Abstract:
Electronic assemblies and their manufacture are described. One embodiment relates to a method including depositing an organic thin film layer on metal bumps on a semiconductor wafer, the organic thin film layer also being formed on a surface adjacent to the metal bumps on the wafer. The wafer is diced into a plurality of semiconductor die structures, the die structures including the organic thin film layer. The semiconductor die structures are attached to substrates, wherein the attaching includes forming a solder bond between the metal bumps on a die structure and bonding pads on a substrate, and wherein the solder bond extends through the organic thin film layer. The organic thin film layer is then exposed to a plasma. Other embodiments are described and claimed.
Abstract:
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.
Abstract:
Electronic assemblies and their manufacture are described. One embodiment relates to a method including depositing an organic thin film layer on metal bumps on a semiconductor wafer, the organic thin film layer also being formed on a surface adjacent to the metal bumps on the wafer. The wafer is diced into a plurality of semiconductor die structures, the die structures including the organic thin film layer. The semiconductor die structures are attached to substrates, wherein the attaching includes forming a solder bond between the metal bumps on a die structure and bonding pads on a substrate, and wherein the solder bond extends through the organic thin film layer. The organic thin film layer is then exposed to a plasma. Other embodiments are described and claimed.