PIEZOELECTRIC ELEMENT AND AUDIO EQUIPMENT

A piezoelectric element including a piezoelectric sheet, which exhibits piezoelectricity when it is stretched, such as a polylactic acid, has a problem in that the piezoelectric sheet tends to tear along a stretching direction. For example, when a bimorph type piezoelectric element (31) is to be con...

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Bibliographische Detailangaben
Hauptverfasser:	ANDOH, MASAMICHI, TAJITSU, YOSHIRO, KURETAKE, SATOSHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	A piezoelectric element including a piezoelectric sheet, which exhibits piezoelectricity when it is stretched, such as a polylactic acid, has a problem in that the piezoelectric sheet tends to tear along a stretching direction. For example, when a bimorph type piezoelectric element (31) is to be configured, the stretching axis (39) of one piezoelectric sheet (32) and the stretching axis (40) of the other piezoelectric sheet (33) are oriented in different directions from each other. Preferably, the one stretching axis (39) and the other stretching axis (40) are intersected at an angle of 90 degrees.