公开(公告)号：US20220415574A1

公开(公告)日：2022-12-29

申请号：US17827347

申请日：2022-05-27

申请人： TAIYO YUDEN CO., LTD.

发明人： Teruo ATSUMI

IPC分类号： H01G4/012 ,  H01G4/30

摘要： A ceramic electronic device includes a multilayer structure in which each of a plurality of dielectric layers of which a main component is ceramic and each of a plurality of internal electrode layers having pores are alternately stacked. A continuity modulus of at least one of the plurality of internal electrode layers is 80% or less. An average pore diameter of the pores of the at least one of the plurality of internal electrode layers is equal to or less than each thickness of the plurality of dielectric layers.

公开(公告)号：US20220384109A1

公开(公告)日：2022-12-01

申请号：US17728130

申请日：2022-04-25

申请人： TAIYO YUDEN CO., LTD.

发明人： Hidetoshi MASUDA ,  Minoru RYU ,  Teruo ATSUMI

IPC分类号： H01G4/008 ,  H01G4/30 ,  H01G4/12

摘要： A ceramic electronic device includes a multilayer chip in which a plurality of dielectric layers and a plurality of internal electrode layers are stacked. The plurality of internal electrode layers include Au. Each of the plurality of internal electrode layers includes an Au-containing layer of which an Au concentration with respect to all detected elements is 5 at % or more, on an interface between the each of the plurality of internal electrode layers and a dielectric layer next to the each of the plurality of internal electrode layers. A relationship of C≤500×t/T is satisfied when a thickness of the each of the plurality of internal electrode layers is T nm, a thickness of the Au-containing layer is t nm, and an Au concentration with respect to a total of Ni and Au in a whole of the each of the plurality of internal electrode layers is C at %.

公开(公告)号：US20210035744A1

公开(公告)日：2021-02-04

申请号：US16945460

申请日：2020-07-31

申请人： TAIYO YUDEN CO., LTD.

发明人： Teruo ATSUMI ,  Yoshiki IWAZAKI

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

摘要： A multilayer ceramic device includes a ceramic main body including a plurality of internal electrodes laminated in a first direction, the ceramic main body having a pair of end surfaces respectively facing a second direction perpendicular to the first direction and a direction opposite to the second direction; a pair of protective layers covering respective entire areas of said pair of end surfaces, the protective layers each including at least one of Al, Si, Cr, Zn, Ga, Ge, In, Sn, W, Pt, Au and Bi as a main component thereof; and a pair of external electrodes respectively covering the pair of end surfaces through the pair of protective layers, respectively.