Piezoelectric Resonant Element and Piezoelectric Resonator Using the Same
AssigneeKYOCERA Corporation
InventorsJunji Furue, Masato Murahashi, Yuuji Hata
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Abstract
There is provided a piezoelectric resonant element having excellent electrical characteristics in which spurious is suppressed. The piezoelectric resonant element (10) is constituted by sticking a pair of oscillatory electrodes (12, 13), respectively, to both major surfaces of a rectangular piezoelectric substrate (11). In the nonopposing regions of both the oscillatory electrodes (12, 13), extending portions (12c, 13c) are provided to extend in the opposite directions outward from the center X of the opposing region.
Claims7
1-3. (canceled)
A piezoelectric resonant element having a pair of oscillatory electrodes stuck to both major surfaces of a rectangular piezoelectric substrate, wherein
- the pair of oscillatory electrodes includes opposing portions that are opposed to each other through the piezoelectric substrate, deriving portions that are derived from the opposing portions in directions parallel to one side surface of the piezoelectric substrate, and extending portions that are extended in directions perpendicular to the one side surface, and
- the deriving portion derived from the opposing portion in the one oscillatory electrode and the deriving portion derived from the opposing portion in the other oscillatory electrode are derived in opposite directions, and the extending portion extended from the opposing portion in the one oscillatory electrode and the extending portion extended from the opposing portion in the other oscillatory electrode are extended in opposite directions.
Dependencies are inferred from the claim text.