发明名称 |
Elastic wave element and electronic apparatus using same |
摘要 |
An acoustic wave element includes a piezoelectric body, first and second interdigital transducer (IDT) electrodes provided on an upper surface of the piezoelectric body, and a first dielectric layer provided on the upper surface of the piezoelectric body to cover the first and second IDT electrodes. The first dielectric layer has a first part directly above the first IDT electrode and a second part directly above the second IDT electrode. The height of an upper surface of the second part of the first dielectric layer is larger than the height of an upper surface of the first part of the first dielectric layer. This acoustic wave element has a preferable temperature characteristic and electromechanical coupling factor.
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申请公布号 |
US8564172(B2) |
申请公布日期 |
2013.10.22 |
申请号 |
US201013260798 |
申请日期 |
2010.04.19 |
申请人 |
SEKI SHUN-ICHI;KAMIGUCHI HIROKI;NAKANISHI HIDEKAZU;NAKAMURA HIROYUKI;PANASONIC CORPORATION |
发明人 |
SEKI SHUN-ICHI;KAMIGUCHI HIROKI;NAKANISHI HIDEKAZU;NAKAMURA HIROYUKI |
分类号 |
H03H9/25 |
主分类号 |
H03H9/25 |
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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