# US 10,872,728 B2 · Multilayer ceramic electronic component and method of manufacturing the same

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- Number: US 10,872,728 B2
- Document ID: US10872728B2
- Status: Granted
- Kind: B2
- Application number: 16/161,398
- Filed: 2018-10-16
- Published: 2019-11-28
- Granted: 2020-12-22
- Earliest claimed: 2018-05-28
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Applicants: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Sun Ho Yoon; Jeong Ryeol Kim; Seong Han Park; Kyoung Ki Min; Young Kyu Park; Jong Han Kim
- Web page: https://patentgrep.com/patent/US10872728B2

## CPC

- H01G 4/30: Stacked capacitors (H01G4/33 takes precedence)
- H01G 4/008: Selection of materials
- H01G 4/0085: {Fried electrodes}
- H01G 4/012: Form of non-self-supporting electrodes
- H01G 4/1227: {based on alkaline earth titanates}
- 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 electronic component includes a ceramic body including a dielectric layer and first and second internal electrodes which face each other with the dielectric layer interposed therebetween. The first and second internal electrodes include a conductive metal and an additive. In a cross-section of the ceramic body in the length-thickness (L-T) plane, a ratio of content of the additive in the first and second internal electrodes in upper and lower portions of the ceramic body to a content of the additive in the first and second internal electrodes in a central portion of the ceramic body is around 0.63 to around 1.03.

## Claims

### Claim 1

A multilayer ceramic electronic component comprising:
a ceramic body including a dielectric layer and first and second internal electrodes which face each other with the dielectric layer interposed therebetween, the first and second internal electrodes including a conductive metal and an additive,
wherein, in a cross-section of the ceramic body in the length-thickness plane, an amount of the additive in the first and second internal electrodes in upper and lower portions of the ceramic body is different than an amount of the additive in the first and second internal electrodes in a central portion of the ceramic body.

### Claim 2 (depends on 1)

The multilayer ceramic electronic component of claim 1, wherein a ratio of a content of the additive in the first and second internal electrodes to a content of the conductive metal is 0.5% or higher.

### Claim 3 (depends on 2)

The multilayer ceramic electronic component of claim 2, wherein the ratio of the content of the additive in the first and second internal electrodes to the content of the conductive metal is around 0.5% to around 3.0%.

### Claim 4 (depends on 1)

The multilayer ceramic electronic component of claim 1, wherein the first and second internal electrodes disposed in the central portion of the ceramic body occupy an area around 40% to 60% of area occupied by all the first and second internal electrodes in the ceramic body.

### Claim 5 (depends on 1)

The multilayer ceramic electronic component of claim 1, wherein the first and second internal electrodes disposed in the upper and lower portions of the ceramic body occupy an area around 10% or less than an area occupied by all the first and second internal electrodes from an uppermost internal electrode to a lowermost internal electrode.

### Claim 6 (depends on 1)

The multilayer ceramic electronic component of claim 1, wherein a thickness Te of each of the first and second internal electrodes satisfies the equation 0.1 μm ≤Te≤0.5 μm.

### Claim 7 (depends on 1)

The multilayer ceramic electronic component of claim 1, wherein the additive comprises a ceramic material.

### Claim 8 (depends on 1)

The multilayer ceramic electronic component of claim 1, wherein, in the cross-section of the ceramic body in the length-thickness plane, a ratio of a content of the additive in the first and second internal electrodes in the upper and lower portions of the ceramic body to a content of the additive in the first and second internal electrodes in the central portion of the ceramic body is around 0.63 to around 1.03.

### Claim 9

A method of manufacturing a multilayer ceramic electronic component, comprising:
forming a ceramic green sheet;
forming, on the ceramic green sheet, an internal electrode pattern using a conductive paste, the conductive paste including a conductive metal, an additive, and sulfur (S) of 500 ppm or less;
forming a ceramic laminate by layering a plurality of ceramic green sheets, each including the internal electrode pattern; and
forming a ceramic body including a plurality of dielectric layers and a plurality of internal electrodes by sintering the ceramic laminate,
wherein, in a cross-section of the ceramic body taken in a length-thickness plane, an amount of the additive in internal electrodes of the plurality of internal electrodes in upper and lower portions of the ceramic body is different than an amount of the additive in internal electrodes in a central portion of the ceramic body.

### Claim 10 (depends on 9)

The method of claim 9, wherein a ratio of a content of the additive in the internal electrodes to a content of the conductive metal is around 0.5% or higher.

### Claim 11 (depends on 10)

The method of claim 10, wherein the ratio of the content of the additive in the internal electrodes to the content of the conductive metal is around 0.5% to around 3.0%.

### Claim 12 (depends on 9)

The method of claim 9, wherein the internal electrodes in the central portion of the ceramic body occupies an area of around 40% to around 60% of the entire area occupied by the plurality of internal electrodes.

### Claim 13 (depends on 9)

The method of claim 9, wherein the internal electrodes in the upper and lower portions of the ceramic body occupy an area of around 10% or less of the entire area occupied by the plurality of internal electrodes from an uppermost internal electrode to a lowermost internal electrode.

### Claim 14 (depends on 9)

The method of claim 9, wherein a thickness Te of each of the internal electrodes satisfies the equation 0.1 μm ≤Te≤0.5 μm.

### Claim 15 (depends on 9)

The method of claim 9, wherein the additive comprises a ceramic material.

### Claim 16 (depends on 9)

The method of claim 9, wherein, in the cross-section of the ceramic body taken in the length-thickness plane, a ratio of a content of the additive in the internal electrodes of the plurality of internal electrodes in the upper and lower portions of the ceramic body to a content of the additive in the internal electrodes in the central portion of the ceramic body is around 0.63 to around 1.03.