Materials for inducing alignment in liquid crystals and liquid crystal displays
US6713135B2 · kind B2 · utility
4Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Dec 19, 2020 |
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—L1—D—L2—Cfwherein D comprises 1 to 4 carbon-carbon double bonds, Cf is a monovalent C4 to C20 fluorocarbon radical and L1 and L2 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.