Electrowetting display device with stable display states
US10018828B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Jul 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electrowetting display device comprising a first fluid; a second fluid immiscible with the first fluid; a first support plate having: a surface adjoined by at least one of the first or second fluids, and a first electrode. The device further comprises a second support plate; a second electrode in electrical contact with the second fluid; and a third electrode. The device comprises a protrusion formed as part of at least one of the first support plate or the second support plate. The protrusion has an elongate shape extending from one to the other of the first or second support plates. The protrusion comprises a protrusion surface formed of a material which, without a voltage applied, is less wettable for the first fluid than the surface of the first support plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.