Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-04-08
2010-11-16
Benson, Walter (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S361000, C310S366000
Reexamination Certificate
active
07834526
ABSTRACT:
A contour resonator at least includes a first vibrating substrate and a second vibrating substrate having main surfaces that face each other and are bonded. The contour resonator includes a first excitation electrode provided on a front main surface of the first vibrating substrate, a second excitation electrode provided on a back main surface of the second vibrating substrate, and a common intermediate excitation electrode provided at an interface between the first vibrating substrate and the second vibrating substrate. The first excitation electrode and the second excitation electrode are electrically connected to constitute a first terminal. The intermediate excitation electrode constitutes a second terminal. The first vibrating substrate and the second vibrating substrate perform a contour vibration in accordance with an excitation signal applied between the first terminal and the second terminal.
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Katsuya Mizumoto et al., “Development of Small Sized Lame-Mode Quartz Crystal Resonators,” 35thEM Symposium, pp. 31-34, 2006 (with translation).
P. C. Y. Lee et al,, “Extensional Vibrations of Rectangular Crystal Plates,” Proc. 35thAnn. Freq. Control Symposium, pp. 222-229, May 1981.
Benson Walter
Gordon Bryan P
Oliff & Berridg,e PLC
Seiko Epson Corporation
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