# US 2019/0244757 A1 · Capacitor component and method of manufacturing the same

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- Number: US 2019/0244757 A1
- Document ID: US20190244757A1
- Status: Published application
- Kind: A1
- Application number: 16/123,929
- Filed: 2018-09-06
- Published: 2019-08-08
- Earliest claimed: 2018-02-08
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Applicants: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Hyung Soon KWON; Hyoung Uk KIM; Tae Young HAM; Jong Han KIM; Ki Myoung YUN; Jae Sung PARK
- Web page: https://patentgrep.com/patent/US20190244757A1

## CPC

- H01G 4/1227: {based on alkaline earth titanates}
- B32B 18/00: Layered products essentially comprising ceramics, e.g. refractory products
- C01G 23/003: {Titanates (C01G23/001 takes precedence)}
- C04B 35/4682: {based on BaTiO3 perovskite phase}
- C04B 35/626: Preparing or treating the powders individually or as batches {(pigments for ceramics C09C1/0009); preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B}
- H01G 4/008: Selection of materials
- H01G 4/20: using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 (H01G4/12 takes precedence)
- H01G 4/30: Stacked capacitors (H01G4/33 takes precedence)
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C04B 2237/346: Titania or titanates
- C04B 2237/582: by joining layers or articles of the same composition but having different additives
- C04B 2237/704: of one or more of the ceramic layers or articles
- 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)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES

## Abstract

A capacitor component includes a body in which a dielectric layer and an internal electrode are alternately stacked, and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a composite layer including a dielectric material powder and a metallic particle and first and second protective layers including a dielectric material powder and spaced apart by the composite layer. A thickness of each of the first and second protective layers is equal to or greater than ⅓ of a thickness of the dielectric layer.

## Claims

### Claim 1

A capacitor component comprising:
a body in which a dielectric layer and an internal electrode are alternately stacked; and
an external electrode disposed on the body and connected to the internal electrode,
wherein the dielectric layer includes a composite layer including a first dielectric material and a metallic particle and first and second protective layers spaced apart by the composite layer and including a second dielectric material; and
wherein a thickness of each of the first and second protective layers is equal to or greater than ⅓ of a thickness of the dielectric layer.

### Claim 2 (depends on 1)

The capacitor component of claim 1, wherein a thickness of the composite layer is greater than or equal to 400 nm and is less than or equal to ⅓ of a thickness of the dielectric layer.

### Claim 3 (depends on 1)

The capacitor component of claim 1, wherein the metallic particle includes one or more of nickel (Ni), palladium (Pd), platinum (Pt), iridium (Ir), gold (Au), and selenium (Se).

### Claim 4 (depends on 1)

The capacitor component of claim 1, wherein the metallic particle has a size within a range from 5 to 600 nm.

### Claim 5 (depends on 1)

The capacitor component of claim 1, wherein the metallic particle is included within a range from 2 to 8 vol % of the composite layer, based on a total volume of the composite layer.

### Claim 6 (depends on 1)

The capacitor component of claim 1, wherein the first and second dielectric materials are the same material.

### Claim 7 (depends on 6)

The capacitor component of claim 6, wherein the first and second dielectric materials are barium titanate (BaTiO3).

### Claim 8 (depends on 1)

The capacitor component of claim 1, wherein the first and second protective layers do not include a metallic particle.

### Claim 9

A method of manufacturing a capacitor component, the method including:
preparing a protective layer paste including a first dielectric material powder;
preparing a composite layer paste including a second dielectric material powder and a metallic particle;
coating the protective layer paste on a support member to form a first protective layer, coating the composite layer paste on the first protective layer to form a composite layer and, then, coating the protective layer paste on the composite layer to form a second protective layer to produce a dielectric material sheet;
coating a conductive paste on the dielectric material sheet to print an internal electrode on the dielectric material sheet;
stacking and sintering the dielectric material sheet on which the internal electrode is printed to form a body; and
forming an external electrode connected to the internal electrode on the body,
wherein a thickness of each of the first and second protective layers is equal to or greater than ⅓ of a thickness of the dielectric material sheet.

### Claim 10 (depends on 9)

The method of claim 9, wherein the metallic particle includes one or more of nickel (Ni), palladium (Pd), platinum (Pt), iridium (Ir), gold (Au), and selenium (Se).

### Claim 11 (depends on 9)

The method of claim 9, wherein the first and second dielectric materials are the same material.

### Claim 12 (depends on 11)

The method of claim 11, wherein the first and second dielectric materials are barium titanate (BaTiO3).

### Claim 13 (depends on 9)

The method of claim 9, wherein a thickness of the composite layer is greater than or equal to 400 nm and is less than or equal to ⅓ of a thickness of the dielectric layer.