Patent ID: 9099547
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, the method comprising: providing a semiconductor wafer having a top surface and an opposite bottom surface, the top surface comprising a plurality of dicing channels, wherein the semiconductor wafer comprises a plurality of dies adjacent the top surface, wherein each die of the plurality of dies is separated by a dicing channel of the plurality of dicing channels from another die of the plurality of dies; forming trenches in the semiconductor wafer from the top surface, the trenches oriented along the plurality of dicing channels, wherein forming the trenches comprises forming coarse sidewalls using a coarse mechanical dicing process and smoothing the coarse sidewalls with an etching process performed from the top surface; after forming trenches, without filling the trenches, testing the plurality of dies in the semiconductor wafer to identify first dies of the plurality of dies, the first dies being identified to be separated from remaining dies of the plurality of dies; and after testing the plurality of dies, without filling the trenches, grinding the semiconductor wafer from the bottom surface to separate the semiconductor wafer into the plurality of dies.