We recognize that in the past, there are P/Ns we accepted something beyond our design rule.
As a result, actual frames are close to spec limit or out of spec, sometimes.
Recently, we received your IP request for fiducial mark dimension for several P/Ns.
Some of them, we accepted something beyond our design rule as mentioned above.
In such cases, it is difficult to make improvement because adjustment margin is already small.
In order to avoid this kind of issue, we would like you to agree to apply our design rule.
In this case, it is half etch to half etch space 0.15mm.
FYI, we are requesting yoru team to accept our design rule for new FAI sample A0008DN013F01 (2016).