Electro-wetting displays
US7420549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Jun 26, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0221
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The performance of electro-wetting displays can be improved by: (a) providing a concealment member (112) which conceals the moving fluid (108) when that fluid (108) is confined to a small area; (b) using the moving fluid to cover one or more sections of a filter or reflector having differently-colored sections; (c) moving the moving fluid between the rear surface and a side surface of a microcell; (d) using as a substrate for a moving fluid a substrate resistant to wetting by the fluid but pierced by multiple conductive vias capped with a material wetted by the fluid; and (e) coloring the moving fluid with pigments or nanoparticles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.