Multilayer ceramic electronic component and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9875847-B2
Application number	US-201615003597-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Apr 23, 2015
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A multilayer ceramic electronic component includes a plurality of dielectric layers; and internal electrodes disposed on the dielectric layers and containing an additive. The additive contains lithium (Li) and a dielectric material.

First claim

What is claimed is:

1. A multilayer ceramic electronic component comprising:
a plurality of dielectric layers; and
internal electrodes disposed on the dielectric layers and containing an additive,
wherein the additive contains lithium (Li) and a dielectric material, and
a cross-sectional area occupied by the additive is 1% to 40% of a total cross-sectional area of the internal electrodes.

2. The multilayer ceramic electronic component of claim 1 , wherein the additive is a dielectric material coated with lithium (Li).

3. The multilayer ceramic electronic component of claim 1 , wherein the dielectric material is a barium titanate based material.

4. The multilayer ceramic electronic component of claim 1 , wherein the dielectric layers contain lithium (Li).

5. The multilayer ceramic electronic component of claim 4 , wherein a content of lithium (Li) in first regions adjacent to the internal electrodes in the dielectric layer is 1 to 3 times a content of lithium (Li) in a second region disposed between the first regions of the dielectric layer.

6. The multilayer ceramic electronic component of claim 1 , wherein an area intensity of lithium with respect to titanium is 0.030% to 20% when secondary ion mass spectrometry (SIMS) is performed on the additive trapped in the internal electrodes.

7. A multilayer ceramic electronic component comprising:
a plurality of dielectric layers; and
internal electrodes disposed on the dielectric layers and containing an additive,
wherein the additive contains lithium (Li) and a dielectric material,
the dielectric layers contain a barium titanate based dielectric material, and
in the dielectric layers, a molar concentration of lithium (Li) is 0.010% to 5% based on barium titanate.

8. The multilayer ceramic electronic component of claim 1 , wherein a size of the additive trapped in the internal electrodes is 1 nm to 200 nm.

9. A multilayer ceramic electronic component comprising:
a plurality of dielectric layers; and
internal electrodes disposed alternately with the dielectric layers and containing a lithium-containing additive,
wherein the dielectric layers have a concentration gradient of lithium (Li) in a thickness direction of a single dielectric layer, and
a cross-sectional area occupied by the additive is 1% to 40% of a total cross-sectional area of the internal electrodes.

10. The multilayer ceramic electronic component of claim 9 , wherein the dielectric layer includes first regions adjacent to the internal electrodes and a second region disposed between the first regions in a single dielectric layer, the first region having a lithium concentration higher than that of the second region.

11. The multilayer ceramic electronic component of claim 9 , wherein the additive is a barium titanate based dielectric material containing lithium (Li).

12. The multilayer ceramic electronic component of claim 9 , wherein the additive is a barium titanate based dielectric material coated with lithium (Li).

13. The multilayer ceramic electronic component of claim 9 , wherein an area intensity of lithium with respect to titanium is 0.030% to 20% when secondary ion mass spectrometry (SIMS) is performed on the additive trapped in the internal electrodes.

14. The multilayer ceramic electronic component of claim 9 , wherein the dielectric layers contain a barium titanate based dielectric material, and
in the dielectric layers, a molar concentration of lithium (Li) is 0.010% to 5% based on barium titanate.

Assignees

• Samsung Electro Mech

Inventors

• Sin Min Gi
• Park Kum Jin
• Yoo Jong Hoon
• Lee Chi Hwa
• Choi Chang Hak

Classifications

• H01G4/0085 Primary

  Fried electrodes · CPC title

• H01G4/30

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

• H01G4/12

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

• H01G4/1227

  based on alkaline earth titanates · CPC title