Vibrator element, vibrator, oscillator, and electronic apparatus

摘要

A quartz crystal vibrator element having the weight section is provided with the intermediate weight section formed to have an arm width W1 larger (thicker) than the arm width W of the vibrating arm section and smaller (thinner) than the arm width W2 of the tip weight section, thereby making the intermediate weight section follow the vibration (the amplitude) of the vibrating arm section. Further, the tip weight section formed to have an arm width W2 larger (thicker) than the arm width W1 of the intermediate weight section is provided, thereby making the tip weight section follow the vibration (the amplitude) of the vibrating arm section and the intermediate weight section. Therefore, the vibration characteristics of the vibrating arm section can be stabilized.

主权项

1. A vibrator element comprising:
a base; first and second vibrating arms independently extending from the base, the first and second vibrating arms each having a first arm width; first and second elongated grooves formed along a longitudinal direction of the first and second vibrating arms, respectively; first and second intermediate weights each having a second arm width that is larger than the first arm width, the first and second intermediate weights independently being formed on first tip sides of the first and second vibrating arms, respectively; and first and second tip weights each having a third arm width that is larger than the second arm width, the first and second tip weights independently being formed on second tip sides of the first and second intermediate weights, respectively, wherein the first and second tip weights are formed immediately adjacent to the first and second intermediate weights through first and second diversions, respectively, and three positions bisecting the first through third arm widths in each of the first and second vibrating arms are aligned in a straight line parallel in the longitudinal direction.