Capacitor component

• US 10,643,793 B2
• Filed: 02/14/2019
• Issued: 05/05/2020
• Est. Priority Date: 09/06/2018
• Status: Active Grant

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Kwon, Hyung Soon, Cha, Kyoung Jin, Jo, Ji Hong
• Primary Examiner(s): Thomas, Eric W
• Application Number:
  US16/275,628
• Publication Number:
  US 20200082981A1
• Time in Patent Office: 446 Days
• CPC Class Codes: H01G 4/012 Form of non-self-supporting electrodes
• CPC Class Codes: H01G 4/12 Ceramic dielectrics H01G4/085 takes precedence
• CPC Class Codes: H01G 4/1227 based on alkaline earth titanates
• CPC Class Codes: H01G 4/224 Housing; Encapsulation
• CPC Class Codes: H01G 4/232 electrically connecting two or more layers of a stacked or rolled capacitor
• CPC Class Codes: H01G 4/30 Stacked capacitors H01G4/33 takes precedence

Abstract

A capacitor component includes a capacitor component includes a body including a dielectric layer and first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween, and first and second external electrodes disposed on the body and electrically connected to the first and second internal electrodes. The body may include a capacitance forming portion including the first and second internal electrodes, cover portions disposed on upper and lower surfaces of the capacitance forming portion, and margin portions disposed on side surfaces of the capacitance forming portion, in which the margin portions have a hardness ranging from 8.5 GPa to 14 GPa.

Claims

1. A capacitor component, comprising:

a body including a dielectric layer and first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween; and

first and second external electrodes disposed on the body and electrically connected to the first and second internal electrodes,

wherein the body comprises a capacitance forming portion including the first and second internal electrodes, cover portions disposed on upper and lower surfaces of the capacitance forming portion, and margin portions disposed on side surfaces of the capacitance forming portion, the margin portions having a hardness ranging from 8.5 GPa to 14 GPa,

the margin portions include first areas adjacent to the first and second internal electrodes and second areas adjacent to an external surface of the body, and

a hardness of the first areas is greater than a hardness of the second areas.

2. The capacitor component of claim 1, wherein the margin portions have a hardness greater than a hardness of a dielectric layer of the capacitance forming portion.

3. The capacitor component of claim 1, wherein the margin potions have a thickness of 20 μ

m or less.

4. The capacitor component of claim 1, wherein the dielectric layer has a thickness of 0.4 μ

m or less, and the first and second internal electrodes each have a thickness of 0.4 μ

m or less.

5. The capacitor component of claim 1, wherein the cover portions have a thickness of 20 μ

m or less.

6. The capacitor component of claim 1, wherein the body has first and second surfaces opposing each other, third and fourth surfaces opposing each other and connected to the first and second surfaces, and fifth and sixth surfaces opposing each other and connected to the first to fourth surfaces.

7. The capacitor component of claim 6, wherein a distance between the third and fourth surfaces of the body is 0.4 mm or less, and a distance between the fifth and sixth surfaces of the body is 0.2 mm or less.

8. A capacitor component, comprising:

a body including a dielectric layer and first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween; and

first and second external electrodes disposed on the body and electrically connected to the first and second internal electrodes,

wherein the body comprises a capacitance forming portion including the first and second internal electrodes, cover portions disposed on upper and lower surfaces of the capacitance forming portion, and margin portions disposed on side surfaces of the capacitance forming portion, the margin portions including first areas adjacent to the first and second internal electrodes and second areas adjacent to an external surface of the body, the first areas having a hardness ranging from 8.5 GPa to 14 GPa, and

a hardness of the first areas is greater than a hardness of the second areas.

9. The capacitor component of claim 8, wherein the first areas have a hardness greater than a hardness of a dielectric layer of the capacitance forming portion.

10. The capacitor component of claim 8, wherein the first areas have a thickness of 20 μ

m or less.

11. The capacitor component of claim 8, wherein dielectric layer has a thickness of 0.4 μ

m or less, and the first and second internal electrodes each have a thickness of 0.4 μ

m or less.

12. The capacitor component of claim 8, wherein the cover portions have a thickness of 20 μ

m or less.

13. The capacitor component of claim 8, wherein the body has first and second surfaces opposing each other, third and fourth surfaces opposing each other and connected to the first and second surfaces, and fifth and sixth surfaces opposing each other and connected to the first to fourth surfaces.

14. The capacitor component of claim 13, wherein a distance between the third and fourth surfaces of the body is 0.4 mm or less, and a distance between the fifth and sixth surfaces of the body is 0.2 mm or less.

15. A capacitor component, comprising:

a body including a dielectric layer and first and second internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween; and

first and second external electrodes disposed on the body and electrically connected to the first and second internal electrodes,

wherein the body comprises a capacitance forming portion including the first and second internal electrodes, cover portions disposed on upper and lower surfaces of the capacitance forming portion, and margin portions disposed on side surfaces of the capacitance forming portion, the cover portions having a hardness ranging from 8.5 GPa to 14 GPa,

the margin portions include first areas adjacent to the first and second internal electrodes and second areas adjacent to an external surface of the body, and

a hardness of the first areas is greater than a hardness of the second areas.

16. The capacitor component of claim 15, the margin portions have a hardness ranging from 8.5 GPa to 14 GPa.

17. The capacitor component of claim 15, wherein the margin portions have a hardness greater than a hardness of a dielectric layer of the capacitance forming portion.

18. The capacitor component of claim 15, wherein the margin potions have a thickness of 20 μ

m or less, and

the cover portions have a thickness of 20 μ

m or less.

19. The capacitor component of claim 15, wherein the dielectric layer has a thickness of 0.4 μ

m or less, and the first and second internal electrodes each have a thickness of 0.4 μ

m or less.