Chinese semiconductor industry
- Thread starter Hendrik_2000
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We used to have the SMIC JC employee share some progress on Zhihu，too bad his account got blacklisted and his old post all deleted even his user name have to be changed. That might be an indication that his infor is genuine and sensitive，because there are tons of rumors related to SMIC on Zhihu that never get banned.
Are you referring to the use of binary masks?
I think is more about increasing the resolution of the patterning without the need highly complex light sources like EUV.
No, I refer to the change of photoresist reaction with the dose of light absorbed.
Photoresist does not change its structure linearly with the light dose it receives, but until a given threshold it does nothing and then, if the light dose is just a bit more, suddenly changes it's chemical structure. So that while the projected image is smooth and changes gradually due to diffraction limits, the impressed line on the photoresist, and after developing and etching on the wafer, is way much sharper.
All this is well explained in this video:
BTW all this YouTube series by Zeiss (the historical optical subsystem supplier of ASML) on lithography is very instructive to get a good idea of how lithography works.
there is more to this
part of the first Xuantie RISC-V developer ecosystem conference
a lot of golden nuggets in there. China represents half of the 10 billion RISC-V chips sold worldwide. Expecting 80 billion RISC-V chips by 2025.
Canaan Creative announced mass production of K230 AIoT SoC at this conference.
It's the first to use Vector 1.0 architecture & Xuantie C908 dual core CPU & a built-in K.
Capable of supporting vision, voice, translation.
Can be used in smart home products and drones.
It's the first to use Vector 1.0 architecture & Xuantie C908 dual core CPU & a built-in K.
Capable of supporting vision, voice, translation.
Can be used in smart home products and drones.
There is 64 core RISC-V CPU getting unveiled
This SG2042 CPU by Sophgo is already in mass production and have started delivery in March
It makes use of T-Head's high performing Xuantie cores and operate at 2.0 GHz.
It uses Vector 0.71 and works with various linux OS
There are motherboards designed now to use multiple SG2042 CPUs with the goal of entering HPC market.
This SG2042 CPU by Sophgo is already in mass production and have started delivery in March
It makes use of T-Head's high performing Xuantie cores and operate at 2.0 GHz.
It uses Vector 0.71 and works with various linux OS
There are motherboards designed now to use multiple SG2042 CPUs with the goal of entering HPC market.
Ahh the dosage, I was thinking of monochromatic contrast. I far I understand looks like the main goal of this "super-resolution" technique is to defeat the diffraction that limits the resolution therefore getting smaller features. They acknowledge that using it in current photoresists is still a problem but they say that can be solved with new formulations. Lets see how this lithography technique develop in the future.
Not always sometimes looks like crap but that can be improved using computational lithography to an acceptable level.
Sophgo is a subsidiary of Bitmain. Have alot of resource ...ahem...money
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