| 摘要 |
A piezoelectric resonator plate includes a base portion and a vibrating portion having a plurality of leg portions. Each of the leg portions is provided with an excitation electrode and a lead electrode. At least two conductive bonding member forming regions for bonding a part of the lead electrode to an external electrode via a conductive bonding member are defined in the base portion. The base portion is formed wider than the vibrating portion and has a base portion central region and base portion wider regions, the base portion central region having the same width as the vibrating portion, the vibrating portion extending from the base portion central region, and the base portion wider regions extending beyond lateral edges of the vibrating portion, the conductive bonding member forming regions being defined in the base portion wider regions. Elongated thin-walled portions starting at boundary corner portions of the base portion between the base portion central region and the base portion wider regions are formed in this base portion. Alternatively, elongated thin-walled portions starting at corner portions on a side of the base portion wider regions from which the leg portions extend are formed in the base portion.
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