Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Fujihiko Kobayashi0
Date of Patent
January 23, 2007
0Patent Application Number
099407290
Date Filed
August 28, 2001
0Patent Primary Examiner
Patent abstract
The present invention intends to provide a piezo-electric speaker which can generate a sound from the low frequency range to the high frequency range as well as transmit the acoustic vibration to a sound-board with a high efficiency. This is achieved by providing a piezo-electric speaker comprising a piezo-electric member generating a strain according to an electric signal applied thereto; a piezo-electric vibration plate converting the strain to the acoustic vibration; and a sound-board resonating to the acoustic vibration; the piezo-electric plate being supported on the sound-board; the acoustic vibration caused by the piezo-electric vibration plate being propagated from the sound-board to the ambient air to generate a sound.
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