Capacitor component

Patent metadata

Field	Value
Publication number	US-9666374-B2
Application number	US-201514797298-A
Country	US
Kind code	B2
Filing date	Jul 13, 2015
Priority date	Jul 24, 2014
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A capacitor component includes an element assembly, a first external electrode, and a second external electrode. The element assembly includes first and second internal electrode layers, a first connecting conductive layer extending along a fifth outer surface of the element assembly and connected to each of the first internal electrode layers, a first covering insulating layer covering the first connecting conductive layer, a second connecting conductive layer extending along a sixth outer surface of the element assembly and connected to each of the second internal electrode layers, and a second covering insulating layer covering the second connecting conductive layer. Only a portion of the first internal electrode layers are extended to the third outer surface and connected to the first external electrode, and only a portion of the internal electrode layers are extended to the fourth outer surface and connected to the second external electrode.

First claim

What is claimed is:

1. A capacitor component comprising:
an element assembly including:
a first outer surface and a second outer surface opposing each other;
a third outer surface and a fourth outer surface opposing each other; and
a fifth outer surface and a sixth outer surface opposing each other;

a first external electrode disposed on the third outer surface; and
a second external electrode disposed on the fourth outer surface; wherein
the element assembly includes a plurality of dielectric layers and a plurality of internal electrode layers alternately laminated in a laminating direction perpendicular or substantially perpendicular to the first outer surface;
the plurality of internal electrode layers include:
a plurality of first internal electrode layers electrically connected to the first external electrode; and
a plurality of second internal electrode layers electrically connected to the second external electrode; wherein

the element assembly further includes:
a first connecting conductive layer extending along the fifth outer surface and connecting to an end portion on the fifth outer surface side of each of the plurality of first internal electrode layers; and
a first covering insulating layer covering the first connecting conductive layer and defining the fifth outer surface;

at least one of the plurality of first internal electrode layers extends to the third outer surface and connect to the first external electrode;
at least one of the plurality of first internal electrode layers is separated from the third outer surface;
an outer edge of each of the plurality of first internal electrode layers linearly extends along the fourth outer surface; and
an outer edge of each of the plurality of second internal electrode layers linearly extends along the third outer surface.

2. The capacitor component according to claim 1 , wherein the first connecting conductive layer extends to the third outer surface and is connected to the first external electrode.

3. The capacitor component according to claim 1 , wherein the element assembly includes:
a second connecting conductive layer extending along the sixth outer surface and connecting to an end portion on the sixth outer surface side of each of the plurality of second internal electrode layers; and
a second covering insulating layer covering the second connecting conductive layer and defining the sixth outer surface; wherein
at least one of the plurality of second internal electrode layers extend to the fourth outer surface and connect to the second external electrode; and
at least one of the plurality of second internal electrode layers are separated from the fourth outer surface.

4. The capacitor component according to claim 3 , wherein the second connecting conductive layer is extended to the fourth outer surface and connected to the second external electrode.

5. The capacitor component according to claim 3 , wherein the element assembly includes:
a plurality of first auxiliary conductive layers positioned in a same plane perpendicular or substantially perpendicular to the laminating direction as each of the plurality of second internal electrode layers and connected to the first connecting conductive layer; and
a plurality of second auxiliary conductive layers positioned in a same plane perpendicular or substantially perpendicular to the laminating direction as each of the plurality of first internal electrode layers and connected to the second connecting conductive layer.

6. The capacitor component according to claim 1 , wherein
the element assembly includes a second covering insulating layer defining the sixth outer surface; and
the plurality of the second internal conductive layer are directly covered by the second covering insulating layer.

7. The capacitor component according to claim 3 , wherein
the first connecting conductive layer is extended to the third outer surface and connected to the first external electrode; and
the second connecting conductive layer is extended to the fourth outer surface and connected to the second external electrode.

8. The capacitor component according to claim 3 , wherein
all of the first internal electrode layers are connected to the first external electrode;
all of the second internal electrode layers are connected to the second external electrode;
the first connecting conductive layer is connected to the first external electrode; and
the second connecting conductive layer is connected to the second external electrode.

9. The capacitor component according to claim 3 , wherein
the plurality of first internal electrode layers and the first connecting conductive layer are extended to the third outer surface and connected to the first external electrode; and
the plurality of second internal electrode layers and the second connecting conductive layer are extended to the fourth outer surface and connected to the second external electrode.

10. A capacitor component comprising:
an element assembly including:
a first outer surface and a second outer surface opposing each other;
a third outer surface and a fourth outer surface opposing each other; and
a fifth outer surface and a sixth outer surface opposing each other;

a first external electrode disposed on the third outer surface; and
a second external electrode disposed on the fourth outer surface; wherein
the element assembly includes a plurality of dielectric layers and a plurality of internal electrode layers alternately laminated in a laminating direction perpendicular or substantially perpendicular to the first outer surface;
the plurality of internal electrode layers include:
a plurality of first internal electrode layers electrically connected to the first external electrode; and
a plurality of second internal electrode layers electrically connected to the second external electrode;

the element assembly further includes:
a first connecting conductive layer extending along the fifth outer surface and connecting to an end portion on the fifth outer surface side of each of the plurality of first internal electrode layers; and
a first covering insulating layer covering the first connecting conductive layer and defining the fifth outer surface;

the first connecting conductive layer is extended to the third outer surface and connected to the first external electrode;
an outer edge of each of the plurality of first internal electrode layers linearly extends along the fourth outer surface; and
an outer edge of each of the plurality of second internal electrode layers linearly extends along the third outer surface.

11. The capacitor component according to claim 10 , wherein the element assembly includes:
a second connecting conductive layer extending along the sixth outer surface and connecting to an end portion on the sixth outer surface side of each of the plurality of second internal electrode layers; and
a second covering insulating layer covering the second connecting conductive layer and defining the sixth outer surface; wherein
the second connecting conductive layer is extended to the fourth outer surface and connected to the second external electrode.

12. The capacitor component according to claim 11 , wherein the element assembly includes:
a first auxiliary conductive layer positioned in a same plane perpendicular or substantially perpendicular to the laminating direction as each of the plurality of second internal electrode layers and connected to the first connecting conductive layer; and
a second auxiliary conductive layer positioned in a same plane perpendicular or substantially perpendicular to the laminating direction as each of the plurality

Assignees

• Murata Manufacturing Co

Inventors

• Hattori Kazuo

Classifications

• H01G4/30 Primary

  Stacked capacitors (H01G4/33 takes precedence) · CPC title

• H01G4/232

  electrically connecting two or more layers of a stacked or rolled capacitor · CPC title

• H01G4/12

  Ceramic dielectrics {(H01G4/085 takes precedence)} · CPC title

• H01G4/224

  Housing; Encapsulation · CPC title