expensive equipment in the wafer processing industry. The number of transistors that can be integrated into an integrated circuit mainly depends on the accuracy of the lithography machine. Therefore, even if you are a novice, you know that the lithography machine is very crucial!

Compared with the tall lithography machine, the monocrystalline furnace is very earthy, and few laymen pay attention to the development of monocrystalline furnace technology.

"Of course, it's amazing! It is not only the lithography machine that determines the performance and productivity of the chip, but also the capacity and quality of the wafer, which is also a very critical and important technology. Meng Xin smiled and said, "With this technology alone, you can save at least 30% of the cost of your chip! Higher quality wafers will also make the yield rate of chip processing higher and better performance! In fact, in the short term, the technology of the lithography machine has not made a breakthrough, and the technological breakthrough of the single crystal furnace alone is enough to greatly improve the chip production capacity, performance, cost and other indicators!"

"So powerful!" Lin Qi was not only surprised.

Even if I help you improve the lithography machine technology now, it is conservatively estimated that it will take more than a year to achieve results. Meng Xin said, "Moreover, I am going to develop a 2~1.5 micron lithography machine for you now, which is a serious waste of valuable scientific research resources." Follow the example of international manufacturers, and your current team will be fine. My team, starting directly from 1 micron, developed projection lithography machines! I visited the factories of Xinjike Semiconductor and Lishan Semiconductor, both of which are close lithography machines, technology from the 70s, and now the mainstream. However, the potential for technological upgrades is limited, so it will soon be replaced by projection exposure lithography machines!"

Lin Qi nodded, knowing that Meng Xin was countless times stronger than himself technically.

Meng Xin, who has future technical information as a reference, may be the world's most powerful technology expert.

The industry insider has just had a preliminary idea, she has a clear understanding of the future technology development trend, many of which are now confidential technologies, and will be publicly available information in the future.

……

In July, under the forcible promotion of Lin Qi, the new venture semiconductor company began to officially promote the hot screen monocrystalline furnace on a large scale.

Although, at first, some technicians were stubborn and felt that it was a bit risky to adopt a technology that they had never heard of before.

But just a week later, the opposition died down.

Whoever is against it, the front-line technicians on the production line will knock their dog's head!

Because, the benefits of hot screen technology, that is immediate!

The single-crystal furnace with hot screen technology not only saves 25% of the electricity bill, but also the diameter and length of the single-crystal rod far exceed expectations. Originally, it was used for the experiment of a 4-inch single crystal furnace, and the wafer diameter produced by this single crystal furnace should be 101.6 mm, but in fact, the diameter of the wafer produced actually reached 117 mm, although it did not reach 6 inches, but it was also considered a 4.5-inch class!

The wafer is directly larger, which is not only a matter of increasing the raw material capacity, but more importantly, compared with the 4-inch wafer, the yield rate of the chip processed by the larger diameter wafer will also be higher.

It seems that the current 6-inch monocrystalline furnace in the international market is also prohibited from being exported to China, and the original 4-inch monocrystalline furnace also needs to be imported. However, the sudden rise of new entrepreneurial electronics has promoted the development of the domestic semiconductor industry. And because there are orders from Xinchuang Electronics, there is enough motivation in China to make the 4-inch monocrystalline furnace technology a cabbage price.

However, the 6-inch monocrystalline furnace is still technically difficult. It will take at least a few years of hard work before it can be localized. However...... The hot screen technology has upgraded the 4-inch monocrystalline furnace to a 4.5-inch monocrystalline furnace. The technicians naturally felt very excited, because the technical threshold of the original 6-inch monocrystalline furnace may have been easily pierced because of the hot screen technology!

The energy production of 6-inch wafers will not only benefit civilian electronic products, but also aerospace, military industry, scientific research, etc., because of higher quality wafer materials!