Light diffusion film
US10094958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2013 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Jan 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133504
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to the present invention, there is provided a light diffusion film for diffusing incident light into an elliptical shape, which contains, inside the film, a structure composed of a plurality of flaky-shaped objects with comparatively high refractive index arranged in multiple rows in a region with comparatively low refractive index along any one arbitrary direction along the film plane. If T50 (μm) is the width of the flaky-shaped objects at a position of 50 μm below the upper end of the flaky-shaped objects in the direction of the thickness of the light diffusion film, and if L50 (μm) is the length of the flaky-shaped objects in the above-mentioned arbitrary one direction, the following relation (1) is satisfied: 0.05≤T50/L50<0.9 (1)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.