Adaptive gate driving for high frequency AC driving of EWoD arrays
US11410620B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 18, 2021 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Feb 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0252
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of 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 grouping gate lines and simultaneously driving those gate lines as a gate block, a frame update can be completed much faster and, as a consequence, the overall drive frequency at the propulsion electrodes can be increased substantially. 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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