Two-in-one translucent and colored film
US9632218B2 · kind B2 · utility
7Cited by
32References
75Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2015 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Jul 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/222
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A two-in-one colored and translucent film structure suitable for use in backlit displays having a multi-point illumination source. The film structure utilizes a colored layer and a light-diffusing layer that reduces variations in the amount of light transmitted through different areas of a backlit sign. The light-diffusing layer includes light-diffusing particles dispersed in a transparent matrix material, and scatters light transmitted therethrough. The light-diffusing particles have an index of refraction that is different than an index of refraction of the matrix material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.