Switchable glazing unit
US11397344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2017 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Sep 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A switchable glazing unit comprising a glazing panel spaced apart from a pane of glazing material by a perimeter seal is described. The glazing panel comprises first and second glass sheets. A first electrode layer is on a first major surface of the first glass sheet and a second electrode layer is on a first major surface of the second glass sheet. A layer of liquid crystal material is between the first electrode layer and the second electrode layer. When no voltage is applied to the first and second electrode layers, the liquid crystal layer has a first opacity, and upon applying a suitable voltage between the first and second electrode layers, the liquid crystal layer has a second opacity different to the first opacity. Methods of making such a switchable glazing unit are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.