Optical compensation films based on fluoropolymers
US8802238B2 · kind B2 · utility
6Cited by
25References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2010 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Sep 5, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31544
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An optical compensation film composition is disclosed herein having a polymer film and a substrate, wherein the polymer film has a positive birefringence greater than 0.005 throughout the wavelength range of 400 nm<λ<800 nm, the film having been cast from a polymer solution comprising a solvent and a polymer having a moiety ofwherein R1, R2, and R3 are each independently hydrogen atoms, alkyl groups, substituted alkyl groups, or halogens, wherein at least one of R1, R2, and R3 is a fluorine atom, and wherein R is hydrogen or a substituent on the styrenic ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.