Patent ID: 9041271
Filing Date: 2015-05-26
Classification: H03H

Abstract:
1. A crystal device, comprising: a crystal element, having a first rectangular shape, formed by a crystal material, and comprising an excitation part that vibrates when a voltage is applied and a frame that surrounds a periphery of the excitation part, the frame comprising first edges respectively along a first direction and a second direction intersecting with the first direction; a base, having a second rectangular shape, bonded to a principal surface of the frame, and comprising second edges respectively along the first direction and the second direction; and a lid, having a third rectangular shape, bonded to another principal surface of the frame and comprising third edges respectively along the first direction and the second direction; wherein a bonding material is applied having a thermal expansion coefficient between a thermal expansion coefficient in the first direction of the crystal element and a thermal expansion coefficient in the second direction of the crystal element.