Crystal resonator including blank and supporting portion
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United States of America Patent
Stats
-
Jan 10, 2017
Grant Date -
Jun 25, 2015
app pub date -
Dec 23, 2014
filing date -
Dec 24, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A crystal resonator includes a blank and a supporting portion. The blank is cut out from a crystal parallel to a surface that includes a X″-axis and a Z″-axis respectively obtained by rotating an X′-axis and a Z′-axis by 45° around a Y′-axis in a direction from the Z′-axis toward the X′-axis. The X′-axis, the Y′-axis, and the Z′-axis are respectively obtained by rotating a crystallographic X-axis, Y-axis, and Z-axis of the crystal by equal to or more than +37° and equal to or less than 51.5° around the X-axis. The supporting portion is connected to an outer periphery of the blank at a position near an apex of the reference rectangle and where a displacement of vibration in the X″-axial direction or the Z″-axial direction becomes a local minimum when two longitudinal modes of vibration are coupled.
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International Classification(s)
- 2014 Application Filing Year
- H03H Class
- 898 Applications Filed
- 788 Patents Issued To-Date
- 87.76 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H03H Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 10, 2028 |
