MEMS switch with improved standoff voltage control
First Claim
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1. A device comprising:
- a substrate;
a movable actuator coupled to the substrate and having a first side and a second side, the moveable actuator being configured such that a stiffness of the movable actuator causes the movable actuator to move from a conduction state to a non-conducting state in the absence of external forces;
a first fixed electrode coupled to the substrate and positioned on the first side of the movable actuator to generate a first actuation force to pull the movable actuator toward the conduction state; and
a second fixed electrode coupled to the substrate and positioned on the second side of the movable actuator to generate a second actuation force to pull the movable actuator toward the non-conducting state.
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Abstract
A MEMS switch is provided including a substrate, a movable actuator coupled to the substrate and having a first side and a second side, a first fixed electrode coupled to the substrate and positioned on the first side of the movable actuator to generate a first actuation force to pull the movable actuator toward a conduction state, and a second fixed electrode coupled to the substrate and positioned on the second side of the movable actuator to generate a second actuation force to pull the movable actuator toward a non-conducting state.
44 Citations
20 Claims
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1. A device comprising:
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a substrate; a movable actuator coupled to the substrate and having a first side and a second side, the moveable actuator being configured such that a stiffness of the movable actuator causes the movable actuator to move from a conduction state to a non-conducting state in the absence of external forces; a first fixed electrode coupled to the substrate and positioned on the first side of the movable actuator to generate a first actuation force to pull the movable actuator toward the conduction state; and a second fixed electrode coupled to the substrate and positioned on the second side of the movable actuator to generate a second actuation force to pull the movable actuator toward the non-conducting state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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forming a first fixed control electrode and a fixed contact on an insulating layer on a substrate; forming a movable actuator on the insulating layer such that the movable actuator overhangs the first fixed control electrode and the contact; forming a second fixed control electrode on the insulating layer and overhanging the movable actuator; and releasing the movable actuator to allow the actuator to be pulled toward a first conduction state with the contact in response to a first actuation force generated between the first fixed control electrode and the movable actuator, to be pulled toward a second non-conducting state in response to a second actuation force generated between the second fixed control electrode and the movable actuator, and to move from the conduction state to the non-conducting state in the absence of external forces due to a stiffness of the movable actuator. - View Dependent Claims (17, 18)
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19. A MEMS switch array comprising:
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a substrate; a first movable actuator coupled to the substrate and having a top side and a bottom side; a second movable actuator coupled to the substrate and having a top side and a bottom side; a first fixed control electrode coupled to the substrate and positioned on the bottom side of the first and second movable actuators to generate a first actuation force to pull the movable actuators toward a conduction state; and a second fixed control electrode coupled to the substrate and positioned on the top side of the first and second movable actuators to generate a second actuation force to pull the movable actuators toward a non-conducting state. - View Dependent Claims (20)
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Specification