Electrically controllable device having variable diffusion by liquid crystals, and method for same
US11598986B2 · kind B2 · utility
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3References
21Claims
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Key dates
| Filing date | Sep 27, 2019 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Feb 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13787
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device having scattering which can be varied by liquid crystals includes a stack with a first electrode, an electroactive layer with the liquid crystals being stabilized by the polymeric network, a second electrode. The material exhibits, starting from a temperature referred to as T1, a mesophase referred to as P. At a temperature T′ greater than or equal to T1, the stack is capable of exhibiting at least three variable scattering states, which are stable and reversible, in the visible region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.