Liquid crystal alignment structures and optical devices containing same
US6524665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2002 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Apr 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133726
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An alignment structure useful in a liquid crystal display device comprising a substrate having disposed thereon an oriented film of a lyotropic nematic liquid crystalline material. Particularly useful lyotropic materials include a class of nematic liquid crystalline compounds known as chromonics. The substrates can be made by coating the lyotropic liquid crystal material onto the substrate to provide an oriented film of the lyotropic material. The alignment structure can also include one or more polarizing dyes or other additives and can thus be made to perform polarizing, retarding and/or color filtering functions in addition to alignment and orientation functions. Optical devices containing such alignment structures and methods of making such devices are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.