Intel Corporation

Yueli Liu

Qinglei Zhang

Amanda E Schuckman

Rui Zhang

Kyu Oh Lee

Tao Wu

Islam A Salama

Mihir K Roy

Mark S Hlad

Chong Zhang

Embodiments of the present disclosure are directed towards techniques and configurations for layered interconnect structures for bridge interconnection in integrated circuit assemblies. In one embodiment, an apparatus may include a substrate and a bridge embedded in the substrate. The bridge may be configured to route electrical signals between two dies. An interconnect structure, electrically coupled with the bridge, may include a via structure including a first conductive material, a barrier layer including a second conductive material disposed on the via structure, and a solderable material including a third conductive material disposed on the barrier layer. The first conductive material, the second conductive material, and the third conductive material may have different chemical composition. Other embodiments may be described and/or claimed.

Bridge interconnection with layered interconnect structures

Embodiments are generally directed to indium solder metallurgy to control electro-migration. An embodiment of an electronic device includes a die; and a package substrate, wherein the die is bonded to the package substrate by an interconnection. The interconnection includes multiple interconnects, and wherein the interconnection includes a solder. The solder for the interconnection includes a combination of tin (Sn), copper (Cu), and indium (In).

Indium solder metallurgy to control electro-migration

Embodiments of the present disclosure are directed towards coreless substrates with passive device pads, as well as methods for forming coreless substrates with passive device pads and package assemblies and systems incorporating such coreless substrates. A coreless substrate may comprise a plurality of build-up layers, such as bumpless build-up layers (BBUL). In various embodiments, electrical routing features and passive device pads may be disposed on an outer surface of the substrate. In various embodiments, the passive device pads may be coupled with a conductive element disposed on or within the build-up layers. In various embodiments, an electrical path may be defined in the plurality of build-up layers to route electrical power between the passive device pads and a die coupled to the coreless substrate.

Coreless substrate with passive device pads

Embodiments of the present disclosure describe techniques and configurations for package assembly including an embedded element and a molded insulator material. In some embodiments, an apparatus includes an electrical element (such as a die or a bridge interconnect structure) positioned on a surface of an insulator layer, a conductive pad positioned on the surface of the insulator layer and spaced apart from the electrical element, and a molded insulator material disposed on the surface of the insulator layer adjacent to the electrical element and on the conductive pad. Other embodiments may be described and/or claimed.

Molded insulator in package assembly

Package substrates enabling reduced bump pitches and package assemblies thereof. Surface-level metal features are embedded in a surface-level dielectric layer with surface finish protruding from a top surface of the surface-level dielectric for assembly, without solder resist, to an IC chip having soldered connection points. Package substrates are fabricated to enable multiple levels of trace routing with each trace routing level capable of reduced minimum trace width and spacing.

Device packaging with substrates having embedded lines and metal defined pads

Embodiments of the present disclosure are directed towards interconnect structures for embedded bridge in integrated circuit (IC) package assemblies. In one embodiment, a method includes depositing an electrically insulative layer on a bridge interconnect structure, the bridge interconnect structure including a die contact that is configured to route electrical signals between a first die and a second die, depositing a sacrificial layer on the electrically insulative layer, forming an opening through the sacrificial layer and the electrically insulative layer to expose the die contact and forming a die interconnect of the first die or the second die by depositing an electrically conductive material into the opening. Other embodiments may be described and/or claimed.

Growing community of inventors

Gilbert, AZ, United States of America

Yueli Liu