Apparatus and method for reducing slippage between structures in an interferometric modulator
First Claim
1. An electromechanical systems device, comprising:
- a substrate layer comprising a first reflective surface formed on a transparent substrate, the first reflective surface being partially transmissive;
a movable layer comprising a second reflective surface, the second reflective surface being spaced from the first reflective surface, the first reflective surface and the second reflective surface defining a cavity therebetween;
a support structure positioned at a side of the cavity and configured to separate at least a portion of the substrate layer from at least a portion of the movable layer; and
a roughened interface configured to increase adhesion between the support structure and the movable layer, the roughened interface comprisingan etched surface of the support structure, anda surface of the movable layer connected to the etched surface of the support structure.
3 Assignments
0 Petitions
Accused Products
Abstract
A support structure within an interferometric modulator device may contact various other structures within the device. Increased bond strengths between the support structure and the other structures may be achieved in various ways, such as by providing roughened surfaces and/or adhesive materials at the interfaces between the support structures and the other structures. In an embodiment, increased adhesion is achieved between a support structure and a substrate layer. In another embodiment, increased adhesion is achieved between a support structure and a moveable layer. Increased adhesion may reduce undesirable slippage between the support structures and the other structures to which they are attached within the interferometric modulator.
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Citations
31 Claims
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1. An electromechanical systems device, comprising:
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a substrate layer comprising a first reflective surface formed on a transparent substrate, the first reflective surface being partially transmissive; a movable layer comprising a second reflective surface, the second reflective surface being spaced from the first reflective surface, the first reflective surface and the second reflective surface defining a cavity therebetween; a support structure positioned at a side of the cavity and configured to separate at least a portion of the substrate layer from at least a portion of the movable layer; and a roughened interface configured to increase adhesion between the support structure and the movable layer, the roughened interface comprising an etched surface of the support structure, and a surface of the movable layer connected to the etched surface of the support structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electromechanical device comprising:
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first means for reflecting light, the first reflecting means being partially transmissive; second means for reflecting light, the second reflecting means being movable and spaced apart from the first reflecting means; means for supporting the first reflecting means over the second reflecting means; and means for bonding the support means to at least one of the first reflecting means and the second reflecting means, the bonding means comprising an etched roughened surface of the support means, the etched roughened surface being configured to increase adhesion between the supporting means and at least one of the first reflecting means and the second reflecting means. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 24)
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23. An electromechanical device comprising:
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first means for reflecting light, the first reflecting means being partially transmissive; second means for reflecting light, the second reflecting means being movable and spaced apart from the first reflecting means; means for supporting the first reflecting means over the second reflecting means; and means for bonding the support means to at least one of the first reflecting means and the second reflecting means, the bonding means being configured to increase adhesion between the supporting means and at least one of the first reflecting means and the second reflecting means, wherein the bonding means comprises a roughened surface of the second reflecting means.
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25. An electromechanical device comprising:
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a substrate layer comprising a first reflective surface formed on a transparent substrate, the first reflective surface being partially transmissive, the substrate layer comprising at least one etched roughened surface; a movable layer comprising a second reflective surface, the first reflective surface and the second reflective surface defining a cavity therebetween; a support structure positioned at a side of the cavity and disposed on the at least one etched roughened surface of the substrate layer, the support structure configured to separate at least a portion of the substrate layer from at least a portion of the movable layer. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification