Patent ID: 9627229
Date: 2017-04-18
CPC Classifications: H01L

Claim:
1. A method of making a semiconductor device, comprising: providing a substrate including an opening devoid of material and extending from a first surface of the substrate to a second surface of the substrate; forming a first insulating layer over the first surface of the substrate; removing a portion of the first insulating layer to form a trench over the first surface of the substrate and around the opening; forming an interconnect structure in the trench; disposing an underfill material in the trench around the opening and interconnect structure; and disposing a first semiconductor die over the substrate and interconnect structure after depositing the underfill material in the trench, wherein a sensor of the first semiconductor die is disposed over the opening in the substrate and the trench contains the underfill material to prevent the underfill material from reaching the opening.