Abstract: Embodiments disclosed herein include glass core package substrates with a stiffener. In an embodiment, an apparatus comprises a substrate with a first layer with a first width, where the first layer is a glass layer, a second layer under the first layer, where the second layer has a second width that is smaller than the first width, and a third layer over the first layer, where the third layer has a third width that is smaller than the first width. In an embodiment, the apparatus further comprises a metallic structure with a first portion and a second portion, where the first portion is over a top surface of the substrate and the second portion extends away from the first portion and covers at least a sidewall of the first layer.

Abstract: Technologies for fiber array unit (FAU) lid designs are disclosed. In one embodiment, channels in the lid allow for suction to be applied to fibers that the lid covers, pulling the fibers into place in a V-groove. The suction can hold the fibers in place as the fiber array unit is mated with a photonic integrated circuit (PIC) die. Additionally or alternatively, channels can be on pitch, allowing for pulling the FAU towards a PIC die as well as sensing the position and alignment of the FAU to the PIC die. In another embodiment, a warpage amount of a PIC die is characterized, and a FAU lid with a similar warpage is fabricated, allowing for the FAU to position fibers correctly relative to waveguides in the PIC die. In another embodiment, a FAU has an extended lid, which can provide fiber protection as well as position and parallelism tolerance control.

Abstract: Glass cores including protruding through glass vias and related methods are disclosed herein. An example substrate disclosed herein includes a glass core including a surface and a copper through glass via (TGV) extending through the glass core, the TGV including a protrusion extending from the surface.

Abstract: In one embodiment, an apparatus comprises a substrate with conductive contacts on a first side of the substrate and a housing coupled to the first side of the substrate. The housing defines a set of holes around the conductive contacts. The apparatus further includes Gallium-based liquid metal in each hole, with the liquid metal being in contact with the conductive contact of the hole. The apparatus further includes a passivation layer on a surface of the liquid metal in each hole, the passivation layer being on an opposite end of the hole from the conductive contact in the hole.

Abstract: Embodiments described herein may be related to apparatuses, processes, and techniques related to hydrophobic features to block or slow the spread of epoxy. These hydrophobic features are placed either on a die surface or on a substrate surface to control epoxy spread between the die in the substrate to prevent formation of fillets. Packages with these hydrophobic features may include a substrate, a die with a first side and a second side opposite the first side, the second side of the die physically coupled with a surface of the substrate, and a hydrophobic feature coupled with the second side of the die or the surface of the substrate to reduce a flow of epoxy on the substrate or die. In embodiments, these hydrophobic features may include a chemical barrier or a laser ablated area on the substrate or die. Other embodiments may be described and/or claimed.

Abstract: Embodiments disclosed herein include an electronic package. In an embodiment, the electronic package comprises a package substrate with a first surface and a second surface opposite from the first surface. In an embodiment, pads are on the first surface of the package substrate, where the pads have a first width. In an embodiment, a layer is on the first surface of the package substrate, where the layer comprises wells through the layer, and where the wells have a second width that is wider than the first width. In an embodiment, a liquid metal is in the wells and in contact with the pads.

Abstract: Embodiments disclosed herein include a package substrate. In an embodiment, the package substrate comprises a substrate with a layer on the substrate. In an embodiment, the layer comprises a plurality of wells. In an embodiment, a liquid metal is in the plurality of wells. In an embodiment, a cap is on the layer to seal the plurality of wells, where the cap comprises a polymer, and fibers within the polymer.

Abstract: Embodiments described herein may be related to apparatuses, processes, and techniques related to hydrophobic features to block or slow the spread of epoxy. These hydrophobic features are placed either on a die surface or on a substrate surface to control epoxy spread between the die in the substrate to prevent formation of fillets. Packages with these hydrophobic features may include a substrate, a die with a first side and a second side opposite the first side, the second side of the die physically coupled with a surface of the substrate, and a hydrophobic feature coupled with the second side of the die or the surface of the substrate to reduce a flow of epoxy on the substrate or die. In embodiments, these hydrophobic features may include a chemical barrier or a laser ablated area on the substrate or die. Other embodiments may be described and/or claimed.

