Title:
PIEZOELECTRIC VIBRATOR
Document Type and Number:
WIPO Patent Application WO/2010/032346
Kind Code:
A1
Abstract:
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).
Inventors:
SAKAGUCHI HITOSHI (JP)
Application Number:
PCT/JP2009/002013
Publication Date:
March 25, 2010
Filing Date:
May 08, 2009
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
SAKAGUCHI HITOSHI (JP)
SAKAGUCHI HITOSHI (JP)
International Classes:
H03H9/10; H03H3/02
Foreign References:
| JP2005064689A | 2005-03-10 | |||
| JP2002043885A | 2002-02-08 |
Attorney, Agent or Firm:
MIYAZAKI, CHIKARA (JP)
Chikara Miyazaki (JP)
Chikara Miyazaki (JP)
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