Liquid crystal device
US7053975B2 · kind B2 · utility
7Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2001 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Dec 7, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Liquid crystal devices are described that exhibit bistable, tri-stable or other multistable operation. The stable liquid crystal configurations are attained using a surface alignment grating (144) on the internal surface of at least one cell wall (142). The surface profile of the surface alignment grating comprises three or more defect sites per grating period and permit the liquid crystal molecules to adopt any one of two or more stable pretilt angles in the same azimuthal plane. Application of a suitable voltage causes the liquid crystal material to switch between the stable configurations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.