公开(公告)号：US09437807B2

公开(公告)日：2016-09-06

申请号：US14674466

申请日：2015-03-31

Applicant: TDK CORPORATION

Inventor： Yuko Saya ,  Taku Masai ,  Masahito Furukawa ,  Masamitsu Haemori

IPC: H01L41/187 ,  C04B35/475 ,  H01L41/083 ,  H01L41/08

CPC classification number: H01L41/1878 ,  B32B18/00 ,  C04B35/475 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/62675 ,  C04B35/638 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3272 ,  C04B2235/3298 ,  C04B2235/442 ,  C04B2235/449 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/768 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2237/346 ,  C04B2237/68 ,  C04B2237/704 ,  C23C14/08 ,  H01L41/0805 ,  H01L41/083

Abstract: The present invention aims to provide a piezoelectric composition and a piezoelectric element containing the piezoelectric composition. In the piezoelectric composition, the main component contains a substance represented by the following formula with a perovskite structure, (Bi(0.5x+y+z)Na0.5x)m(Ti(x+0.5y)Mg0.5yAlkzCo(1−k)z)O3 0.15≦x≦0.7, 0.28≦y≦0.75, 0.02≦z≦0.30, 0.17≦k≦0.83, 0.75≦m≦1.0, and x+y+z=1.

公开(公告)号：US09620300B2

公开(公告)日：2017-04-11

申请号：US14515031

申请日：2014-10-15

Applicant: TDK Corporation

Inventor： Yuko Saya

IPC: H01G11/42 ,  H01G11/80 ,  H01G11/26 ,  H01G11/74 ,  H01G11/82

CPC classification number: H01G11/80 ,  H01G11/26 ,  H01G11/74 ,  H01G11/82 ,  Y02E60/13

Abstract: An electrochemical device comprises an element body 10 in which a pair of a first inner electrode and a second inner electrode are laminated to sandwich a separator layer; an exterior sheet 4 covering the element body; a first lead terminal 18 drawn to an outside of the exterior sheet 4; and a second lead terminal 28 drawn to the outside of the exterior sheet 4. A proof stress of the exterior sheet is 390 to 980 N/mm2 in JIS Z2241, and a hardness of the exterior sheet is 230 to 380 Hv in Vickers hardness (JIS Z2244).