Materials for inducing alignment in liquid crystals and liquid crystal displays
US6194039A · kind A · utility
8Cited by
15References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Oct 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides novel polyimides, poly(amic acids) and poly(amide 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 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.