Liquid crystal alignment layer with sidechains controlling tilt angle
US4838658A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Oct 13, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133711
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal cell is disclosed in which the cell walls facing the liquid crystal material are provided with alignment layers of organic material. This material consists of polymer chains with side chains. The ends of the side chains interact with the liquid crystal molecules. The side chains are shorter than the liquid crystal molecules. By suitable choice of the length of the side chains, the tilt angle can be set. It is also possible to provide alternately different side chains one of which interacts with one end of the liquid crystal molecule, while the neighboring side chain interacts with the other end of the same molecule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.