Optical film comprising a first sheet having a pyramid pattern layer and backlight unit having the same
US12222595B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | May 10, 2024 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | May 10, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133615
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to various embodiments of the present disclosure, an optical film comprises a first sheet including a pyramid pattern layer including a plurality of pyramid patterns and a first prism pattern layer including a plurality of first prisms patterns; a second sheet including a second prism pattern layer including a plurality of second prism patterns and a first diffusion layer; and a third sheet including a third prism pattern layer including a plurality of third prism patterns and a second diffusion layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.