| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric device for holding a piezoelectric vibrating piece in a desired posture stably with high reproducibility.SOLUTION: A crystal vibrator 1 has: a crystal vibrating piece 10 having a base 11, a pair of vibrating arms 12 extending from the base 11 and a supporting part 13 connected to the base 11; a package 20 accommodating the crystal vibrating piece 10; and a first adhesive 30 and a second adhesive 31 for bonding the crystal vibrating piece 10 and the package 20. The supporting part 13 has joints 13b, 13c, 13d to be bonded to the package 20, and the joints 13b, 13c, 13d are provided at positions separated from one another. In a direction where the vibrating arms 12 extend, the joints 13b, 13c are provided closer to the vibrating arms 12 than the joint 13d and between the first adhesive 30 for bonding the joints 13b, 13c closer to the vibrating arms 12 and the second adhesive 31 for bonding the joint 13d, the second adhesive 31 has a higher curing shrinkage. |
