Hybrid polymer materials for liquid crystal alignment layers
US8362151B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2009 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jun 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides novel hybrid polymer useful for alignment layers for inducing alignment of a liquid crystal medium. Hybrid polymers of this invention are prepared from a) at least one component selected from the group consisting of oligomer(s) and polymer(s) within the class of polyimides, poly(amic acids) and esters thereof wherein the at least one component comprises at least one initiator generating moiety, and b) at least one component selected from the group consisting of addition monomer(s) and addition polymer(s), wherein the two components are covalently bonded to form a copolymer. The invention further describes liquid crystal elements such as all liquid crystal display products or modes, liquid crystal devices and liquid crystal optical films comprising the novel hybrid polymer alignment layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.