Quartz device and manufacturing method thereof.

摘要

A quartz device has a quartz plate (11) made of quartz and provided with excitation electrodes on opposite surfaces, and a holding member (12) made of a material having a thermal expansion coefficient substantially equal to that of the quartz plate (11). The holding member (12) is connected to the quartz plate (11) by direct bonding without using any adhesives. Because the thermal expansion coefficients of the quartz plate (11) and the holding member (12) are equal, no thermal stress does not occur in the bonding area. As a result, virtually no stress is applied to the quartz plate (11), and the frequency-temperature characteristic can be improved. <IMAGE>