Cinnamate-containing photopolymer for orientation film of liquid crystal display (LCD) and method of forming the orientation film using the photopolymer
US5998101A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides novel photopolymers for use in liquid crystal display. The photopolymers are cinnamate-containing photopolymers wherein a mesogen, preferably containing a benzene ring, is introduced between a polyvinyl main chain and a cinnamate group, and also wherein the cinnamate group can be substituted with a cyanide group, an alkyl group, a halogen atom or a fluorocarbonyl group. The cinnamate-containing photopolymers have improved stability and photoelectric properties, and improved pre-tilt angle. The photopolymers can be used to form an orientation film for an LCD in a non-rubbing process, and can be used alone or with a cross linking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.