Light valve containing ultrafine particles
US5650872A · kind A · utility
106Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Jan 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/022
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electro-optical device, such as a light valve, has a cell formed of opposed cell walls, a light-modulating unit comprising a suspension containing anisometric particles suspended in a liquid suspending medium between the cell walls, and opposed electrodes operatively associated with the cell walls for applying an electrical field across the suspension, the anisometrically shaped particles having an average particle size of about 0.1 microns or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.