Piezoelectric vibration piece and piezoelectric vibration device
A piezoelectric resonance and oscillation technology, which is applied to piezoelectric devices/electrostrictive devices, electrical components, impedance networks, etc., can solve the problems of shrinking, constraining oscillation energy, and inability to obtain it, and achieves the reduction of base size, suppression of Diffusion, the effect of reducing oscillation leakage
Inactive Publication Date: 2008-06-11
DAISHINKU CORP
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Problems solved by technology
[0006] However, in the tuning fork crystal resonator described in Patent Document 1, as the size of the tuning fork crystal resonator plate is further reduced, the tendency is that the base portion is further reduced
In particular, when the base area is further reduced (in particular, the length of the base area is shortened), not only the effect of confining the oscillation energy well cannot be obtained, but also it is difficult to obtain an effective bonding area for the conductive bonding member in the base area, so there are problems such as The problem that the joint strength of the connection target of the tuning fork crystal resonator base is reduced
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[0027] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Note that in the following embodiments, the present invention is applied to a tuning-fork crystal resonator as a piezoelectric resonator.
[0028] As shown in Figures 1 and 2, a tuning fork crystal resonator 1 according to the present invention comprises a tuning fork crystal resonator plate 2 (herein referred to as a piezoelectric resonator plate), a base 3 for supporting the tuning fork crystal resonator plate 2, and a It is used to airtightly seal the top cover 4 of the tuning fork type crystal resonator plate 2 supported on the base 3 . In the tuning fork type crystal resonator 1, as shown in FIG. Tight seal. In this case, as shown in FIG. 2 , the base 3 and the tuning-fork type crystal resonator plate 2 are bonded together by the conductive bonding member 5 .
[0029] Next, each element of this tuning-fork type crystal resonator 1 is explained. The base 3 ...
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A piezoelectric vibration piece comprising a base unit and a vibration unit having a plurality of legs, wherein each leg is provided with an exciting electrode and a lead-out electrode, and the base unit is provided with at least two conductive joining member forming regions for allowing part of a lead-out electrode to join with an external electrode via a conductive joining member. The base unit is formed to be wider than the vibration unit, and has a base center region for allowing a vibration unit formed to be the same in width as the vibration unit to extend and a base width-wide region extending beyond the vibration unit to set conductive joining member forming regions. A slender, thin-wall element starting at the boundary corner between the base center region and the base width-wide region of the base unit is formed on this base unit. Or, a slender, thin-wall element starting at the corner on a leg extending side of the base width-wide region is formed on this base unit.
Description
technical field [0001] The present invention relates to a piezoelectric resonant plate and a piezoelectric resonator, and more specifically, relates to the structure of the piezoelectric resonant plate. Background technique [0002] Piezoelectric oscillation devices include a tuning-fork crystal oscillator using a tuning-fork crystal oscillation plate composed of a base and an oscillating portion having two branches protruding from the base (for example, see Patent Document 1). The tuning fork crystal resonator is used in electronic devices, portable terminals, etc. to provide precise clock frequencies. [0003] The tuning-fork crystal resonator described above has a case composed of a base and a cover, and the tuning-fork crystal resonator plate supported on the base and joined by a conductive joining member is hermetically sealed in the case. As the conductive joining member, for example, a conductive adhesive is used. The base of the tuning fork crystal resonator plate ...
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IPC IPC(8): H03H9/215H03H9/19H01L41/08H01L41/09H01L41/22H01L41/23H01L41/29H01L41/313
CPCH03H9/215H03H9/1021
Inventor 白井崇
Owner DAISHINKU CORP