Title:
TRANSDUCER, METHOD FOR DRIVING SAME, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/235080
Kind Code:
A1
Abstract:
A transducer having a piezoelectric element and a membrane body provided with a membrane support having a hollow part and a vibrating membrane displaceable in the membrane thickness direction and connected to the membrane support, the piezoelectric element being laminated on top of the vibrating membrane. The piezoelectric element includes a first laminate provided with a pair of first electrodes and a first piezoelectric membrane sandwiched between the pair of first electrodes, and a second laminate provided with a pair of second electrodes and a second piezoelectric membrane sandwiched between the pair of second electrodes and spaced apart from the first laminate.
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Inventors:
NAIKI TAKASHI (JP)
DATE TOMOHIRO (JP)
SHIMOJI NORIYUKI (JP)
DATE TOMOHIRO (JP)
SHIMOJI NORIYUKI (JP)
Application Number:
PCT/JP2021/012219
Publication Date:
November 25, 2021
Filing Date:
March 24, 2021
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H04R17/00; H04R17/02
Foreign References:
| JP2010212968A | 2010-09-24 | |||
| JPH06148154A | 1994-05-27 | |||
| JPH06121390A | 1994-04-28 | |||
| JP2007001051A | 2007-01-11 |
Other References:
XU TINGZHONG; ZHAO LIBO; JIANG ZHUANGDE; CUI ZHIWEI; ZHANG JIAWANG; LI JIE; LI ZHIKANG; ZHAO YIHE: "Coupled Piezoelectric Micromachined Ultrasonic Transducers Array with High Ultrasonic Emission Performance", 2018 IEEE 13TH ANNUAL INTERNATIONAL CONFERENCE ON NANO/MICRO ENGINEERED AND MOLECULAR SYSTEMS (NEMS), 22 April 2018 (2018-04-22), pages 151 - 154, XP033466829, DOI: 10.1109/NEMS.2018.8556899
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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