| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric speaker for which sound pressure characteristics are improved by improving flexibility of a piezoelectric resin complex in the connection of the piezoelectric resin complex composed of a plurality of piezoelectric element chips having the same rectangular parallelepiped shape and an organic resin around the piezoelectric element chips and a speaker frame body. SOLUTION: In the piezoelectric speaker comprising the piezoelectric resin complex composed of the plurality of piezoelectric element chips having the same rectangular parallelepiped shape and the organic resin around the piezoelectric element chips, a frame body connected with the piezoelectric resin complex and a conductive electrode film, a connection part and a non-connection part are provided in the connection of the piezoelectric resin complex and the frame body and the flexibility of the piezoelectric resin complex is improved. The piezoelectric resin complex has a form which can be approximated to a curved surface selected from one or more kinds of a part of a columnar curved surface, a part of a conical curved surface, a part of a spherical curved surface and a part of an ellipsoidal curved surface. COPYRIGHT: (C)2007,JPO&INPIT
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