Photo-alignment materials for liquid crystal alignment film
US6569972B1 · kind B1 · utility
6Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Jul 30, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A photo-alignment material useful in liquid crystal alignment films comprises a maleimide-based repeating unit and at least one additional repeating unit, or a maleimide-based repeating unit and at least two additional repeating units. The photo-alignment materials have freely-controllable pretilt angles, and they provide a display quality equivalent or superior to alignment materials made using the conventional rubbing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.