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US 6,072,690 AGranted
High k dielectric capacitor with low k sheathed signal vias
AssigneeInternational Business Machines Corporation
InventorsMukta S. Farooq, Harvey C. Hamel, Robert A. Rita, Herbert I. Stoller
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Abstract
A multi-layer ceramic capacitor and method of manufacturing the capacitor, the capacitor having signal vias surrounded by an area containing a material having a low dielectric constant, the via and surrounding area of low dielectric constant material inserted in a material having a high dielectric constant.
Claims7
A multilayer ceramic capacitor comprising in combination:
- a capacitor structure being a plurality of layers of high dielectric constant material disposed between metallic electrodes;
- and
- at least one metal via passing through said layers of high dielectric constant material and end portions of said electrodes and said metal via sheathed in a material of low dielectric constant material separating said metal via from said high dielectric constant material and said electrodes.
Dependencies are inferred from the claim text.