发明名称 |
Piezoelectric resonator |
摘要 |
A piezoelectric resonator vibrating in the thickness shear-slide mode comprises an elongated ceramic piezoelectric substrate, first and second terminal electrodes formed on both end portions of a front major surface thereof and first and a second vibrating electrodes connected with the first and the second terminal electrodes through first and second extracting electrodes respectively. A third terminal electrode is formed on a central portion of a rear major surface of the substrate, while a third vibrating electrode is formed at a position opposite to the first and the second vibrating electrodes, so that the third terminal electrode is connected with the third vibrating electrode through a third extracting electrode. An auxiliary electrode extends from the third vibrating electrode toward a position opposed to the first terminal electrode. An overlap area of the auxiliary electrode and the first terminal electrode is substantially equal to that of the second extracting electrode and the third terminal electrode. Thus, stray capacitance between the first and the third terminal electrodes and that between the second and the third terminal electrodes are balanced such that the piezoelectric resonator becomes electrically nonpolarized.
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申请公布号 |
US5350965(A) |
申请公布日期 |
1994.09.27 |
申请号 |
US19930088512 |
申请日期 |
1993.07.06 |
申请人 |
MYRATA MANUFACTURING CO., LTD. |
发明人 |
NOTO, KAZUYUKI;YOSINAGA, TAKASI |
分类号 |
H03H3/007;H03H9/13;H03H9/17;H03H9/54;H03H9/56;(IPC1-7):H03H9/17;H01L41/08 |
主分类号 |
H03H3/007 |
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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