Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-06-04
1998-10-27
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310344, 310348, 310364, 310312, H01L 4108
Patent
active
058281592
ABSTRACT:
A resonator device having an insulating substrate, a strip-shaped vibrating element which is mounted on said insulating substrate and is provided with driving electrodes formed on the main opposing surfaces of a piezoelectric substrate, and terminal electrodes which are provided on said insulating substrate so as to be electrically connected with said driving electrodes and to which driving signals are applied by an external signal source. At least the longitudinal side portions of said vibrating element are coated with a surface active agent. With such a constitution, fluctuations in resonant resistance which are due to the excitation level can be suppressed, thereby contributing to the stable operation of the device, reducing the number of producing steps, and raising the yield rate in production.
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patent: 5382929 (1995-01-01), Inao et al.
patent: 5430345 (1995-07-01), Takahashi
patent: 5502344 (1996-03-01), Yoshimoto et al.
Miyagawa Takashi
Yachi Masanori
Budd Mark O.
Fujitsu Limited
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