Polymeric dispersed liquid crystal light shutter device
US7837897B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Jun 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/68
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polymer dispersed liquid crystal light shutter device and method for use of the same are disclosed. First and second substrates are disposed substantially parallel. A polymer binder system is interposed between the first and second substrates and a plurality of liquid crystals are dispersed in the polymer binder system. The liquid crystal shutter device is able to switch between a high light absorbing dark state and a low light absorbing transparent state, and visa versa, with a low driving voltage. The liquid crystal shutter device includes formulations of liquid crystal mixtures having nematic liquid crystals and polymer systems to provide a wide viewing angle, low driving voltage, high contrast ratio, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.