Treating method for aligning liquid crystal molecules and liquid crystal display device
US5607732A · kind A · utility
20Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Sep 18, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/027
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A treating method for aligning liquid crystal molecules, which comprises forming on a substrate a polyimide film represented by a repeating unit of the formula (I): ##STR1## wherein R is a bivalent organic group, irradiating the film with ultraviolet rays having a spatial distribution of irradiation intensity through a mask, immersing it in a developing liquid and then in a rinsing liquid to form periodical concaves and convexes on the surface of the polyimide film, and aligning liquid crystal molecules on the concave-convex surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.