Method and system for making a micromachine device with a gas permeable enclosure
First Claim
1. A method for coating a micro-electromechanical system device, the method comprising:
- mounting the device on a substrate, the substrate including an aperture having a first opening proximate to the device and a second opening connected to the first opening;
applying a vacuum to the second opening; and
applying a coating material over the device;
wherein the vacuum aids in the homogeneous distribution of the coating material on the device by drawing a portion of the coating material over the device and towards the first opening.
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Accused Products
Abstract
A method for coating a micro-electromechanical system (MEMS) device is provided. A coating material, such as a ceramic slurry, may be utilized to form a gas permeable enclosure or shell around the device after the coating material hardens. A vacuum may be applied near the device to exert an attractive force on the coating material to aid in homogenously distributing the coating material over the device. In addition, a vibration may be applied to the device to aid in distributing the coating material. If the device is attached to a substrate, a hole may be formed through the substrate with one opening near the device and a second opening located elsewhere. The vacuum may then be applied to the second opening to draw the coating material over the device and towards the first opening.
25 Citations
21 Claims
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1. A method for coating a micro-electromechanical system device, the method comprising:
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mounting the device on a substrate, the substrate including an aperture having a first opening proximate to the device and a second opening connected to the first opening;
applying a vacuum to the second opening; and
applying a coating material over the device;
wherein the vacuum aids in the homogeneous distribution of the coating material on the device by drawing a portion of the coating material over the device and towards the first opening. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for applying a coating layer to a micro-electromechanical system device, the method comprising:
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applying a vacuum proximate to the device;
applying a vibration to the device; and
pouring a coating material over the device, whereby the vacuum and the vibration provide a homogenous distribution of the coating material over the device. - View Dependent Claims (9, 10, 11, 12, 14, 15, 16, 19, 20, 21)
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13. A method for increasing adhesion between a micro-electromechanical system device and a gas-permeable outer layer, the method comprising:
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applying a gas-permeable inner layer to the device, the inner layer having a high level of adherence to the device; and
applying the outer layer over the inner layer, the outer layer having a lower level of adhesion to the device than the inner layer.
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17. A method for hermetically sealing a micro-electromechanical system device having a gas-permeable exterior coating, the method including:
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providing an attractive material operable to attract gas molecules, the attractive material positioned proximate to the device; and
depositing a sealing layer over the device and the attractive material, the sealing layer operable to seal a plurality of pores present in the gas-permeable exterior coating, and the attractive material operable to attract gas molecules trapped inside the device after the sealing layer is deposited.
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18. A micro-electromechanical system device, the device comprising:
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an inner core;
a sacrificial layer surrounding the core;
a shell surrounding the sacrificial layer and including a first gas-permeable protective layer surrounding the shell;
so that the sacrificial layer can be etched through the first protective layer to allow the core to move within the shell.
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Specification