Abstract: Embodiments of a microelectronic assembly that includes: a package substrate comprising a plurality of layers of organic dielectric material and conductive traces alternating with conductive vias in alternate layers of the organic dielectric material; and a plurality of integrated circuit dies coupled to a first side of the package substrate by interconnects, in which: the plurality of layers of the organic dielectric material comprises at least a first layer having a conductive via and a second layer having a conductive trace in contact with the conductive via, the second layer is not coplanar with the first layer, sidewalls of the conductive via are orthogonal to the conductive trace, and two opposing sidewalls of the conductive via separated by a width of the conductive via protrude from respectively proximate edges of the conductive trace by a protrusion that is at least ten times less than the width of the conductive via.

Abstract: Embodiments described herein enable a microelectronic assembly that includes: a first substrate comprising glass and at least one inductor, the first substrate having a first side and an opposing second side; a second substrate coupled to the first side of the first substrate; and a plurality of integrated circuit (IC) dies. A first subset of the plurality of IC dies is directly coupled to the second side of the first substrate, a second subset of the plurality of IC dies is directly coupled to the second substrate adjacent to the first substrate, and a third subset of the plurality of IC dies is embedded in the second substrate between the first substrate and the second subset of the plurality of IC dies.

Abstract: Embodiments of a microelectronic assembly includes: a package substrate and an integrated circuit (IC) die coupled to a surface of the package substrate by first interconnects and second interconnects, the first interconnects and the second interconnects comprising solder. The first interconnects are larger than the second interconnects, the first interconnects and the second interconnects further comprise bumps on the IC die and bond-pads on the surface of the package substrate, with the solder coupled to the bumps and the bond-pads, lateral sides of the bumps have a coating of a material that prevents solder wicking, and the surface of the package substrate includes insulative baffles between the bond-pads.

Abstract: Embodiments of a microelectronic assembly comprise: an interposer structure of glass, a substrate comprising organic dielectric material, the substrate coupled to a first side of the interposer structure; and a plurality of IC dies. A first IC die in the plurality of IC dies is coupled to the substrate by first interconnects, a second IC die in the plurality of IC dies is embedded in the organic dielectric material of the substrate, the second IC die is coupled to the first IC die by second interconnects, the second IC die is coupled to the first side of the interposer structure by third interconnects, and a third IC die in the plurality of IC dies is coupled to a second side of the interposer structure by fourth interconnects, the second side of the interposer structure being opposite the first side of the interposer structure.

Abstract: A hybrid plasmonic waveguide and associated methods are disclosed. In one example, the electronic device includes combining an electromagnetic wave propagating in a waveguide with a high refractive index and a surface plasmon from a metal surface to create a hybrid plasmon wave in a low refractive index material separating the dielectric waveguide and metal surface. In selected examples, surface mounted hybrid plasmonic waveguides are shown. In selected examples hybrid plasmonic waveguides embedded in glass interposers are shown.

Abstract: Disclosed herein are microelectronics package architectures utilizing photo-integrated glass interposers and photonic integrated glass layers and methods of manufacturing the same. The microelectronics packages may include an organic substrate, a photonic integrated glass layer, and a glass interpose. The organic substrate may define through substrate vias. The photonic integrated glass layer may be attached to the organic substrate. The photonic integrated glass layer may include photo detectors. The glass interposer may be attached to the organic substrate. The glass interposer may define through glass vias in optical communication with the photo detectors.

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 microelectronics package architectures utilizing in-situ high surface area capacitor in substrate packages and methods of manufacturing the same. The substrates may include an anode material, a cathode material, and a conductive material. The anode material may have an anode surface that may define a plurality of anode peaks and anode valleys. The cathode material may have a cathode surface that may define a plurality of cathode peaks and cathode valleys complementary to the plurality of anode peaks and anode valleys. The conductive material may be located at the anode peaks.

Abstract: Various embodiments disclosed relate to embedded components in glass core layers for semiconductor assemblies. The present disclosure includes a semiconductor assembly with a glass core having one or more cavities and a component embedded into the glass core at the one or more cavities portion, the component at least partially embedded in the glass core, and a semiconductor die attached to the substrate.

Abstract: Embodiments herein relate to systems, apparatuses, techniques for an optical waveguide that includes a plurality of pillar structures that are in an optical path between the optical waveguide and a PIC. In embodiments, the plurality of pillar structures form an evanescent coupling structure that increases the alignment tolerance between the PIC and the optical waveguide. In embodiments, an end of each of the plurality of pillar structures may include a mass of material, such as gold, silver, or copper, that light from the PIC interacts with in a Plasmon effect to focus the light on to the optical waveguide. Other embodiments may be described and/or claimed.

