Viewing angle adjusting film and display device including the same
US11487054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2020 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | May 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133502
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A viewing angle adjusting film includes a polarizing film having a transmission axis in a first direction and an optical film disposed on the polarizing film and including first areas having isotropy or anisotropy and second areas having anisotropy, the first areas and the second areas being alternately disposed. A refractive index of the second areas in the first direction is higher than a refractive index of the first areas in the first direction. Therefore, the optical film including first areas and second areas having different refractive indices is disposed on a polarizing film to thereby form a viewing angle adjusting film, so that diffusion and collection of light can be easily achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.