System and method for addressing a MEMS display
First Claim
Patent Images
1. A light modulator comprising:
- an array of elements at least some of which have different values of deflection versus addressing pulse width; and
addressing circuitry configured to provide addressing pulses of varying width to the array of elements such that different combinations of elements switch in a selectable manner, depending upon the width of the addressing pulses.
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Abstract
A system and method for addressing an array of MEMS display elements, such as interferometric modulators, from a drive control. A display includes groups of display elements that are addressed with a commonly applied drive signal. In one embodiment, the groups of display elements are configured to have different response times and are driven by pulses of varying length indicative of those response times. In another embodiment, the groups of display elements are configured to have different actuation voltages and are driven by pulses of varying voltage indicative of those actuation voltages.
175 Citations
39 Claims
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1. A light modulator comprising:
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an array of elements at least some of which have different values of deflection versus addressing pulse width; and
addressing circuitry configured to provide addressing pulses of varying width to the array of elements such that different combinations of elements switch in a selectable manner, depending upon the width of the addressing pulses. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A light modulator comprising:
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an array of elements having differing values of deflection versus applied voltage; and
addressing circuitry configured to provide addressing pulses of varying voltage level to the array of elements such that different combinations of elements switch in a selectable manner, depending upon the voltage level of the addressing pulses. - View Dependent Claims (8, 9, 10)
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11. A display comprising:
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a plurality of MEMS elements arranged in rows, wherein the MEMS elements of each of the rows are further arranged in subrows and wherein the subrows of each row are electrically connected; and
a plurality of resistors, each of the resistors connected to a respective one of the subrows, the respective one of the resistors for each of the subrows of each row having a different resistance from the resistors connected to the other subrows of the row. - View Dependent Claims (12)
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13. A method of addressing a plurality of display elements having at least a first and second display element and characterized by respective response thresholds, the method comprising:
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generating a first pulse characterized by a parameter having a value greater than the response threshold of the first display element and less than the response threshold of the second display element; and
applying the first pulse to the plurality of display elements. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A driver circuit for addressing a plurality of display elements having at least a first and second display element and characterized by respective response thresholds, the driver circuit comprising:
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means for generating a first pulse characterized by a parameter having a value greater than the response threshold of the first display element and less than the response threshold of the second display element; and
means for applying the first pulse to the plurality of display elements. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification