Viewing angle widening film, manufacturing method thereof, and display device
US12092912B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Nov 18, 2022 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Nov 18, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A viewing angle widening film, a manufacturing method thereof, and a display device are provided. A first film layer of the viewing angle widening film includes protrusions spaced apart from each other and extended along a first direction. The protrusions include a first protrusion and a second protrusion arranged on a side of the first protrusion away from a flat layer, a surface of the second protrusion on a side away from the flat layer is an arc surface, and a diffusion effect of the second protrusion is weaker than that of the first protrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.