Piezoelectric resonator, method of manufacturing the same and electronic part using the same
US7764145B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2007 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Apr 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/0492
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The object of the present invention is to provide a piezoelectric resonator of which vibration frequency can be accurately adjusted and the adjustment accuracy of the vibration frequency can be improved. The piezoelectric resonator of the present invention includes an vibrating arm extended from a base, and a metal film for adjusting frequency formed along the longitudinal direction from the tip of the vibrating arm, in which the metal film for adjusting frequency is provided with a block pattern divided into a plurality of blocks in compliance with the amount of frequency adjustment. Structuring as above, the frequency adjustment of the piezoelectric resonator is conducted by eliminating the blocks in compliance with the amount of frequency adjustment one by one, which makes it possible to adjust the vibration frequency with accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.