Doesn't the letter say N+1 production already began?
I'm kinda confused here. What is N+1 versus 7nm? Is he referring to the N+2 node when he says "7 nm", or the N+1 node?
Also wanted to clarify, you do have some sort of background or connection to the mainland semiconductor industry right? I just want to verify the information you have said is credible.
I used to work in the Semiconductor Industry in China but have moved on to something else. I still have connections with certain people in the Industry who regularly update me on the latest developments.
I like posting updates on the latest developments in the Industry in China just to drive people like Marco Rubio and Ron Vara Crazy.
I believe the Tape out and then the subsequent trial production of the N+1 (8nm) Chip has been successfully carried out lately.
Thats why Liang said that Risk Mass Production will happen in April 2021.
Risk Mass Production means real Mass production for an actual customer. So SMIC has already lined up some clients to supply the N+1 Chips to.
N+2 is the actual 7nm Chip apparently.
I posted some information about Chiplet technology a few pages back. You can refer to it.
But basically it means that for eg: a 7nm Chip,
with this technology, only certain minor parts of the Chip needs to be fabricated at 7nm, the other components of the Chip can be done at 14nm.
This will reduce cost of production and benefit producers like SMIC who maybe currently lack the latest production technology.