MEMS DEVICE HAVING A LAYER MOVABLE AT ASYMMETRIC RATES
First Claim
1. An electromechanical device comprising:
- a substrate comprising an insulating layer;
a movable layer mechanically coupled to the substrate, the insulating layer on a portion of the substrate facing the movable layer, the movable layer movable between a first position and a second position with respect to the substrate, wherein the movable layer is configured to move from the first position to the second position at a first rate and wherein the movable layer is configured to move from the second position to the first position at a second rate that is faster than the first rate; and
an adhesive layer comprising a different material than the insulating layer, the adhesive layer on at least a portion of the substrate or the movable layer, the adhesive layer configured to increase adhesion between the movable layer and the substrate when the movable layer is in the position of the first position and the second position that is closer to the substrate.
3 Assignments
0 Petitions
Accused Products
Abstract
A microelectromechanical (MEMS) device includes a substrate and a movable layer mechanically coupled to the substrate. The movable layer moves from a first position to a second position at a first rate and from the second position to the first position at a second rate faster than the first rate. The MEMS device further includes an adjustable cavity defined between the substrate and the movable layer and containing a fluid. The MEMS device further includes a fluid conductive element through which the fluid flows at a first flowrate from inside the cavity to outside the cavity upon movement of the movable layer from the second position to the first position and through which the fluid flows at a second flowrate slower than the first flowrate from outside the cavity to inside the cavity upon movement of the movable layer from the first position to the second position.
150 Citations
22 Claims
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1. An electromechanical device comprising:
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a substrate comprising an insulating layer; a movable layer mechanically coupled to the substrate, the insulating layer on a portion of the substrate facing the movable layer, the movable layer movable between a first position and a second position with respect to the substrate, wherein the movable layer is configured to move from the first position to the second position at a first rate and wherein the movable layer is configured to move from the second position to the first position at a second rate that is faster than the first rate; and an adhesive layer comprising a different material than the insulating layer, the adhesive layer on at least a portion of the substrate or the movable layer, the adhesive layer configured to increase adhesion between the movable layer and the substrate when the movable layer is in the position of the first position and the second position that is closer to the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electromechanical device comprising:
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means for supporting a MEMS device, the supporting means comprising means for insulating; means for reflecting light, the light reflecting means mechanically coupled to the supporting means, the insulating means on a portion of the supporting means facing the reflecting means, the reflecting means movable between a first position and a second position with respect to the supporting means, wherein the reflecting means is configured to move from the first position to the second position at a first rate and wherein the reflecting means is configured to move from the second position to the first position at a second rate faster than the first rate; and means for increasing adhesion between the reflecting means and the supporting means when the reflecting means is in the position closer of the first position and the second position that is closer to the supporting means, the adhesion increasing means comprising a different material from the insulating means, the adhesion increasing means on at least a portion of the supporting means or the reflecting means. - View Dependent Claims (14)
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15. A method of manufacturing an electromechanical device comprising:
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providing a substrate including an insulating layer; forming a sacrificial layer on the substrate; forming a movable layer on the sacrificial layer, the insulating layer on a portion of the substrate facing the movable layer; forming an adhesive layer on at least a portion of the substrate or the movable layer, the adhesive layer different from the insulating layer; and removing the sacrificial layer, wherein the movable layer is movable between a first position and a second position, wherein the movable layer is configured to move from the first position to the second position at a first rate and wherein the movable layer is configured to move from the second position to the first position at a second rate that is faster than the first rate, the adhesive layer increasing adhesion between the movable layer and the substrate when the movable layer is in the position closer to the substrate. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification