Patent ID: 11955291
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A composite capacitor comprising:
a first capacitor including:
a first support electrode layer;
a plurality of first columnar conductors that extend from the first support electrode layer in a thickness direction of the first support electrode layer, and each of the plurality of first columnar conductors have a nano-size outer diameter;
a first dielectric layer that covers the first support electrode layer and the plurality of first columnar conductors; and
a first counter electrode layer that covers the first dielectric layer and that opposes the first support electrode layer and the plurality of first columnar conductors with the first dielectric layer interposed therebetween;

a second capacitor connected in series with the first capacitor, the second capacitor including:
a second support electrode layer that is disposed adjacent to and separate from the first support electrode layer in an in-plane direction of the first support electrode layer;
a plurality of second columnar conductors that extend from the second support electrode layer along an extending direction of the plurality of first columnar conductors and that each have a nano-size outer diameter;
a second dielectric layer that covers the second support electrode layer and the plurality of second columnar conductors; and
a second counter electrode layer that covers the second dielectric layer and that opposes the second support electrode layer and the plurality of second columnar conductors with the second dielectric layer interposed therebetween;

a connecting conductor layer bonded to a first surface of the first counter electrode layer, the first surface being positioned at a side of the first counter electrode layer opposite to the first support electrode layer, and that is also bonded to a second surface of the second counter electrode layer, the second surface being positioned at a side of the second counter electrode layer opposite to the second support electrode layer; and
a reinforcement conductor between the first counter electrode layer and the second counter electrode layer and that is connected to each of the first counter electrode layer, the second counter electrode layer, and the connecting conductor layer,
wherein a material forming the reinforcement conductor is identical to a material forming each of the first counter electrode layer and the second counter electrode layer and is different from a material forming the connecting conductor layer.