Newport Fab, LLC

Hadi Jebory

David J Howard

Edward J Preisler

Marco Racanelli

Paul D Hurwitz

Scott B Stetson

A semiconductor wafer having a plurality of through substrate vias (TSVs) is disclosed. The semiconductor wafer includes a stepped support ring on an outer edge of the semiconductor wafer, a usable back side region of the semiconductor wafer substantially enclosed by the stepped support ring, and the plurality of TSVs extending from a front side of the semiconductor wafer to the usable back side region of the semiconductor wafer. The stepped support ring includes a step between an outer ring and an inner ring of the stepped support ring. The semiconductor wafer further includes a back side metal on the usable back side region of the semiconductor wafer, a plurality of semiconductor devices on the front side of the semiconductor wafer, where at least one of the plurality of semiconductor devices is coupled to the back side metal through at least one of the plurality of TSVs.

Method of fabricating a semiconductor wafer including a through substrate via (TSV) and a stepped support ring on a back side of the wafer

Disclosed are a structure for improving electrical signal isolation in a semiconductor substrate and an associated method for the structure's fabrication. The structure includes a deep trench having sidewalls disposed in the semiconductor substrate. An isolation region may be formed along at least an upper portion of the sidewalls of the deep trench, and a metallic filler may be disposed in the deep trench. The isolation region may include a PN junction formed by one or more of ion implantation and annealing, deposition of highly doped polysilicon and out diffusion, and gas phase doping and annealing. In the alternative, the isolation region may be a dielectric isolation region formed by one or more of uniform dielectric deposition, partial dieletric deposition, and dielectric deposition by ionic reaction.

Isolated through silicon via and isolated deep silicon via having total or partial isolation

Disclosed are a structure for providing electrical isolation in a semiconductor substrate and an associated method for the structure's fabrication. The structure includes a deep trench isolation loop having a first depth disposed in the semiconductor substrate. A dielectric material is disposed in the deep trench isolation loop and one or more through silicon vias (TSVs), having a second depth, are disposed in the semiconductor substrate and within a perimeter of the deep trench isolation loop. A portion of the semiconductor substrate surrounding the deep trench isolation loop may be doped. A metallic filler may be disposed within the one or more TSVs and the metallic filler may be in direct electrical contact with the semiconductor substrate.

Isolated through silicon vias in RF technologies

Disclosed is a structure having anchor vias for improved backside metal adhesion and an associated method for the structure's fabrication. The structure includes at least one anchor via disposed in at least one corner of a semiconductor substrate. A metal filler may be formed within the at least one anchor via, the metal filler having a protruding portion extending from a backside of the semiconductor substrate. The structure may further include a backside metal layer on a bottom surface of the semiconductor substrate, the backside metal layer being bonded to the protruding portion of the metal filler in the at least one anchor via. The at least one anchor via may include a cluster of anchor vias, a plurality of anchor vias disposed in a straight line and/or in a staggered configuration along a periphery of the semiconductor substrate.

Anchor vias for improved backside metal adhesion to semiconductor substrate

Various implementations of through silicon vias with pinched off regions are disclosed. A semiconductor substrate includes a plurality of the through silicon vias disposed in the substrate and extending from a top surface of the substrate to a bottom surface of the substrate. A conductive filler is disposed within each of the plurality of through silicon vias, each of the plurality of through silicon vias having a hollow center which reduces thermal stress in the semiconductor substrate. The plurality of through silicon vias also have pinched off regions at the bottom and/or the top portions of the through silicon vias, which prevent contamination during processing of the semiconductor substrate.

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Irvine, CA, United States of America

Hadi Jebory