Title:
圧電素子および圧電アクチュエータ
Document Type and Number:
Japanese Patent JP6540934
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a piezoelectric element and a piezoelectric actuator in which stresses do not easily concentrate locally and fabrication work can therefore be facilitated.SOLUTION: Provided is a piezoelectric element 110 used for a piezoelectric actuator or a piezoelectric transformer, the piezoelectric element 110 having a piezoelectric layer 112 and internal electrodes 113, 114 alternately layered via the piezoelectric layer 112 and provided with an element body 111 formed in a ring shape and external electrodes 115, 116 provided on the side surface of the element body 111 and connected with the internal electrodes 113, 114, a through-hole 119 provided at center of the element body 111 having its cross section formed to a shape except a regular circle. As the piezoelectric element 110 is formed in shape of a ring, stresses do not concentrate locally and breakdown hardly occurs. Furthermore, work is facilitated when the external electrodes of the piezoelectric element 110 are formed.
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Inventors:
Isumi Asumi
Toru Esaki
Shigeki Sato
Toru Esaki
Shigeki Sato
Application Number:
JP2013204708A
Publication Date:
July 10, 2019
Filing Date:
September 30, 2013
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
H01L41/083; H01L41/047; H01L41/053; H01L41/09; H01L41/107; H01L41/273; H01L41/293; H01L41/337; H01L41/338
Domestic Patent References:
| JP4116990A | ||||
| JP2012209427A | ||||
| JP2000236123A | ||||
| JP2009130151A | ||||
| JP62291080A | ||||
| JP200250418A |
Attorney, Agent or Firm:
Takeo Fukuchi