Patent ID: 9070864
Filing Date: 2015-06-30
Classification: H01L,H04M,H04R

Abstract:
1. A piezoelectric vibration device, comprising at least: a support body; a vibration member that is mounted to the support body to be able to vibrate; a vibration element capable of being independently subjected to bending vibration by application of an electric signal; and a deformable first connecting member that is disposed between a first surface of the vibration element that is a bending surface and one main surface of the vibration member; and connects the first surface of the vibration element and the one main surface of the vibration member, wherein the deformable first connecting member has a three-layer structure composed of two adhesive layers and a base layer disposed between the two adhesive layers, the two adhesive layers each being formed of a viscoelastic body, the base layer being in contact with both of the two adhesive layers, the base layer is formed of a non-woven fabric and the viscoelastic body, and the viscoelastic body is impregnated between fibers of the non-woven fabric, and a thickness of the base layer is larger than amplitudes of the bending vibration of the vibration element.