Title:
LAMINATED PIEZOELECTRIC ACTUATOR
Document Type and Number:
Japanese Patent JP3184991
Kind Code:
B2
Abstract:
PURPOSE: To get a piezoelectric actuator large in displacement without bonding it by putting the direction of the displacement of an actuator in parallel with or a right angle to a band-shaped electrode.
CONSTITUTION: A band-shaped electrode 11 is made as a first band-shaped electrode on one side of a piezoelectric ceramic sheet 1. A full-face electrode 12 is made at the end of the piezoelectric ceramic sheet 1, and a first electrode layer is made together with the first band-shaped electrode. A band-shaped electrode 13 is made as a second band-shaped electrode on one side of a piezoelectric ceramic sheet 2. A full-face electrode 14 is made in the position opposite to the full-face electrode 12 of the first electrode layer, thus a second electrode layer is made together with the second band-shaped electrode. These piezoelectric ceramic sheets 1 and piezoelectric ceramic sheets 2 are stacked in plural numbers alternately so that the other band-shaped electrode may be positioned in nearly center position of the other band-shaped electrode. The band-shaped electrodes 11 and 13 and the full-face electrodes 12 and 14 are connected, respectively, in parallel to external electrodes.
Inventors:
Tomeji Ohno
Tetsuo Yoshida
Yoshiaki Fuda
Tetsuo Yoshida
Yoshiaki Fuda
Application Number:
JP2509392A
Publication Date:
July 09, 2001
Filing Date:
February 12, 1992
Export Citation:
Assignee:
Tokin Co., Ltd.
International Classes:
H01L41/083; H01L41/09; (IPC1-7): H01L41/083
Attorney, Agent or Firm:
Yosuke Goto (1 person outside)