CRYSTAL DEVICE

To provide a crystal device with small variations and excellent acceleration sensitivity characteristics.SOLUTION: A crystal device in which a crystal piece 20 is attached to a pedestal 11 provided in a package 10 with an adhesive at four points reduces the effects of stress by making a center line...

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Bibliographische Detailangaben
1. Verfasser:	ABE TOMOHITO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRONIC CIRCUITRY ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PHYSICS RESONATORS TESTING
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Beschreibung
Zusammenfassung:	To provide a crystal device with small variations and excellent acceleration sensitivity characteristics.SOLUTION: A crystal device in which a crystal piece 20 is attached to a pedestal 11 provided in a package 10 with an adhesive at four points reduces the effects of stress by making a center line m connecting the midpoints of both short sides of the crystal blank 20 and a straight line connecting the center Q of the crystal blank and each bonding point to intersect at an angle θ of 22° or more and 30° or less.SELECTED DRAWING: Figure 1 【課題】バラつきが小さく、良好な加速度感度特性を備えた水晶デバイスを提供する。【解決手段】パッケージ１０内に設けられた台座１１に、水晶片２０が接着剤によって４点で接着される水晶デバイスであって、水晶片２０の両短辺の中点を結ぶ中心線ｍと、前記水晶片の中心Ｑと各接着点とを結ぶ直線とが、それぞれ２２°以上３０°以下の角度θで交わるようにしたことで、応力の影響を低減する水晶デバイスとしている。【選択図】図１