Title:
ULTRASONIC TRANSDUCER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/095243
Kind Code:
A1
Abstract:
This ultrasonic transducer comprises: a rigid support plate that has a first surface and a second surface, the support plate being provided with a plurality of void sections that are opened in the first surface, and a plurality of waveguides in which first end sections on one end side having an opening width smaller than those of the void sections are opened in the bottom surface of the void sections, and second end sections on the other end side are opened in the second surface; a flexible resin film that is fixed to the first surface of the support plate so as to cover the plurality of void sections; and piezoelectric elements that are fixed to the flexible resin film so that, when viewed in a plan view, center regions thereof overlap the corresponding void sections, and peripheral regions thereof overlap the first surface of the support plate, the number of piezoelectric elements being the same as the number of the plurality of void sections, wherein air flow paths are provided that can introduce external air into each of a plurality of soundwave channels formed by the plurality of void sections and the plurality of waveguides.
Inventors:
TAKASUGI SATORU (JP)
Application Number:
PCT/JP2021/043197
Publication Date:
June 01, 2023
Filing Date:
November 25, 2021
Export Citation:
Assignee:
SUNCALL CORP (JP)
International Classes:
H04R17/00; H04R1/00; H04R31/00
Domestic Patent References:
| WO2021152776A1 | 2021-08-05 |
Foreign References:
| JP2019518341A | 2019-06-27 |
Attorney, Agent or Firm:
ARAWORE INTERNATIONAL IP LAW FIRM (JP)
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