Frequently asked questions and answers
【Q.1】What is the definition of aspect ratio?
The vertical direction is perpendicular to the orientation flat. And the aspect ratio is width ÷ length.
【Q.2】How do I determine the optimal aspect ratio?
First of all, we will propose candidate chip length and width dimensions that can be realized by semiconductor layout design.
Performs a cloud calculation of aspect ratio optimization for each candidate plan.
If the number of effective chips increases by adjusting the chip aspect ratio, make it the optimal plan.
Compare the best alternatives for each candidate and select the best one.
【Q.3】What should I do for the notch type wafer?
Set the orientation flat length to 0.
【Q.4】What is the patent for the technology used?
Two inventions have been filed for the placement optimization.
One case (JP2003257843) has already been withdrawn.
Another (patent 4298571 /US-6854105) was abandoned in 2009 due to unpaid pensions.
On the other hand, there is one invention used for aspect ratio optimization, but the PCT patent is currently published (WO2018216091).
This patent applicant is a representative of our company.
【Q.5】Does the technology for maximizing the number of effective chips still have room to evolve?
At least in terms of speeding up operations, there are still many things to improve.
Also, there are many problems in terms of usability.
We will continue to make improvements as needed while listening to your comments.
【Q.6】Could you give me the software instead of the cloud computing service?
At the moment, we do not give away the software.
【Q.7】Entering design information into an external cloud would violate internal rules.
Since it is just the chip size before the decision, it does not seem to correspond to the design information.
However, it is not good to judge on your own.
You should consult your boss first.
Although it depends on the number of effective chips, if it is about 100, it is a loss if you never use it.
If you are a boss who is interested in the interests of the company, it will surely support you.
（Update Oct 29, 2023）
