Chinese semiconductor industry


horse

Senior Member
Registered Member
Are they going to build more of these similar facilities, distributed over different regions of the country, to diversify the risks of natural disasters and potential wars?

Who knows. Officially, no.

Then again, Huawei kept on denying Harmony OS existed for cell phones, until they finally started promoting it, that is was for cell phones all along.

:D
 

gelgoog

Major
Registered Member
Pencil is not safe to be used in weightless condition. The pencil flake is harmful to the astronaut and the equipment onboard and they are flammable.

This is a bit overblown. And modern ball point pens work just fine in space. That is what Russian astronauts use most of time today. You don't need a "space pen". Ball points work by capillary action not gravity. What would not work would be a traditional fountain pen.
 

bettydice

New Member
Registered Member
Who knows. Officially, no.

Then again, Huawei kept on denying Harmony OS existed for cell phones, until they finally started promoting it, that is was for cell phones all along.

:D
Only insiders would know accurately and I'm not one, but that's not what I have observed. HarmonyOS didn't exist for cell phones, wasn't for cell phones all along. The name HarmonyOS wasn't certain and Huawei applied for many different names for the OS before, and Huawei released HarmonyOS for smartphones only after 2 years of the sanction, still not yet for global models, meaning the project was only in its infancy if there was at all and Huawei wasn't sure what to do for a long time after the sanction, and Huawei didn't really want to go for its own solution and leave Android. HarmonyOS for smartphones was not Huawei's initial plan. Huawei changed their mind only after a long time since the sanction and judged that there is no chance sanction will be lifted. Huawei admitted the existence of and talked about HarmonyOS phones long before the official launch. I don't think Huawei would have developed and released HarmonyOS for phones without the sanction.
 

tokenanalyst

Junior Member
Registered Member

China reports robust semiconductor industry growth despite US sanctions​


Although some of its key semiconductor industry players were put on the Entity List by the US government since 2019, China managed to register double-digit growth in the revenues of all of its semiconductor sub-sectors in 2020, pushing up global market shares to challenge Taiwan and the US, according to several recent reports.

If the robust growth continues, China's semiconductor industry will grow rapidly in the next decade and by 2030 will become a world champion in semiconductor manufacturing, seizing a 24% global market share, as previously predicted by the Semiconductor Industry Association (SIA).

According to an SIA blog, the semiconductor industry in China grew 30.6% in 2020 to reach $39.8 billion in total sales, representing robust annual growth of 36%, 23%, 32%, and 23% for the fabless, IDM, foundry, and OSAT sectors, respectively.

China registered 9% of the global semiconductor market share in 2020, surpassing that of Taiwan for the second year in a row. It is likely to overtake Japan and Europe soon, as the global market shares of the semiconductor industry in the two major economies both stood at 10%.

China's fabless semiconductor sub-segment ranked third after the US and Taiwan, taking 16% of the global market share, up from 10% in 2015, even though it was subject to tightened chip export control restrictions.

In terms of wafer capacity increase, China accounted for 26% of the worldwide total, according to IC Insights and SIA, while its top 3 outsourced semiconductor assembly and testing (OSAT) companies collectively garnered more than 35% of the global market share.

China has already announced US$26 billion in new planned funding for 28 additional fab construction projects in 2021, mostly focusing on mature processing nodes.

Private sector investors, supported by government subsidies and favorable tax incentives, have poured money into China's semiconductor industry. Some consumer electronics and home appliance OEMs, such as Xiaomi and Alibaba, are designing chips in-house and having them manufactured by local foundry makers such as SMIC or Hua Hong, an effort aligned to Beijing's call to seek IC sovereignty and self-sufficiency.

SIA said nearly 15,000 semiconductor startups were established in 2020 alone, in which many are IC design companies specializing in GPU, EDA, FPGA, AI computing and other high-end chip design. China now has more than 350,000 businesses operating in its semiconductor sector, 80% of which were registered within the last 5 years, and 30% registered within the past 12 months, according to Global Times, quoting data from Chinese online business information provider Tianyancha.

In addition to copious funding provided by China's central government, provincial governments, and municipal governments, startups in China also got financial backing from local companies such as Huawei, which has also aggressively invested in 56 Chinese semiconductor supply chain companies via a "Hubble Technology Investment Fund" to foster its own semicon ecosystem, according to the Wall Street Journal.

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Weaasel

Junior Member
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Asking for a friend. In a synchrotron, the charged particles being accelerated to emit EM radiation are normally and initially widely dispersed and scattered, right? Therefore those that are accelerated to the extent of emitting EUV and x-ray photons will not do so coherently to produce a single or multiple concentrated beams... I suppose that steady state microbunching is a methodology of accelerating a very close concentration and collection of charged particles to emit highly concentrated beams of radiation that one aims for... How exactly is that done? Anyway, how exactly, basically speaking does SSMB work?
 

