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    • 1. 发明申请
    • ACOUSTIC WAVE FILTER
    • 声波滤波器
    • US20120105298A1
    • 2012-05-03
    • US13344274
    • 2012-01-05
    • Kazunori InoueTakashi MatsudaMichio Miura
    • Kazunori InoueTakashi MatsudaMichio Miura
    • H03H9/64H01Q1/50H03H9/72
    • H03H9/02992H03H9/02952H03H9/6483H03H9/725
    • 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.
    • 以低成本实现降低电线之间的寄生电容的结构。 公开了一种设置有压电基板1的谐波滤波器,包括形成在压电基板1上的梳状电极的谐振器2a和2b,连接到梳状电极的布线部分3和介电层4 形成为覆盖梳状电极。 布线部分3设置有与梳状电极相同的层中的下层布线部分3d和布置在下层布线部分3d上的上层布线部分3e。 上层布线部分3e包括具有比下层布线部分3d的电极宽度更宽的电极宽度的区域。
    • 7. 发明授权
    • Acoustic wave filter
    • 声波滤波器
    • US09231553B2
    • 2016-01-05
    • US13344274
    • 2012-01-05
    • Kazunori InoueTakashi MatsudaMichio Miura
    • Kazunori InoueTakashi MatsudaMichio Miura
    • H03H9/02H03H9/72H03H9/64
    • H03H9/02992H03H9/02952H03H9/6483H03H9/725
    • 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, resonators that include a comb-shaped electrode formed on the piezoelectric substrate, a wiring portion that is connected to the comb-shaped electrode, and a dielectric layer formed to cover the comb-shaped electrode. The wiring portion is provided with a lower layer wiring portion that is disposed in the same layer as the comb-shaped electrode and an upper layer wiring portion that is disposed on the lower layer wiring portion. The upper layer wiring portion includes a region that has a wider electrode width than the electrode width of the lower layer wiring portion.
    • 以低成本实现降低电线之间的寄生电容的结构。 公开了一种设置有压电基板的声波滤波器,包括形成在压电基板上的梳状电极的谐振器,连接到梳状电极的布线部分和形成为覆盖梳状电极的电介质层 电极。 布线部分设置有与梳状电极相同的层中的下层布线部分和布置在下层布线部分上的上层布线部分。 上层布线部分包括具有比下层布线部分的电极宽度更宽的电极宽度的区域。