| 摘要 |
A capacitor-built-in type piezoelectric resonator which is thin and small in size, and has high reliability is formed by forming a pair of vibrating electrodes on both principal surfaces of a piezoelectric substrate, and joining a sealing substrate made of a ceramic material to form a capacitance via a frame onto one vibrating electrode, and joining a sealing substrate made of a resin material via a frame onto the other vibrating electrode.
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