Resonator element, resonator, oscillator, electronic apparatus, and moving object
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United States of America Patent
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Nov 22, 2016
Grant Date -
Jul 21, 2016
app pub date -
Jan 8, 2016
filing date -
Jan 8, 2016
priority date (Note) -
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Abstract
A resonator element includes a thick section, a middle section and a thin section, in which at least the thick section performs thickness shear vibration, in which a first step difference is provided at a boundary between the thick section and the middle section, and a second step difference is provided at a boundary between the middle section and the thin section, on one side of a direction of the thickness shear vibration, in which a first antinode of flexural vibration is located between the first step difference and the second step difference, and in which, a distance between the first antinode and the first step difference is indicated by d1, a distance between the first antinode and the second step difference is indicated by d2, and a wavelength of the flexural vibration is indicated by λ, a relationship of 0≦d1≦λ/8 and 0≦d2≦λ/8 is satisfied.
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