Electrophoretic liquid and display device using electrophoretic liquid
US8441713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2009 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophoretic liquid is disclosed that includes first particles that have the property of scattering light over an entire visible range and are positively or negatively charged; second particles that have the property of absorbing light of a specific wavelength range in the visible range and scattering light of ranges other than the specific wavelength range and are charged to a polarity opposite to that of the first particles; and a dispersion medium that has the property of allowing the light of the specific wavelength range absorbed by the second particles to pass through and absorbing the light of the ranges other than the specific wavelength range. In the electrophoretic liquid, the first particles and the second particles are dispersed in the dispersion medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.