Process and materials for aligning liquid crystals and liquid crystal displays
US6143380A · kind A · utility
6Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Dec 20, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/0271
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a process for preparing an optical alignment layer for aligning liquid crystals and liquid crystal displays comprising exposing polyimide layers with polarized light. The invention further describes optical alignment layers, liquid crystal displays incorporating optical alignment layers and novel polymer compositions within the class of polyimide, polyamic acids and esters thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.