Patent ID: 9728415
Date: 2017-08-08
CPC Classifications: H01L

Claim:
1. A method of making a semiconductor device, comprising: providing a semiconductor wafer containing a plurality of semiconductor dies formed in a base material extending across the semiconductor wafer and a plurality of conductive vias formed partially through an active surface of the base material with a distal end of the conductive vias embedded in the base material; depositing an encapsulant over the active surface of the base material and around a peripheral region of the semiconductor wafer; removing a first portion of the encapsulant and a first portion of the base material from a second surface of the base material opposite the active surface of the base material around the peripheral region to form a notch extending laterally through the encapsulant to remove all of the encapsulant around the perimeter of the semiconductor wafer within a height of the notch and further extending laterally into the base material, wherein the notch terminates prior to the conductive vias to leave the distal end of the conductive vias embedded in the base material; and removing a second portion of the base material after forming the notch to remove the notch and expose the distal end of the conductive vias.