Materials for inducing alignment in liquid crystals and liquid crystal displays
US6242061A · kind A · utility
11Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Dec 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides novel polyimide, polyamic acids and esters thereof, and optical alignment layers derived therefrom, for inducing alignment of liquid crystals and liquid crystal displays. The novel compositions comprise side chain polymers of the general formula I EQU --L.sub.1 --D--L.sub.2 --C.sub.f I wherein D comprises 1 to 4 carbon-carbon double bonds, C.sub.f is a monovalent C.sub.4 to C.sub.20 fluorocarbon radical and L.sub.1 and L.sub.2 are linking groups. The invention further describes liquid crystal displays and other liquid crystal devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.