Patent ID: 9691725
Date: 2017-06-27
CPC Classifications: H01L

Claim:
1. A device comprising: a first semiconductor substrate having a first side and an opposing second side; a first electrical device embedded in the first semiconductor substrate adjacent the first side of the semiconductor substrate; a first bonding pad disposed over the first side of the first semiconductor substrate, wherein the first bonding pad is electrically coupled to the first electrical device; a second semiconductor substrate having a third side and an opposing fourth side; a second bonding pad disposed over the third side of the second semiconductor substrate, wherein the first and second semiconductor substrates are bonded together via the first bonding pad and the second bonding pad such that the first side of the first semiconductor substrate faces the third side of the second semiconductor substrate; a through-substrate-via (“TSV”) extending from the second side of the first semiconductor substrate to the first bonding pad, wherein the TSV includes a trench extending from the second side of the first semiconductor substrate to the first bonding pad and a metal material layer disposed within the trench; an insulating layer disposed over the second side of the first semiconductor substrate; and a first passivation layer disposed over the insulating layer over the second side of the first semiconductor substrate, and wherein the metal material layer disposed within the trench includes opposing sidewall portions and the first passivation layer extends within the trench between the opposing sidewall portions of the metal material layer.