Patent ID: 7266869

Claim:
A method for manufacturing a piezoelectric oscillator comprising the steps of: (a) preparing a master substrate partitioned into plural substrate regions; (b) mounting, on each of the substrate regions, a piezoelectric vibrator and an IC for controlling an oscillation output of the piezoelectric vibrator; and (c) dividing the master substrate into the individual substrate regions by cutting the master substrate on outside circumferences of the individual substrate regions, thereby obtaining a plurality of piezoelectric oscillators, wherein in the step (a), a recess is formed in each of the substrate regions of the master substrate, wherein in the step (b), the piezoelectric vibrator and the IC are accommodated in the recess of the substrate region and thereafter, an aperture of the recess is closed with a closure, wherein in the step (a), the recess is formed in a two-step configuration including a deep recess portion on a relatively inner side, and a shallow recess portion on a relatively outer side, wherein in the step (b), either one of the piezoelectric vibrator and the IC for controlling the oscillation output of the piezoelectric vibrator is accommodated in the deep recess portion on the relatively inner side, whereas the other device is accommodated in the shallow recess portion on the relatively outer side.