Patent ID: 9126285
Filing Date: 2015-09-08
Classification: B23K,H01L

Abstract:
1. A method of dicing a semiconductor wafer comprising a front surface having a plurality of integrated circuits thereon and having a back surface opposite the front surface, the method comprising: forming an outermost mask on the front surface of the semiconductor wafer, the outermost mask covering and protecting the integrated circuits; patterning the outermost mask and a portion of the semiconductor wafer with a laser scribing process to provide a patterned outermost mask and to form trenches partially into but not through the semiconductor wafer between the integrated circuits, each of the trenches having a width; plasma etching, with the patterned outermost mask exposed, the semiconductor wafer through the trenches to form corresponding trench extensions and to form singulated integrated circuits, each of the corresponding trench extensions having the width; and separating the patterned outermost mask from the singulated integrated circuits.