Abstract: Techniques for a coaxial inductor in a glass core are disclosed. In an illustrative embodiment, an inductor is positioned in a cavity of a glass core. The inductor includes a conductive via extending through the glass core surrounded by a magnetic material. A buffer layer is positioned between the edges of the cavity of the glass core and the inductor. The buffer can prevent or mitigate any stress caused by changes in temperature and different coefficients of thermal expansion of the glass core and the inductor. The inductor may form part of a fully integrated voltage regulator (FIVR), which provides a stable voltage source to a semiconductor die such as a processor.

Abstract: Coaxial magnetic inductor structures useful for semiconductor packaging applications are provided. The coaxial magnetic inductors can be located in semiconductor package cores and the semiconductor package cores can be, for example, comprised of an amorphous solid glass material. Methods of manufacturing a coaxial magnetic inductors in a package substrate core are also provided.

Abstract: A microelectronic assembly includes a bridge die embedded in a substrate. The substrate includes a doped dielectric material in a layer or region directly below the bridge die, and in a layer near an upper face of the bridge die. A cavity is formed in the upper layer of the doped dielectric material for embedding the bridge die, exposing the lower layer of the doped dielectric material. After cavity formation, a selective metallization of the lower and upper layers of the doped dielectric material is performed, providing well-aligned metal layers in the region of the bridge die and the region around the bridge die.

Abstract: A microelectronic assembly includes an embedded bridge die and a glass structure, such as glass patch, under the bridge die. The bridge die and the glass structure are embedded in a substrate. The assembly may further include two or more dies arranged over the substrate and coupled to the bridge die. The glass structure may include through-glass vias, and vias in the substrate below the glass structure are self-aligned to the through-glass vias. The glass structure may include an embedded passive device, such as an embedded inductor or capacitor.

Abstract: Microelectronic assemblies, related devices and methods, are disclosed herein. In some embodiments, a microelectronic assembly may include a first die in a first dielectric layer; a magnetic core inductor, having a first surface and an opposing second surface, in the first dielectric layer, including a first conductive pillar, having a first end at the first surface of the magnetic core inductor and an opposing second end at the second surface, at least partially surrounded by a magnetic material that extends at least partially along a thickness of the first conductive pillar from the second end and tapers towards the first end; and a second conductive pillar coupled to the first conductive pillar; and a second die in a second dielectric layer on the first dielectric layer coupled to the second surface of the magnetic core inductor.

Abstract: Microelectronic assemblies, related devices and methods, are disclosed herein. In some embodiments, a microelectronic component may include a substrate having a first face and an opposing second face, wherein the substrate includes a through-substrate via (TSV); a first mold material region at the first face, wherein the first mold material region includes a first through-mold via (TMV) conductively coupled to the TSV; and a second mold material region at the second face, wherein the second mold material region includes a second TMV conductively coupled to the TSV.

Abstract: Photonic packages and device assemblies that include photonic integrated circuits (PICs) coupled to optical lenses on lateral sides of the PICS. An example photonic package comprises a package support, an integrated circuit (IC), an insulating material, a PIC having an active side and a lateral side substantially perpendicular to the active side. At least one optical structure is on the active side. A substantial portion of the active side is in contact with the insulating material, and the PIC is electrically coupled to the package support and to the IC. The photonic package further includes an optical lens coupled to the PIC on the lateral side. In some embodiments, the photonic package further includes an interposer between the PIC or the IC and the package support.

Abstract: A z-disaggregated integrated circuit package substrate assembly comprises a first substrate component (a coreless patch), a second substrate component (a core patch), and a third substrate component (an interposer). The coreless patch comprises thinner dielectric layers and higher density routing and can comprise an embedded bridge to allow for communication between integrated circuit dies attached to the coreless patch. The core layer acts as a middle layer interconnect between the coreless patch and the interposer and comprises liquid metal interconnects to connect the core patch physically and electrically to the coreless patch and the interposer. Core patch through holes comprise liquid metal plugs. Some through holes can be surrounded by and coaxially aligned with magnetic plugs to provide improved power signal delivery. The interposer comprises thicker dielectric layers and lower density routing.

Abstract: Technologies for substrate features for a pluggable optical connectors in an integrated circuit package are disclosed. In the illustrative embodiment, a substrate includes a cavity cut through a substrate of the integrated circuit package. Sidewalls of the cavity establish coarse lateral alignment features for an optical plug. The optical plug and optical socket include additional alignment features to more precisely align optical fibers in the optical plug to an optical interposer mounted on the substrate. The cavity cut through the substrate may also include indents that can mate with protrusions of the optical plug to retain the optical plug. The optical interposer may be mounted on a recessed shelf in the substrate.

