Patent ID: 9143113
Filing Date: 2015-09-22
Classification: H01L,H03B,H03H

Abstract:
1. A resonator element comprising: a substrate that includes a first region having a vibration region that vibrates with a thickness shear vibration, and a second region that is integrated with the first region and has a thickness larger than that of the first region; and excitation electrodes that are respectively provided on a first main surface and a second main surface that are front and rear surfaces of the vibration region, wherein the first region includes wherein the second region includes wherein when an electrical axis, a mechanical axis and an optical axis that are crystal axes of a quartz crystal are respectively represented as an X axis, a Y axis and a Z axis, and when an axis obtained by inclining the Z axis so that a +Z side is rotated in a −Y direction of the Y axis is represented as a Z′ axis and an axis obtained by inclining the Y axis so that a +Y side is rotated in a +Z direction of the Z axis is represented as a Y′ axis, using the X axis as a rotation axis, the substrate is a quartz crystal plate in which a surface including the X axis and the Z′ axis corresponds to a main surface and a direction of the Y′ axis corresponds to a thickness, wherein a first outer edge section that intersects with the vibration direction and the direction that is orthogonal to the vibration direction and inclined with respect to the X axis is provided in a connecting section where the second thick section and the third thick section of the substrate are connected and cut out a corner section, in a plan view.