VIBRATION PIECE, VIBRATOR, OSCILLATOR, ELECTRONIC APPARATUS, SENSOR AND MOVABLE BODY

摘要

PROBLEM TO BE SOLVED: To provide a vibration piece capable of highly accurately performing a fine adjustment of a resonant frequency of each vibration arm, and further to provide a vibrator provided with the vibration piece, an oscillator, an electronic apparatus, a sensor and a movable body.SOLUTION: A vibration piece 2 comprises: a vibration arm 5 including a base portion, an arm portion 50 extending from the base portion and a wide portion 59 being connected to a leading end portion of the arm portion 50 and having a width greater than that of the arm portion 50; a first driving electrode 84 provided on the vibration arm 5; and a weight layer 57 being provided on the wide portion 59 and having a thickness greater than that of the first driving electrode 84. The weight layer 57 includes: a first weight portion 571; and a second weight portion 572 being disposed closer to a base portion side than the first weight portion 571 and having a portion having a constant width less than a width of the first weight portion 571.