I check old YMH case.
The BSC curing temp and wafer thickness may have influence also.
AKS case is 360um thickness and should be better.
And we have some plan to 130C BSC curing. We would consider it also.
But I am still nerverous for the 20um space.
Would you try to increase them to 30um if " 球旁邊是粗線"
粗線定義或許可以先參考YMH YAB009最下面那個紅圈上面那條線寬