By: Groo (charlie.delete@this.semiaccurate.com), June 26, 2022 9:39 am
Room: Moderated Discussions
rwessel (rwessel.delete@this.yahoo.com) on June 25, 2022 11:43 am wrote:
> anon (myname.delete@this.gmail.com) on June 25, 2022 11:34 am wrote:
> > Would a hexagonal die make better use of the round ingot?mail
>
> You're going to have a heck of a time sawing these dies appart:
>
Not really, I got a hexagonal die wafer in my office and have seen some very non-regular dies out there.
https://www.semiaccurate.com/2015/05/18/disco-makes-hexagonal-non-regular-chips-possible/
It is a tad more expensive but not a significant cost in relation to a finished wafer on a modern process. The biggest reason you don't want to do it is the loss of edge area for I/O.
-Charlie
> anon (myname.delete@this.gmail.com) on June 25, 2022 11:34 am wrote:
> > Would a hexagonal die make better use of the round ingot?mail
>
> You're going to have a heck of a time sawing these dies appart:
>
Not really, I got a hexagonal die wafer in my office and have seen some very non-regular dies out there.
https://www.semiaccurate.com/2015/05/18/disco-makes-hexagonal-non-regular-chips-possible/
It is a tad more expensive but not a significant cost in relation to a finished wafer on a modern process. The biggest reason you don't want to do it is the loss of edge area for I/O.
-Charlie