公开(公告)号：US20230072034A1

公开(公告)日：2023-03-09

申请号：US17903302

申请日：2022-09-06

Applicant: TDK CORPORATION

Inventor： Toshihiro IGUCHI ,  Yoshitaka NAGASHIMA ,  Yasuhiro OKUI ,  Masahide ISHIZUYA ,  Yuuki HIDAKA

IPC: H01G4/30 ,  H01G4/12 ,  H01G4/012

Abstract: A multilayer electronic component includes a plurality of dielectric layers and a plurality of electrode layers that are alternately stacked. A skewness of a distribution of thicknesses of the plurality of dielectric layers at a plurality of arbitrary locations of the plurality of dielectric layers is 0.2 or more.

公开(公告)号：US20240112863A1

公开(公告)日：2024-04-04

申请号：US18468502

申请日：2023-09-15

Applicant: TDK CORPORATION

Inventor： Atsushi WATANABE ,  Yasuhiro OKUI ,  Yoshitaka NAGASHIMA ,  Shinya SAITO ,  Yasuo WATANABE

IPC: H01G4/012 ,  H01G4/232 ,  H01G4/30

CPC classification number: H01G4/012 ,  H01G4/2325 ,  H01G4/30

Abstract: An electronic component includes: a first internal electrode provided in an element body; a second internal electrode provided in the element body; a third internal electrode provided in the element body and drawn out to a first side surface; and a fourth internal electrode provided in the element body and drawn out to a second side surface. The third internal electrode and the fourth internal electrode are electrically connected to each other through an external connection conductor formed on at least the first side surface and the second side surface. In a first direction, the first internal electrode faces the third internal electrode without facing the second internal electrode and the fourth internal electrode. In the first direction, the second internal electrode faces the fourth internal electrode without facing the first internal electrode and the third internal electrode.

公开(公告)号：US20240112860A1

公开(公告)日：2024-04-04

申请号：US18465613

申请日：2023-09-12

Applicant: TDK CORPORATION

Inventor： Naoki HAYAKAWA ,  Yoshitaka NAGASHIMA ,  Yasuhiro OKUI ,  Shinya SAITO ,  Yasuo WATANABE

IPC: H01G4/005 ,  H01G4/232 ,  H01G4/30

CPC classification number: H01G4/005 ,  H01G4/232 ,  H01G4/30

Abstract: An electronic component includes: a first internal electrode which is provided inside an element body and is drawn on a first main surface corresponding to a mounting surface; a second internal electrode which is provided inside the element body, is provided at a position different from the first internal electrode when viewed from a third direction, and is drawn on the first main surface; a third internal electrode which is provided inside the element body, is provided at a position facing the first internal electrode and the second internal electrode in the third direction, and is drawn on the first main surface; wherein the first internal electrode and the third internal electrode face each other in the third direction to form a first capacitor portion, and wherein the second internal electrode and the third internal electrode face each other in the third direction to form a second capacitor portion.

公开(公告)号：US20250095921A1

公开(公告)日：2025-03-20

申请号：US18775472

申请日：2024-07-17

Applicant: TDK Corporation

Inventor： Ken MORITA ,  Yasuhiro OKUI ,  Yuichi NAGAI ,  Kazuyuki HASEBE ,  Shinya ONODERA

IPC: H01G4/248 ,  H01G4/012 ,  H01G4/30

Abstract: An element body includes a main surface and a pair of end surfaces. Each external electrode includes a conductive resin layer on the main surface. Each auxiliary internal electrode is disposed in the same layer as a corresponding internal electrode of a plurality of internal electrodes and is electrically connected to the external electrode to which the corresponding internal electrode is not electrically connected. Each auxiliary internal electrode includes first and second electrode portions. The first electrode portion is exposed to a corresponding end surface of the pair of end surfaces and is electrically and physically connected to the external electrode to which the corresponding internal electrode is not electrically connected. The second electrode portion is positioned between the conductive resin layer of the external electrode to which the corresponding internal electrode is not electrically connected and the corresponding internal electrode.

公开(公告)号：US20220285095A1

公开(公告)日：2022-09-08

申请号：US17684944

申请日：2022-03-02

Applicant: TDK CORPORATION

Inventor： Toshihiro IGUCHI ,  Yuichiro SUEDA ,  Ryota NAMIKI ,  Yasuhiro OKUI ,  Atsushi WATANABE

IPC: H01G4/12 ,  H01G4/30 ,  H01G4/232

Abstract: A ceramic electronic device includes an element body and an external electrode. The element body is formed by laminating a ceramic layer and an internal electrode layer. The external electrode is electrically connected to at least one end of the internal electrode layer. The external electrode includes a baked electrode layer. The baked electrode layer includes a first region and a second region. The first region is contacted with an end surface of the element body and located near a joint boundary with the element body. The second region is located outside the first region and constituting an outer surface of the baked electrode layer. The first region includes a first glass having a predetermined composition. The second region includes a second glass having a predetermined composition.

公开(公告)号：US20150036262A1

公开(公告)日：2015-02-05

申请号：US14445894

申请日：2014-07-29

Applicant: TDK Corporation

Inventor： Nobutaka KAI ,  Yasuhiro OKUI ,  Satoru KINDAICHI ,  Hideki KANEKO ,  Tatsuya KOJIMA ,  Akitoshi YOSHII

IPC: H01G4/12 ,  H01G4/30

CPC classification number: H01G4/1209 ,  H01G4/1218 ,  H01G4/1236 ,  H01G4/30

Abstract: A multilayer ceramic electronic device comprising a lamination in which an internal electrode layer 3 and a dielectric layer 2 are laminated alternatively, wherein the dielectric layer 2 is comprised of a dielectric ceramic composition including a main component represented by a general formula of ABO3 and a rare-earth component R, and segregation phases 5 including the rare-earth component R are present in the dielectric layer 2. When the dielectric layer 2 is separated to six areas by dividing the dielectric layer 2 sandwiched by a pair of the internal dielectric layers 3 in the thickness direction, there are the R segregation phases present in two neighboring areas 2a respectively adjacent to the pair of the internal electrode layers 3 in the dielectric layer 3 at a ratio of double or more compared with the R segregation phases present in two central areas 2b located at a substantially center in the dielectric layer 2.

Abstract translation: 一种多层陶瓷电子器件，包括层叠体，其中内部电极层3和电介质层2交替层叠，其中介电层2由包含由通式ABO 3表示的主要成分和稀有金属的介电陶瓷组合物组成 - 电介质层2中存在包含稀土类成分R的偏析相5.当通过将介电层2夹在一对内部电介质层3之间的介电层2分开来将电介质层2分离为6个区域时 在厚度方向上，在与介电层3中的一对内部电极层3相邻的两个相邻区域2a中存在R偏析相，其比例为两倍以上，与存在于两个中心的R偏析相比较 位于电介质层2中的大致中心的区域2b。