发明名称 |
ACOUSTIC WAVE FILTER |
摘要 |
A configuration that reduces a parasitic capacitance between wires is achieved at a low cost. Disclosed is an acoustic wave filter provided with a piezoelectric substrate 1, resonators 2a and 2b that include a comb-shaped electrode formed on the piezoelectric substrate 1, a wiring portion 3 that is connected to the comb-shaped electrode, and a dielectric layer 4 formed to cover the comb-shaped electrode. The wiring portion 3 is provided with a lower layer wiring portion 3d that is disposed in the same layer as the comb-shaped electrode and an upper layer wiring portion 3e that is disposed on the lower layer wiring portion 3d. The upper layer wiring portion 3e includes a region that has a wider electrode width than the electrode width of the lower layer wiring portion 3d. |
申请公布号 |
US2012105298(A1) |
申请公布日期 |
2012.05.03 |
申请号 |
US201213344274 |
申请日期 |
2012.01.05 |
申请人 |
INOUE KAZUNORI;MATSUDA TAKASHI;MIURA MICHIO;TAIYO YUDEN CO., LTD. |
发明人 |
INOUE KAZUNORI;MATSUDA TAKASHI;MIURA MICHIO |
分类号 |
H03H9/64;H01Q1/50;H03H9/72 |
主分类号 |
H03H9/64 |
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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