Light diffusion film and light diffusion film manufacturing method
US9945990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2014 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Feb 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133553
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A light diffusion film in which the angle of aperture of diffused light has been expanded effectively by forming, within the film, a predetermined columnar structure composed of pillar-shaped objects having a bent part and a region having a relatively low refractive index, and a method for manufacturing the light diffusion film are provided. Disclosed is a light diffusion film having a columnar structure in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in the film thickness direction in a region having a relatively low refractive index, and the plural pillar-shaped objects having a relatively high refractive index have a bent part in the middle of the pillar-shaped objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.