Photoalignment film composition, optically anisotropic medium and method for preparing thereof
US7955665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2006 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Feb 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a photoalignment film composition containing a compound represented by general formula (1) and a compound having a hydrophilic group and a (meth)acryloyloxy group, an optically anisotropic medium using a photoalignment film comprised of the photoalignment film composition, and a method for preparing thereof:(wherein, R1 and R2 respectively and independently represent a hydrogen atom, halogen atom, carboxyl group or alkali metal salt thereof, halogenated methyl group, halogenated methoxy group, cyano group, nitro group, —OR5, hydroxylalkyl group having 1 to 4 carbon atoms, —CONR6R7 or methoxycarbonyl group, and R3 and R4 respectively and independently represent a carboxyl group or alkali metal salt thereof, sulfo group or alkali metal salt thereof, nitro group, amino group, carbamoyl group, alkoxycarbonyl group, sulfamoyl group or hydroxyl group).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.