Crystal piece and crystal oscillator

一种石英振子、石英片的技术，应用在功率振荡器、阻抗网络、电气元件等方向，能够解决副振动振动泄露、串联电阻值易增大等问题，达到降低CI值的效果

Active Publication Date: 2018-01-26
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the quartz plate is miniaturized, the influence of secondary vibration will appear more significantly, and the influence of vibration leakage will appear, and the series resistance value will easily increase.

Method used

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  • Crystal piece and crystal oscillator
  • Crystal piece and crystal oscillator
  • Crystal piece and crystal oscillator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] (Structure of Quartz Vibrator)

[0026] Hereinafter, a quartz vibrator including a quartz plate according to an embodiment of the electronic component of the present invention will be described with reference to the drawings. figure 1 It is an external perspective view of the quartz vibrator 10 . figure 2 It is an exploded perspective view of the quartz vibrator 10 . image 3 yes figure 1 The cross-sectional structure diagram on A-A.

[0027] Hereinafter, the normal direction with respect to the main surface of the quartz vibrator 10 is defined as the up-down direction, the direction in which the long side of the quartz vibrator 10 extends is defined as the long-side direction when viewed from the upper side, and the short side of the quartz vibrator 10 is defined as the long-side direction. The direction in which the sides extend is defined as the short side direction. In addition, in the following, each configuration may be described with reference to the axial d...

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PUM

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Abstract

The invention discloses a crystal piece and a crystal oscillator. In this crystal piece, long sides of main surfaces of the crystal piece are substantially parallel to a Z' axis of the crystal piece,short sides of the main surfaces are substantially parallel to an X axis of the crystal piece and the frequency of the main oscillation of the crystal piece is 36.0-40.0 MHz. The crystal piece includes a first region that contains the centers of the main surfaces, second and third regions that are adjacent to the first region on both sides in a long side direction, which is a direction in which the long sides extend, and fourth and fifth regions that are adjacent to the first region on both sides in a short side direction, which is a direction in which the short sides extend. The thickness ofthe first region is substantially uniform. The thickness of the second region and the thickness of the third region are smaller than the thickness of the first region and / or the thickness of the fourth region and the thickness of the fifth region are smaller than the thickness of the first region. The crystal piece is characterized in that 13.84 <= W / T <= 14.33 is satisfied, where W is the lengthof the short sides and T is the thickness.

Description

technical field [0001] The present invention relates to an AT-cut quartz plate and a quartz vibrator. Background technique [0002] In recent years, the miniaturization of quartz resonators is desired, and it is necessary to miniaturize the quartz plate. However, if the quartz plate is miniaturized, the influence of secondary vibrations will appear more prominently, and the influence of vibration leakage will appear, and the series resistance value will easily increase. As a conventional invention related to a quartz plate for the purpose of reducing the series resistance value, for example, a quartz vibration plate described in Patent Document 1 is known. In this quartz vibration plate, chamfer processing (bevel processing) is performed on the end portion of the quartz vibration plate. Thereby, the vibration energy is confined under the excitation electrode, and a good series resistance value can be obtained. [0003] As described above, in the quartz plate, various desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H9/19
CPCH03H9/02157H03H9/0552H03H9/1021H03H9/177H03H9/19H03B5/36H03H9/10H03H9/13
Inventor 山本裕之井原木洋河合龙一
Owner MURATA MFG CO LTD
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