Chinese semiconductor industry

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tokenanalyst

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Not related to China but looks like this Russian company has been marketing this impressive High power, high repetition rate excimer laser for lithography, especially for maskless lithography. A direct excimer laser writing system would be much slower than a projection system but a bit more faster than a E-Beam system. Maybe It could fill the gap for chips for the Russian Mil. Also could be interesting if they collaborate with China in this area.

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It reminds me of this Chinese company that marketed the first KrF maskless system I've ever seen.

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FairAndUnbiased

FairAndUnbiased

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tokenanalyst said:
Not related to China but looks like this Russian company has been marketing this impressive High power, high repetition rate excimer laser for lithography, especially for maskless lithography. A direct excimer laser writing system would be much slower than a projection system but a bit more faster than a E-Beam system. Maybe It could fill the gap for chips for the Russian Mil. Also could be interesting if they collaborate with China in this area.

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It reminds me of this Chinese company that marketed the first KrF maskless system I've ever seen.

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View attachment 93494
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This means Russia can order lithography tools integrated with their own lasers or even sell the laser to Chinese integrators. It is a very impressive ArF source, compare with Cymer dry ArF sources.

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tokenanalyst

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FairAndUnbiased said:
This means Russia can order lithography tools integrated with their own lasers or even sell the laser to Chinese integrators. It is a very impressive ArF source, compare with Cymer dry ArF sources.

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Indeed, unless we are missing something is a pretty impressive system in a very compact format.
The Russians have been very straight forward about the idea of developing maskless systems to cut time of between development and deployment, but I still don't know if they have develop precise wafer stages like ones like ASML, Japanese companies or U-Precision have or if they still have develop accurate overlay metrology systems for the kind of machines they want to develop and the kind of chips they want to fabricate.​
 
FairAndUnbiased

FairAndUnbiased

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tokenanalyst said:
Indeed, unless we are missing something is a pretty impressive system in a very compact format.
The Russians have been very straight forward about the idea of developing maskless systems to cut time of between development and deployment, but I still don't know if they have develop precise wafer stages like ones like ASML, Japanese companies or U-Precision have or if they still have develop accurate overlay metrology systems for the kind of machines they want to develop and the kind of chips they want to fabricate.​
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That's where China comes in. They can always just sell the laser to Chinese companies, order parts like wafer stages for integration or outsource the integration to another company.
 
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dingyibvs

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FairAndUnbiased said:
IMO it's because EE is just outright harder than computer science. In fact I'd say it's the 2nd hardest major overall (below only a math degree).

People say physics is math heavy. True but it is intuitive math, just some calculus, and it is easy to draw a picture in your head for classical mechanics, thermodynamics, even quantum mechanics (i.e. graphing simple wavefunctions). The graphs are easy to understand, usually something as a function of time or distance. These are relatively easy graphs to read: it's either something changing with time, or a spatial distribution.

Even in physics, the universally most hated/feared class is classical electrodynamics which is just 1 class but is basically half the classes for an EE.

Eventually you develop a 'intuition' and don't need too much math to explain concepts and most of all, you just view real world phenomena as a "modified case" of something you already solved before.

Electrical engineering is much more abstract.
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Boy, I must've had a pretty different EE experience than you! Logic and Microprocessor classes were considered the hardest at my college, but I aced both. OTOH I barely passed quantum mechanics class and didn't do so hot in my solid state class either. I just couldn't visualize quantum physics, it was wholly abstract to me. Signal processing was also very abstract to me, I did well in the class but I had great trouble visualizing Fourier transforms. I ended up going into medicine so none of it really mattered, but just thinking about quantum mechanics and signal processing brings back bad memories!
 
FairAndUnbiased

FairAndUnbiased

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hvpc said:
Could you elaborate how you arrive at that conclusion?
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The ASML page seems a bit light on comparable specs, but let's take Gigaphoton, a supposed competitor to Cymer.
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Gigaphoton lasers have been integrated into at least a single lithography system, and I said that the Russian laser could be integrated onto a Chinese lithography system.

Wavelength193 nm
Average Output45 W
Pulse Energy11.25 mj
Repetition Rate4,000 Hz
Bandwidth (FWHM)0.2 pm
Bandwidth (E95)0.5 pm

Pulse repetition: same as Russian
Pulse energy: 1/2 Russian
Average output: 1/2 Russian

Bandwidth: Russian laser is 17-20 ns pulse duration,
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, we call λ = 193 nm, c = 3×10^17 nm/s, t = 20*10^-9 s, Δλ = 0.006 pm. So achieving a 0.2 pm bandwidth is nowhere near the physical limit and is plausible. They do not give this spec but it is possible to see that if they claimed a 0.2 pm bandwidth as well, it wouldn't be bullshit.

So what's the problem with my statement? I never said it was comparable to Cymer, I didn't have enough data, I just invited the viewer to compare some basic specs. I can say it is comparable to Gigaphoton though, and Gigaphoton is a competitor of Cymer, so yes, by definition of comparable, the Russian laser is comparable to Cymer.
 
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