Display device and its driving and manufacturing methods
US6894676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/372
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
At least two regions having different colors and electrical characteristics are defined in a rotatable particle. The rotatable particle receives a rotation moment from an external electric field reaction. A base holds rotatably each rotatable particle. An electric field generating unit generates only during a certain electric field generating period an electric field in a spatial area where the rotatable particle is disposed. The intensity of the electric field is monotonously lowered during at least one third of the certain electric field generating period on a backward side of the period. It is possible to reduce a variation in a rotation operation and display a high quality image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.