发明名称 |
PIEZOELECTRIC RESONATOR AND PIEZOELECTRIC THIN FILM FILTER |
摘要 |
There is provided a piezoelectric resonator and a piezoelectric thin-film filter including the piezoelectric resonator, the piezoelectric resonator being capable of suppressing long-wavelength spurious modes and short-wavelength spurious modes. The planar shape of a vibrating region 18 including a piezoelectric layer 15 disposed between a pair of conductive layers 14 and 16 is rectangle when viewed in the thickness direction. Outer edges 18a of the vibrating region 18 each have a waveform. The vibrating region 18 includes a peripheral portion 18t extending along the outer edges of the planar shape and having a relatively small thickness; and a central portion 18s extending inside the peripheral portion 18t and having a relatively large thickness. |
申请公布号 |
EP1887688(A4) |
申请公布日期 |
2009.08.05 |
申请号 |
EP20060756514 |
申请日期 |
2006.05.24 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
SAITO, YUKA;KAWAMURA, HIDEKI |
分类号 |
H03H9/17;H01L41/09;H01L41/18;H01L41/22;H01L41/253;H03H9/54;H03H9/58 |
主分类号 |
H03H9/17 |
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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