bonanza

Chapter 584 A Secret Without a Secret

"Those two are feet, what are these two?" Zhou Ying pointed to the raised two rear feet of the cow cat.

"That's its hand!" Yang Yue raised his little hand.

"Whose hands grow behind the buttocks?" Zhou Ying was angry.

……

Yang Dongsheng walked into the room, today was the weekend, Yang Miao and Yang Lin were both at home, Yang Dongsheng turned on the TV, and a basketball game just started.

This game is a battle of focus - the Mavericks challenge the Lakers away.

In the official strength rankings announced before the start of the season, the Mavericks ranked second. After the start of the regular season, the Mavericks played really well. They just won another wave of seven consecutive victories and are currently ranked first.

Instead of starting Redd, Nelson Sr. started Fred Hoiberg, who was traded from the Bulls, at shooting guard.

At the beginning of the game, the Mavericks played very difficult. This season is O'Neal's peak period, and even Duncan can't stop him.

As for the muscular man specially recruited to fight against O'Neill, he looked very strong indeed, but he had no offensive means at all, and he became the target of being emptied as soon as he came on the court.

Coupled with the fact that coach Nelson did not come up with tactics to restrain the Lakers, the Mavericks eventually lost to the Lakers.

Fortunately, the score difference is not big——103:105, the suspense of the outcome lasted until the last moment, Nowitzki and Fred Hoiberg were the last one to hit a three-pointer, almost leading the Mavericks to reverse Contest.

In fact, the best way to resist the NBA is to develop the CBA. Unfortunately, the men's football team is not up to par, and the men's basketball team is no better than the men's football team!

Kobe's soliloquy makes many people hate, but at least he won't laugh when he loses.

Although basketball is a highly technically demanding project, as competitive sports players, many of our basketball players don't even have muscle lines.

The same race, even the female table tennis players have abdominal muscles, and look at some athletes, who were called vain chickens a few years ago, and they are still vain chickens a few years later.

Our table tennis is the best in the world, but it is not surprising that some sports are as bad as shit.

Half a month later is the establishment ceremony of Dongsheng Semiconductor. This subsidiary will form a complete industrial chain integrating upstream equipment and materials, IC design, foundry, packaging and testing.

At that time, the main leaders listed in Shanghai, as well as the leaders of relevant ministries and research institutes will come to attend the ceremony.

After the ceremony, Dongsheng Semiconductor, as the landlord, had to arrange for the participants to visit some projects, which projects could be shown to others, and which ones should be kept secret. Yang Dongsheng needed to make up his mind.

"Dual-core chips for servers and mobile phone chips are our main achievements over the years. These two must be available!" Yang Dongsheng ticked two boxes on the paper, "Don't give them immersion lithography technology and ion etching machines. Look!"

These are the two technologies that the company is progressing the fastest at present and are most likely to be put into use in the next few years. Once put into use, they can bring leapfrog development to the company's semiconductor industry. Because of this, they must be kept strictly confidential.

"Is it a little less?" Opposite Yang Dongsheng was a man in his 40s wearing gold-rimmed glasses.

This person is the manager of Dongsheng Semiconductor and the new vice president of the company.

Yang Dongsheng thought for a while and said, "Show them the research progress of the lithography machine!"

The four core equipments of the semiconductor industry - lithography machine, ion implanter, etching machine, thin film deposition machine, among which lithography machine is the most often mentioned, the reason is very simple, because lithography machine is the most difficult .

Yang Dongsheng didn't know how difficult it was until he formally set foot in the field of lithography machines.

If they are chasing the ass of foreigners, they will never try to catch up with others, and they will never want to make a profit. No matter what level of equipment they make, Western countries will immediately lift the embargo on the same equipment. Don't even think about getting it in the market.

Thanks to Yang Dongsheng's foresight, Dongsheng Semiconductor decided to directly launch extreme ultraviolet lithography-related technologies.

Yang Dongsheng dared to do this because the lithography machine does not have to make the first-generation equipment before it can make the second-generation equipment.

The three core components of the lithography machine - light source, lens, and workbench.

The key technology light source, deep ultraviolet light uses excimer laser, which has little connection with the next generation extreme ultraviolet light source!
Moreover, excimer laser technology is widely used. This technology is not only mastered by the United States. It is relatively simple to bypass the United States. In comparison, extreme ultraviolet light source technology is more enchanting.

The extreme ultraviolet lithography machine of the later ASML uses a light source that is produced by continuously bombarding tin droplets with laser light.

Since the luminous efficiency of tin droplets is very low, and the extreme ultraviolet rays only account for a few percent of all light, it is necessary to use a sufficiently strong laser to bombard the tin droplets to emit enough light—at least 3 watts or more, and it must be The constant bombardment.

The problem of high-power lasers, accurate hitting of tin drops...everything is a terrible technology.

In terms of lenses, extreme ultraviolet rays are also very different from deep ultraviolet rays. Extreme ultraviolet rays are very easily absorbed. The lenticular lenses used in the deep ultraviolet stage can no longer be used, because the lens material will directly absorb the extreme ultraviolet rays, and reflective lenses must be used lens.

Since the wavelength of extreme ultraviolet light is only a dozen nanometers, the nanometer precision of the lens is no longer enough.

Reflective lenses for extreme ultraviolet rays must have picometer-level precision.

Plasma polishing equipment must be used, which is not available in China, and cannot be bought abroad, so we have to make it ourselves.

There is also a coating on the lens to absorb light other than extreme ultraviolet light through the coating.

A coating machine of this specification could not be bought, so Yang Dongsheng had to build it himself.

That’s not all, because the extreme ultraviolet rays are very easily absorbed, and even air can absorb extreme ultraviolet rays, so the entire working environment must maintain a high vacuum.

The interior of the lithography machine must be pumped once with an ordinary vacuum pump, and then pumped again with a molecular vacuum pump. This is not enough, and it must be pumped again with an adsorption method.

The reason why Yang Dongsheng dared to show them the technology that is still under development is the overall structure of the lithography machine. In fact, there is no secret at all, and the test is the real industrial strength.

This is actually the most annoying place!
China has imported thousands of aero engines, but it has almost no effect on the improvement of its own aero engine technology, which is the same reason.

Many people ridicule Chinese technology because China can't make an EUV lithography machine. China can't make it, but the Americans can't make an EUV lithography machine alone.

The extreme ultraviolet lithography machine of ASML in the Netherlands uses American light sources, German lenses, Swedish bearings, and French valves... It can be said that it integrates the advanced technologies of all developed countries in the West.

It seems that there are no secrets, but in fact there are secrets everywhere!
(End of this chapter)