Capacitor component

Patent metadata

Field	Value
Publication number	US-11742142-B2
Application number	US-202217581060-A
Country	US
Kind code	B2
Filing date	Jan 21, 2022
Priority date	Feb 9, 2021
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

Disclosed herein is a capacitor component that includes a lower electrode, a capacitive insulating film covering the lower electrode, a plurality of upper electrodes overlapping the lower electrode through the capacitive insulating film, a first external terminal connected to the lower electrode, a plurality of fuse wires connected respectively to the plurality of upper electrodes, and a second external terminal connected in common to the plurality of fuse wires. The resistance values of the plurality of respective fuse wires are higher than the resistance values of the plurality of corresponding upper electrodes.

First claim

What is claimed is:

1. A capacitor component comprising:
a lower electrode;
a capacitive insulating film covering the lower electrode;
a plurality of upper electrodes overlapping the lower electrode through the capacitive insulating film;
a first external terminal connected to the lower electrode;
a plurality of fuse wires connected respectively to the plurality of upper electrodes; and
a second external terminal connected in common to the plurality of fuse wires,
wherein resistance values of the plurality of respective fuse wires are higher than resistance values of the plurality of corresponding upper electrodes, and
wherein each of the plurality of fuse wires includes:
a first section in which current flows in a first direction; and
a second section disposed in close vicinity of the first section and in which current flows in a second direction opposite to the first direction.

2. The capacitor component as claimed in claim 1 , wherein the plurality of fuse wires comprise a conductive material different from that of the plurality of upper electrodes.

3. The capacitor component as claimed in claim 1 , wherein each of the plurality of fuse wires includes:
a wiring pattern disposed above an associated one of the plurality of upper electrodes through an insulating layer; and
a via conductor penetrating the insulating layer and connecting the associated one of the plurality of upper electrodes and the wiring pattern.

4. The capacitor component as claimed in claim 1 , wherein a plurality of the lower electrodes and a plurality of upper electrode layers each having the plurality of upper electrodes are alternately stacked via the capacitive insulating film.

Assignees

• Tdk Corp

Inventors

• Saita Hitoshi

Classifications

• H01G2/16 Primary

  with fusing elements · CPC title

• H01G4/005

  Electrodes · CPC title

• H01G4/228

  Terminals · CPC title