Liquid-crystal alignment film
US6001277A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jul 16, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Related to a liquid-crystal alignment film that can align liquid-crystal molecules without resort to the rubbing. The liquid-crystal alignment film of the present invention comprises a resin (e.g., a polyimide) containing a photoisomerizable and dichroic structural unit (e.g., a stilbene derivative), and is furnished with the ability to align liquid-crystal molecules when a film formed of the resin is irradiated with linearly polarized light; the ability to align liquid-crystal molecules being held and fixed. The liquid-crystal alignment film of the present invention is used in electric-filed driven type liquid-crystal display devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.