Process for aligning liquid-crystalline polymers
US5227115A · kind A · utility
20Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Mar 5, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/91
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for aligning a layer of a liquid-crystalline, polymeric material in which a gas or liquid stream is passed over the liquid-crystalline, polymeric material, preferably for aligning main-chain polymers which have a nematic phase by passing a hot stream of air onto the material. Electrooptical displays which contain an alignment layer of this type have high contrast. The alignment layers have advantages over conventional rubbed alignment layers since, for example, no electrostatic charging takes place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.