Title:
CRYSTAL OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2019/059055
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a crystal oscillator with which crystal impedance can be reduced. The crystal oscillator of the present invention comprises: a crystal piece which is AT-cut and provided with rectangular first and second major surfaces having long sides along the X-axis and short sides along the Z'-axis; an external electrode disposed on a surface of the crystal piece; a substrate; and an electrically conductive adhesive member which fixes the crystal piece to the substrate by contacting the substrate and the external electrode. An end surface on a -side of the X-axis of the crystal piece includes a first major surface-side one end surface which forms an angle θ1 (90° ≤ θ1 < 180°) with the first major surface, and a second major surface-side one end surface forming the angle θ1 with the second major surface. An end surface on a +side of the X-axis of the crystal piece includes a first major surface-side other end surface forming an angle θ2 (90° <θ2 < 180°) greater than θ1 with the first major surface, and a second major surface-side other end surface forming the angle θ2 with the second major surface. The electrically conductive adhesive member spans between the first major surface-side one end surface and the first major surface.
Inventors:
KAWAI RYUICHI (JP)
Application Number:
PCT/JP2018/033724
Publication Date:
March 28, 2019
Filing Date:
September 12, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/19; H03H9/10
Foreign References:
| JP2014179771A | 2014-09-25 | |||
| JP2014027506A | 2014-02-06 | |||
| JP2015186241A | 2015-10-22 | |||
| JP2014179773A | 2014-09-25 | |||
| JP2014179769A | 2014-09-25 | |||
| JP2016197778A | 2016-11-24 | |||
| JP2014075707A | 2014-04-24 | |||
| JP2014143587A | 2014-08-07 |
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
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