Optical film and display device including same
US9212241B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 27, 2012 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Jul 25, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An optical film including a polymer including a repeating unit A including a repeating unit represented by the following Chemical Formulas 1 to 3, or a combination thereof; and a repeating unit B derived from a monomer having an unsaturated bond copolymerizable with the repeating unit A, wherein the optical film has a short wavelength dispersion of an in-plane phase-difference value (Re) (450 nm/550 nm) ranging from about 0.81 to about 1.20, and a long wavelength dispersion of an in-plane phase-difference value (Re) (650 nm/550 nm) ranging from about 0.90 to about 1.18:wherein, in Chemical Formulas 1 to 3, the variables R1 to R21 are defined herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.