| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic vibration generation element that is shaped nearly a square, can provide a high acoustic output without distortion, provides excellent acoustic matching with a human body, and can easily be manufactured. SOLUTION: The acoustic vibration generation element adopts a piezoelectric bimorph structure wherein piezoelectric ceramics rectangular plates 2 the front side and the rear side of each of which are metalized are clad to the front side and the rear side of an elastic plate 1. The acoustic vibration generation element is characterized in that at least two of the piezoelectric ceramics rectangular plates 2 or more are arranged and clad in parallel at nearly equal positions on the front side and the rear sides of the elastic plate. COPYRIGHT: (C)2006,JPO&NCIPI
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