Photoalignment polyimide copolymer and liquid crystal alignment layer
US9791745B2 · kind B2 · utility
3Cited by
1References
10Claims
0Family size
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Key dates
| Filing date | Aug 26, 2013 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Feb 26, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/027
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed therein are a photoalignment polyimide copolymer making it easier to form a liquid crystal alignment layer with excellences in alignment properties, thermal and structural stabilities, and adhesiveness to a substrate, and a liquid crystal alignment layer using the same. The photoalignment polyimide copolymer includes all the three types of repeating units each having a defined structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.