公开(公告)号：US11380482B2

公开(公告)日：2022-07-05

申请号：US17042523

申请日：2019-03-15

Applicant: TDK CORPORATION

Inventor： Shota Suzuki ,  Nobuyuki Okuzawa ,  Daisuke Hirose ,  Shirou Ootsuki ,  Wakiko Sato

IPC: H01G4/12 ,  C04B35/453 ,  C04B35/495 ,  H01B3/12 ,  H01G4/30 ,  H01G4/33

Abstract: A dielectric composition including a complex oxide containing bismuth, zinc, and niobium, includes a crystal phase formed of the complex oxide and having a pyrochlore type crystal structure, and an amorphous phase. When the complex oxide is represented by a composition formula BixZnyNbzO1.75+δ, in which x, y, and z satisfy relations of x+y+z=1.00, 0.20≤y≤0.50, and 2/3≤x/z≤3/2.

公开(公告)号：US11282643B2

公开(公告)日：2022-03-22

申请号：US16295590

申请日：2019-03-07

Applicant: TDK CORPORATION

Inventor： Shirou Ootsuki ,  Masahito Furukawa ,  Satoshi Wada ,  Shintaro Ueno ,  Yuya Hattori

IPC: H01G4/12 ,  H01G4/30 ,  B28B11/24 ,  C23C14/18 ,  C04B35/117 ,  C04B35/495 ,  C04B35/47 ,  C04B35/468 ,  C04B35/457 ,  C04B35/475 ,  C04B35/634 ,  C04B35/638 ,  C04B35/64 ,  C04B35/01 ,  C01G23/00 ,  C04B35/462 ,  C04B35/626 ,  H01G4/232 ,  H01G4/248

Abstract: A composite structure including a conductor region that is configured from a first oxide, and an insulator region that is configured from a second oxide and that surrounds the conductor region, wherein the first oxide and the second oxide are in hetero structure with each other. A powder and a fired body each having such a composite structure are also preferable.

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：US10199557B2

公开(公告)日：2019-02-05

申请号：US15280469

申请日：2016-09-29

Applicant: TDK CORPORATION

Inventor： Yuiko Hirose ,  Shirou Ootsuki

IPC: H01L41/08 ,  H01L41/187 ,  B41J2/14 ,  H01L41/09 ,  H01L41/113 ,  H01L41/316

Abstract: A piezoelectric film containing (K,Na)NbO3 as the main component, wherein, when a surface of the piezoelectric film was observed in a field view within a specified range, a plurality of first crystals and a plurality of second crystals are arranged in the surface of the piezoelectric film, wherein, the first crystal has a slender shape orientating toward the first orientation along the surface, and the second crystal has a slender shape orientating toward the second orientation which crosses with the first orientation along the surface.

公开(公告)号：US10002714B2

公开(公告)日：2018-06-19

申请号：US15134799

申请日：2016-04-21

Applicant: TDK Corporation

Inventor： Saori Takeda ,  Masahito Furukawa ,  Masanori Kosuda ,  Shirou Ootsuki ,  Yasunori Harada

IPC: H01G4/33 ,  H01G4/12 ,  H01G4/08 ,  C04B35/468 ,  C04B35/622 ,  C04B35/626 ,  C23C14/08

CPC classification number: H01G4/33 ,  C04B35/4682 ,  C04B35/62218 ,  C04B35/6261 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3281 ,  C04B2235/3286 ,  C04B2235/604 ,  C04B2235/6567 ,  C04B2235/787 ,  C04B2235/788 ,  C04B2235/79 ,  C23C14/088 ,  H01G4/085 ,  H01G4/1227 ,  H01G4/1245

Abstract: The present invention relates to a dielectric element such as a thin-film capacitor including a dielectric film. The dielectric film contains a main component represented by the general formula (Ba1-xCax)z(Ti1-yZry)O3 wherein 0