Photoalignment agent of liquid crystal, photoalignment film of liquid crystal including the same, and liquid crystal display including the same
US8425799B2 · kind B2 · utility
0Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Feb 1, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a liquid crystal photoalignment agent that includes a compound selected from the group consisting of a polyamic acid having a predetermined chemical formula, a polyimide polymer having a predetermined chemical formula, and a combination thereof, and a polyimide photopolymer. The liquid crystal photoalignment agent shows a long life-span, stably maintains a pretilt angle, and shows improved after-image characteristics, liquid crystal alignment properties, and chemical resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.