Micro mirror array
First Claim
Patent Images
1. A micro mirror array comprising:
- an upper wafer including a plurality of movable reflective surfaces located thereon; and
a lower wafer located below and coupled to said upper wafer, said lower wafer having an upper surface including a plurality of electrodes located thereon for controlling the movement of said movable reflective surfaces when a voltage is applied thereto, said lower wafer including control electronics generally spaced away from said upper surface and coupled to said electrodes for controlling the voltages applied to said electrodes.
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Abstract
A micro mirror array including an upper wafer having a plurality of movable reflective surfaces located thereon and a lower wafer located below and coupled to the upper wafer. The lower wafer has an upper surface including a plurality of electrodes located thereon for controlling the movement of the movable reflective surfaces when a voltage is applied thereto. The lower wafer further includes control electronics generally spaced away from the upper surface and coupled to the electrodes for controlling the voltages applied to the electrodes.
27 Citations
38 Claims
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1. A micro mirror array comprising:
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an upper wafer including a plurality of movable reflective surfaces located thereon; and
a lower wafer located below and coupled to said upper wafer, said lower wafer having an upper surface including a plurality of electrodes located thereon for controlling the movement of said movable reflective surfaces when a voltage is applied thereto, said lower wafer including control electronics generally spaced away from said upper surface and coupled to said electrodes for controlling the voltages applied to said electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A micro mirror array comprising:
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an upper wafer including a base portion and a plurality of movable portions rotatably coupled to said base portion, each of said movable portions having a reflective surface located thereon; and
a lower wafer located below and coupled to said upper wafer, said lower wafer including a plurality of electrodes, each electrode being located adjacent to one of said movable portions such that a voltage can be applied to said electrodes to cause an associated one of the movable portions to move, said lower wafer including control electronics integrated therein and electrically coupled to said electrodes.
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18. A method for manufacturing a micro mirror array comprising the steps of:
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providing an upper wafer including a support layer and a mirror-receiving surface located over said support layer;
providing a lower wafer including a plurality of electrodes and control electronics coupled to said electrodes for controlling a voltage applied to said electrodes;
coupling said upper wafer to said lower wafer;
removing said support layer to expose said mirror-receiving surface; and
depositing a reflective material on said mirror-receiving surface to form a plurality of mirrors, each mirror being located above an associated electrode on said lower wafer. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method for manufacturing a micro mirror array comprising the steps of:
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providing an upper wafer including a mirror-receiving surface;
providing a lower wafer including a plurality of electrodes and control electronics coupled to said electrodes for controlling a voltage applied to said electrodes;
coupling said upper wafer to said lower wafer; and
etching said mirror-receiving surface to form a base portion and a plurality of movable portions coupled to said base portion, and wherein each movable portion is located over one of said electrodes.
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37. A micro mirror array comprising:
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a wafer including a base and a plurality of movable portions, each movable portion having a reflective surface located thereon and being coupled to said base by at least one arm such that each movable portion can rotate about the associated at least one arm, each arm having a piezoresistor located thereon to detect any rotation of the associated movable portion relative to said base; and
a plurality of electrodes located adjacent to said reflective surfaces for controlling the movement of said movable reflective surfaces when a voltage is applied to said electrodes - View Dependent Claims (38)
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Specification