Patent ID: 11894831
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A resonance device comprising:
a resonator including a plurality of upper electrodes, a lower electrode, and a piezoelectric film disposed between the upper electrodes and the lower electrode;
a substrate having a first surface that faces the plurality of upper electrodes of the resonator;
a first power supply terminal disposed on a second surface of the substrate opposite the first surface, with the first power supply terminal being electrically connected to a first upper electrode of the plurality of upper electrodes;
a second power supply terminal disposed on the second surface of the substrate and being electrically connected to a second upper electrode of the plurality of upper electrodes; and
a ground terminal disposed on the second surface and electrically connected to the lower electrode,
wherein an area of the first power supply terminal relative to a plan view of the second surface is different than an area of the second power supply terminal relative to the plan view, such that a capacitance formed between the first power supply terminal and the ground terminal is in a range from −50% to +50% of a capacitance formed between the second power supply terminal and the ground terminal.