Seiko Epson Corporation

Jun Nishide

Matsutaro Naito

Toshiaki Sato

Takumi Suzuki

Junji Kobayashi

A resonator element includes a substrate having a first region performing thickness shear vibration, a second region located in a periphery of the first region and having a smaller thickness than the first region, a fixed end, and a free end opposite to the fixed end in the first region in a plan view. Excitation electrodes are disposed on a front and a rear of the first region and have regions overlapping each other in the plan view. A center of the first region and a center of the regions overlapping each other are located between a center of the substrate and the free end in the plan view. When Cs is a distance between the center of the regions overlapping each other and the center of the substrate in the plan view, a relation of 105 &#x3bc;m&#x3c;Cs&#x3c;130 &#x3bc;m is satisfied.

Resonator element, resonator, resonator device, oscillator, electronic apparatus, and moving object

A resonating element has a quartz crystal substrate having a vibrating portion and a thin-walled portion that is thinner than the vibrating portion, and a pair of excitation electrodes respectively disposed on opposite surfaces of the vibrating portion. Moreover, in the excitation electrode, each of a pair of sides arranged in a Z'-axis direction is convexly curved toward the center so that the excitation electrode has a constricted portion in which a length in the Z&#x2032;-axis direction increases gradually from a central portion toward both ends in an X-axis direction.

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Ina, Japan

Jun Nishide