Negative C-plate type optical anisotropic film comprising poly cycloolefin and method for preparing the same
US7524542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2003 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Mar 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a negative C-plate type optical anisotropic film having negative birefringence along the thickness direction. In particular, the present invention provides a film comprising cycloolefin addition polymer, which is prepared by addition polymerizing norbornene-based monomers, a method for preparing the same, and a liquid crystal display comprising the same. The film of the present invention can be used for optical compensation films of a variety of LCD (liquid crystal display) modes because the refractive index alone the thickness direction can be controlled by the kind and amount of functional groups introduced to the cycloolefin addition polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.