发明名称 |
ACOUSTIC WAVE DEVICE AND ELECTRONIC EQUIPMENT USING THE SAME |
摘要 |
An acoustic wave device has: a piezoelectric body; an interdigital electrode that is arranged on the piezoelectric body and excites an acoustic wave; and a dielectric layer that is arranged on the piezoelectric body so as to cover the interdigital electrode. The dielectric layer includes a composition changing portion made up of a medium where propagation velocity of a transverse wave continuously increases upward. With this configuration, it is possible to shift a spurious radiation by a high-order mode that propagates inside the dielectric layer to a higher frequency, so as to reduce an influence of the spurious radiation by the high-order mode.
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申请公布号 |
US2010060102(A1) |
申请公布日期 |
2010.03.11 |
申请号 |
US20090552606 |
申请日期 |
2009.09.02 |
申请人 |
GOTO REI;NAKANISHI HIDEKAZU;NAKAMURA HIROYUKI |
发明人 |
GOTO REI;NAKANISHI HIDEKAZU;NAKAMURA HIROYUKI |
分类号 |
H01L41/04 |
主分类号 |
H01L41/04 |
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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