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US 12,620,965 B2Granted
Resonance device
AssigneeMurata Manufacturing Co., Ltd.
InventorsMasakazu Fukumitsu, Takehiko Kishi
Life of this patent
Estimating the term…
Abstract
A resonance device is provided that includes a lower lid that has a recessed portion, and a resonator that is mounted on the lower lid and has a vibration arm that performs out-of-plane bending vibration in a space including the recessed portion and a frame provided around the vibration arm and having a facing portion facing a tip of the vibration arm. The facing portion of the frame is located in an outer-side portion of the resonator with respect to a straight line connecting an intersection point of a perpendicular extending from the tip of the vibration arm toward the recessed portion of the lower lid and the recessed portion of the lower lid, to a cavity edge of the recessed portion facing the tip of the vibration arm.
Claims20
A resonance device comprising:
- a first lid that has a first recessed portion;
- a resonator mounted on the first lid and having at least one vibration arm configured to vibrate in a space including the first recessed portion;
- a second lid that has a second recessed portion that faces the first recessed portion of the first lid;
- and
- a frame that is disposed between the first lid and the second lid and is further disposed around the at least one vibration arm and that has a facing portion that faces a tip of the at least one vibration arm,
- wherein a cavity edge of the first recessed portion faces the tip of the at least one vibration arm in a horizontal direction in which the at least one vibration arm extends,
- wherein a perpendicular that extends from the tip of the at least one vibration arm towards the first recessed portion intersects an inner surface of the first lid at an intersection point, and
- wherein the second lid has a smaller thickness in the horizontal direction than a thickness of the first lid in the horizontal direction, such that the facing portion of the frame is located in an outer-side of a straight line that connects the intersection point and the cavity edge and extends to a side surface of the second lid.
5 more elements
A resonance device comprising:
- a lower lid that has a first recessed portion;
- an upper lid that has a second recessed portion and is disposed such that the second recessed portion faces the first recessed portion of the lower lid;
- and
- a resonator disposed between the upper lid and the lower lid and that has at least one vibration arm configured to vibrate in a space defined by the first and second recessed portions, and a frame disposed around the at least one vibration arm and having a facing portion that faces a tip of the at least one vibration arm,
- wherein a first cavity edge of the first recessed portion faces the tip of the at least one vibration arm in a horizontal direction in which the at least one vibration arm extends,
- wherein a perpendicular that extends from the tip of the at least one vibration arm towards the first recessed portion intersects an inner surface of the lower lid at an intersection point, and
- wherein the upper lid has a smaller thickness in the horizontal direction than a thickness of the lower lid in the horizontal direction, such that a second cavity edge of the second recessed portion that faces the tip of the at least one vibration arm is located in an outer-side portion of a straight line that connects the intersection point and the first cavity edge of the first recessed portion and extends to a side surface of the upper lid.
4 more elements
A resonance device comprising:
- a first lid that has a first recessed portion;
- a second lid that has a second recessed portion that faces the first recessed portion of the first lid;
- and
- a resonator disposed between the first lid and the second lid and having at least one vibration arm that extends in a space that includes at least the first recessed portion, and a frame that is disposed around the at least one vibration arm and that has a facing portion that faces a tip of the at least one vibration arm,
- wherein a cavity edge of the first recessed portion faces the tip of the at least one vibration arm in a horizontal direction in which the at least one vibration arm extends,
- wherein a perpendicular that extends from the tip of the at least one vibration arm towards the first recessed portion intersects an inner surface of the first lid at an intersection point, and
- wherein the second lid has a smaller thickness in the horizontal direction than a thickness of the first lid in the horizontal direction, such that the facing portion of the frame is located in an outer-side of a straight line that connects the intersection point and the cavity edge of the first recessed portion and extends to a side surface of the second lid.
4 more elements
Dependencies are inferred from the claim text.