Bistable cholesteric liquid crystal switchable window
US10871694B2 · kind B2 · utility
1Cited by
3References
20Claims
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Key dates
| Filing date | Sep 11, 2017 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Sep 11, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2464
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A bistable cholesteric liquid crystal switchable window has two stable states in the absence of an applied voltage. A first stable state is a planar state which is transparent or reflective for visible light. A second stable state is a focal conic state which is opaque for visible light. The window can be switched from the first stable state to the second stable state via a first voltage pulse and from the second stable state to the first stable state via a second voltage pulse. The first voltage pulse and the second voltage pulse may have the same frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.