Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-07-12
2011-07-12
SanMartin, J. (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
07977848
ABSTRACT:
An acoustic wave device of the present application includes a piezoelectric substrate (14), interdigital transducer electrodes (13) formed on the piezoelectric substrate (14), and an SiO2film (12) formed so as to cover the electrodes (13). The acoustic wave device also includes a displacement adjustment film (11) formed on the SiO2film (12), and the displacement adjustment film (11) is formed from a substance whose acoustic velocity is slower than that of the substance forming the SiO2film (12). According to this configuration, it is possible to suppress unnecessary waves as well as improve temperature characteristics. Also, by mounting such an acoustic wave device in a communication module or communication apparatus, it is possible to achieve an improvement in reliability.
REFERENCES:
patent: 7135805 (2006-11-01), Yamanouchi
patent: 7453184 (2008-11-01), Kando
patent: 7705515 (2010-04-01), Nishiyama et al.
patent: 2006/0175928 (2006-08-01), Kando
patent: 2007/0096592 (2007-05-01), Kadota et al.
patent: 2007/0107516 (2007-05-01), Fujimoto et al.
patent: 2009/0009028 (2009-01-01), Nishiyama et al.
patent: 2009/0058225 (2009-03-01), Kadota
patent: 2009/0272193 (2009-11-01), Okaguchi et al.
patent: 61 136312 (1986-08-01), None
patent: 6-291596 (1994-10-01), None
patent: 7-254835 (1995-10-01), None
patent: 11-186866 (1999-07-01), None
patent: 2005-150787 (2005-06-01), None
patent: 2006-238211 (2006-09-01), None
patent: 3885824 (2007-02-01), None
patent: WO 2005/034347 (2005-04-01), None
patent: WO 2007/125734 (2007-11-01), None
patent: WO 2007/138844 (2007-12-01), None
Office Action mailed Mar. 21, 2011 in counterpart Korean Application No. 10-2010-7003558.
English Language translation of Office Action mailed Mar. 21, 2011 in counterpart Korean Application No. 10-2010-7003558.
Inoue Shogo
Matsuda Takashi
Satoh Yoshio
Warashina Suguru
Arent & Fox LLP
SanMartin J.
Taiyo Yuden Co. Ltd.
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