Alignment layer orientation in raster scan thermally addressed smectic liquid crystal displays
US4585310A · kind A · utility
5Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1983 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Dec 12, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1337
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The orientation of the alignment layer in a raster-scanned thermally addressed smectic liquid crystal display device can be chosen relative to the writing orientation to accentuate a selected characteristic. A perpendicular alignment with respect to the scan direction produces uniformly written images in both scan directions to allow high quality bidirectional writing. In a preferred embodiment the liquid crystal cell includes a liquid crystal material comprising 4-octyloxy-4'-cyanobiphenyl 37.5%, 4-decyl-4'-cyanobiphenyl 36.8% weight percent and 4-undecyl-4'-cyanobiphenyl 25.7 weight percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.