Abstract:
Embodiments of the invention include an interconnect structure with a via and methods of forming such structures. In an embodiment, the interconnect structure comprises a first interlayer dielectric (ILD). A first interconnect line and a second interconnect line extend into the first ILD. According to an embodiment, a second ILD is positioned over the first interconnect line and the second interconnect line. A via may extend through the second ILD and electrically coupled to the first interconnect line. Additionally, embodiments of the invention include a portion of a bottom surface of the via being positioned over the second interconnect line. However, an isolation layer may be positioned between the bottom surface of the via and a top surface of the second interconnect line, according to an embodiment of the invention.
Abstract:
Techniques are disclosed for insulating or electrically isolating select vias within a given interconnect layer, so a conductive routing can skip over those select isolated vias to reach other vias or interconnects in that same layer. Such a via blocking layer may be selectively implemented in any number of locations within a given interconnect as needed. Techniques for forming the via blocking layer are also provided, including a first methodology that uses a sacrificial passivation layer to facilitate selective deposition of insulator material that form the via blocking layer, a second methodology that uses spin-coating of wet-recessible polymeric formulations to facilitate selective deposition of insulator material that form the via blocking layer, and a third methodology that uses spin-coating of nanoparticle formulations to facilitate selective deposition of insulator material that form the via blocking layer. Harmful etching processes typically associated with conformal deposition processes is avoided.
Abstract:
Techniques related to forming selective gate spacers for semiconductor devices and transistor structures and devices formed using such techniques are discussed. Such techniques include forming a blocking material on a semiconductor fin, disposing a gate having a different surface chemistry than the blocking material on a portion of the blocking material, forming a selective conformal layer on the gate but not on a portion of the blocking material, and removing exposed portions of the blocking material.
Abstract:
Bottom-up fill approaches for forming metal features of semiconductor structures, and the resulting structures, are described. In an example, a semiconductor structure includes a trench disposed in an inter-layer dielectric (ILD) layer. The trench has sidewalls, a bottom and a top. A U-shaped metal seed layer is disposed at the bottom of the trench and along the sidewalls of the trench but substantially below the top of the trench. A metal fill layer is disposed on the U-shaped metal seed layer and fills the trench to the top of the trench. The metal fill layer is in direct contact with dielectric material of the ILD layer along portions of the sidewalls of the trench above the U-shaped metal seed layer.
Abstract:
A conductive route structure may be formed comprising a conductive trace and a conductive via, wherein the conductive via directly contacts the conductive trace. In one embodiment, the conductive route structure may be formed by forming a dielectric material layer on the conductive trace. A via opening may be formed through the dielectric material layer to expose a portion of the conductive trace and a blocking layer may be from only on the exposed portion of the conductive trace. A barrier line may be formed on sidewalls of the via opening and the blocking layer may thereafter be removed. A conductive via may then be formed within the via opening, wherein the conductive via directly contacts the conductive trace.
Abstract:
A method of an aspect includes forming a first thicker layer of a first material over a first region having a first surface material by separately forming each of a first plurality of thinner layers by selective chemical reaction. The method also includes limiting encroachment of each of the first plurality of thinner layers over a second region that is adjacent to the first region. A second thicker layer of a second material is formed over the second region having a second surface material that is different than the first surface material.
Abstract:
Techniques are disclosed for insulating or electrically isolating select vias within a given interconnect layer, so a conductive routing can skip over those select isolated vias to reach other vias or interconnects in that same layer. Such a via blocking layer may be selectively implemented in any number of locations within a given interconnect as needed. Techniques for forming the via blocking layer are also provided, including a first methodology that uses a sacrificial passivation layer to facilitate selective deposition of insulator material that form the via blocking layer, a second methodology that uses spin-coating of wet-recessible polymeric formulations to facilitate selective deposition of insulator material that form the via blocking layer, and a third methodology that uses spin-coating of nanoparticle formulations to facilitate selective deposition of insulator material that form the via blocking layer. Harmful etching processes typically associated with conformal deposition processes is avoided.
Abstract:
Self-aligned gate endcap (SAGE) architectures without fin end gaps, and methods of fabricating self-aligned gate endcap (SAGE) architectures without fin end gaps, are described. In an example, an integrated circuit structure includes a semiconductor fin having a cut along a length of the semiconductor fin. A gate endcap isolation structure has a first portion parallel with the length of the semiconductor fin and is spaced apart from the semiconductor fin. The gate endcap isolation structure also has a second portion in a location of the cut of the semiconductor fin and in contact with the semiconductor fin.