Crystal resonator plate and crystal resonator device
AssigneeDaishinku Corporation
InventorTakuya KOJO
Life of this patent
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Abstract
An AT-cut crystal resonator plate (2) includes a first main surface (2a) on which a first excitation electrode (211) is formed and a second main surface (2b) on which a second excitation electrode (212) is formed. The AT-cut crystal resonator plate (2) further includes: a substantially rectangular-shaped vibrating part (21) that is piezoelectrically vibrated when a voltage is applied to the first excitation electrode (211) and the second excitation electrode (212); a holding part (22) protruding from a corner part (21a) of the vibrating part (21) in a Z′ axis direction of the AT-cut crystal; and an external frame part (23) configured to surround an external circumference of the vibrating part (21) and to hold the holding part (22).
Claims15
An AT-cut crystal resonator plate including a first main surface on which a first excitation electrode is formed and a second main surface on which a second excitation electrode is formed, comprising:
- a substantially rectangular-shaped vibrating part having the first excitation electrode and the second excitation electrode;
- a holding part protruding from a corner part of the vibrating part in a Z′ axis direction of the AT-cut crystal so as to hold the vibrating part;
- and
- an external frame part configured to surround an external circumference of the vibrating part and to hold the holding part.
Dependencies are inferred from the claim text.