# US 11,309,131 B2 · Multilayer ceramic capacitor

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- Number: US 11,309,131 B2
- Document ID: US11309131B2
- Status: Granted
- Kind: B2
- Application number: 16/855,272
- Filed: 2020-04-22
- Published: 2021-01-07
- Granted: 2022-04-19
- Earliest claimed: 2019-07-05
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Applicants: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Taek Jung Lee; Min Gon Lee; Jea Yeol Choi; Jin Man Jung; Jin Kyung Joo
- Web page: https://patentgrep.com/patent/US11309131B2

## CPC

- H01G 4/30: Stacked capacitors (H01G4/33 takes precedence)
- H01G 2/02: Mountings
- H01G 4/008: Selection of materials
- H01G 4/012: Form of non-self-supporting electrodes
- H01G 4/1218: {based on titanium oxides or titanates (H01G4/1245 takes precedence)}
- H01G 4/232: electrically connecting two or more layers of a stacked or rolled capacitor
- H01G 4/252: the terminals being coated on the capacitive element (H01G4/232 takes precedence)
- H01G 4/385: {Single unit multiple capacitors, e.g. dual capacitor in one coil}
- H01G 4/2325: {characterised by the material of the terminals}
- H01G 4/236: leading through the housing, i.e. lead-through
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)

## Abstract

A multilayer ceramic capacitor includes a body including a dielectric layer and first and second internal electrodes disposed with the dielectric layer interposed therebetween and disposed in point-symmetry with each other; first and second connection electrodes penetrating the body in a direction perpendicular to the dielectric layer and connected to the first internal electrode; third and fourth connection electrodes penetrating the body in a direction perpendicular to the dielectric layer and connected to the second internal electrode; first and second external electrodes disposed on both surfaces of the body and connected to the first and second connection electrodes; and third and fourth external electrodes spaced apart from the first and second external electrodes and connected to the third and fourth connection electrodes, and the first and second internal electrodes include a region in which an electrode is not disposed.

## Claims

### Claim 1

A multilayer ceramic capacitor, comprising:
a body including a dielectric layer and first and second internal electrodes disposed with, and directly contacting, the dielectric layer interposed therebetween in a stacking direction and disposed in point-symmetry with each other;
first and second connection electrodes penetrating the body in the stacking direction and connected to the first internal electrode;
third and fourth connection electrodes penetrating the body in the stacking direction and connected to the second internal electrode;
first and second external electrodes disposed on both surfaces of the body opposing each other in the stacking direction and connected to the first and second connection electrodes; and
third and fourth external electrodes spaced apart from the first and second external electrodes and connected to the third and fourth connection electrodes,
wherein at least one of the first, second, third or fourth external electrodes has a length in a direction perpendicular to the stacking direction which is greater than a maximum length of at least one of the first or second internal electrodes in the direction perpendicular to the stacking direction, and
wherein at least one of the first or second internal electrode is entirely spaced apart from an outer edge of the dielectric layer.

### Claim 2 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein each of the first and second internal electrodes has a T-shaped form.

### Claim 3 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein the first and second internal electrodes include nickel.

### Claim 4 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein the first to fourth external electrodes are sintered electrodes including nickel.

### Claim 5 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein each of the first to fourth external electrodes has an arithmetical average roughness (Ra) of 1 nm to 100 nm.

### Claim 6 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein the first to fourth external electrodes include a first plating layer and a second plating layer layered in order on a sintered electrode.

### Claim 7 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein a thickness each of the first to fourth external electrodes is within a range of 1 μm to 10 μm.

### Claim 8 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein a thickness of the body is 100 μm or less.

### Claim 9 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein the first and second internal electrodes include a cut-out region.

### Claim 10 (depends on 1)

The multilayer ceramic capacitor of claim 1, wherein the first and second internal electrodes include a region in which an electrode is not disposed.

### Claim 11 (depends on 10)

The multilayer ceramic capacitor of claim 10, wherein the region in which an electrode is not disposed in each of the first and second internal electrodes has a rectangular shape.

### Claim 12 (depends on 10)

The multilayer ceramic capacitor of claim 10, wherein the region in which an electrode is not disposed in each of the first and second internal electrodes has a round shape.

### Claim 13 (depends on 10)

The multilayer ceramic capacitor of claim 10,
wherein the first and second connection electrodes penetrate the region in which an electrode is not disposed in the second internal electrode, and
wherein the third and fourth connection electrodes penetrate the region in which an electrode is not disposed in the first internal electrode.

### Claim 14

A multilayer ceramic capacitor, comprising:
a body including a first internal electrode, a second internal electrode and a dielectric layer interposed between the first and second internal electrodes in a stacking direction, the body extending in length and width directions perpendicular to the stacking direction, the first internal electrode and the second internal electrode being disposed in a point symmetry with each other;
first and second connection electrodes disposed perpendicular to the dielectric layer and exposed through first and second surfaces of the body, connected to the first internal electrode and spaced apart from a portion of the second internal electrode;
third and fourth connection electrodes disposed perpendicular to the dielectric layer and exposed through first and second surfaces of the body, connected to the second internal electrode and spaced apart from a portion of the first internal electrode and the first and second connection electrodes;
first and second external electrodes disposed on the first and second surfaces of the body and connected to the first and second connection electrodes in the length direction; and
third and fourth external electrodes disposed on the first and second surfaces of the body, spaced apart from the first and second external electrodes and connected to the third and fourth connection electrodes in the length direction,
wherein at least one of the first, second, third or fourth external electrodes has a length in a direction perpendicular to the stacking direction which is greater than a maximum length of at least one of the first or second internal electrodes in the direction perpendicular to the stacking direction.

### Claim 15 (depends on 14)

The multilayer ceramic capacitor of claim 14, wherein the first and second internal electrodes comprise a conductive material disposed on the dielectric layer.

### Claim 16 (depends on 15)

The multilayer ceramic capacitor of claim 15, wherein the portion of the first internal electrode spaced apart from the third and fourth connection electrodes and the portion of the second internal electrode spaced apart from the first and second connection electrodes comprises a portion where the conductive material is absent.

### Claim 17 (depends on 16)

The multilayer ceramic capacitor of claim 16, wherein each of the portion of the first internal electrode spaced apart from the third and fourth connection electrodes and the portion of the second internal electrode spaced apart from the first and second connection electrodes have a shape selected from a quadrangle, a polygon, a circle, an ellipse, or a combination thereof.

### Claim 18 (depends on 14)

The multilayer ceramic capacitor of claim 14, wherein each of the first, second, third and fourth external electrodes has an arithmetical average roughness (Ra) of 1 nm to 100 nm.

### Claim 19 (depends on 14)

The multilayer ceramic capacitor of claim 14, wherein each of the first, second, third and fourth connection electrodes comprises a via penetrating through the body, the via being filled with a conductive material.

### Claim 20 (depends on 14)

The multilayer ceramic capacitor of claim 14, further comprising an identifier layer is disposed on one or both of the first and second surfaces of the body.