CRYSTAL DEVICE

PROBLEM TO BE SOLVED: To provide a crystal device which inhibits a gas occurring therein from adhering to a crystal element and thereby reduces fluctuations of the oscillatory frequency of the crystal element.SOLUTION: A crystal device includes: a rectangular substrate 110a; a rectangular frame body 110b provided on an upper surface of the substrate 110a; a crystal element 120 mounted on an electrode pad 111 provided on an upper surface of the substrate 110a which is enclosed by the frame body 110b; a first joint member 150 provided on the frame body 110b; a second joint member 160 which is provided on the frame body 110b and has a melting point higher than the first joint member 150; and a lid 130 which is joined to the frame body 110b through the first joint member 150 and the second joint member 160. 【課題】 水晶素子に発生したガスが付着することを抑え、水晶素子の発振周波数の変動を低減することができる水晶デバイスを提供する。【解決手段】 水晶デバイスは、矩形状の基板１１０ａと、基板１１０ａの上面に設けられた矩形状の枠体１１０ｂと、枠体１１０ｂで囲まれる領域であって基板１１０ａの上面に設けられた電極パッド１１１に実装された水晶素子１２０と、枠体１１０ｂ上に設けられた第一接合部材１５０と、枠体１１０ｂ上に設けられ、第一接合部材１５０よりも融点が高い第二接合部材１６０と、第一接合部材１５０と第二接合部材１６０とを介して、枠体１１０ｂ上に接合された蓋体１３０と、を備えている。【選択図】図２