Multilayer electronic component

Patent metadata

Field	Value
Publication number	US-12224126-B2
Application number	US-202217961490-A
Country	US
Kind code	B2
Filing date	Oct 6, 2022
Priority date	Nov 24, 2021
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A multilayer electronic component includes a body including a dielectric layer and first and second internal electrodes alternately disposed with the dielectric layer interposed therebetween and including 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.

First claim

What is claimed is:

1. A multilayer electronic component comprising:
a body including a dielectric layer and first and second internal electrodes alternately disposed with the dielectric layer interposed therebetween and including 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;
a first external electrode disposed on the third surface of the body; and
a second external electrode disposed on the fourth surface of the body,
wherein one of the first and second external electrodes includes a first electrode layer disposed on one of the third and fourth surfaces and including a conductive material, a second electrode layer disposed on the first electrode layer and including Ni and glass, a third electrode layer disposed on the second electrode layer and including an Ni—Sn alloy, and a conductive resin layer disposed on the third electrode layer and including a conductive metal and a resin,
wherein E1>E2 in which E1 is a standard reduction potential of the first electrode layer and E2 is a standard reduction potential of the second electrode layer.

2. The multilayer electronic component of claim 1 , wherein the conductive material included in the first electrode layer includes one or more of Cu and a Cu—Ni alloy.

3. The multilayer electronic component of claim 1 , wherein the conductive material included in the first electrode layer includes one or more of Ag and an Ag—Ni alloy.

4. The multilayer electronic component of claim 1 , wherein the first electrode layer further includes glass.

5. The multilayer electronic component of claim 1 , wherein the Ni—Sn alloy includes Ni 3 Sn, Ni 3 Sn 2 , Ni 3 Sn 4 , or a mixture thereof.

6. The multilayer electronic component of claim 1 , wherein the conductive resin layer extends onto portions of the first and second surfaces of the body.

7. The multilayer electronic component of claim 1 , wherein the conductive metal includes Sn, and the resin includes an epoxy resin.

8. The multilayer electronic component of claim 7 , wherein the conductive metal further includes at least one of Ag, Cu, and Ni.

9. A multilayer electronic component comprising:
a body including a dielectric layer and first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween and including 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;
a first external electrode disposed on the third surface of the body; and
a second external electrode disposed on the fourth surface of the body,
wherein one of the first and second external electrodes includes:
a plurality of first electrode layers disposed on one of the third and fourth surfaces and spaced apart from each other in the first direction, being in contact with the first internal electrodes or the second internal electrodes, and including a conductive material,
a second electrode layer disposed on the plurality of first electrode layers and including Ni,
a third electrode layer disposed on the second electrode layer and including an Ni—Sn alloy; and
a conductive resin layer disposed on the third electrode layer and including a conductive metal and a resin,
wherein E1>E2 in which E1 is a standard reduction potential of the plurality of first electrode layers and E2 is a standard reduction potential of the second electrode layer.

10. The multilayer electronic component of claim 9 , wherein the conductive material included in the plurality of first electrode layers includes one or more of Cu and a Cu—Ni alloy.

11. The multilayer electronic component of claim 9 , wherein the conductive material included in the plurality of first electrode layers includes one or more of Ag and an Ag—Ni alloy.

12. The multilayer electronic component of claim 9 , wherein the plurality of first electrode layers further include glass.

13. The multilayer electronic component of claim 9 , wherein the Ni—Sn alloy includes Ni 3 Sn, Ni 3 Sn 2 , Ni 3 Sn 4 , or a mixture thereof.

14. The multilayer electronic component of claim 9 , wherein the conductive resin layers extend onto portions of the first and second surfaces of the body.

15. The multilayer electronic component of claim 9 , wherein the conductive metal includes Sn, and the resin includes an epoxy resin.

16. The multilayer electronic component of claim 15 , wherein the conductive metal further includes at least one of Ag, Cu, and Ni.

17. A multilayer electronic component comprising:
a body including a dielectric layer and first and second internal electrodes alternately disposed with the dielectric layer interposed therebetween and including 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;
a first external electrode disposed on the third surface of the body; and
a second external electrode disposed on the fourth surface of the body,
wherein one of the first and second external electrodes includes a first electrode layer disposed on one of the third and fourth surfaces and including a first conductive material and glass, a second electrode layer disposed on the first electrode layer and including a second conductive material and glass, and a conductive resin layer disposed on the second electrode layer and including a third conductive metal and a resin,
wherein E1>E2 in which E1 is a standard reduction potential of the first electrode layer and E2 is a standard reduction potential of the second electrode layer, and
the first electrode layer includes a plurality of patterns spaced apart from each other.

18. The multilayer electronic component of claim 17 , wherein the first conductive material includes one or more of Cu, a Cu—Ni alloy, Ag, and an Ag—Ni alloy.

19. The multilayer electronic component of claim 17 , wherein the second conductive material includes Ni, and the second electrode layer includes a sintered electrode.

20. The multilayer electronic component of claim 19 , wherein the third conductive metal includes Sn.

21. The multilayer electronic component of claim 20 , wherein the third conductive metal further includes at least one of Ag, Cu, and Ni.

Assignees

• Samsung Electro Mech

Inventors

• Choi Hyung Jong
• Lee Yoo Jeong
• Lee Chung Yeol
• Won Kwang Yeun
• An So Jung
• Sung Woo Kyung
• Park Myung Jun
• Lee Jong Ho

Classifications

• H01G4/30 Primary

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

• Y02E60/13

  Energy storage using capacitors · CPC title

• H01G4/012

  Form of non-self-supporting electrodes · CPC title

• H01G4/1209 Primary

  characterised by the ceramic dielectric material (H01G4/1272, H01G4/1281 take precedence) · CPC title

• H01G4/2325 Primary

  characterised by the material of the terminals · CPC title