发明名称 |
Piezoelectric resonator, piezoelectric filter, and communication apparatus |
摘要 |
A piezoelectric resonator includes a supporting substrate having an opening or a concavity, a vibrating section in which at least one pair of an upper electrode and a lower electrode oppose each other so as to sandwich an upper surface and a lower surface of at least one layer of piezoelectric thin film, the vibrating portion being formed over the opening or the concavity, and a heat dissipating film disposed over at least one of the upper electrode and the piezoelectric thin film so as not to cover the vibrating section.
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申请公布号 |
US2004056735(A1) |
申请公布日期 |
2004.03.25 |
申请号 |
US20030656246 |
申请日期 |
2003.09.08 |
申请人 |
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发明人 |
NOMURA TADASHI;YAMADA HAJIME;KUBO RYUICHI |
分类号 |
H03H9/02;H03H9/17;H03H9/56;H03H9/58;H03H9/70;(IPC1-7):H03H9/54 |
主分类号 |
H03H9/02 |
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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