Capacitor component

Patent metadata

Field	Value
Publication number	US-11145462-B2
Application number	US-201916658652-A
Country	US
Kind code	B2
Filing date	Oct 21, 2019
Priority date	Jul 2, 2019
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

A capacitor component includes a body including a dielectric layer, a layering portion in which first and second internal electrodes opposing each other are layered in a first direction, and first and second connecting portions disposed on both surfaces of the layering portion taken in a second direction perpendicular to the first direction and connected to the first and second internal electrodes, respectively; and first and second external electrodes disposed on the first and second connecting portions, respectively, and the first and second external electrodes include metal powder particles, a surface of each of which is coated with at least one of graphene and carbon nanotubes.

First claim

What is claimed is:

1. A capacitor component, comprising:
a body including
a layering portion comprising first and second internal electrodes opposing each other and layered in a first direction with a dielectric layer interposed therebetween, and
first and second connecting portions disposed on opposing surfaces of the layering portion taken in a second direction perpendicular to the first direction and respectively connected to the first and second internal electrodes; and

first and second external electrodes disposed on the first and second connecting portions, respectively,
wherein the first and second external electrodes include metal particles and glass, at least one of the metal particles having a surface thereof coated with at least one of graphene or carbon nanotubes, and
wherein an entire surface of at least one of the metal particles is coated with the at least one of graphene or carbon nanotubes.

2. The capacitor component of claim 1 , wherein the first and second connecting portions include a metal layer disposed on the layering portion and a ceramic layer disposed on the metal layer.

3. The capacitor component of claim 2 , wherein a thickness of the metal layer is in a range from 1 μm to 10 μm.

4. The capacitor component of claim 2 , wherein a thickness of the ceramic layer is in a range from 3 μm to 15 μm.

5. The capacitor component of claim 1 , wherein a ratio of a minimum value of a thickness of each of the first and second connecting portions to a maximum value is 0.9 to 1.0.

6. The capacitor component of claim 2 , wherein the first and second connecting portions are formed by transcribing a ceramic layer having a sheet form and a metal layer having a sheet form in the second direction.

7. The capacitor component of claim 1 , wherein each of corners of the body has a rounded shape.

8. The capacitor component of claim 1 , wherein an average thickness of the first and second internal electrodes is in a range from 0.01 μm to 0.4 μm.

9. The capacitor component of claim 1 , wherein the layering portion includes a capacitance forming portion comprising the first and second internal electrodes opposing each other with the dielectric layer interposed therebetween, and upper and lower protective portions disposed in an upper portion and a lower portion of the capacitance forming portion.

10. The capacitor component of claim 9 , wherein R 1 /tp is in a range from 0.3 to 1.4, where tp is a thickness of each of the upper protective portion and the lower protective portion, and R 1 is a radius of curvature of each of the corners of the body on cross-sectional surfaces taken in the first and second directions.

11. The capacitor component of claim 10 , wherein the thickness tp is 20 μm or less.

12. The capacitor component of claim 1 , further comprising:
first and second margin portions disposed on a fifth surface and a sixth surface of the body, respectively, the fifth and sixth surfaces being opposite each other in a third direction perpendicular to the first and second directions.

13. The capacitor component of claim 12 , wherein R 2 /Wm is in a range from 0.3 to 1.4, wherein Wm is a thickness of each of the first and second margin portions, and R 2 a radius of curvature of each of the corners of the body on cross-sectional surfaces taken in the second and third directions.

14. The capacitor component of claim 1 ,
wherein the body includes first and second surfaces opposing each other in the first direction, third and fourth surfaces opposing each other in the second direction, and the fifth and sixth surfaces opposing each other in a third direction perpendicular to the first and second directions,
wherein the first and second external electrodes extend to the first surface, the second surface, the fifth surface, and the sixth surface, and
wherein the first and second connecting portions are connected to the first and second external electrodes.

15. The capacitor component of claim 1 , wherein a ratio a minimum value of the thickness tc to a maximum value is in a range from 0.8 to 1.0 where tc is a thickness of each of the first and second external electrodes.

16. A capacitor component, comprising:
a body including
a layering portion comprising first and second internal electrodes opposing each other and layered in a first direction with a dielectric layer interposed therebetween, and
first and second connecting portions disposed on opposing surfaces of the layering portion taken in a second direction perpendicular to the first direction and respectively connected to the first and second internal electrodes; and

first and second external electrodes disposed on the first and second connecting portions, respectively,
wherein the first and second connecting portions include a metal layer disposed on the layering portion and a ceramic layer disposed on the metal layer, and
wherein the first and second external electrodes include metal particles and glass, at least one of the metal particles having an entire surface thereof coated with at least one of graphene or carbon nanotubes.

Assignees

• Samsung Electro Mech

Inventors

• Lee Jong Ho
• Park Jung Tae
• Son Hee Ju
• Kim Min Woo

Classifications

• H01G4/1227

  based on alkaline earth titanates · CPC title

• H01G4/0085

  Fried electrodes · CPC title

• H01G4/012 Primary

  Form of non-self-supporting electrodes · CPC title

• H01G4/2325 Primary

  characterised by the material of the terminals · CPC title

• H01G4/248

  the terminals embracing or surrounding the capacitive element, e.g. caps (H01G4/252 takes precedence) · CPC title