Chinese semiconductor thread II

interestedseal

Junior Member
Registered Member
唐教授领导团队研发自主知识产权的EUV光源,采用高功率射频激励CO₂激光器产生极紫外光。技术难度高,需要精确控制激光器输出和锡滴喷射。团队成员不畏困难,经过多年努力,取得重大技术突破,为我国半导体产业自主发展提供支持
Please, Log in or Register to view URLs content!

HUST RF slab CO2 laser for EUV MOPA preamp and laser spike annealing. Already supplying to HW, SMEE and SMIC. I get the feeling that we might see euv-produced chips H2 2025 or H1 2026
 

european_guy

Junior Member
Registered Member
Dismantling of China's first batch of domestic DDR5 memory: Changxin particle single die is 68.06 square millimeters, 40% larger than Samsung

Please, Log in or Register to view URLs content!

Here comes the usual wafer capacity computation.

Starting from:

1735727621057.png



We have:

1735727707501.png

With reported 80% current yield we have: 712 dies per wafer. Each single die of 2GB.

Let's assume a generous memory of 32GB per server. It's DDR 5 memory for 44.5 servers per wafer.

With reported 50K wpm for the most advanced of the 2 fabs (the other makes DDR4), we have a full memory production capacity of 2.2M servers / month.

So currently, if CXMT dedicates fab 2 to DDR 5, it can supply more than 2M servers / month.

By end 2025 it should go (according to known plans) to 100K wpm at 90% yield -> 5M servers / month.
 

olalavn

Senior Member
Registered Member
MTT X300 supports the acceleration of GIS, CAD, BIM applications and non-linear editing, comprehensively improves the performance of industrial software, and edits high-quality videos in real time. In terms of hardware parameters, MTT X300 is based on the second-generation MUSA architecture GPU core, built-in 4096 MUSA stream processing units, single-precision floating-point computing power reaches 14.4TFLOPS, equipped with 16GB GDDR6 video memory, bus interface PCIe 5.0 x 16, TGP power consumption 255W. It has 3 DP 1.4a and 1 HDMI 2.1 interfaces, supports H.265/H.264 and other video codecs, supports 4 displays output at the same time, up to 8K display

Please, Log in or Register to view URLs content!
 

sunnymaxi

Major
Registered Member
How many kilowatts?
EUV from ASML CO2 laser occupied several room sized.
Is the HUST one as big physically? Do they have a picture?
This is from HUST ..
***********************************************************

There is one more from Harbin Institute of Technology(HIT) they have delivered 13.5nm EUV light source months ago.. also won the provincial award. posted on previous page of this thread.. i m quoting it for you

View attachment 142274

I'm not really sure why he didn't just post the entire thing. The 13.5nm EUV light source is clearly provided by HIT to EUV machine. The fact that it won't an order tells me they verified it to a degree on the prototype. So now, it's just about time to get it the machine commercialized. And this is a year end reporting, so it would have likely happened months ago to win the award.

China has basically 2-3 working EUV light source for commercial purpose and HUST is one of them..

@SanWenYu 13.5nm is basically a required one for EUV, delivered by HIT.. this is equivalent to ASML's EUV.
 

interestedseal

Junior Member
Registered Member
No picture/photo in that weixin post but there is an embedded video in which Prof. Tang said his CO2 laser has the output power of 3500W. How does this compare to ASML's?
Prof Tang’s team is responsible for RF slab CO2 laser, which is used in the preamp step of CO2 MOPA system. Trumpf’s preamp power is 100 W, so preamp power is not a problem. That 3.5KW is probably for spike laser annealing applications
An initial amplifier is used to pre-amplify the light to a magnitude of 100 W.
Please, Log in or Register to view URLs content!


Another team at HUST is responsible for mopa main amp laser development. They achieved 10 KW level in 2023, so power is no big issue
成功研制2-5kW直流激励轴快流CO2激光器,万瓦级射频激励轴快流CO2激光器,用于极紫外驱动的万瓦级激光放大器
Please, Log in or Register to view URLs content!


Also don’t forget dose control and beam quality parameters are as important as power for lppeuv drive laser systems.
 

LanceD23

New Member
Registered Member
No picture/photo in that weixin post but there is an embedded video in which Prof. Tang said his CO2 laser has the output power of 3500W. How does this compare to ASML's?
That doesn't sound good.

Japan's Gigaphton CO2 laser for EUV output power is 20KW. That's 6 times of this.

I think this HUST laser is lab demo purpose , not really for commercial production purpose.

I think this University program needs to partner with state owned laser weapon companies in order to bump to that level of power. Several room sized equipment is beyond university program calibur.

Please, Log in or Register to view URLs content!
 
Last edited:

sunnymaxi

Major
Registered Member
That doesn't sound good.

Japan's Gigaphton CO2 laser for EUV output power is 20KW. That's 6 times of this.

I think this HUST laser is lab demo purpose , not really for commercial production purpose.

I think this University program needs to partner with state owned laser weapon companies in order to bump to that level of power. Several room sized equipment is beyond university program calibur.

Please, Log in or Register to view URLs content!
you completely ignore what @interestedseal posted. and for your kind information HUST has complete facility and HUST is located in Wuhan city. Wuhan city is also known as Laser/Optics capital of China..

HUST successfully achieved 10KW level in 2023, so power is no big issue.

Link -
Please, Log in or Register to view URLs content!
 
Top