Bistable nematic liquid crystal device
US6992741B2 · kind B2 · utility
4Cited by
13References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2002 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Mar 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13378
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A bistable nematic liquid crystal device includes an array of holes (8) in an alignment layer (6) on at least one cell wall (2). The alignment layer (6) induces a substantially planar local alignment of liquid crystal molecules. The holes (8) have a shape and/or orientation to induce the liquid crystal director adjacent the holes (8) to adopt two different tilt angles in substantially the same azimuthal direction. The arrangement is such that two stable liquid crystal molecular configurations can exist after suitable electrical signals have been applied to the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.