Patent ID: 9325278
Filing Date: 2016-04-26
CPC Classification: H03B,H03H

Claim Text:
1. A resonator element comprising: a base portion; a pair of resonating arms extending from the base portion along a first direction in plan view, a groove portion being arranged along the first direction on at least one of two principal surfaces, which have a front-and-rear relationship with respect to each other, wherein: the principal surface on which the groove portion is arranged includes one principal surface portion and another principal surface portion which sandwich an opening of the groove portion therebetween in plan view and are aligned along a second direction crossing the first direction, the groove portion includes: the groove portion has a non-electrode region in which no electrode is arranged, the non-electrode region including the inner surface and extending from an inner surface-side part of the first side surface to an inner surface-side part of the second side surface.