发明名称 |
Piezoelectric vibration element and piezoelectric filter |
摘要 |
A piezoelectric oscillator using zinc oxide as a piezoelectric plate which eliminates unwanted resonance called inharmonic overtone by optimizing ratio Le/H of driving electrode length Le to oscillator thickness H. Ratio Le/H is set between 4 and 100 in the piezoelectric oscillator polarized in a thickness direction of a piezoelectric plate and using thickness extension vibration as main vibration or the piezoelectric oscillator polarized in a length direction of the piezoelectric plate and using thickness shear vibration as main vibration. This achieves stable characteristic because no unwanted resonance exists between the resonance frequency and anti-resonance frequency of the main vibration.
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申请公布号 |
US7129799(B2) |
申请公布日期 |
2006.10.31 |
申请号 |
US20040473761 |
申请日期 |
2004.02.19 |
申请人 |
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发明人 |
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分类号 |
H01L41/09;H03B5/32;H01L41/18;H03H9/17;H03H9/56;H03H9/58 |
主分类号 |
H01L41/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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