Electrically controllable device having an electroactive layer containing liquid crystals and a polymeric barrier between the electroactive layer and an electrode
US11294251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Jul 25, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13775
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device having a scattering which can be varied by liquid crystals includes a first electrode, an electroactive layer and a second electrode. It includes, between the first electrode and the electroactive layer, a first transparent polymeric barrier layer with a thickness of T1 and optionally, between the second electrode and the electroactive layer, a second transparent polymeric barrier layer with a thickness of T2, T1 being nonzero and at least 1 μm, and T1+T2 being at most 40 μm. The first polymeric barrier layer carries the first electrode or the first electrode is on a first dielectric substrate. The second optional polymeric barrier layer carries the second electrode or the second electrode is on a second dielectric substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.