Patent ID: 7767557
Filing Date: 2010-08-03
Classification: H01L,Y10S

Abstract:
1. A method, comprising: forming a layer of frozen material above a plurality of integrated circuit dies on a substrate on a cooled chuck; performing a cutting process with the substrate on the cooled chuck, without applying any additional fluid, to cut through the layer of frozen material and the substrate to singulate the plurality of dies; using only the cutting process, melting some of the frozen material to lubricate a cutting surface of a blade and producing particles from cutting the substrate, sufficient frozen material remaining to protect the substrate from the particles; and after the plurality of dies are singulated, applying a liquid to the singulated dies to melt residual frozen material, the substrate being oriented such that the frozen material is facing downward and the liquid is directed upward and the particles from the cutting process falling away from the singulated dies while applying the liquid.