METHODS OF TUNING INTERFEROMETRIC MODULATOR DISPLAYS
First Claim
Patent Images
1. A method of tuning voltages for driving a microelectromechanical system (MEMS) array, the method comprising:
- applying at least one voltage to aMEMS element; and
while applying the voltage, adjusting a release and an actuation response time for the MEMS element.
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Accused Products
Abstract
A method of tuning interferometric modulator display driving is disclosed. In one embodiment, the method comprising applying at least one voltage to an interferometric modulator display element, and while applying the voltage, adjusting a release and an actuation response time for the interferometric modulator. In another embodiment, the release and actuation response time are adjusted by adjusting the bias voltage applied to the device. Determining how to adjust the bias voltage may be done by measuring the current response of the device.
101 Citations
51 Claims
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1. A method of tuning voltages for driving a microelectromechanical system (MEMS) array, the method comprising:
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applying at least one voltage to aMEMS element; and while applying the voltage, adjusting a release and an actuation response time for the MEMS element. - View Dependent Claims (2, 3, 4, 5)
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6. A method of tuning voltages for driving an interferometric modulator display, the method comprising:
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a) applying one or more bias voltages to one or more interferometric modulator display elements in the display, wherein the bias voltage maintains the one or more interferometric modulator display elements in one or more of an actuated and a released state; b) applying driving voltages to one or more interferometric modulator display elements in the display based on image data, wherein the driving voltages cause at least one interferometric modulator display element to change state between an actuated and released state; c) determining one or more values characteristic of response time for the at least one interferometric modulator display element change of state; and d) adjusting one or more of the bias voltage or driving voltages based on the values characteristic of response time. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. An interferometric modulator display, comprising:
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a plurality of interferometric modulator display elements; a driving module configured to apply one or more bias and driving voltages to one or more of the interferometric modulator display elements in response to image data; a current detector configure to measure current drawn by the one or more interferometric modulator display elements in response to the driving voltages; and a computation module configured to determine one or more values characteristic of response time for an interferometric modulator element change of state based on the current measured by the current detector. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An interferometric modulator display, comprising:
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means for interferometrically modulating light; means for applying one or more bias and driving voltages to the light-modulating means in response to image data; means for measuring current drawn by the light-modulating means in response to the driving voltages; and means for determining one or more values characteristic of response time for the light-modulating means'"'"' change of state based on the current measured by the current-measuring means. - View Dependent Claims (23, 24, 25, 26)
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27. A method of tuning voltages for driving an interferometric modulator display without changing interferometric modulator state, the method comprising:
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applying a bias voltage to one or more interferometric modulator display elements, wherein the bias voltage maintains the one or more interferometric modulator display elements in one or more of an actuated and a released state; determining one or more optical, mechanical, or electrical parameters characteristic of the value of the bias voltage relative to actuation and release voltages of the one or more interferometric modulator display elements, wherein said determining does not cause the one or more interferometric modulator display elements to change their state; comparing the one or more parameters with one or more reference parameters; and adjusting the bias voltage based on said comparing. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. An interferometric modulator display, comprising:
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a plurality of interferometric modulator display elements; a driving module configured to apply a bias voltage to the interferometric modulator display elements, wherein the bias voltage maintains the interferometric modulator display elements in one or more of an actuated and a released state; a voltage waveform generator configured to apply a voltage waveform superimposed on the bias voltage, wherein the voltage waveform does not cause the interferometric modulator display elements to change their state between an actuated and released state; a detector configured to determine one or more optical, mechanical, or electrical parameters in response to the application of the voltage waveform, wherein the parameters are characteristic of the value of the bias voltage relative to actuation and release voltages of the interferometric modulator display elements; a memory storing one or more reference values for the optical, mechanical, or electrical parameters; and a computation module configured to compare the determined optical, mechanical, or electrical parameters with the reference optical, mechanical, or electrical parameters and determine the bias voltage or an adjustment to the bias voltage relative to actuation and release voltages of the interferometric modulator display elements. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44)
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45. An interferometric modulator display, comprising:
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means for interferometrically modulating light; means for applying a bias voltage to the light-modulating means, wherein the bias voltage maintains the light-modulating means in one or more of an actuated and a released state; means for applying a voltage waveform superimposed on the bias voltage, wherein the voltage waveform does not cause the light-modulating means to change state between an actuated and released state; means for determining one or more optical, mechanical, or electrical parameters in response to the application of the voltage waveform, wherein the parameters are characteristic of the value of the bias voltage relative to actuation and release voltages of the light-modulating means; means for storing one or more reference values for the optical, mechanical, or electrical parameters; and means for comparing the determined optical, mechanical, or electrical parameters with the reference optical, mechanical, or electrical parameters and determining the bias voltage or an adjustment to the bias voltage relative to actuation and release voltages of the light-modulating means. - View Dependent Claims (46, 47, 48, 49, 50, 51)
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Specification