Title:
ULTRASONIC TRANSDUCER AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2020/202351
Kind Code:
A1
Abstract:
This ultrasonic transducer comprises an elastic plate that can vibrate in the thickness direction thereof, a plurality of piezoelectric elements that are fixed side by side to a first surface of the elastic plate, a plurality of cylindrical parts that respectively surround the plurality of piezoelectric elements in plan view, and a flexible wiring board. The elastic plate includes a plurality of vibration regions in which the plurality of piezoelectric elements are respectively installed, a plurality of low-rigidity regions that respectively surround the plurality of vibration regions, a plurality of constraint regions that respectively surround the plurality of low-rigidity regions, and a boundary region that demarcates one constraint region from an outside region that is outside the one constraint region in the radial direction. The boundary region has a slit part that separates the one constraint region from the outside region and a bridge part that mechanically connects the one constraint region and the outside region. The flexible wiring board has an insulation layer that is adhered to upper surfaces of the cylindrical parts and a wiring conductor that is provided on an upper surface of the insulation layer. The wiring conductor has a plurality of tip regions that are respectively electrically connected to upper surface electrode layers of the plurality of piezoelectric elements.
Inventors:
TAKASUGI SATORU (JP)
Application Number:
PCT/JP2019/014258
Publication Date:
October 08, 2020
Filing Date:
March 29, 2019
Export Citation:
Assignee:
SUNCALL CORP (JP)
International Classes:
H04R17/00; G01S7/521; H04R31/00
Domestic Patent References:
| WO2007099696A1 | 2007-09-07 |
Foreign References:
| JP2017099566A | 2017-06-08 | |||
| US20130336095A1 | 2013-12-19 |
Attorney, Agent or Firm:
ARAWORE INTERNATIONAL IP LAW FIRM (JP)
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