Photosensitive polyimides for optical alignment of liquid crystals
US7005165B2 · kind B2 · utility
2Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Jul 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31725
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides novel polyamic acids and polyimide optical alignment layers for inducing alignment of a liquid crystal medium. The novel compositions comprise reactive diamines containing a C3–C20 linear or branched hydrocarbon chains containing 1 to 4 carbon—carbon double bonds. The invention further describes liquid crystal displays comprising the novel polyimide optical alignment layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.