Liquid crystal cell utilizing a ferroelectric liquid crystal having a natural pitch length is no longer than the longest wavelength of visible light
US4852978A · kind A · utility
15Cited by
4References
8Claims
0Family size
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Key dates
| Filing date | Jun 23, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Jun 23, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13756
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Bistable switching between clear and scattering states is provided by a liquid crystal cell whose liquid crystal layer is constituted by a random orientation planar aligned ferroelectric smectic exhibiting a pitch length comparable with the wavelength of visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.