Polymer blend for preparing liquid crystal alignment layer
US6731362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2001 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Jun 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a polymer blend of cinnamate polymer and polyimide polymer, which are photo-reactive polymers, for preparing liquid crystal alignment layer having a high pretilt angle in photo-alignment, a process for preparing liquid crystal alignment layer by employing the said blend, a liquid crystal alignment layer prepared by the process, and a crystal cell prepared by employing the liquid crystal alignment layer. The polymer blend for preparing liquid crystal alignment layer of the invention comprises 10 to 90% (w/w) of cinnamate polymer and 10 to 90% (w/w) of polyimide polymer. Since the liquid crystal alignment layer prepared by employing the polymer blend of the invention has an excellent alignment property and thermal stability, which makes possible its wide application in the development of liquid crystal displays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.