Invention Grant
US08053957B2 Piezoelectric vibrating piece having arm ends with excitation electrodes of opposite polarity and piezoelectric vibrator, oscillatory, electronic apparatus and radio wave timepiece having same
失效
压电振动片具有具有相反极性的激励电极的臂端和具有相同极性的压电振动器，振荡器，电子设备和无线电波表
- Patent Title: Piezoelectric vibrating piece having arm ends with excitation electrodes of opposite polarity and piezoelectric vibrator, oscillatory, electronic apparatus and radio wave timepiece having same
- Patent Title (中): 压电振动片具有具有相反极性的激励电极的臂端和具有相同极性的压电振动器，振荡器，电子设备和无线电波表
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Application No.: US12372264Application Date: 2009-02-17
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Publication No.: US08053957B2Publication Date: 2011-11-08
- Inventor: Takeshi Sugiyama
- Applicant: Takeshi Sugiyama
- Applicant Address: JP Chiba
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP Chiba
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2008-044388 20080226
- Main IPC: H03H9/19
- IPC: H03H9/19
Abstract:
To achieve small-sized formation by shortening a total length after ensuring a length of a base portion capable of sufficiently reducing vibration leakage, there is provided a piezoelectric vibrating piece 2 including a piezoelectric plate 10 including a pair of vibrating arm portions 11, 12 arranged in parallel with each other in a state of being extended in one direction from base ends to front ends, and a base portion 13 having connecting portions 13a respectively connected to the pair of vibrating arm portions at middle positions from the base ends to the front ends for integrally supporting the pair of vibrating arm portions by way of the connecting portions, exciting electrodes 20, 21 respectively formed on outer surfaces of the pair of vibrating arm portions for vibrating the pair of vibrating arm portions when a drive voltage is applied thereto, a pair of mount electrodes 22, 23 formed on an outer surface of the base portion and electrically connected respectively to the pair of exciting electrodes, in which at least a portion of the base portion is arranged to be interposed between the pair of vibrating arm portions.
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