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

摘要

PROBLEM TO BE SOLVED: To provide a method of obtaining crystal vibration pieces by separating the crystal vibration pieces from a crystal vibration wafer by breaking a connection portion connecting the crystal wafer and respective crystal vibration pieces, a part of the connection portion being prevented from being left as breakage waste on a crystal vibration piece.

SOLUTION: Since the connection portion 2 is formed in contact with two notch portions 12 on either one of a top surface 1A or a reverse surface 1B of the crystal vibration piece 1, the top surface 1A of the crystal vibration piece 1 and the connection portion 2, and the reverse surface 1B and the connection portion 2 are connected in mutually different states, and then the breaking state of the connection portion 2 varies depending on directions in which a load is applied to the crystal vibration piece 1. Consequently, the broken connection portion 2 is prevented from being left on the crystal vibration piece 1 which has been separated from the crystal wafer.

COPYRIGHT: (C)2010,JPO&INPIT