| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric device which does not exert adverse influence on the frequency characteristic of a vibrating part and is strong inexternal impact. SOLUTION: In this piezoelectric device which is provided with a piezoelectric vibration element 51 provided with a piezoelectric element board 52 integrating a thin vibrating part 53a constituting the bottom of a recessed part 53 and a thick annular surrounding part 53b surrounding the periphery of the part 53a, a ground electrode 64 formed on the part 53 side, dividing electrodes 56 and 57 formed on the outer surface of the part 53a and electrode lead parts 54 and 55 connected to the electrodes 56 and 57 and a case 70 which houses the piezoelectric vibration element 51 and is provided with electrodes 72 to 74 and uses a conductive adhesive as connecting means between a ground electrode 65 and the electrode 74 and between the parts 54 and 55 and the electrodes 72 and 73, the connection positions 58 and 59 of the electrodes 72 and 73 for the electrode lead part on the case 70 and the parts 54 and 55 are set at positions being close to the part 53a.
|
