Electrical characterization of interferometric modulators
AssigneeIdc, LLC
InventorsWilliam Cummings, Brian Gally, Manish Kothari
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Abstract
Disclosed herein are methods and systems for testing the electrical characteristics of reflective displays, including interferometric modulator displays. In one embodiment, a controlled voltage is applied to conductive leads in the display and the resulting current is measured. The voltage may be controlled so as to ensure that interferometric modulators do not actuate during the resistance measurements. Also disclosed are methods for conditioning interferometric modulator display by applying a voltage waveform that causes actuation of interferometric modulators in the display.
Claims34
A method of testing an interferometric modulator display, comprising measuring resistance between at least two conductive leads in the display using a force voltage/measure current technique, wherein the conductive leads are used for driving display elements within the display and voltage applied during the force voltage/measure current technique is below a voltage required to actuate the display elements.
A method of measuring resistance between conductive leads in a MEMS display, comprising:
- applying a controlled voltage across at least two conductive leads in the display, wherein the conductive leads are used for driving display elements within the display;
- measuring current through the leads in response to the applied voltage;
- and
- determining resistance based on the measured current.
A method of testing an interferometric modulator display, comprising:
- applying a controlled voltage across at least two conductive leads in the display, wherein the conductive leads are used for driving interferometric modulators within the display;
- measuring current through the leads in response to the voltage;
- and
- identifying the display as having electrical characteristics desirable for use as a display based on said measuring.
A method of conditioning an interferometric modulator display, comprising applying, prior to use of said display, a voltage waveform to the display, wherein the voltage waveform has an amplitude high enough to actuate at least one interferometric modulator in the display, wherein the voltage waveform is such that it supplies a net zero charge to the interferometric modulators in the display.
A method of repairing a short in a display, comprising applying a voltage across at least two conductive leads through which a short has been measured, said voltage sufficient to actuate at least one display element through which said conductive leads pass.
Dependencies are inferred from the claim text.