MEMS apparatus having impact absorber
First Claim
1. A MEMS apparatus, comprising:
- a substrate;
a cover disposed on the substrate;
a movable mass disposed on the substrate; and
an impact absorber disposed on the cover, the impact absorber comprising;
a restraint;
a stationary stopper disposed on a lower surface of the cover;
a movable stopper;
an elastic element connecting the restraint and the movable stopper;
a supporting element connected between the restraint and the stationary stopper; and
a space disposed between the stationary stopper and the movable stopper.
1 Assignment
0 Petitions
Accused Products
Abstract
A MEMS apparatus includes a substrate, a cover disposed on the substrate, a movable mass disposed on the substrate, and an impact absorber disposed on the cover. The impact absorber includes a restraint, a stationary stopper disposed on a lower surface of the cover, a movable stopper, elastic elements connecting the restraint and the movable stopper, a supporting element connecting the restraint and the stationary stopper, and a space disposed between the stationary stopper and the movable stopper. The impact absorber is adapted to prevent the movable mass from impacting the cover. In addition, the supporting element may be made of an electrical insulation material to reduce electrostatic interaction between the movable mass and the movable stopper.
20 Citations
19 Claims
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1. A MEMS apparatus, comprising:
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a substrate; a cover disposed on the substrate; a movable mass disposed on the substrate; and an impact absorber disposed on the cover, the impact absorber comprising; a restraint; a stationary stopper disposed on a lower surface of the cover; a movable stopper; an elastic element connecting the restraint and the movable stopper; a supporting element connected between the restraint and the stationary stopper; and a space disposed between the stationary stopper and the movable stopper. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A MEMS apparatus, comprising:
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a substrate; a cover disposed on the substrate, comprising a first semiconductor layer; a second semiconductor layer; and an electrical insulation layer, wherein the electrical insulation layer is disposed between the first semiconductor layer and the second semiconductor layer; a movable mass disposed on the substrate; an impact absorber disposed on the cover, the impact absorber comprising; a restraint; a stationary stopper disposed on a lower surface of the cover; a movable stopper; an elastic element connecting the restraint and the movable stopper; a supporting element connecting the restraint and the stationary stopper; and a space disposed between the stationary stopper and the movable stopper; wherein the supporting element is made of the same material as that of the electrical insulation layer, and a thickness of the supporting element is substantially equal to a thickness of the electrical insulation layer. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification