每日一奖----20140612

damonzhao

Q22. What is metal density, metal slotting rule?

419313401

metal density是布线后的金属密度

jtianen

Metal density rule is a requirement for the design to ensure the fab processing successfully, preventing some fab problem such as over-etching.
(not sure):
Metal slotting rule is to instruct the metal filling rules.

haimo

Metal slotting rule:
就是金属过宽的时候，由于趋肤效应，电流在金属上流动是会分布不均，造成电流密度过大，金属短路等问题，所以要在上面打slot，迫使电流均匀流动。