Electronic component having plurality of internal electrodes

Patent metadata

Field	Value
Publication number	US-11437189-B2
Application number	US-202117160531-A
Country	US
Kind code	B2
Filing date	Jan 28, 2021
Priority date	Feb 13, 2020
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A multilayer capacitor 1 includes an element body, an external electrode, and a plurality of internal electrodes. The plurality of internal electrodes include electrode portions disposed to face other internal electrodes and connecting portions connecting the electrode portions to the external electrode. The connecting portions of the internal electrodes are positioned in a region corresponding to an end surface when viewed from a direction perpendicular to the end surface. The electrode portions of the internal electrodes have portions overlapping a region corresponding to an edge line surfaces when viewed from the direction perpendicular to the end surface.

First claim

What is claimed is:

1. An electronic component comprising:
an element body including a pair of end surfaces facing each other and four side surfaces connecting the pair of end surfaces;
an external electrode disposed on the side surfaces and each of the end surfaces; and
a plurality of internal electrodes disposed in the element body, the internal electrodes being laminated between two end portions along a lamination direction, wherein
the element body includes a first edge line surface which is provided between one or more of the end surfaces and each of the side surfaces and which is curved, and a second edge line surface which is provided between two adjacent side surfaces and which is curved,
each of the external electrodes includes an electrode layer provided across the respective end surface and a part of one or more of the side surfaces and a plated layer covering the electrode layer,
the plurality of internal electrodes each include an electrode portion disposed to face other internal electrodes and a connecting portion connecting the electrode portion and the respective external electrode,
the connecting portions of the internal electrodes are positioned in a region corresponding to the respective end surface when viewed from a direction perpendicular to the respective end surface,
the internal electrodes include first internal electrodes at the two end portions along the lamination direction and second internal electrodes at central portions between the two end portions along the lamination direction,
the electrode portions of the first internal electrodes have portions overlapping a region corresponding to the first edge line surface when viewed from the direction perpendicular to the respective end surface, and
the electrode portions of the second internal electrodes have no portions overlapping the region corresponding to the first edge line surface when viewed from the direction perpendicular to the respective end surface.

2. The electronic component according to claim 1 , wherein a radius of curvature of a corner portion of the element body is larger than a radius of curvature of the second edge line surface.

3. The electronic component according to claim 1 , wherein all the connecting portions of the plurality of internal electrodes are positioned in the region corresponding to the respective end surface when viewed from the direction perpendicular to the respective end surface.

4. The electronic component according to claim 1 , wherein a width of the connecting portions is smaller than a width of the electrode portions.

Assignees

• Tdk Corp

Inventors

• Yoshida Daisuke
• Hirabayashi Hikaru
• Takahashi Yuki
• Okamoto Takuto
• Kimura Masato

Classifications

• H01G4/232

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

• H01G4/008

  Selection of materials · CPC title

• H01G4/012 Primary

  Form of non-self-supporting electrodes · CPC title

• H01G4/30 Primary

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

• H01G4/1218

  based on titanium oxides or titanates (H01G4/1245 takes precedence) · CPC title