IP Library › Granted Patent US 10,559,423
Granted Patent B2
US 10,559,423 · App. 15/854,321 · Granted Feb 11, 2020

Multilayer ceramic electronic device

Inventors: Nobuyuki Koide (Tokyo, JP); Toshihiko Kaneko (Tokyo, JP); Yasushi Tanaka (Tokyo, JP)
Assignee: TDK CORPORATION
H01G4/1227B32B18/00C04B35/4682C04B35/6264C04B35/638C04B35/64H01G4/30B32B38/145B32B2315/02C04B2235/3236C04B2235/5445C04B2235/6025C04B2235/6562C04B2235/6567C04B2235/6588C04B2235/663C04B2235/79C04B2235/9638C04B2237/346C04B2237/704
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Quick Facts
Patent No.
US 10,559,423
App. No.
15/854,321
Granted
Feb 11, 2020
Kind
B2
Abstract

A multilayer ceramic electronic device includes a laminated body having alternately laminated internal electrode layers and dielectric layers. The dielectric layer has a thickness of 0.5 μm or less. The internal electrode layers contain ceramic particles. A content ratio of the ceramic particles contained in the internal electrode layer is 2 to 15% by representation of cross sectional area.

Claims (17)

1. A multilayer ceramic electronic device comprising a laminated body having alternately laminated internal electrode layers and dielectric layers, wherein

each of the dielectric layers has a thickness of 0.5 μm or less,

each of the internal electrode layers contains ceramic particles,

a content ratio of the ceramic particles contained in the each of the internal electrode layers is 3 to 10% by representation of cross sectional area, and

the each of the dielectric layers has a thickness standard deviation (σ) of 100 nm or less.

2. The multilayer ceramic electronic device according to claim 1 , wherein

the each of the internal electrode layers has a thickness of 0.6 μm or less.

3. The multilayer ceramic electronic device according to claim 1 , wherein the each of the internal electrode layers contains a main component of Ni.

4. The multilayer ceramic electronic device according to claim 1 , wherein

the ceramic particles contain at least one of BaTiO 3 , ZrO 2 , R 2 O 3 (R is at least one of Y, Dy, Ho, and Er), and an oxide of an alkali earth metal (at least one of Mg, Ca, Ba, and Sr).

5. The multilayer ceramic electronic device according to claim 1 , wherein the each of the internal electrode layers has a coverage factor of 70% or more.

6. The multilayer ceramic electronic device according to claim 1 , wherein the content ratio of the ceramic particles contained in the each of the internal electrode layers is 3.1 to 5.5% by representation of cross sectional area.

7. A multilayer ceramic electronic device comprising a laminated body having alternately laminated internal electrode layers and dielectric layers, wherein

each of the dielectric layers has a thickness of 0.5 μm or less,

each of the internal electrode layers contains ceramic particles,

a content ratio of the ceramic particles contained in the each of the internal electrode layers is 2 to 15% by representation of cross sectional area, and

the each of the dielectric layers has a thickness standard deviation (σ) of 100 nm or less.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 26, 2017
From: KOIDE, NOBUYUKI; KANEKO, TOSHIHIKO; TANAKA, YASUSHI
To: TDK CORPORATION
Reel/Frame 044485/0462 →
Priority Claims (1)
JP 2016-255977 · Dec 28, 2016 · national
Continuity (1)
Related Publication 20180182549A1 · Jun 28, 2018