Quartz crystal unit and holding structure for same

Details Quartz crystal unit and holding structure for same Quartz crystal unit and holding structure for same

2008-06-17

2008-06-17

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

07388320

ABSTRACT:
A crystal unit includes: a crystal blank in which a depression which function as a vibration region is formed; first and second excitation electrodes formed on both principle surfaces, respectively, of the crystal blank in the vibration region; first and second extending electrodes provided so as to extend from the first and second excitation electrodes, respectively, toward the outer periphery of the crystal blank; and a receptacle body. Bonding of the first extending electrode with eutectic alloy at one point of the outer periphery of the crystal blank electrically and mechanically connects the crystal blank to the receptacle body with the one point as the fixed end. The second extending electrode extends as far as the position of the fixed end and is electrically connected to the receptacle body by wire bonding at the position of the fixed end.

REFERENCES:
patent: 6388363 (2002-05-01), Kotani et al.
patent: 2004/0135471 (2004-07-01), Arai et al.
patent: 2000-278080 (2000-10-01), None
patent: 2001-119264 (2001-04-01), None
patent: 2004-080711 (2004-03-01), None
Machine translation JP-2000-278080.
Machine translation JP-2001-119264.
Machine translation of JP 2004-080711.

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