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JPS57208798A - Piezoelectric electro-acoustic converter - Google Patents

Piezoelectric electro-acoustic converter

Info

Publication number
JPS57208798A
JPS57208798A JP56093754A JP9375481A JPS57208798A JP S57208798 A JPS57208798 A JP S57208798A JP 56093754 A JP56093754 A JP 56093754A JP 9375481 A JP9375481 A JP 9375481A JP S57208798 A JPS57208798 A JP S57208798A
Authority
JP
Japan
Prior art keywords
high polymer
polymer piezoelectric
piezoelectric film
electrodes
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56093754A
Other languages
Japanese (ja)
Inventor
Hirohiko Izumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56093754A priority Critical patent/JPS57208798A/en
Publication of JPS57208798A publication Critical patent/JPS57208798A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To attain electric low input and output impedance and to improve the converting efficiency, with spiral multilayer of a high polymer piezoelectric film toward the direction orthogonal to thickness direction. CONSTITUTION:A high polymer piezoelectric film 1 of band or plate shape with electrodes 2 at the front and back sides is wound in spiral via a thin insulation film 5 to constitute a piezoelectric electro-acoustic converter. The electrodes 2 are provided for the front and back surfaces and polarization processing is given to the high polymer piezoelectric film 1 under a high electric field. In such high polymer piezoelectric film 1, when an electric field is applied between the electrode 2, expansion and contraction is made to the direction of thickness and width (in parallel with the electrodes 2) of the film 1.
JP56093754A 1981-06-19 1981-06-19 Piezoelectric electro-acoustic converter Pending JPS57208798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56093754A JPS57208798A (en) 1981-06-19 1981-06-19 Piezoelectric electro-acoustic converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56093754A JPS57208798A (en) 1981-06-19 1981-06-19 Piezoelectric electro-acoustic converter

Publications (1)

Publication Number Publication Date
JPS57208798A true JPS57208798A (en) 1982-12-21

Family

ID=14091211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56093754A Pending JPS57208798A (en) 1981-06-19 1981-06-19 Piezoelectric electro-acoustic converter

Country Status (1)

Country Link
JP (1) JPS57208798A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121899A (en) * 1983-12-05 1985-06-29 Nippon Atsudenki Kk Electroacoustic transducer
US6713944B2 (en) * 2002-01-02 2004-03-30 Omron Corporation Actuator and method of manufacturing a strain element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121899A (en) * 1983-12-05 1985-06-29 Nippon Atsudenki Kk Electroacoustic transducer
US6713944B2 (en) * 2002-01-02 2004-03-30 Omron Corporation Actuator and method of manufacturing a strain element
US6983521B2 (en) 2002-01-02 2006-01-10 Omron Corporation Method of manufacturing a strain element

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