Title:
レゾネータ
Document Type and Number:
Japanese Patent JP4338091
Kind Code:
B2
Abstract:
There is provided a resonator having a piezoelectric ceramic resonator which has excellent free-fall resistance. The resonator comprises a piezoelectric ceramic resonator 2 with a vibrating electrode formed, and a substrate 3 which supports the piezoelectric ceramic resonator 2, wherein the piezoelectric ceramic resonator 2 satisfies the condition of U ¥ 0.88 × H + 20.28, wherein U = maximum elastic energy (kJ/m 3 ) per unit volume, and H = drop height (m) (H > 1) . The present invention can be applied to a resonator 1, wherein the substrate 3 has terminal electrodes 31, 32, and the piezoelectric ceramic resonator 2 is in electrical continuity with the vibrating electrode and is supported on the substrate 3 at both ends via a conductive stator 4.
Inventors:
Tomohisa Higashi
Masakazu Hirose
Teru Suzuki
Koji Taniwaki
Masakazu Hirose
Teru Suzuki
Koji Taniwaki
Application Number:
JP2005111507A
Publication Date:
September 30, 2009
Filing Date:
April 08, 2005
Export Citation:
Assignee:
tdk Corporation
International Classes:
H03H9/17; C04B35/49; C04B35/493; H01L41/09; H01L41/187; H01L41/22; H01L41/257; H01L41/313; H01L41/39
Domestic Patent References:
| JP8237066A | ||||
| JP2001097771A | ||||
| JP2000103674A | ||||
| JP2002308672A | ||||
| JP2001127577A |
Attorney, Agent or Firm:
Mitsuru Oba
Horikawa Miyuki
Horikawa Miyuki
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