Multi-layered ceramic electronic component

Patent metadata

Field	Value
Publication number	US-11222748-B2
Application number	US-201916537841-A
Country	US
Kind code	B2
Filing date	Aug 12, 2019
Priority date	Oct 5, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A multilayer ceramic electronic component includes a ceramic body including a dielectric layer and a plurality of internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween; and an external electrode, wherein the ceramic body comprises an active portion including a plurality of internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween to form capacitance and a cover portion formed in upper and lower portions of the active portion, wherein a plurality of internal electrodes in the upper region and the lower region of the active portion is disposed inwardly of an outer side surface of the ceramic body to be spaced apart by a predetermined distance from the body portion, and the plurality of internal electrodes in the central region of the active portion and the internal electrodes having the same polarities are connected to each other via vias.

First claim

What is claimed is:

1. A multi-layered ceramic electronic component, comprising:
a ceramic body including a dielectric layer and a plurality of internal electrodes including first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween, and having first and second surfaces opposing each other in a first direction, third and fourth surfaces connected to the first and second surfaces and opposing each other in a second direction, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other in a third direction; and
an external electrode including first and second external electrodes and disposed outside of the ceramic body, wherein
the first external electrode covers an entire surface of a one surface of the ceramic body,
the second external electrode covers an entire surface of an other surface opposing the one surface of the ceramic body, and
the first and second external electrodes are electrically connected to the first and second internal electrodes, respectively,

wherein the first internal electrode is exposed to the one surface of the ceramic body and not exposed to the other surface opposing the one surface of the ceramic body,
wherein the second internal electrode is exposed to the other surface opposing the one surface of the ceramic body and is not exposed to the one surface of the ceramic body,
wherein the first and second internal electrodes are exposed to the opposing surfaces alternately,
wherein the ceramic body comprises an active portion including the plurality of internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween to form capacitance and a cover portion formed in upper and lower portions of the active portion,
wherein the active portion is composed of a central region and upper and lower regions disposed in upper and lower portions of the central region,
wherein a plurality of internal electrodes in the central region of the active portion each comprise a body portion contributing to form capacitance and a lead portion having a width narrower than a width of the body portion, one end of the lead portion being exposed to the third surface or the fourth surface of the ceramic body,
wherein a plurality of internal electrodes in the upper region and the lower region of the active portion is disposed inwardly of an outer side surface of the ceramic body to be spaced apart by a predetermined distance from the third and fourth surfaces of the ceramic body, and the plurality of internal electrodes in the central region of the active portion and the internal electrodes in the upper region and the lower region of the active portion having a same polarity are connected to each other via vias, and
wherein at least two adjacent internal electrodes of the plurality of internal electrodes include an overlapping region in a stacking direction of the plurality of internal electrodes and the vias are arranged outside of the overlapping region in a direction perpendicular to the stacking direction.

2. The multi-layered ceramic electronic component of claim 1 , wherein a first internal electrode in the central region of the active portion has a lead portion exposed to the third surface of the ceramic body, and a second internal electrode in the central region of the active portion has a lead portion exposed to the fourth surface of the ceramic body.

3. The multi-layered ceramic electronic component of claim 2 , wherein a first internal electrode in each of the upper region and the lower region of the active portion is connected to the first internal electrode in the central region of the active portion via a first via of the vias, and
a second internal electrode in each of the upper region and the lower region of the active portion is connected to the second internal electrode in the central region of the active portion via a second via of the vias.

4. The multi-layered ceramic electronic component of claim 2 , wherein the external electrode includes first and second external electrodes electrically connected to the first and second internal electrodes, respectively.

5. The multi-layered ceramic electronic component of claim 4 , wherein the first and second external electrodes include first and second electrode layers electrically connected to the first and second internal electrodes, respectively, and first and second conductive resin layers disposed on the electrode layers, respectively.

6. The multi-layered ceramic electronic component of claim 5 , wherein the first and second conductive resin layers include an epoxy resin and a conductive metal powder.

7. The multi-layered ceramic electronic component of claim 6 , wherein the conductive metal powder comprises one or more selected from a group consisting of copper (Cu), silver (Ag), nickel (Ni), and alloys thereof.

8. The multi-layered ceramic electronic component of claim 5 , wherein the first and second electrode layers include: one or more conductive metals selected from a group consisting of copper (Cu), silver (Ag), nickel (Ni), and alloys thereof; and glass.

9. The multi-layered ceramic electronic component of claim 5 , further comprising a plating layer respectively disposed on the first and second conductive resin layers.

10. The multi-layered ceramic electronic component of claim 9 , wherein the plating layer comprises a nickel (Ni) plating layer and a tin (Sn) plating layer.

11. The multi-layered ceramic electronic component of claim 1 , wherein widths of the plurality of internal electrodes in the upper region and the lower region of the active portion are smaller than the widths of the body portion of the plurality of internal electrodes in the central region of the active portion.

12. The multi-layered ceramic electronic component of claim 1 , wherein a thickness (Te) of the first and second internal electrodes is less than 1 μm.

13. The multi-layered ceramic electronic component of claim 1 , wherein a thickness (Td) of the dielectric layer is less than 2.8 μm.

14. The multi-layered ceramic electronic component of claim 1 , wherein a thickness (Td) of the dielectric layer and a thickness (Te) of the first and second internal electrodes satisfy Td>2×Te.

15. The multi-layered ceramic electronic component of claim 1 , wherein the vias are filled with a conductive material.

16. The multi-layered ceramic electronic component of claim 15 , wherein the conductive material comprises one or more selected from a group consisting of copper (Cu), silver (Ag), nickel (Ni), and alloys thereof.

17. The multi-layered ceramic electronic component of claim 1 , wherein the first and second internal electrodes comprise one or more selected from a group consisting of silver (Ag), lead (Pb), platinum, (Pt), nickel (Ni) and copper (Cu).

Assignees

• Samsung Electro Mech

Inventors

• Jeong Gi Seok
• Lee Sun Cheol
• Jun Ho In

Classifications

• H01G4/30 Primary

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

• H01G4/2325

  characterised by the material of the terminals · CPC title

• H01G4/1227

  based on alkaline earth titanates · CPC title

• H01G4/012 Primary

  Form of non-self-supporting electrodes · CPC title

• H01G4/232 Primary

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