Particle use for image display media, image display panel using the particles, and image display device
US7236291B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Apr 2, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image display device, in which image display media are sealed between opposed substrates, at least one of two substrates being transparent, and in which the image display media, to which an electrostatic field is applied, are made to move so as to display an image. A construction of particles used as the image display media is improved (the first, second, fourth, fifth, sixth, eighth and ninth aspects of the invention), and a material of the particles used as the image display media is improved (the third, seventh and tenth aspects of the invention). Whiteness of the particles and a liquid powder using the particles is improved, particle agglutination is prevented, and the charge property is controlled. Moreover, durability is improved such that a contrast of the image display during a repetition display is not decreased. As a result, an excellent image display can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.