LATCHED TRANSISTOR DRIVING FOR HIGH FREQUENCY AC DRIVING OF EWOD ARRAYS
Methods and systems for driving an active matrix electrowetting on dielectric device including thin-film-transistors to increase the switching frequency of the propulsion electrodes beyond what is typical for line-by-line active matrix driving. By using a latching circuit, it is possible to selectiv...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
19.08.2021
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Subjects | |
Online Access | Get full text |
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Summary: | Methods and systems for driving an active matrix electrowetting on dielectric device including thin-film-transistors to increase the switching frequency of the propulsion electrodes beyond what is typical for line-by-line active matrix driving. By using a latching circuit, it is possible to selectively switch specific propulsion (pixel) electrodes between an "on" and an "off" state, wherein a propulsion electrode in an "on" state can be driven by a time varying drive voltage on the top electrode that is a much higher frequency than is typically possible with amorphous silicon thin-film-transistor arrays. The faster drive frequency improves the performance of electrowetting devices, especially when used with aqueous droplets having a high ionic strength. |
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Bibliography: | Application Number: US202117179439 |