发明名称 |
RESONATING ELEMENT, RESONATOR, OSCILLATOR, ELECTRONIC APPARATUS, AND MOBILE OBJECT |
摘要 |
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′-axis direction increases gradually from a central portion toward both ends in an X-axis direction. |
申请公布号 |
US2015028959(A1) |
申请公布日期 |
2015.01.29 |
申请号 |
US201313959986 |
申请日期 |
2013.08.06 |
申请人 |
Seiko Epson Corporation |
发明人 |
NAITO Matsutaro;SATO Toshiaki;NISHIDE Jun;SUZUKI Takumi |
分类号 |
H01L41/047;H03B5/32 |
主分类号 |
H01L41/047 |
代理机构 |
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代理人 |
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主权项 |
1. A resonating element comprising:
a quartz crystal substrate having a vibrating portion and a thin-walled portion integrated with the vibrating portion, the vibrating portion including a vibration region vibrating in a thickness-shear vibration direction, the thin-walled portion being thinner than the vibrating portion; and a pair of excitation electrodes respectively disposed on opposite surfaces of the vibrating portion, wherein when directions orthogonal to each other in a plan view of the quartz crystal substrate are a first direction and a second direction, at least one of the pair of excitation electrodes has a constricted portion where each of a pair of sides of the excitation electrode extending in the first direction includes a portion that is convexly curved toward a center line of the excitation electrode in the second direction. |
地址 |
Tokyo JP |