Patent ID: 6606772
Filing Date: 2003-08-19
Classification: H03H,H04R,Y10T

Abstract:
A manufacturing method of a piezoelectric vibrator having a piezoelectric vibration plate formed with a piezoelectric vibration portion and a frame portion integrally connected with the piezoelectric vibration portion and surrounding the piezoelectric vibration portion, on respective surfaces of which a pair of lid members are bonded to hermetically seal the piezoelectric vibration portion without interfering with vibration of the piezoelectric vibration portion, comprising the steps of:providing a pair of soda-lime glass lid members; forming a metal film over substantially entire opposite surfaces of the piezoelectric vibration plate; forming oscillation electrode films and bonding films at the same time by at the metal film to form the oscillation electrode films on opposite surfaces of the piezoelectric vibration portion for vibrating the piezoelectric vibration portion, and to form the bonding films on opposite surfaces of the frame portion for bonding the frame portion to the pair of lid members; and laminating the piezoelectric vibration plate and the pair of lid members through the bonding films by heating the bonding films to a temperature within the range of 100-200Â° C. and applying a voltage of 0.5-5.0 kV between the lid members and the bonding films with the piezoelectric vibration plate serving as an anode.