Making liquid suspension type light valve film
US5409734A · kind A · utility
69Cited by
35References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1993 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Jan 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/172
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A film for a light valve is made by phase separation of a mixture comprising a homogeneous polymeric solution and a liquid suspension of light-polarizing particles. Uniform liquid-suspension droplets in a polymeric matrix are formed by phase separation processing, e.g., by polymerization or solvent evaporation. Such simple, one-step processing results in cost reduction in display and window applications. Sealing problems of conventional light valves are alleviated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.