Method of making a liquid crystal alignment layer
US7214405B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2003 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Sep 3, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/1135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of making a liquid crystal alignment layer comprising the steps of: (i) providing a layer on a substrate, the layer comprising a polythiophene according to formula (I):wherein R1 and R2 each independently represent hydrogen or a C1–C4 alkyl group or together represent a C1–C4 alkylene group or a cycloalkylene group; and (ii) mechanically rendering the layer liquid crystal aligning; a liquid crystal alignment layer obtainable by the above-mentioned method; a liquid crystal device incorporating the above-mentioned liquid crystal alignment layer; a liquid crystal display comprising the above-mentioned liquid crystal alignment layer or the above-mentioned liquid crystal device; and the use of the polythiophene according to formula (I) for aligning liquid crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.