Vibrator element, vibrator, vibration device, and electronic device

A vibrator element comprising:

• a base portion formed on a plane including a first direction and a second direction orthogonal to the first direction;
• a plurality of vibrating arms which extends in the first direction from the base portion and is arranged in a line in the second direction;
• and
• a piezoelectric element which is formed in each of the vibrating arms so as to cause the vibrating arm to perform flexural vibration in a normal direction to the plane,
• wherein each of the vibrating arms includes a first surface which is compressed or expanded in response to the flexural vibration, a second surface which is expanded when the first surface is compressed and which is compressed when the first surface is expanded, and a side surface that connects the first and second surfaces,
• wherein a plurality of the vibrating arms includes a first vibrating arm and a second vibrating arm which perform the flexural vibration in the opposite directions to each other,
• wherein the first vibrating arm has the piezoelectric element which is formed close to the first surface, and
• wherein the second vibrating arm has the piezoelectric element which is formed close to the second surface.