CRYSTAL OSCILLATION DEVICE

摘要

A crystal oscillation device in which crystal unit is mounted on a package board as a package material and the package board is joined to a mounting board by conductive joining materials. Moreover, a gap is provided between the package board and the mounting board other than portions joined by the conductive joining material and the conductive joining material.

主权项

1. A crystal oscillation device comprising:
a first package material having opposing upper and lower surfaces; a crystal unit coupled to the upper surface of the first package material; a mounting board coupled to the lower surface of the first package material and defining a cavity in a portion of the mounting board; and a temperature-sensitive element coupled to the lower surface of the first package material and disposed at least partially in the cavity of the mounting board, wherein the mounting board is coupled to the lower surface of the first package material by a plurality of conductive joining materials, such that a gap is provided between the lower surface of the first package material and the mounting board other than where the plurality of conductive joining materials couple the mounting board to the first package material.