SPD films and light valves comprising same
US6416827B1 · kind B1 · utility
93Cited by
12References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Dec 11, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/05
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A film suitable for use as the light-modulating unit of an SPD light valve, the film comprising a cross-linked polymer matrix and having droplets of a liquid light valve suspension distributed in the cross-linked polymer matrix, the liquid light valve suspension comprising particles suspended in a liquid suspending medium, wherein the matrix and the droplets each have a refractive index within a range of from about 1.455 to 1.463 and wherein the refractive index of the droplet and the matrix components of the film are preferably matched as closely as possible within RI 0.005 of each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.