Title:
PIEZOELECTRIC ELEMENT AND BEND DETECTION SENSOR
Document Type and Number:
WIPO Patent Application WO/2016/027614
Kind Code:
A1
Abstract:
Provided is a piezoelectric element which has increased electrostatic capacitance and is obtained by sandwiching a film between electrodes, said film partially containing a piezoelectric resin. A piezoelectric part (23) is achieved by sandwiching a film (3) between a signal electrode (2) and a reference potential electrode (5) in a sensor element (10). A capacitor (24) is achieved by sandwiching a dielectric film (1) between a signal electrode (2) and a reference potential electrode (4). The capacitor (24) is electrically connected in parallel to the piezoelectric part (23). Consequently, the sensor element (10) as a whole device is able to have an electrostatic capacitance CT (that is equal to CA + CB), said electrostatic capacitance being increased in comparison to a case wherein the sensor element is configured only of the piezoelectric part (23).
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Inventors:
KAWAMURA HIDEKI (JP)
Application Number:
PCT/JP2015/071060
Publication Date:
February 25, 2016
Filing Date:
July 24, 2015
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01L41/047; A61B5/11; G01B7/28; G01L1/16; H01L41/113; H01L41/193
Domestic Patent References:
| WO2013111841A1 | 2013-08-01 |
Foreign References:
| JP2002315362A | 2002-10-25 | |||
| JP2014127998A | 2014-07-07 | |||
| JP2000121661A | 2000-04-28 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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