| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric substrate, a piezoelectric vibrator and a method for manufacturing the same, capable of preventing a characteristic deterioration, without having a displacing distribution center deviate from a central position of the substrate, even when a convex type piezoelectric substrate is supported in a cantilever manner. SOLUTION: The convex type piezoelectric substrate comprises tapered surfaces 24 and 25 in a predetermined width from counterposed two edges 22 and 23 of a rectangular plate-like piezoelectric substrate 21 toward the center of the substrate. In this case, the width (a) of the tapered surface 24 provided at the one edge side of the piezoelectric substrate is set larger than the width (b) of the tapered surface 25, provided at the other edge side of the substrate.
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