PIEZOELECTRIC VIBRATION PIECE, METHOD OF FABRICATING PIEZOELECTRIC VIBRATION PIECE, AND PIEZOELECTRIC DEVICE

摘要

According to an embodiment, the present invention provides a piezoelectric vibration piece with an excellent energy trapping effect and improved electrode connectivity, a method for fabricating the same, and a piezoelectric vibrator. The piezoelectric vibration piece includes a vibration substrate including an aftershock part and a peripheral part which is thinner than the aftershock part; and an aftershock electrode which is arranged on one side and the other side of the aftershock part in a thickness direction. The aftershock part includes a protrusion part which is more convex than the one side and the other side of the peripheral part in the thickness direction. Each side of the protrusion part has at least two crystalline surfaces.