Additive particles for improving optical performance of an electrophoretic display
US9778537B2 · kind B2 · utility
27Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2016 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Jan 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1678
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is directed to an electrophoretic fluid which comprises additive particles. The concentration of the additive particles in the electrophoretic fluid is 2.5% to 25% by weight and the additive particles are not seen at the viewing side during operation of the display. The resulting fluid can improve optical performance of a display device, such as image stability and contrast ratio. The present invention is also directed to an electrophoretic display comprising the electrophoretic fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.