Display device
US6025896A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1998 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Oct 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1681
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The display device, which is devoid of display defects and capable of being drived with low power, comprises a large number of microcapsules 10 in which disperse systems of charged particles 2 in a liquid dispersion medium 4 are encapsulated, and a pair of transparent electrodes 14 faced to each other disposed such that these microcapsules 10 is sandwiched therebetween. The diameters of the charged particles 2 are about 1/1000 to about 1/5 of the particle diameters of the microcapsules 10, and the charged particles 2 are dispersed such that the dispersion degree of the particle diamter distribution, expressed as volume-average particle diameter/number-average particle diameter, ranges from 1 to about 2, where the volume-average particle diameter indicates an average particle diameter derived from a volume-based particle diameter distribution and the number-average particle diameter indicates an average particle diameter derived from a number-based particle diameter distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.