Multilayer ceramic electronic component

Patent metadata

Field	Value
Publication number	US-9881741-B2
Application number	US-201514944656-A
Country	US
Kind code	B2
Filing date	Nov 18, 2015
Priority date	Dec 11, 2014
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A multilayer ceramic capacitor includes a ceramic base body and is structured such that fluorine is present between the ceramic base body and a sintered metal layer or between a sintered metal layer and a conductive resin layer.

First claim

What is claimed is:

1. A multilayer ceramic electronic component comprising:
a ceramic base body that includes inner electrodes buried therein and first and second main surfaces opposite each other, first and second side surfaces opposite each other, and first and second end surfaces opposite each other, each of the first and second side surfaces being adjacent to the first and second main surfaces, and each of the first and second end surfaces being adjacent to the first and second main surfaces and the first and second side surfaces;
outer electrodes which are disposed on the respective first and second end surfaces of the ceramic base body so as to be electrically connected to the inner electrodes and each of which includes an edge portion disposed on the first and second main surfaces and the first and second side surfaces, each of the outer electrodes including a sintered metal layer disposed on the ceramic base body, a conductive resin layer disposed on the sintered metal layer, and a plating layer disposed on the conductive resin layer; and
fluorine which is present between the conductive resin layer and each of the first and second main surfaces of the ceramic base body; wherein
the fluorine is a plasma polymerization coating; and
the fluorine is present only between the conductive resin layer and the first and second main surfaces of the ceramic base body, or between the conductive resin layer and the first and second main surfaces of the ceramic base body and only in a portion of a region between the conductive resin layer and the first and second end surfaces of the ceramic base body.

2. The multilayer ceramic electronic component according to claim 1 , wherein the fluorine is present at the edge portion of each of the outer electrodes.

3. The multilayer ceramic electronic component according to claim 1 , wherein the fluorine is present between the sintered metal layer and the conductive resin layer.

4. The multilayer ceramic electronic component according to claim 1 , wherein the fluorine is present between the ceramic base body and the sintered metal layer.

5. The multilayer ceramic electronic component according to claim 1 , wherein the multilayer ceramic electronic component is one of a multilayer ceramic capacitor, a multilayer ceramic inductor, a multilayer ceramic thermistor, and a multilayer ceramic piezoelectric component.

6. The multilayer ceramic electronic component according to claim 1 , wherein the fluorine contains a fluorocopolymer.

7. The multilayer ceramic electronic component according to claim 1 , wherein the conductive resin layer includes metal particles.

8. The multilayer ceramic electronic component according to claim 1 , wherein the sintered metal layer includes copper.

9. The multilayer ceramic electronic component according to claim 1 , wherein the plating layer includes nickel.

10. A multilayer ceramic electronic component comprising:
a ceramic base body that includes inner electrodes buried therein and first and second main surfaces opposite each other, first and second side surfaces opposite each other, and first and second end surfaces opposite each other, each of the first and second side surfaces being adjacent to the first and second main surfaces, and each of the first and second end surfaces being adjacent to the first and second main surfaces and the first and second side surfaces;
outer electrodes which are disposed on the respective first and second end surfaces of the ceramic base body so as to be electrically connected to the inner electrodes and each of which includes an edge portion disposed on the first and second main surfaces and the first and second side surfaces, each of the outer electrodes including a sintered metal layer disposed on the ceramic base body, a conductive resin layer disposed on the sintered metal layer, and a plating layer disposed on the conductive resin layer; and
fluorine which is detectable by TOF-SIMS and which is present between the conductive resin layer and each of the first and second main surfaces of the ceramic base body; wherein
the fluorine is a plasma polymerization coating; and
the fluorine is present only between the conductive resin layer and the first and second main surfaces of the ceramic base body, or between the conductive resin layer and the first and second main surfaces of the ceramic base body and only in a portion of a region between the conductive resin layer and the first and second end surfaces of the ceramic base body.

11. The multilayer ceramic electronic component according to claim 10 , wherein the fluorine is present at the edge portion of each of the outer electrodes.

12. The multilayer ceramic electronic component according to claim 10 , wherein the fluorine is present between the sintered metal layer and the conductive resin layer.

13. The multilayer ceramic electronic component according to claim 10 , wherein the fluorine is present between the ceramic base body and the sintered metal layer.

14. The multilayer ceramic electronic component according to claim 10 , wherein the multilayer ceramic electronic component is one of a multilayer ceramic capacitor, a multilayer ceramic inductor, a multilayer ceramic thermistor, and a multilayer ceramic piezoelectric component.

15. The multilayer ceramic electronic component according to claim 10 , wherein the fluorine contains a fluorocopolymer.

16. The multilayer ceramic electronic component according to claim 10 , wherein the conductive resin layer includes metal particles.

17. The multilayer ceramic electronic component according to claim 10 , wherein the sintered metal layer includes copper.

18. The multilayer ceramic electronic component according to claim 10 , wherein the plating layer includes nickel.

Assignees

• Murata Manufacturing Co

Inventors

• Otani Shinji

Classifications

• H01F17/0013

  with stacked layers · CPC title

• H01G4/12

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

• H01L41/0472

  Electricity · mapped topic

• H01G4/2325

  characterised by the material of the terminals · CPC title

• H01F27/292

  Surface mounted devices · CPC title