Patent ID: 9620379
Date: 2017-04-11
CPC Classifications: B23K,H01L

Claim:
1. A method of dicing a substrate comprising a plurality of integrated circuits (ICs) on a front side of the substrate opposite a back side of the substrate, the method comprising: forming a multi-layered mask including a non-photodefinable laser light absorbing layer over the substrate covering and protecting the ICs on the front side of the substrate; patterning the multi-layered mask with a laser scribing process to provide a patterned multi-layered mask with gaps, exposing regions of the substrate between the ICs, the laser scribing process performed from the front side of the substrate; plasma etching the substrate through the gaps in the patterned multi-layered mask to singulate the ICs, the plasma etching performed from the front side of the substrate; and removing the mask with an aqueous solution.