Dual gate pixel reset for a display device
US9459445B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2014 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Jul 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Electrowetting elements of a display device include a support plate, a bottom electrode, electrowetting oil and an electrolyte on the bottom electrode. The electrowetting oil is immiscible with the electrolyte, a top electrode is in electrical contact with the electrolyte, and the bottom electrode, the top electrode and the electrolyte form a portion of a circuit. The electrowetting elements each further include a first thin film transistor (TFT) that is switched on to select each of the electrowetting elements using active matrix addressing, and a second TFT that is switched on to provide a reset pulse to the portion of the circuit. The reset pulse can be used to reduce or eliminate backflow of the electrowetting oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.