Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element
US6946169B1 · kind B1 · utility
6Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1998 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Dec 8, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.