Multilayer ceramic electronic component

Patent metadata

Field	Value
Publication number	US-9412520-B2
Application number	US-201414529051-A
Country	US
Kind code	B2
Filing date	Oct 30, 2014
Priority date	Jul 25, 2014
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A multilayer ceramic electronic component may include: a ceramic body in which a plurality of internal electrodes and a plurality of dielectric layers are stacked in a thickness direction; and an external electrode including an electrode layer disposed on an outer surface of the ceramic body to be connected to the internal electrodes, a conductive resin layer disposed on the electrode layer and containing metal particles and a base resin, and a plating layer disposed on the conductive resin layer.

First claim

What is claimed is:

1. A multilayer ceramic electronic component comprising:
a ceramic body including a plurality of internal electrodes and a plurality of dielectric layers; and
an external electrode including an electrode layer disposed on an outer surface of the ceramic body to be connected to the internal electrodes, a conductive resin layer disposed on the electrode layer and containing a plurality of metal particles and a base resin, and a plating layer disposed on the conductive resin layer,
wherein in the case that a shortest distance from a point at which among the internal electrodes, an outermost internal electrode in the stacking direction and the electrode layer are connected to each other to an outer surface of the external electrode is defined as a, a virtual straight line forming the shortest distance is present, a distance of a region of the straight line passing through the conductive resin layer is defined as b, a distance of a region of the straight line passing through the electrode layer is defined as c, and a sum of distances of regions of the straight line passing through the metal particles contained in the conductive resin layer is defined as bm, 0.250≦{(2b+c)/a}×{1−(bm/b)} 1/2 ≦0.605 is satisfied.

2. The multilayer ceramic electronic component of claim 1 , wherein a corner portion of the conductive resin layer has a thickness of 1.7 μm or more.

3. The multilayer ceramic electronic component of claim 1 , wherein the internal electrodes include first and second internal electrodes having one ends alternately exposed to both end surfaces of the ceramic body opposing each other.

4. The multilayer ceramic electronic component of claim 1 , wherein the metal particles have a spherical or flake shape.

5. The multilayer ceramic electronic component of claim 1 , wherein the plating layer includes a first plating layer disposed on the conductive resin layer and containing nickel and a second plating layer disposed on the first plating layer and containing tin.

6. The multilayer ceramic electronic component of claim 1 , wherein the ceramic body includes an active layer in which the internal electrodes are alternately stacked with each of the dielectric layers interposed therebetween to thereby form capacitance, an upper cover part disposed on an upper portion of the active layer, and a lower cover part disposed on a lower portion of the active layer and having a thickness greater than that of the upper cover part.

7. A multilayer ceramic electronic component comprising:
a ceramic body including a plurality of internal electrodes and a plurality of dielectric layers; and
an external electrode including an electrode layer disposed on an outer surface of the ceramic body to be connected to the internal electrodes, a conductive resin layer disposed on the electrode layer and containing a plurality of metal particles and a base resin, and a plating layer disposed on the conductive resin layer,
wherein in the case that a point at which among the internal electrodes, an outermost internal electrode in the stacking direction and the electrode layer are connected to each other is defined as P, a shortest distance from the point P to an outer surface of the external electrode is defined as a, a point at which a virtual straight line forming the shortest distance contacts the outer surface of the electrode layer is defined as Q, a point at which the straight line contacts an outer surface of the conductive resin layer is defined as R, a distance between the points P and Q is defined as c, a distance between the points Q and R is defined as b, and a sum of distances of regions of the straight line crossing the metal particles is defined as bm, 0.250≦{(2b+c)/a}×{1−(bm/b)} 1/2 ≦0.605 is satisfied.

8. The multilayer ceramic electronic component of claim 7 , wherein a corner portion of the conductive resin layer has a thickness of 1.7 μm or more.

9. The multilayer ceramic electronic component of claim 7 , wherein the internal electrodes include first and second internal electrodes having one ends alternately exposed to both end surfaces of the ceramic body opposing each other.

10. The multilayer ceramic electronic component of claim 7 , wherein the metal particles have a spherical or flake shape.

11. The multilayer ceramic electronic component of claim 7 , wherein the plating layer includes a first plating layer disposed on the conductive resin layer and containing nickel and a second plating layer disposed on the first plating layer and containing tin.

12. The multilayer ceramic electronic component of claim 7 , wherein the ceramic body includes an active layer in which the internal electrodes are alternately stacked with each of the dielectric layers interposed therebetween to thereby form capacitance, an upper cover part disposed on an upper portion of the active layer, and a lower cover part disposed on a lower portion of the active layer and having a thickness greater than that of the upper cover part.

13. A multilayer ceramic electronic component comprising:
a ceramic body including an active layer including a plurality of internal electrodes disposed therein with each of the dielectric layers interposed therebetween to thereby form capacitance, an upper cover part disposed on an upper portion of the active layer, and a lower cover part disposed on a lower portion of the active layer and having a thickness greater than that of the upper cover part; and
an external electrode including an electrode layer disposed on an outer surface of the ceramic body to be connected to the internal electrodes, a conductive resin layer disposed on the electrode layer and containing a plurality of metal particles and a base resin, and a plating layer disposed on the conductive resin layer,
wherein in the case that a shortest distance from a point at which among the internal electrodes, an outermost internal electrode in the stacking direction and the electrode layer are connected to each other to an outer surface of the external electrode is defined as a, a virtual straight line forming the shortest distance is present, a distance of a region of the straight line passing through the conductive resin layer is defined as b, a distance of a region of the straight line passing through the electrode layer is defined as c, and a sum of distances of regions of the straight line passing through the metal particles contained in the conductive resin layer is defined as bm, 0.250≦{(2b+c)/a}×{1−(bm/b)} 1/2 ≦0.605 is satisfied.

Assignees

• Samsung Electro Mech

Inventors

• Ahn Young Ghyu
• Lee Byoung Hwa
• Park Sang Soo
• Park Heung Kil
• Lee Soon Ju

Classifications

• H01G4/30 Primary

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

• H01G4/012

  Form of non-self-supporting electrodes · CPC title

• H01G4/248

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

• H01G4/12

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

• H01G4/232

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