FairAndUnbiased

Senior Member
Registered Member
Asking for a friend. In a synchrotron, the charged particles being accelerated to emit EM radiation are normally and initially widely dispersed and scattered, right? Therefore those that are accelerated to the extent of emitting EUV and x-ray photons will not do so coherently to produce a single or multiple concentrated beams... I suppose that steady state microbunching is a methodology of accelerating a very close concentration and collection of charged particles to emit highly concentrated beams of radiation that one aims for... How exactly is that done? Anyway, how exactly, basically speaking does SSMB work?
No, it is the opposite. Synchrotron radiation is not an isotropic source, it is actually one of the most highly focused, highly collimated sources of light possible.

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LPP is an essentially isotropic source.

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Large, natural synchrotron sources like black hole jets can be seen from literally across the universe where isotropic sources (like stars and galaxies) are too faint to even be resolved individually from the same galaxy cluster.
 

Phead128

Senior Member
  • Is it hard to produce light on the EUV spectrum using a synchrotron?
  • Is the light on the EUV spectrum produced using a synchrotron powerful enough to cut patterns into a chip?
  • Is the difficulty building the synchrotron, or is the difficulty to modify synchrotron to produce EUV light?
    • I see Shanghai ZhangJiang has a synchrotron facility already, would it be hard to modify an existing facility to produce light on EUV spectrum for lithography purposes?
 

tokenanalyst

Junior Member
Registered Member
Asking for a friend. In a synchrotron, the charged particles being accelerated to emit EM radiation are normally and initially widely dispersed and scattered, right? Therefore those that are accelerated to the extent of emitting EUV and x-ray photons will not do so coherently to produce a single or multiple concentrated beams... I suppose that steady state microbunching is a methodology of accelerating a very close concentration and collection of charged particles to emit highly concentrated beams of radiation that one aims for... How exactly is that done? Anyway, how exactly, basically speaking does SSMB work?
1642197002616.png

With microbunching the ultra bright accelerated light produced become more pulse laser like which is perfect for EUV patterning.

This article from physorg explain it perfectly.

The most modern light sources for research are based on
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. These are large facilities in which electrons are accelerated to almost the speed of light, and then emit light pulses of a special character. In storage-ring-based synchrotron radiation sources, the
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travel in the ring for billions of revolutions, then generate a rapid succession of very bright light pulses in the deflecting magnets. In contrast, the electron bunches in free-electron lasers (FELs) are accelerated linearly and then emit a single super-bright flash of laser-like light. Storage ring sources as well as FEL sources have facilitated advances in many fields in recent years, from deep insights into biological and medical questions to materials research, technology development, and quantum physics.

Now, a Sino-German team has shown that a pattern of pulses can be generated in a synchrotron radiation source that combines the advantages of both systems. The synchrotron source delivers short, intense microbunches of electrons that produce radiation pulses having a laser-like character (as with FELs), but which can also follow each other closely in sequence (as with synchrotron light sources).
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FairAndUnbiased

Senior Member
Registered Member
  • Is it hard to produce light on the EUV spectrum using a synchrotron?
  • Is the light on the EUV spectrum produced using a synchrotron powerful enough to cut patterns into a chip?
  • Is the difficulty building the synchrotron, or is the difficulty to modify synchrotron to produce EUV light?
    • I see Shanghai ZhangJiang has a synchrotron facility already, would it be hard to modify an existing facility to produce light on EUV spectrum for lithography purposes?
1. It is trivial to tune synchrotron radiation to arbitrary wavelengths. It is why it is one of the only high intensity sources of soft x-rays, terahertz and other wavelengths with almost no other sources.

synchrotron2.jpg


2. Yes, synchrotron radiation is literally one of the most brilliant sources of light in the universe. In addition is it's collimated light, like a laser, while LPP produced EUV is ironically mostly isotropic like a 19th century light bulb. There's not much directionality because all it is, is basically superheating the Sn plasma to extremely high ionization states. It's essentially a thermal emission process.

3. The difficulty is the synchrotron is large, fixed and takes up an entire building with numerous recurring costs like liquid He coolant for the steering magnets, vacuum pumps, etc. Another difficulty is transmitting the light from inside the synchrotron to the outside when EUV is absorbed and/or scattered by everything. However these are engineering problems that can be solved by i.e. differential pumping, new materials, etc.

Otherwise the problem is that simply has no motivation to look into this because it bought Cyber, was first, and got it's competitors banned. But nobody says first one is the correct one. Why would the first one be necessarily the best one?
 

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