| 摘要 |
<p>Provided is a piezoelectric vibrator using a piezoelectric substrate in which a bismuth layered compound sets the main crystal phase, wherein satisfactory oscillation characteristics are realized. A piezoelectric vibrator (1) is comprised of a piezoelectric substrate (21) in which a grain-oriented bismuth layered compound sets the main crystal phase, a piezoelectric vibration element (20) having first and second electrodes (22, 23) formed on first and second main surfaces (21a, 21b) to face in the thickness direction with the piezoelectric substrate (21) therebetween, a substrate (10), and bonding members (13, 14) for bonding the substrate (10) and the piezoelectric vibration element (20). The piezoelectric vibration element (20) has an excitation member (20a) constructed by having the first and second electrodes (22, 23) and the piezoelectric substrate (21) partially overlap in the thickness direction of the piezoelectric substrate. The bonding members (13, 14) are bonded to the parts having the reverse vibration displacement direction to the vibration displacement direction of the excitation member (20a).</p> |
