Methods and systems for controlling movement within MEMS structures
First Claim
1. A method for reducing undesired movements parallel to a plane of a substrate of proof masses in micro-electromechanical systems (MEMS) devices, the proof masses being suspended above the substrate by one or more suspensions, said method comprising:
- providing a rotationally compliant anchor on the substrate substantially between a first proof mass and suspensions for the first proof mass and a second proof mass and suspensions for the second proof mass;
coupling a first portion of a beam to the first proof mass;
coupling a second portion of the beam to the second proof mass; and
attaching a third portion of the beam directly to the anchor, the third portion extending between the first portion and second portion of the beam and extending across a top of the anchor the anchor and the third portion configured to allow at least a partial rotation of the third portion of the beam about an axis perpendicular to the substrate.
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Accused Products
Abstract
A method for reducing undesired movements of proof masses in micro-electromechanical systems (MEMS) devices is described where the proof masses are suspended above a substrate by one or more suspensions. The method includes providing an anchor on the substrate substantially between a first proof and suspensions for the first proof mass and a second proof mass and suspensions for the second proof mass, coupling a first portion of a beam to the first proof mass, coupling a second portion of the beam to the second proof mass, and attaching a third portion of the beam to the anchor, the third portion extending between the first portion and second portion of the beam, the anchor and the third portion configured to allow for rotation about an axis perpendicular to the substrate.
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Citations
35 Claims
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1. A method for reducing undesired movements parallel to a plane of a substrate of proof masses in micro-electromechanical systems (MEMS) devices, the proof masses being suspended above the substrate by one or more suspensions, said method comprising:
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providing a rotationally compliant anchor on the substrate substantially between a first proof mass and suspensions for the first proof mass and a second proof mass and suspensions for the second proof mass;
coupling a first portion of a beam to the first proof mass;
coupling a second portion of the beam to the second proof mass; and
attaching a third portion of the beam directly to the anchor, the third portion extending between the first portion and second portion of the beam and extending across a top of the anchor the anchor and the third portion configured to allow at least a partial rotation of the third portion of the beam about an axis perpendicular to the substrate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for reducing undesired movements parallel to a plane of a substrate of proof masses in micro-electromechanical systems (MEMS) devices, the proof masses being suspended above the substrate by one or more suspensions, said method comprising:
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providing an anchor on the substrate substantially between a first proof mass and suspensions for the first proof mass and a second proof mass and suspensions for the second proof mass;
coupling a first portion of a beam to the first proof mass;
coupling a second portion of the beam to the second proof mass;
attaching the first portion and the second portion of the beam to a rectangular suspension;
attaching anchoring beams to the rectangular suspension; and
attaching the anchoring beams to an anchor, the anchoring beams, and the rectangular suspension configured to at least a partially rotate about an axis perpendicular to the substrate.
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8. A micro-electromechanical systems device comprising:
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a substrate;
at least two proof masses;
at least two suspensions extending from each said proof mass;
at least one anchor comprising a top, said anchor contacting said substrate; and
at least one beam comprising a first portion, a second portion, and a third portion, said first portion coupled to a first said proof mass, said second portion coupled to a second said proof mass, said third portion connected to said first portion and said second portion, said third portion extending between said first and said second portions, said third portion directly attached to and extending across said top of said anchor, said anchor and said third portion configured to allow at least a partial rotation of said third portion of said beam about an axis perpendicular to said substrate. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A micro-electromechanical systems device comprising:
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a substrate;
at least two proof masses;
at least two suspensions extending from each said proof mass;
at least one anchor contacting said substrate;
at least one beam comprising a first portion and a second portion, said first portion coupled to a first said proof mass, said second portion coupled to a second said proof mass;
a rectangular suspension attached to said first portion and said second portion of said beam; and
at least one anchoring beam attached to said rectangular suspension and configured to be attached to said anchor, said anchoring beam, and said rectangular suspension configured to at least a partially rotate about an axis perpendicular to said substrate.
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20. An anchored support structure for a micro-electromechanical systems device, said structure comprising:
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a rotationally compliant anchor comprising a top, said anchor connected to a substrate; and
a beam comprising a first portion, a second portion, and a third portion, said first portion configured to be coupled to a first proof mass, said second portion configured to be coupled to a second proof mass, said third portion extending between said first portion and said second portion, said third portion directly attached to and extending across said top of said anchor, said anchor and said third portion configured to allow at least a partial rotation of said third portion of said beam about an axis perpendicular to the substrate. - View Dependent Claims (21, 22, 23, 24, 25)
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26. An anchored support structure for a micro-electromechanical systems device, said structure comprising:
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an anchor connected to a substrate;
a beam comprising a first portion and a second portion, said first portion configured to be coupled to a first proof mass, said second portion configured to be coupled to a second proof mass;
a rectangular suspension attached to said first portion and said second portion of said beam; and
at least one anchoring beam attached to said rectangular suspension and configured to be attached to said anchor, said anchoring beam and said rectangular suspension configured to at least partially rotate about an axis perpendicular to the substrate.
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27. A micro-electromechanical systems gyroscope comprising:
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a substrate;
two proof masses;
a plurality of suspensions, a first plurality configured to suspend the first said proof mass above said substrate, and a second plurality configured to suspend the second said proof mass above said substrate; and
an anchored support structure comprising an anchor comprising a top, said anchor formed on said substrate and a beam, said beam comprising a first portion coupled to said first proof mass, a second portion coupled to said second proof mass, and a third portion directly attached to and extending across said top of said anchor, said anchor and said third portion configured to allow at least a partial rotation of said third portion of said beam about an axis perpendicular to said substrate, said third portion extending between said first portion and said second portion. - View Dependent Claims (28, 29, 30, 31)
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32. A micro-electromechanical systems gyroscope comprising:
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a substrate;
two proof masses;
a plurality of suspensions, a first plurality configured to suspend the first said proof mass above said substrate, and a second plurality configured to suspend the second said proof mass above said substrate; and
an anchored support structure comprising an anchor formed on said substrate and a beam, said beam comprising a first portion coupled to the first said proof mass and a second portion coupled to the second said proof mass, a rectangular suspension attached to said first portion and said second portion of said beam and at least one anchoring beam attached to said rectangular suspension and configured to be attached to said anchor, said anchoring beam and said rectangular suspension configured to at least partially rotate about an axis perpendicular to said substrate.
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33. A method for correlating movement between respective proof masses in micro-electromechanical systems devices, the proof masses being suspended above a substrate by one or more suspensions, the suspensions extending from the proof masses at a first end and anchored to the substrate at a second end, said method comprising:
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mechanically connecting at least one suspension for the first proof mass and at least one suspension for the second proof mass, the mechanical connection to at least one suspension at a location between a midpoint of the suspension and an anchor point for the suspension; and
providing a rotational moment within the mechanical connection, the rotational moment being along an axis perpendicular to the substrate. - View Dependent Claims (34, 35)
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Specification