Invention Grant
- Patent Title: Surface acoustic wave device and communication terminal using the same
- Patent Title (中): 表面声波装置和通信终端使用相同
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Application No.: US11514229Application Date: 2006-09-01
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Publication No.: US07675387B2Publication Date: 2010-03-09
- Inventor: Kazuyuki Sakiyama , Kengo Asai , Atsushi Isobe , Kunio Matsumoto , Shinichi Fujiwara
- Applicant: Kazuyuki Sakiyama , Kengo Asai , Atsushi Isobe , Kunio Matsumoto , Shinichi Fujiwara
- Applicant Address: JP Iwate
- Assignee: Hitachi Media Electronics Co., Ltd.
- Current Assignee: Hitachi Media Electronics Co., Ltd.
- Current Assignee Address: JP Iwate
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2005-344870 20051130
- Main IPC: H01L41/00
- IPC: H01L41/00
Abstract:
A surface acoustic wave device in the present invention is provided with a piezoelectric substrate, a supporting substrate being jointed to the piezoelectric substrate and including a material different in expansion coefficient from the piezoelectric substrate and an interdigital electrode for exciting a surface acoustic wave, the electrode being arranged on the surface of the piezoelectric substrate. Either the interdigital electrode or the piezoelectric substrate is configured so that the interdigital electrode is 40% or more to 70% or less as long as the piezoelectric substrate in the direction to which a surface acoustic wave propagates.
Public/Granted literature
- US20070120623A1 Surface acoustic wave device and communication terminal using the same Public/Granted day:2007-05-31
Information query
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