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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Bibliographic Details
Main Authors PAOLINI, JR., Richard J, BISHOP, Seth J
Format Patent
LanguageEnglish
Published 19.08.2021
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
CRYPTOGRAPHY
DISPLAY
EDUCATION
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PHYSICS
SEALS
TRANSPORTING
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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.
Bibliography:Application Number: US202117179439