An electronics assembly includes a plurality of planar conductive metal sheets including a first conductive metal sheet, a second conductive metal sheet attached and electrically coupled to the first metal sheet, and a third conductive metal sheet attached and electrically coupled to the second metal sheet. The second metal sheet is located between the first and third conductive metal sheets. Air gaps are defined in the plurality of planar conductive metal sheets to form metal traces that define electrically isolated conductive paths from an outer surface of the first conductive metal sheet to an outer surface of the third conductive metal sheet in a multilevel conductive wiring network. The multilevel conductive wiring network can be attached and electrically coupled to a microchip and to one or more capacitors to form a power converter.

An electronic package is provided in which an electronic structure is bonded onto a carrier structure via a plurality of conductive elements, where each of the conductive elements is connected to a single contact of the electronic structure via a plurality of conductive pillars. Therefore, when one of the conductive pillars fails, each of the conductive elements can still be electrically connected to the contact via the other of the conductive pillars to increase electrical conductivity.

A current sensor integrated circuit (IC) package is flip-chip bonded using a conductive film to connect the IC circuit bond pads to the lead frame. A conductive film is positioned between the die surface of a semiconductor die and at least one signal lead of the lead frame. The conductive film is conductive in a first direction between the die and the signal lead and nonconductive in other directions. The conductive film is further configured to control a gap height between the die and the lead frame to reduce die tilt, thus improving the sensitivity and performance consistency of the package.

In an embodiment, a device includes: a first integrated circuit die comprising a semiconductor substrate and a first through-substrate via; a gap-fill dielectric around the first integrated circuit die, a surface of the gap-fill dielectric being substantially coplanar with an inactive surface of the semiconductor substrate and with a surface of the first through-substrate via; a dielectric layer on the surface of the gap-fill dielectric and the inactive surface of the semiconductor substrate; a first bond pad extending through the dielectric layer to contact the surface of the first through-substrate via, a width of the first bond pad being less than a width of the first through-substrate via; and a second integrated circuit die comprising a die connector bonded to the first bond pad.

A device comprises a substrate) of a first material with a surface, which is modified by depositing a bi-layer nanoparticle film. The film includes a nanoparticle layer of a second material on top of and in contact with surface, and a nanoparticle layer of a third material on top of and in contact with the nanoparticle layer of the second material. The nanoparticles of the third material adhere to the nanoparticles of the second material. The substrate region adjoining surface comprises an admixture of the second material in the first material. A fourth material contacts and chemically/mechanically bonds to the nanoparticle layer of the third material.

A method includes: providing an active photonic component of a photonic integrated circuit (PIC); attaching two electrodes to the active photonic component of the PIC; providing a first landing pad on a front surface of the PIC, wherein, when viewed from a direction perpendicular to the front surface of the PIC, a center of the active photonic component of the PIC is offset from a nearest edge of the first landing pad by about a distance less than 10 m; and electrically connecting the first landing pad to one of the two electrodes.

An integrated circuit package includes a substrate, a semiconductor interposer on the substrate, and a first integrated circuit chip on the interposer. The interposer includes a galvanic effect test structure including a test contact pad and a detection contact pad. The interposer includes a plurality of primary contact pads electrically coupled to the first integrated circuit chip. The galvanic effect structure can be utilized to test the interposer for galvanic corrosion prior to assembling the interposer into the integrated circuit package.

Microelectronic assemblies, related devices and methods, are disclosed herein. In some embodiments, a microelectronic assembly may include a first die and a through-dielectric via (TDV) surrounded by a dielectric material in a first layer, where the TDV has a greater width at a first surface and a smaller width at an opposing second surface of the first layer; a second die, surrounded by the dielectric material, in a second layer on the first layer, where the first die is coupled to the second die by interconnects having a pitch of less than 10 microns, and the dielectric material around the second die has an interface seam extending from a second surface of the second layer towards an opposing first surface of the second layer with an angle of less than 90 degrees relative to the second surface; and a substrate on and coupled to the second layer.

A semiconductor device has a first semiconductor package, second semiconductor package, and RDL. The first semiconductor package is disposed over a first surface of the RDL and the second semiconductor package is disposed over a second surface of the RDL opposite the first surface of the RDL. A carrier is initially disposed over the second surface of the RDL and removed after disposing the first semiconductor package over the first surface of the RDL. The first semiconductor package has a substrate, plurality of conductive pillars formed over the substrate, electrical component disposed over the substrate, and encapsulant deposited around the conductive pillars and electrical component. A shielding frame can be disposed around the electrical component. An antenna can be disposed over the first semiconductor package. A portion of the encapsulant is removed to planarize a surface of the encapsulant and expose the conductive pillars.

An electronic device may include a display having a monolithic array of light-emitting diodes mounted to a surface of a substrate layer. The diodes may include contact pads. Driver circuitry may independently drive each of the diodes in the array using drive signals. The driver circuitry may be formed on a driver integrated circuit. Bond pads may be formed on a surface of the integrated circuit. Copper pillars may be grown on the bond pads. In another suitable arrangement, the driver circuitry may be formed on a driver printed circuit board coupled to an interposer by a flexible printed circuit. The interposer may include bond pads and copper pillars grown on the bond pads. The contact pads on each of the diodes may be simultaneously bonded to the copper pillars. A surface of the substrate layer may be patterned to form light redirecting elements if desired.