发明申请
- 专利标题： BOUNDARY ACOUSTIC WAVE DEVICE
- 专利标题（中）： 边界声波装置
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申请号： US12680774申请日： 2008-10-21
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公开(公告)号： US20100219718A1公开(公告)日： 2010-09-02
- 发明人: Kazunori Nishimura , Hiroyuki Nakamura , Hidekazu Nakanishi , Ryouichi Takayama , Takashi Inoue
- 申请人： Kazunori Nishimura , Hiroyuki Nakamura , Hidekazu Nakanishi , Ryouichi Takayama , Takashi Inoue
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 优先权： JP2007-274972 20071023
- 国际申请： PCT/JP2008/002976 WO 20081021
- 主分类号： H01L41/09
- IPC分类号： H01L41/09 ; H01L41/04
摘要：
A boundary acoustic wave device includes a first medium layer made of piezoelectric material, a second medium layer provided on the first medium layer, a third medium layer provided on the second medium layer, and an electrode provided at an interface between the second and third medium layers. The electrode drives the third medium layer to generate a transverse wave. A propagation speed of the transverse wave in the third medium layer is lower than a propagation speed of the transverse wave in the first medium layer. A propagation speed of the transverse wave in the second medium layer is lower than the propagation speed of the transverse wave in the first medium layer. This boundary acoustic wave device has a large electro-mechanical coupling coefficient.
公开/授权文献
- US08154171B2 Boundary acoustic wave device 公开/授权日：2012-04-10
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