Phase difference film and display device
US10620354B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2018 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Aug 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133565
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A phase difference film including: a phase difference thin film including at least two non-liquid crystal polymers, wherein the phase difference thin film satisfies refractive indexes of nx≥ny>nz and has a thickness direction phase difference per unit thickness of greater than or equal to about 80 nm/μm, wherein nx denotes a refractive index of the phase difference thin film at a slow axis thereof, ny denotes a refractive index of the phase difference thin film at a fast axis thereof, and nz denotes a refractive index of the phase difference thin film in a direction perpendicular to the slow axis and the fast axis thereof, and wherein an average light transmittance in a wavelength region of about 360 nm to about 740 nm is greater than or equal to about 88%, and a display device including the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.