Patent ID: 9048309
Filing Date: 2015-06-02
Classification: H01L

Abstract:
1. A method of dicing a semiconductor wafer comprising a plurality of integrated circuits having bumps or pillars, the method comprising: uniformly spinning on a mask above the semiconductor wafer, the mask comprising a layer covering and protecting the integrated circuits having the bumps or pillars, wherein uniformly spinning on the mask above the semiconductor wafer comprises dispensing a water-soluble and non-photo-sensitive material, and wherein the water-soluble and non-photo-sensitive material comprises a material selected from the group consisting of a polyvinyl alcohol (PVA) based material having a viscosity approximately in the range of the 100s to 1000s of centipoises; patterning the mask with a laser scribing process to provide a patterned mask with gaps, exposing regions of the semiconductor wafer between the integrated circuits; and etching the semiconductor wafer through the gaps in the patterned mask to singulate the integrated circuits.