Patent ID: 7122945

Claim:
A tuning fork resonator comprising a base portion and a plurality of leg portions extending in the same direction from the base portion in parallel to one another, wherein a groove portion is formed in a major surface of each leg portion, an in-groove electrode is formed in the groove portion, a side surface electrode is formed on a side surface of the leg portion, and the in-groove electrode and the side surface electrode are connected via a base portion electrode formed in the base portion, wherein an outward extending groove electrode extending on at least one of a vertical wall facing the base portion of the groove portion and a vertical wall that is a side surface of the groove portion and a leg portion tip-side major surface from the in-groove electrode of the groove portion, and a beside-groove electrode for leading the outward extending groove electrode on the leg portion major surface along beside the groove portion to the base portion electrode, are formed.