International Business Machines Corporation
Thin film capacitors for core and adjacent build up layers

Abstract:

A device substrate includes a core material. A capacitor sheet can be affixed adjacent to a surface of the core material, where the capacitor sheet covers the surface of the core material. A first opening can extend through both capacitor sheet and the core material, where the first opening are larger than a substrate pass through-hole. An electrically inert material can fill the first opening. A second opening can extend parallel to the first opening through the electrically inert material, where the second opening is at least as large as the substrate pass through-hole and having sidewalls enclosed within the electrically inert material.