公开(公告)号：US09643890B2

公开(公告)日：2017-05-09

申请号：US14661881

申请日：2015-03-18

Applicant: TDK CORPORATION

Inventor： Raitarou Masaoka ,  Toshihiko Kaneko ,  Yuki Yamashita ,  Hiroki Uchiyama ,  Saori Takeda ,  Yuji Sezai ,  Shirou Ootsuki

IPC: C04B35/48 ,  C04B35/49 ,  C04B35/465 ,  H01B3/12 ,  C04B35/47 ,  C04B35/486 ,  C04B35/638

CPC classification number: C04B35/49 ,  C04B35/47 ,  C04B35/48 ,  C04B35/486 ,  C04B35/638 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/6562 ,  C04B2235/79 ,  C04B2235/80 ,  H01B3/12

Abstract: A dielectric composition contains major components that are an A-group containing major components that are at least two selected from the group consisting of Ba, Ca, and Sr and a B-group which contains a major component that is selected from Zr and Ti and which contains at least Zr. The dielectric composition contains an amorphous substance containing the A-group and the B-group and a crystalline substance containing the A-group and the B-group. In the dielectric composition, the inequality 0.5≦α≦1.5 holds, where α is the molar ratio of the A-group to the B-group.

公开(公告)号：US10163560B2

公开(公告)日：2018-12-25

申请号：US15698163

申请日：2017-09-07

Applicant: TDK CORPORATION

Inventor： Yuji Sezai ,  Katsushi Yasuhara

IPC: H01F27/29 ,  H01F27/30 ,  H01F17/02 ,  H01F27/28 ,  H01F17/04

Abstract: A coil device, in which an air-core coil of a cylindrical shape is buried in a core including a magnetic powder and a resin, showing, CV value of the below described cross sectional areas, SA1 to SA5, 0.55 or less, when an outer diameter of the air-core coil is “a1”, an inner diameter of the same is “a2”, and a distance between a surface of the core perpendicular to a direction of winding axis and an end of the air-core coil in the direction of winding axis is “h”, is provided. The coil device is superior in DC superimposing characteristic while suppressing the magnetic saturation.

公开(公告)号：US09481606B2

公开(公告)日：2016-11-01

申请号：US14529623

申请日：2014-10-31

Applicant: TDK CORPORATION

Inventor： Saori Takeda ,  Toshihiko Kaneko ,  Yuki Yamashita ,  Yuji Sezai

IPC: H01L21/02 ,  C04B35/453 ,  H01G4/12 ,  H01G4/33 ,  H01L49/02 ,  H01G4/08

CPC classification number: C04B35/453 ,  C04B35/16 ,  C04B2235/3298 ,  C04B2235/3427 ,  C04B2235/604 ,  C04B2235/6567 ,  C04B2235/80 ,  H01G4/085 ,  H01G4/1209 ,  H01G4/1272 ,  H01G4/33 ,  H01L28/55

Abstract: A dielectric composition containing a crystalline phase represented by a general formula of Bi12SiO20 and a crystalline phase represented by a general formula of Bi2SiO5 as the main components. The dielectric composition contains preferably 5 mass % to 99 mass % of the Bi2SiO5 crystalline phase, and more preferably 30 mass % to 99 mass %.

Abstract translation: 含有由通式Bi 12 SiO 20表示的结晶相和由通式Bi 2 SiO 5表示的结晶相作为主要成分的电介质组合物。 电介质组合物优选含有5质量％〜99质量％的Bi 2 SiO 5结晶相，更优选含有30质量％〜99质量％。

公开(公告)号：US09455087B2

公开(公告)日：2016-09-27

申请号：US14833614

申请日：2015-08-24

Applicant: TDK CORPORATION

Inventor： Saori Takeda ,  Masahito Furukawa ,  Masanori Kosuda ,  Yuji Sezai

IPC: C04B35/00 ,  H01G4/10 ,  H01G4/33 ,  H01G4/12 ,  H01G4/20

CPC classification number: H01G4/10 ,  H01G4/1227 ,  H01G4/20 ,  H01G4/33

Abstract: A dielectric film contains as a main component a dielectric composition represented by the general formula (Ba1-xCax)z(Ti1-yZry)O3 wherein 0.001≦x≦0.400, 0.001≦y≦0.400, and 0.900≦z

Abstract translation: 介电膜含有作为主要成分的由通式（Ba1-xCax）z（Ti1-yZry）O3表示的电介质组合物，其中0.001≤x≤0.400,0.001≤y≤0.40,0.900≤z<0.995。 在介电组合物的X射线衍射图中，介电组合物在由通式表示的四方晶系的（001）面衍射峰位置2θt和（100）面之间具有0.00°≤2θc-2θt<0.20°的关系 由通式表示的立方结构的衍射峰位置2θc。