Optical film
US12117640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2021 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Nov 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0294
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film according to various embodiments of the disclosure may include: a prism pattern layer having one surface on which a plurality of prisms having pattern directions parallel to each other in a first direction are provided; a first diffusion layer provided on the other surface of the prism pattern layer; a base film that is in contact with the first diffusion layer on one surface and has an optical axis direction in a second direction different from the first direction; and a second diffusion layer that is in contact with the other surface of the base film. In addition, an optical film and a backlight unit including the optical film according to various embodiments may be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.