TWI777743B

This piezoelectric vibration device comprises: a piezoelectric vibration plate having first and second excitation electrodes on the two main surfaces and first and second metal films respectively connected to the first and second excitation electrodes; and first and second sealing members joined to the main surfaces of the piezoelectric vibration plate so as to cover the first and second excitation electrodes of the piezoelectric vibration plate. At least one of the first and second sealing members is a resin film, and in the resin film, a remaining region other than a joined region that is joined to the corresponding main surface of the piezoelectric vibration plate is joined to a part of an inner surface which is contiguous to the main surface to which the resin film is joined.