Light diffraction film and wearable display device
US11194169B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Nov 4, 2019 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Apr 15, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light diffraction film includes a transparent substrate; and a light diffraction layer containing a binder resin and particles, in which an average primary particle diameter of the particles is 1 μm to 10 μm, and a coverage of a surface of the transparent substrate covered with the particles is 70% to 90%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.