Image display medium and image display device using the image display medium
US6590696B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/167
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image display medium including a pair of electroconductive layers, at least one of which is light-transmissive and which are opposed each other to form a cell; and a dispersion contained in the cell, wherein the dispersion includes a colored particulate material having at least one of an acidic group and a basic group; a hydrocarbon solvent; a resin soluble in the hydrocarbon solvent and having at least one of a basic group and an acidic group; and a compound having a nonionic polar group, and wherein when the particulate material has an acidic group, the resin has a basic group, and when the particulate material has a basic group, the resin has an acidic group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.