基本信息:
- 专利标题： ACOUSTIC WAVE FILTER
- 专利标题（中）：声波滤波器
- 申请号：US13344274 申请日：2012-01-05
- 公开(公告)号：US20120105298A1 公开(公告)日：2012-05-03
- 发明人： Kazunori Inoue , Takashi Matsuda , Michio Miura
- 申请人： Kazunori Inoue , Takashi Matsuda , Michio Miura
- 申请人地址： JP Tokyo
- 专利权人： TAIYO YUDEN CO., LTD.
- 当前专利权人： TAIYO YUDEN CO., LTD.
- 当前专利权人地址： JP Tokyo
- 优先权： JP2009-223283 20090928
- 主分类号： H03H9/64
- IPC分类号： H03H9/64 ; H01Q1/50 ; H03H9/72
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.
摘要（中）：
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。
公开/授权文献:
- US09231553B2 Acoustic wave filter 公开/授权日：2016-01-05