公开(公告)号：US11657970B2

公开(公告)日：2023-05-23

申请号：US17233280

申请日：2021-04-16

申请人： TAIYO YUDEN CO., LTD.

发明人： Yuta Saito ,  Tomoya Hagiwara

IPC分类号： H01G4/30 ,  H01G4/12 ,  H01G4/008 ,  C04B35/468 ,  H01G4/012

CPC分类号： H01G4/1227 ,  C04B35/4682 ,  H01G4/008 ,  H01G4/012 ,  H01G4/30 ,  C04B2235/3224 ,  C04B2235/3267 ,  C04B2235/3418 ,  C04B2235/76

摘要： A dielectric substance includes a core-shell grain having a twin crystal structure. An interface of the twin crystal structure of the core-shell grain extends from a shell on one side, passes through a core, and extends to the shell on the other side.

公开(公告)号：US11581143B2

公开(公告)日：2023-02-14

申请号：US16915839

申请日：2020-06-29

申请人： TAIYO YUDEN CO., LTD.

发明人： Yasuyuki Inomata ,  Tomoya Hagiwara ,  Kazumi Kaneda

IPC分类号： H01G4/12 ,  C04B35/46 ,  C04B35/468 ,  C04B35/626 ,  H01G4/30

摘要： A multilayer ceramic capacitor (10) has a laminate body (20) constituted by dielectric layers (17) and internal electrode layers (18) stacked alternately. The dielectric layers (17) contain (Ba(1-x-y)CaxSry)m(Ti(1-z)Zrz)O3, where 0.03≤x≤0.16, 0≤y≤0.02, 0

公开(公告)号：US11282641B2

公开(公告)日：2022-03-22

申请号：US17037462

申请日：2020-09-29

申请人： TAIYO YUDEN CO., LTD.

发明人： Tetsuo Shimura ,  Tomoya Hagiwara ,  Yasuyuki Inomata

IPC分类号： H01G4/12 ,  H01G4/30

摘要： A ceramic electronic device includes a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, wherein a main component of the dielectric layers is (Ba, Sr, Ca)(Zr, Ti)O3, wherein a Ba concentration and a Ca concentration have variation in at least one of crystal grains in the dielectric layers.