Optical film and light emitting device
US9166198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2012 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Mar 9, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24421
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An optical film and a light emitting device are provided. The optical film includes a substrate, a resin layer, and a plurality of porous particles. The resin layer is located on the substrate. The porous particles are distributed in the resin layer, and each of the porous particles includes a particle body and a plurality of holes. A refractive index of the particle body is different from a refractive index of the resin layer, and the refractive index of the particle body is different from a refractive index of air in the holes. The light emitting device includes a light emitting element and an optical film. The light emitting element has a light emitting surface, and the optical film is located on the light emitting surface of the light emitting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.