Polyimides for anchoring liquid crystals, display devices including same and method for the preparation of said devices
US7022809B2 · kind B2 · utility
6Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2002 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | May 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to novel polyimides derived from 6FDA and from 3,3-dihydroxy-4,4′-diaminobiphenyl and novel polyimides derived from PMDA and from Bis-AP-AF, having alkyl, arylalkyl, heteroarylalkyl, (cycloalkyl)alkyl, fluoroalkyl or siloxane side groups.The present invention also relates to a method of producing nematic liquid-crystal devices, which comprises the steps consisting in:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.