发明名称 |
SURFACE ACOUSTIC WAVE RESONATOR, SURFACE ACOUSTIC WAVE FILTER USING THE SURFACE ACOUSTIC WAVE RESONATOR, AND ANTENNA DUPLEXER |
摘要 |
The present invention provides a surface acoustic wave resonator capable of improving the leak of a surface acoustic wave in the transverse direction and reducing the spurious and having superior characteristics. In a surface acoustic wave filter according to the present invention, an interdigital transducer electrode and reflector electrodes are formed on a piezoelectric substrate, and a SiO 2 thin film is further formed thereon. The interdigital transducer electrode includes a bus-bar electrode region, a dummy electrode region and a finger overlap region, and the SiO 2 thin film is removed from upper sections of the bus-bar electrode regions in the interdigital transducer electrode. |
申请公布号 |
EP1962424(A1) |
申请公布日期 |
2008.08.27 |
申请号 |
EP20070850596 |
申请日期 |
2007.12.14 |
申请人 |
PANASONIC CORPORATION |
发明人 |
NAKAMURA, HIROYUKI;NAKANISHI, HIDEKAZU;IWASAKI, YUKIO;MATSUNAMI, KEN;TSURUNARI, TETSUYA |
分类号 |
H03H9/145;H01L41/09;H01L41/18;H01L41/22;H01L41/23;H01L41/29;H03H9/02;H03H9/25;H03H9/64;H03H9/72 |
主分类号 |
H03H9/145 |
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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