Abstract: Photonic packages and device assemblies that include photonic integrated circuits (PICs) coupled to optical lenses on lateral sides of the PICs. An example photonic package comprises a package support, an integrated circuit (IC), an insulating material, a PIC having an active side and a lateral side substantially perpendicular to the active side. At least one optical structure is on the active side. A substantial portion of the active side is in contact with the insulating material, and the PIC is electrically coupled to the package support and to the IC. The photonic package further includes an optical lens coupled to the PIC on the lateral side. In some embodiments, the photonic package further includes an interposer between the PIC or the IC and the package support.

Abstract: Microelectronic assemblies, related devices and methods, are disclosed herein. In some embodiments, a microelectronic component may include a substrate having a first face and an opposing second face, wherein the substrate includes a through-substrate via (TSV); a first mold material region at the first face, wherein the first mold material region includes a first through-mold via (TMV) conductively coupled to the TSV; and a second mold material region at the second face, wherein the second mold material region includes a second TMV conductively coupled to the TSV.

Abstract: Embodiments disclosed herein include electronic packages and methods of making electronic packages. In an embodiment, the electronic package comprises a package substrate, an array of first level interconnect (FLI) bumps on the package substrate, wherein each FLI bump comprises a surface finish, a first pad on the package substrate, wherein the first pad comprises the surface finish, and wherein a first FLI bump of the array of FLI bumps is electrically coupled to the first pad, and a second pad on the package substrate, wherein the second pad is electrically coupled to the first pad.

Abstract: Embodiments disclosed herein include package substrates with glass stiffeners. In an embodiment, the package substrate comprises a first layer, where the first layer comprises glass. In an embodiment, the package substrate comprises a second layer over the first layer, where the second layer is a buildup film. In an embodiment, the package substrate further comprises an electrically conductive interconnect structure through the first layer and the second layer.

Abstract: A semiconductor device and associated methods are disclosed. In one example, the electronic device includes a photonic die and a glass substrate. In selected examples, the semiconductor device includes one or more turning mirrors to direct an optical signal between the photonic die and the glass substrate. Configurations of turning mirrors are provided to improve signal integrity and manufacturability.

Abstract: Embodiments disclosed herein include package substrates. In an embodiment, the package substrate comprises a core and buildup layers over the core. In an embodiment, a pad is provided on the buildup layers. In an embodiment, a liquid metal well is over the pad.

Abstract: A microelectronic assembly includes a substrate comprising: a panel including glass and defining an opening therein; an interconnect bridge (IB) in the opening and including interconnect pathways and IB through vias (IBTVs); and electrically conductive structures at a lower surface of the substrate to electrically couple the substrate to another component, at least some of the electrically conductive structures coupled to the IBTVs to form respective vertical electrical connections between the lower surface of the substrate and an upper surface of the substrate; and an electronic component (EC) layer on the upper surface of the substrate, the EC layer including a first active EC (AEC) and a second AEC electrically coupled to one another through the interconnect pathways, at least one of the first AEC or the second AECs further electrically coupled to one or more of the at least some of the electrically conductive structures.

Abstract: Embodiments of a microelectronic assembly that includes: a package substrate, comprising buildup layers of an organic dielectric material and a plurality of layers of conductive traces in the organic dielectric material, the package substrate having a first surface and a second surface opposite the first surface; and a plurality of integrated circuit (IC) dies coupled to the package substrate on the first side. The plurality of layers of conductive traces comprises a pair of stripline traces or microstrips in one of the layers, the stripline traces or microstrips are surrounded by air gap structures in the organic dielectric material, and the air gap structures are exposed on the first surface.

Abstract: An electronic device includes a substrate including a core layer; a cavity formed in the core layer, wherein the cavity includes sidewalls plated with a conductive material; a prefabricated passive electronic component disposed in the cavity; and a cavity sidewall connection providing electrical continuity from the plated cavity sidewalls to a first surface of the substrate and to a second surface of the substrate.

Abstract: Disclosed herein are microelectronic structures including bridges, as well as related assemblies and methods. In some embodiments, a microelectronic structure may include a substrate and a bridge.

Abstract: In one embodiment, an integrated circuit device includes a substrate, an electronic integrated circuit (EIC), a photonics integrated circuit (PIC) electrically coupled to the EIC, and a glass block at least partially in a cavity defined by the substrate and at an end of the substrate. The glass block defines an optical path with one or more optical elements to direct light between the PIC and a fiber array unit (FAU) when attached to the glass block.