Shutter mode microencapsulated electrophoretic display
US6172798A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2000 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophoretic display element includes a capsule having a first, larger surface and a second, smaller surface. The capsule contains a suspending fluid and at least one particle dispersed within said suspending fluid. Application of a first electrical field causes the particle or particles to migrate towards the first, larger surface of the capsule, causing it to take on the visual appearance of the particles. Application of a second electrical field causes the particle or particles to migrate towards the second, smaller surface, allowing the capsule to take on the visual appearance of the dispersing fluid or of a substrate or electrode positioned behind the display element. Displays may be fabricated from multiple display elements arranged on a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.