| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezo-resonator whose parts count is small and cost is low, and which reduces influence of dust and is low in height, a filter, and a composite substrate. SOLUTION: The piezo-resonator element is obtained by forming an interdigital transducer (IDT) consisting of a pair of interdigital electrodes on the principal plane of a piezoelectric substrate, and utilizes an SH surface wave is arranged above a base substrate in such a way as to form an excitation space between the base substrate and the IDT. A pair of side-face support members are provided so as to pinch and hold both side faces of the base substrate and the piezoelectric substrate. COPYRIGHT: (C)2005,JPO&NCIPI
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