Abstract: Various embodiments disclosed relate to embedded components in glass core layers for semiconductor assemblies. The present disclosure includes a semiconductor assembly with a glass core having one or more cavities and a component embedded into the glass core at the one or more cavities portion, the component at least partially embedded in the glass core, and a semiconductor die attached to the substrate.

Abstract: Embodiments provides for a package substrate, including: a core comprising insulative material; first conductive traces in contact with a surface of the core; and buildup layers in contact with the first conductive traces and the surface of the core, the buildup layers comprising second conductive traces in an organic dielectric material. The first conductive traces comprise at least a first metal and a second metal, the first conductive traces comprise a first region proximate to and in contact with the core and a second region distant from the core, parallel and opposite to the first region, a relative concentration of the first metal to the second metal is higher in the first region than in the second region, and the relative concentration of the first metal to the second metal between the first region and the second region varies non-uniformly.

Abstract: Embodiments disclosed herein include electronic packages and methods of forming such packages. In an embodiment, the electronic package comprises a substrate and a conductive feature over the substrate. In an embodiment, a metallic mask is positioned over the conductive feature. In an embodiment, the metallic mask extends beyond a first edge of the conductive feature and a second edge of the conductive feature.

Abstract: Microelectronic assemblies, related devices and methods, are disclosed herein. In some embodiments, a microelectronic assembly may include a conductive pad having a first surface and an opposing second surface; a conductive via coupled to the first surface of the conductive pad; a microelectronic component having a conductive contact, the conductive contact of the microelectronic component electrically coupled, by an interconnect, to the second surface of the conductive pad, wherein a material of the interconnect includes nickel or tin; and a liner between the interconnect and the second surface of the conductive pad, and wherein a material of the liner includes nickel, palladium, or gold. In some embodiments, a bottom surface of the liner is curved outward towards the conductive pad. In some embodiments, the liner also may be on side surfaces of the interconnect.

Abstract: Disclosed herein are microelectronics package architectures having self-aligned air gaps and methods of manufacturing the same. The microelectronics packages may include first and second substrates, first and second traces, and a photosensitive material. The first trace may be attached to the first substrate and comprise a first sidewall. The second trace may be attached to the first substrate and comprise a second sidewall. The second traced may be spaced a distance from the first trace with the second sidewall facing the first sidewall. First and second portions of the photosensitive material may be attached to the first and second sidewalls, respectively. The second substrate may be attached to the first and second traces. The first and second substrates and the first and second traces may form the air gap in between the first and second traces.

Abstract: Embodiments disclosed herein include glass cores and methods of forming glass cores. In an embodiment, a core for an electronic package comprises a substrate with a first surface and a second surface opposite from the first surface, where the substrate comprises glass, In an embodiment, a via opening is provided through the substrate, and a diffusion layer is along the first surface, the second surface, and the via opening.

Abstract: Disclosed herein are microelectronics package architectures utilizing open cavity interconnects for multi-die interconnect bridges and methods of manufacturing the same. The microelectronics packages may include a substrate, a first die, a solder resist layer, a first pad, and a bridge. The substrate may have a substrate surface. The solder resist layer may be connected to the substrate and may define an opening. The first pad may protrude from the substrate surface. The bridge may be located at least partially within the opening and in between the first die and the substrate. The bridge may include a first via that forms a first electrical pathway from the first pad to the first die.

Abstract: Integrated circuit (IC) packages are disclosed. In some embodiments, an IC package includes a glass substrate, a micro light emitting diode (LED), a semiconductor die, one or more through glass vias (TGVs) and a package substrate. The micro LED is positioned over the glass substrate. The TGVs are integrated into the glass substrate and connect the micro LED to the semiconductor die. The semiconductor die is connected to the package substrate to receive external signals when connected to a motherboard.

Abstract: Embodiments disclosed herein include interposers and methods of forming interposers. In an embodiment, an interposer comprises a substrate with a first surface and a second surface opposite from the first surface, where the substrate comprises glass. In an embodiment, the interposer further comprises a cavity into the first surface of the substrate, a via through the substrate below the cavity, a first pad in the cavity over the via, and a second pad on the second surface of the substrate under the via.

Abstract: Microelectronic assemblies, related devices and methods, are disclosed herein. In some embodiments, a microelectronic assembly may include a conductive pad having a first surface, an opposing second surface, and lateral surfaces extending between the first and second surfaces; a conductive via coupled to the first surface of the conductive pad; a liner on the second surface and on the lateral surfaces of the conductive pad, wherein a material of the liner includes nickel, palladium, or gold; a microelectronic component having a conductive contact; and an interconnect electrically coupling the conductive contact of the microelectronic component and the liner on the second surface of the conductive pad, wherein a material of the interconnect includes nickel or tin.