Optical film and display device including the same
US11231622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2020 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Aug 27, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133632
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film includes a first pattern layer including a base part and a plurality of protruding parts disposed on the base part, and having a first refractive index, and a second pattern layer disposed on the first pattern layer and having a second refractive index greater than the first refractive index. Each of the protruding parts includes a bottom surface adjacent to the base part, an upper surface opposite to the bottom surface and parallel to the bottom surface, and a side surface disposed between the bottom surface and the upper surface. The side surface includes three or more sub-inclined surfaces, inclination angles of which are different from each other, or includes a curved surface which is convex in a direction of the second pattern layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.