System and method for protecting microelectromechanical systems array using back-plate with non-flat portion
First Claim
Patent Images
1. An electronic device, comprising:
- a substrate comprising a first surface and a second surface;
an array of microelectromechanical devices formed on the first surface of the substrate, wherein the microelectromechanical devices are configured to operate an optical processing with light incident to the second surface;
a back-plate placed over the array and having an interior surface and an exterior surface, the interior surface of the back-plate facing the array with a gap therebetween, the exterior surface facing away from the substrate, wherein the back-plate is configured so as not to transmit light involving the optical processing of the microelectromechanical devices; and
wherein the interior surface is substantially parallel to the second surface of the substrate, and wherein the exterior surface is curved.
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Abstract
Disclosed is an electronic device utilizing interferometric modulation and a package of the device. The packaged device includes a substrate, an interferometric modulation display array formed on the substrate, and a back-plate. The back-plate is placed over the display array with a gap between the back-plate and the display array. The depth of the gap may vary across the back-plate. The back-plate can be curved or have a recess on its interior surface facing the display array. Thickness of the back-plate may vary. The device may include reinforcing structures which are integrated with the back-plate.
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Citations
27 Claims
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1. An electronic device, comprising:
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a substrate comprising a first surface and a second surface; an array of microelectromechanical devices formed on the first surface of the substrate, wherein the microelectromechanical devices are configured to operate an optical processing with light incident to the second surface; a back-plate placed over the array and having an interior surface and an exterior surface, the interior surface of the back-plate facing the array with a gap therebetween, the exterior surface facing away from the substrate, wherein the back-plate is configured so as not to transmit light involving the optical processing of the microelectromechanical devices; and wherein the interior surface is substantially parallel to the second surface of the substrate, and wherein the exterior surface is curved. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic device, comprising:
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a substrate comprising a first surface and a second surface; an array of interferometric modulators formed on the first surface of the substrate, wherein the interferometric modulators are configured to operate an optical processing with light incident to the second surface; means for covering the array, wherein said means comprises an interior surface and an exterior surface, the interior surface facing the array with a gap therebetween, the exterior surface facing away from the substrate, wherein the covering means is configured so as not to transmit light involving the optical processing of the interferometric modulators; and wherein the interior surface of the covering means is substantially parallel to the second surface of the substrate, and wherein the exterior surface is curved. - View Dependent Claims (12, 13, 14, 15)
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16. A method of making an electronic device, comprising:
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providing an intermediate device comprising a substrate, wherein the substrate comprises a first surface and a second surface, the intermediate device further comprising an array of microelectromechanical devices formed on the first surface of the substrate, wherein the microelectromechanical devices are configured to operate an optical processing with light incident to the second surface; and forming a back-plate over the array of the intermediate device, the back-plate having an interior surface and an exterior surface, the interior surface facing the array with a gap therebetween, the exterior surface facing away from the substrate, wherein the back-plate is configured so as not to transmit light involving the optical processing of the microelectromechanical devices, wherein the interior surface is substantially parallel to the second surface of the substrate, and wherein the exterior surface is curved. - View Dependent Claims (17, 18, 19, 20, 21, 22, 24, 25, 26, 27)
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23. An electronic device produced by a method comprising:
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providing an intermediate device comprising a substrate, wherein the substrate comprises a first surface and a second surface, and wherein the intermediate device further comprises an array of microelectromechanical devices formed on the first surface of the substrate, wherein the microelectromechanical devices are configured to operate an optical processing with light incident to the second surface; and forming a back-plate over the array of the intermediate device with a gap between the back-plate and the array, the back-plate having an interior surface facing the array and an exterior surface facing away from the array, wherein the back-plate is configured so as not to transmit light involving the optical processing of the microelectromechanical devices, and wherein the interior surface of the back-plate is substantially parallel to the second surface of the substrate, and wherein the exterior surface is curved.
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Specification