Abstract: Embodiments disclosed herein include a package substrate. In an embodiment, the package substrate comprises a first layer and a second layer over the first layer. In an embodiment, the second layer comprises a dielectric material including sulfur. In an embodiment, fillers are within the second layer. In an embodiment, the fillers have a volume fraction that is less than approximately 0.2.

Abstract: Methods, systems, apparatus, and articles of manufacture to improve reliability of vias in a glass substrate of an integrated circuit package are disclosed. An example integrated circuit (IC) package substrate includes a glass substrate, a via extending between first and second surfaces of the glass substrate, and a conductive material provided in the via, the conductive material including gallium and silver.

Abstract: Techniques and mechanisms for facilitating heat conductivity in a packaged device with a dummy die. In an embodiment, a packaged device comprises a substrate and one or more IC die coupled to a surface thereof. A dummy die, adjacent to an IC die and coupled to a region of the substrate, comprises a polymer resin and a filler. A package mold structure of the packaged device adjoins respective sides of the IC die and the dummy die, and adjoins the surface of the substrate. In another embodiment, a first CTE of the dummy die is less than a second CTE of the package mold structure, and a first thermal conductivity of the dummy die is greater than a second thermal conductivity of the package mold structure.

Abstract: Capillary underfill formulations that may include fillers. The fillers may include carbon nanotubes, such as surface functionalized carbon nanotubes. Methods for forming capillary underfill materials that may have improved fracture toughness, reduced crack propagation, and a reduced likelihood of delamination. The surface functionalized carbon nanotubes may include amine functionalized carbon nanotubes. Containers, such as syringes, that may have a reservoir in which a capillary underfill formulation is disposed.

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: 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: 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: Methods, systems, apparatus, and articles of manufacture to produce integrated circuit (IC) packages having silicon nitride adhesion promoters are disclosed. An example IC package disclosed herein includes a metal layer on a substrate, a layer on the metal layer, the layer including silicon and nitrogen, and solder resist on the layer.

Abstract: An integrated circuit device substrate includes a first glass layer with a redistribution layer mounting region and an integrated circuit device mounting region, wherein a first major surface of the first glass layer is overlain by a first dielectric layer, and wherein the first glass layer includes a first plurality of conductive pillars. A second glass layer is on the redistribution layer mounting region on the first glass layer, wherein the second glass layer includes a second dielectric layer on a second major surface thereof, and wherein the second dielectric layer is bonded to the first dielectric layer on the first major surface of the first glass layer, the second glass layer including a second plurality of conductive pillars electrically interconnected with the first plurality of conductive pillars in the first glass layer.

Abstract: An integrated circuit device substrate includes a first glass layer, a second glass layer, and a dielectric interface layer between the first glass layer and the second glass layer. A plurality of conductive pillars extend through the first glass layer, the dielectric layer and the second glass layer, wherein the conductive pillars taper from a first diameter in the dielectric layer to a second diameter in the first glass layer and the second glass layer, and wherein the first diameter is greater than the second diameter.

Abstract: A substrate for an electronic system includes a glass core layer. The glass core layer includes a first surface and a second surface opposite the first surface; and at least one through-glass via (TGV) extending through the glass core layer from the first surface to the second surface. The TGV includes an opening filled with an electrically conductive material; and a via liner including a sidewall material disposed on a sidewall of the opening between the glass of the glass core layer and the electrically conductive material, wherein the sidewall material includes carbon.

Abstract: Methods and apparatus for optical thermal treatment in semiconductor packages are disclosed. A disclosed example integrated circuit (IC) package includes a dielectric substrate, an interconnect associated with the dielectric substrate, and light absorption material proximate or surrounding the interconnect, the light absorption material to increase in temperature in response to being exposed to a pulsed light for thermal treatment corresponding to the IC package.