ESD protection for MEMS display panels
First Claim
Patent Images
1. A display device comprising:
- a microelectromechanical system (MEMS) display portion comprising a plurality of MEMS display elements, each MEMS display element connected to at least one of a plurality of control inputs; and
a plurality of MEMS switches, each MEMS switch being configured to selectively connect at least one of the control inputs to a first potential in response to said control input reaching a second potential, wherein the MEMS display portion and the plurality of MEMS switches comprise a plurality of first and second layers, wherein each of the first layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements and each of the second layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements.
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Abstract
A MEMS (Microelectromechanical system) device is described. The device includes an array of MEMS elements with addressing lines and MEMS switches configured to selectively connect the addressing lines to a ground or other potential in the event of an over-voltage, such as during an ESD event. The arrangement is particularly advantageous for protecting the array, because the MEMS switches can be formed using substantially the same processing steps which are used to form the array.
48 Citations
42 Claims
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1. A display device comprising:
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a microelectromechanical system (MEMS) display portion comprising a plurality of MEMS display elements, each MEMS display element connected to at least one of a plurality of control inputs; and a plurality of MEMS switches, each MEMS switch being configured to selectively connect at least one of the control inputs to a first potential in response to said control input reaching a second potential, wherein the MEMS display portion and the plurality of MEMS switches comprise a plurality of first and second layers, wherein each of the first layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements and each of the second layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A display device comprising:
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means for displaying an image, the displaying means comprising a plurality of display elements, each display element connected to at least one of a plurality of control inputs; and a plurality of means for selectively connecting at least one of the control inputs to a first potential in response to said control input reaching a second potential, wherein the displaying means and the connecting means comprise a plurality of first and second layers, wherein each of the first layers forms a portion of one of the connecting means and a row or column of the displaying means and each of the second layers forms a portion of one of the connecting means and a row or column of the displaying means. - View Dependent Claims (11, 12, 13, 14)
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- 15. A method of connecting one or more row or column electrodes of an array to a first potential, the method comprising closing a MEMS switch in response to a voltage exceeding a threshold voltage on the row or column electrode, wherein the row or column electrode is connected to the first potential, and wherein the row and column electrodes and MEMS switch comprise first and second layers, the first layer forming a portion of the MEMS switch and a row or column electrode and the second layer forming a portion of the MEMS switch and a row or column electrode.
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20. A display device comprising:
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a display comprising a plurality of MEMS display elements comprising a plurality of first and second layers, each MEMS display element connected to one of a plurality of row electrodes and one of a plurality of column electrodes; a plurality of MEMS switches, each MEMS switch formed of a portion of the first and second layers and connected to a first potential and to a row electrode or a column electrode, wherein each MEMS switch is configured to connect the first potential to the row or column electrode when a voltage on the row or column electrode exceeds a first threshold. - View Dependent Claims (21)
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22. A display device comprising:
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a MEMS display portion comprising a plurality of MEMS display elements, each MEMS display element having a first actuation threshold; a plurality of MEMS switches connected to the display portion, each MEMS switch having a second actuation threshold, wherein the second actuation threshold is higher than the first actuation threshold, wherein the MEMS display portion and the plurality of MEMS switches comprise a plurality of first and second layers, wherein each of the first layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements and each of the second layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A display device comprising:
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means for displaying comprising a plurality of display elements, each display element having a first actuation threshold; and means for selectively connecting the displaying means to one or more electrodes, the connecting means comprising a plurality of connecting elements, each connecting element having a second actuation threshold, wherein the second actuation threshold is higher than the first actuation threshold, wherein the displaying means and the connecting means comprise a plurality of first and second layers, wherein each of the first layers forms a portion of one of the connecting means and a row or column of the displaying means and each of the second layers forms a portion of one of the connecting means and a row or column of the displaying means. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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38. A method of manufacturing a display device, the method comprising:
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forming a MEMS display portion comprising a plurality of MEMS display elements, each MEMS display element having a first actuation threshold; and forming a plurality of MEMS switches connected to the display portion, each MEMS switch having a second actuation threshold, wherein the second actuation threshold is higher than the first actuation threshold, wherein forming the display portion and the MEMS switches comprises forming a plurality of first and second layers, wherein each of the first layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements and each of the second layers forms a portion of one of the MEMS switches and a row or column of the MEMS display elements. - View Dependent Claims (39, 40, 41, 42)
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Specification