CRYSTAL OSCILLATOR

WIPO Patent Application WO/2016/060204

A1

[Problem] To provide a crystal oscillator that can be fitted with a small and simple-structured support part without adversely affecting an oscillation characteristic, and that has an excellent frequency-temperature characteristic with a high degree of design flexibility. [Solution] Crystallographic X-axis, Y-axis, and Z-axis of a crystal are rotated by -65° to -50° about the X-axis and defined as an X'-axis, a Y'-axis, and a Z'-axis, respectively, and the X'-axis and the Z'-axis are rotated by 40° to 50° about the Y'-axis and defined as an X"-axis and a Z"-axis, respectively. With reference to a reference rectangle which is a rectangle having sides parallel to the X"-axis and the Z"-axis, the crystal oscillator uses a crystal plate 31 that has a shape obtained by expanding at least a pair of opposite sides of the reference rectangle toward the outside of the reference rectangle, and that has longitudinal oscillation modes in the X"-direction and the Z"-direction.

JP2003318698	WORKING METHOD FOR QUARTZ PIECE AND QUARTZ RESONATOR WORKED BY THIS METHOD
JP7367311	Vibration elements, vibration devices, oscillators, electronic equipment and moving objects

YAMADA HIROAKI (JP)
YAMAGUCHI TAKASHI (JP)
HIROTA KAZUHIRO (JP)

PCT/JP2015/079171

April 21, 2016

October 15, 2015

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NIHON DEMPA KOGYO CO (JP)

H03H9/19

JP2012175520A	2012-09-10
JPS55149519A	1980-11-20
JPS5662404A	1981-05-28

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